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SLOTHFULMEDIA is a remote access Trojan written in C++ that has been used by an unidentified “sophisticated cyber actor” since at least January 2017.12 It has been used to target government organizations, defense contractors, universities, and energy companies in Russia, India, Kazakhstan, Kyrgyzstan, Malaysia, Ukraine, and Eastern Europe.34

In October 2020, Kaspersky Labs assessed SLOTHFULMEDIA is part of an activity cluster it refers to as “IAmTheKing”.4 ESET also noted code similarity between SLOTHFULMEDIA and droppers used by a group it refers to as “PowerPool”.5

Item Value
ID S0533
Associated Names JackOfHearts, QueenOfClubs
Version 1.0
Created 16 November 2020
Last Modified 13 April 2021
Navigation Layer View In ATT&CK® Navigator

Associated Software Descriptions

Name Description
JackOfHearts Kaspersky Labs refers to the “mediaplayer.exe” dropper within SLOTHFULMEDIA as the JackOfHearts.4
QueenOfClubs Kaspersky Labs assesses SLOTHFULMEDIA is an older variant of a malware family it refers to as the QueenOfClubs.4

Techniques Used

Domain ID Name Use
enterprise T1071 Application Layer Protocol -
enterprise T1071.001 Web Protocols SLOTHFULMEDIA has used HTTP and HTTPS for C2 communications.1
enterprise T1059 Command and Scripting Interpreter -
enterprise T1059.003 Windows Command Shell SLOTHFULMEDIA can open a command line to execute commands.1
enterprise T1543 Create or Modify System Process -
enterprise T1543.003 Windows Service SLOTHFULMEDIA has created a service on victim machines named “TaskFrame” to establish persistence.1
enterprise T1005 Data from Local System SLOTHFULMEDIA has uploaded files and information from victim machines.1
enterprise T1001 Data Obfuscation SLOTHFULMEDIA has hashed a string containing system information prior to exfiltration via POST requests.1
enterprise T1041 Exfiltration Over C2 Channel SLOTHFULMEDIA has sent system information to a C2 server via HTTP and HTTPS POST requests.1
enterprise T1083 File and Directory Discovery SLOTHFULMEDIA can enumerate files and directories.1
enterprise T1564 Hide Artifacts -
enterprise T1564.001 Hidden Files and Directories SLOTHFULMEDIA has been created with a hidden attribute to insure it’s not visible to the victim.1
enterprise T1070 Indicator Removal -
enterprise T1070.004 File Deletion SLOTHFULMEDIA has deleted itself and the ‘index.dat’ file on a compromised machine to remove recent Internet history from the system.1
enterprise T1105 Ingress Tool Transfer SLOTHFULMEDIA has downloaded files onto a victim machine.1
enterprise T1056 Input Capture -
enterprise T1056.001 Keylogging SLOTHFULMEDIA has a keylogging capability.1
enterprise T1036 Masquerading -
enterprise T1036.004 Masquerade Task or Service SLOTHFULMEDIA has named a service it establishes on victim machines as “TaskFrame” to hide its malicious purpose.1
enterprise T1036.005 Match Legitimate Name or Location SLOTHFULMEDIA has mimicked the names of known executables, such as mediaplayer.exe.1
enterprise T1112 Modify Registry SLOTHFULMEDIA can add, modify, and/or delete registry keys. It has changed the proxy configuration of a victim system by modifying the HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap registry.1
enterprise T1057 Process Discovery SLOTHFULMEDIA has enumerated processes by ID, name, or privileges.1
enterprise T1055 Process Injection SLOTHFULMEDIA can inject into running processes on a compromised host.1
enterprise T1113 Screen Capture SLOTHFULMEDIA has taken a screenshot of a victim’s desktop, named it “Filter3.jpg”, and stored it in the local directory.1
enterprise T1489 Service Stop SLOTHFULMEDIA has the capability to stop processes and services.1
enterprise T1082 System Information Discovery SLOTHFULMEDIA has collected system name, OS version, adapter information, memory usage, and disk information from a victim machine.1
enterprise T1049 System Network Connections Discovery SLOTHFULMEDIA can enumerate open ports on a victim machine.1
enterprise T1033 System Owner/User Discovery SLOTHFULMEDIA has collected the username from a victim machine.1
enterprise T1007 System Service Discovery SLOTHFULMEDIA has the capability to enumerate services.1
enterprise T1569 System Services -
enterprise T1569.002 Service Execution SLOTHFULMEDIA has the capability to start services.1