T1041: Exfiltration Over C2 Channel
| View on MITRE ATT&CK | T1041 |
|---|---|
| Tactic(s) | Exfiltration |
Data from MITRE ATT&CK®:
Adversaries may steal data by exfiltrating it over an existing command and control channel. Stolen data is encoded into the normal communications channel using the same protocol as command and control communications.
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Cyber Threat Graph Context
Explore how this ATT&CK Technique relates to the wider threat graph
Reporting on this Technique
RedHotel: A Prolific, Chinese State-Sponsored Group Operating at a Global Scale
This report from Recorded Future's Insikt Group outlines activity by the Red Hotel intrusion set. RedHotel is identified as a prominent Chinese ...
APT40 Advisory - PRC MSS tradecraft in action
This advisory, authored by the Australian Cyber Security Centre and multiple other international cybersecurity agencies, outlines the threat posed ...
Threat Group FIN7 Targets the U.S. Automotive Industry
In late 2023, BlackBerry analysts discovered a targeted attack by FIN7 on a U.S. automotive manufacturer, exploiting IT employees with higher ...
ArcaneDoor - New espionage-focused campaign found targeting perimeter network devices
This blog post from Cisco Talos discusses ArcaneDoor, an espionage-focused campaign targeting perimeter network devices, which are crucial for ...
KAPEKA A novel backdoor spotted in Eastern Europe
This report from researchers at WithSecure unveils a novel backdoor: 'Kapeka'. Kapeka has been used against victims in Eastern Europe ...
Cyberespionage Group Earth Hundun's Continuous Refinement of Waterbear and Deuterbear
This blog post from researchers at Trend Micro discusses the cyberespionage group Earth Hundun and its malware, Waterbear and Deuterbear, which ...
FamousSparrow: A suspicious hotel guest
This blog post by researchers from ESET describes the FamousSparrow APT group and associated custom backdoor 'SparrowDoor'. According to the post, ...
The Updated APT Playbook: Tales from the Kimsuky threat actor group
This article by researchers at Rapid7 discusses recent activity by North Korean intrusion set 'Kimsuky'. Kimsuky is primarily focused on ...
Russian Foreign Intelligence Service (SVR) Exploiting JetBrains TeamCity CVE Globally
This Cybersecurity Advisory by CISA with US and international partners outlines activity which they link to APT29 (also known as The Dukes, Cozy ...
Detailed Analysis of DarkGate
This post on Medium by S2W presents a technical analysis of DarkGate malware and the operator behind it. According to the report, DarkGate is a ...
Ransomware Spotlight: Black Basta
This report from Trend Micro outlines tactics, techniques and procedures used by the Black Basta Ransomware group. According to the report, Black ...
Threat Actor Groups, Including Black Basta, are Exploiting Recent ScreenConnect Vulnerabilities
This blog post gives a detailed analysis of two critical vulnerabilities (CVE-2024-1708 and CVE-2024-1709) affecting ConnectWise ScreenConnect ...
Earth Lusca Uses Geopolitical Lure to Target Taiwan Before Elections
Blog post from researchers at Trend Micro discussing Earth Lusca and potential links to Chinese contractor I-Soon. Earth Lusca is a China-linked ...
Mitigations for this technique
MITRE ATT&CK Mitigations
Network Intrusion Prevention
Use intrusion detection signatures to block traffic at network boundaries.Data Loss Prevention
Use a data loss prevention (DLP) strategy to categorize sensitive data, identify data formats indicative of personal identifiable information (PII), and restrict exfiltration of sensitive data.(Citation: PurpleSec Data Loss Prevention)How to detect this technique
MITRE ATT&CK Data Components
File Access (File)
Opening a file, which makes the file contents available to the requestor (ex: Windows EID 4663)Network Connection Creation (Network Traffic)
Initial construction of a network connection, such as capturing socket information with a source/destination IP and port(s) (ex: Windows EID 5156, Sysmon EID 3, or Zeek conn.log)Network Traffic Flow (Network Traffic)
Summarized network packet data, with metrics, such as protocol headers and volume (ex: Netflow or Zeek http.log)Command Execution (Command)
The execution of a line of text, potentially with arguments, created from program code (e.g. a cmdlet executed via powershell.exe, interactive commands like >dir, shell executions, etc. )Network Traffic Content (Network Traffic)
Logged network traffic data showing both protocol header and body values (ex: PCAP)Control Validation Tests for this Technique
Use Atomic Red Team tests to test your defenses against this technique.
Sigma Detections for this Technique
SP800-53 Controls
See which controls can help protect against this MITRE ATT&CK technique. This is based on mappings to associated SP800-53 controls produced by the MITRE Engenuity Center for Threat-Informed Defense.