Mapping To Silence

Silence is a financially motivated threat actor targeting financial institutions in different countries. The group was first seen in June 2016. Their main targets reside in Russia, Ukraine, Belarus, Azerbaijan, Poland and Kazakhstan. They compromised various banking systems, including the Russian Central Bank's Automated Workstation Client, ATMs, and card processing.


Disclaimer: We present this mapping to stimulate thinking about active defense options to combat this adversary, not to present all possibilities. We invite you to use this as a guide and add your own use cases for applying Shield techniques to counter each adversary action.

Note: All ATT&CK Group sub-technique mappings have been remapped to their parent technique and were derived from Group Technique mappings in ATT&CK v8.

Details
ATT&CK ID: G0091
Associated Groups:  Silence
Note:  This page uses Adversary Group data from MITRE ATT&CK.
ATT&CK Technique Opportunity Space AD Technique Use Case
T1003 - OS Credential Dumping There is an opportunity to deploy a tripwire that triggers an alert when an adversary touches a network resource or uses a specific technique. DTE0012 - Decoy Credentials A defender can seed systems with decoy credentials in a variety of locations and establish alerting that will trigger if an adversary harvests the credentials and attempts to use them.
T1018 - Remote System Discovery There is an opportunity for the defender to observe the adversary and control what they can see, what effects they can have, and/or what data they can access. DTE0036 - Software Manipulation A defender can change the output of a recon commands to hide simulation elements you don’t want attacked and present simulation elements you want the adversary to engage with.
T1018 - Remote System Discovery In an adversary engagement situation, there is an opportunity to add legitimacy by ensuring decoy systems are fully populated with information an adversary would expect to see during this recon process. DTE0011 - Decoy Content A defender can create entries in a decoy system's ARP cache, hosts file, etc. to add to the legitimacy of the device.
T1021 - Remote Services There is an opportunity to monitor network traffic for different protocols, anomalous traffic patterns, transfer of data, etc. to determine the presence of an adversary. DTE0027 - Network Monitoring The defender can implement network monitoring for and alert on anomalous traffic patterns, large or unexpected data transfers, and other activity that may reveal the presence of an adversary.
T1021 - Remote Services In an adversary engagement scenario, there is an opportunity to introduce decoy systems that can influence an adversary's behavior or allow you to observe how they perform a specific task. DTE0017 - Decoy System A defender could implement a decoy system running a remote service (such as telnet, SSH, and VNC) and see if the adversary attempts to login to the service.
T1027 - Obfuscated Files or Information In an adversary engagement scenario, there is an opportunity to introduce decoy systems that can influence an adversary's behavior or allow you to observe how they perform a specific task. DTE0017 - Decoy System A defender could implement a decoy system to study how and when an adversary obfuscate files and hides information.
T1036 - Masquerading There is an opportunity to detect the presence of an adversary by identifying and alerting on anomalous behaviors. DTE0007 - Behavioral Analytics A defender can look for known files in non-standard locations or files that are creating anomalous processes or connections.
T1053 - Scheduled Task/Job There is an opportunity to study the adversary and collect first-hand observations about them and their tools. DTE0001 - Admin Access A defender can enable Admin Access on a system to see if the adversary utilizes that access to create scheduled tasks to launch their malware or tools.
T1053 - Scheduled Task/Job There is an opportunity to study the adversary and collect first-hand observations about them and their tools. DTE0017 - Decoy System A defender can configure a decoy system with limited restrictions to see if the adversary creates or alters scheduled tasks to launch their malware.
T1053 - Scheduled Task/Job There is an opportunity to create a detection with a moderately high probability of success. DTE0034 - System Activity Monitoring A defender can capture system activity logs and generate alerts if the adversary creates new scheduled tasks or alters existing tasks.
T1055 - Process Injection In an adversary engagement scenario, there is an opportunity to implement security controls to support your defensive objectives over a prolonged engagement. DTE0032 - Security Controls A defender could implement security controls to have an effect on process injection techniques such as AppLocker or an Antivirus/EDR tool designed to watch for CreateRemoteThread events.
T1059 - Command and Scripting Interpreter There is an opportunity for the defender to observe the adversary and control what they can see, what effects they can have, and/or what data they can access. DTE0036 - Software Manipulation A defender can manipulate the output of system commands issued to alter information the adversary might use during their activity.
T1059 - Command and Scripting Interpreter There is an opportunity for the defender to observe the adversary and control what they can see, what effects they can have, and/or what data they can access. DTE0036 - Software Manipulation A defender can modify the functionality of commands used to delete files so that the files are copied to a safe location before they are deleted.
T1059 - Command and Scripting Interpreter There is an opportunity for the defender to observe the adversary and control what they can see, what effects they can have, and/or what data they can access. DTE0034 - System Activity Monitoring A defender can detect the presence of an adversary by monitoring for processes that are created by commands and/or scripts they execute on a system.
T1070 - Indicator Removal on Host In an adversary engagement scenario, there is an opportunity to allow or restrict admin access to support your defensive objectives. DTE0001 - Admin Access A defender can restrict admin access to force an adversary to escalate privileges in order to delete logs and captured artifacts from a system.
T1070 - Indicator Removal on Host There is an opportunity to detect the presence of an adversary by identifying and alerting on anomalous behaviors. DTE0007 - Behavioral Analytics A defender can look for anomalies in how commands are being executed on a system. This can expose potentially malicious activity.
T1072 - Software Deployment Tools There is an opportunity to study the adversary and collect first-hand observations about them and their tools. DTE0017 - Decoy System A defender can deploy a decoy software deployment tool within an adversary engagement environment to see how the adversary attempts to use the device during their activity.
T1078 - Valid Accounts There is an opportunity to introduce user accounts that are used to make a system look more realistic. DTE0010 - Decoy Account A defender can create decoy user accounts which are used to make a decoy system or network look more realistic.
T1078 - Valid Accounts There is an opportunity to deploy a tripwire that triggers an alert when an adversary touches a network resource or uses a specific technique. DTE0012 - Decoy Credentials A defender can seed systems with decoy credentials in a variety of locations and establish alerting that will trigger if an adversary harvests the credentials and attempts to use them.
T1078 - Valid Accounts There is an opportunity to prepare user accounts so they look used and authentic. DTE0008 - Burn-In A defender can prepare a Decoy System by logging in to the Decoy Account and using it in ways consistent with the deception story, creating artifacts in the system that make it look legitimate.
T1090 - Proxy There is an opportunity to block an adversary that is seeking to use a proxied connection. DTE0026 - Network Manipulation A defender could block traffic to known anonymity networks and C2 infrastructure through the use of network allow and block lists.
T1105 - Ingress Tool Transfer There is an opportunity to collect network data and analyze the adversary activity it contains. DTE0028 - PCAP Collection Collecting full packet capture of all network traffic allows you to review what happened over the connection and identify command and control traffic and/or exfiltration activity.
T1106 - Native API There is an opportunity for the defender to observe the adversary and control what they can see, what effects they can have, and/or what data they can access. DTE0036 - Software Manipulation A defender can modify system calls to break communications, route things to decoy systems, prevent full execution, etc.
T1106 - Native API There is an opportunity for the defender to observe the adversary and control what they can see, what effects they can have, and/or what data they can access. DTE0003 - API Monitoring A defender can monitor operating system functions calls to look for adversary use and/or abuse.
T1112 - Modify Registry There is an opportunity to utilize known good copies of registry information and restore it if an adversary makes any changes. DTE0006 - Baseline A defender can enable Registry Auditing on specific keys to produce an alerts whenever a value is changed and revert those keys to baseline.
T1112 - Modify Registry There is an opportunity to study the adversary and collect first-hand observations about them and their tools. DTE0034 - System Activity Monitoring A defender can monitor processes and command-line arguments which could be used by an adversary to change or delete information in the Windows registry.
T1113 - Screen Capture There is an opportunity to feed content to an adversary to influence their behaviors, test their interest in specific topics, or add legitimacy to a system or environment. DTE0011 - Decoy Content A defender can display decoy content on the screen which may be of interest to an adversary in an attempt to elicit further engagement.
T1125 - Video Capture There is an opportunity to feed content to an adversary to influence their behaviors, test their interest in specific topics, or add legitimacy to a system or environment. DTE0011 - Decoy Content A defender can introduce video content designed to make the adversary believe that their capture efforts are working.
T1125 - Video Capture There is an opportunity to alter the system to prevent an adversary from capturing video content. DTE0020 - Hardware Manipulation A defender can physically remove or disable a system's web camera and remove any video capture applications so that video capture is not possible.
T1204 - User Execution There is an opportunity to study the adversary and collect first-hand observations about them and their tools. DTE0018 - Detonate Malware A defender can execute adversary malware on a decoy system and examine its behaviors or potentially engage with the adversary to obtain further intelligence.
T1218 - Signed Binary Proxy Execution There is an opportunity to block an adversary's intended action and force them to reveal additional TTPs. DTE0036 - Software Manipulation A defender can monitor operating system functions calls to look for adversary use and/or abuse.
T1218 - Signed Binary Proxy Execution There is an opportunity to study the adversary and collect first-hand observations about them and their tools. DTE0018 - Detonate Malware A defender can detonate malicious code leveraging a signed binary on a decoy system or within a decoy network to see how it behaves or for adversary engagement purposes.
T1218 - Signed Binary Proxy Execution There is an opportunity to create a detection with a moderately high probability of success. DTE0003 - API Monitoring A defender can monitor and analyze operating system functions calls for detection and alerting.
T1547 - Boot or Logon Autostart Execution There is an opportunity to use tools and controls to stop an adversary's activity. DTE0006 - Baseline A defender can store good copies of registry startup keys and restore them on a frequent basis. This can prevent an adversary from using them to launch malware on system startup.
T1553 - Subvert Trust Controls There is an opportunity to determine adversary capabilities or preferences by controlling aspects of the engagement environment. DTE0032 - Security Controls In an adversary engagement scenario, a defender can implement weak security controls that an adversary could subvert in order to further their attack.
T1553 - Subvert Trust Controls There is an opportunity for the defender to observe the adversary and control what they can see, what effects they can have, and/or what data they can access. DTE0003 - API Monitoring A defender can monitor and analyze operating system functions calls for detection and alerting.
T1566 - Phishing A phishing email can be detected and blocked from arriving at the intended recipient. DTE0019 - Email Manipulation A defender can intercept emails that are detected as suspicious or malicious by email detection tools and prevent deliver to the intended target.
T1566 - Phishing A phishing email can be detected and moved from the intended recipient to a decoy account for reading and execution. DTE0023 - Migrate Attack Vector A defender can move suspicious emails to a decoy system prior to opening and examining the email.
T1566 - Phishing Users trained and encouraged to report phishing can detect attacks that other defenses do not. DTE0035 - User Training A program to train and exercise the anti-phishing skills of users can create "Human Sensors" that help detect phishing attacks.
T1566 - Phishing There is an opportunity to discover who or what is being targeting by an adversary. DTE0015 - Decoy Persona A defender can seed information about the decoy persona's personal accounts on systems to see if the adversary collects and uses that information in future activity.
T1569 - System Services There is an opportunity for the defender to observe the adversary and control what they can see, what effects they can have, and/or what data they can access. DTE0003 - API Monitoring A defender can monitor and analyze operating system functions calls for detection and alerting.
T1569 - System Services There is an opportunity to create a detection with a moderately high probability of success. DTE0033 - Standard Operating Procedure A defender can define operating procedures for adding services and alert when they are not followed.
T1571 - Non-Standard Port There is an opportunity to monitor network traffic for different protocols, anomalous traffic patterns, transfer of data, etc. to determine the presence of an adversary. DTE0027 - Network Monitoring The defender can implement network monitoring for and alert on anomalous traffic patterns, large or unexpected data transfers, and other activity that may reveal the presence of an adversary.