Clambling

MITRE ATT&CK: S0660 View on attack.mitre.org

Aliases: Clambling

First seen
2017-01-01 00:00:00
Malware type
backdoor
Family
Malware family
Operating systems
windows
Profile updated
2026-07-07 13:18:07

Targeted industries: government-and-public-sector technology-and-telecommunications defense-and-aerospace

Targeted regions: country_code:cn country_code:us country_code:hk

Context

Clambling is a modular backdoor written in C++ that has been used by Threat Group-3390 since at least 2017.

Detection coverage

  • 1 YARA rules
  • 911 Sigma rules

Malware & tools used

  • Video Capture (attack-pattern)
  • Non-Application Layer Protocol (attack-pattern)
  • Hidden Files and Directories (attack-pattern)
  • Bidirectional Communication (attack-pattern)
  • Screen Capture (attack-pattern)
  • Time Based Checks (attack-pattern)
  • Query Registry (attack-pattern)
  • File and Directory Discovery (attack-pattern)
  • Registry Run Keys / Startup Folder (attack-pattern)
  • Malicious File (attack-pattern)
  • Exfiltration to Cloud Storage (attack-pattern)
  • Obfuscated Files or Information (attack-pattern)
  • Service Execution (attack-pattern)
  • Process Injection (attack-pattern)
  • Spearphishing Attachment (attack-pattern)
  • Clipboard Data (attack-pattern)
  • Windows Command Shell (attack-pattern)
  • System Information Discovery (attack-pattern)
  • Network Share Discovery (attack-pattern)
  • Application Layer Protocol (attack-pattern)
  • Keylogging (attack-pattern)
  • Process Hollowing (attack-pattern)
  • Deobfuscate/Decode Files or Information (attack-pattern)
  • Process Discovery (attack-pattern)
  • System Time Discovery (attack-pattern)

Used by threat actors

Detection rules

  • MALPEDIA_Win_Clambling_Auto (yara-rule)

Reports & references

  • Trend Micro — Wp Uncovering Drbcontrol (report)
  • malpedia.caad.fkie.fraunhofer.de — Win.Clambling (report)
  • bleepingcomputer.com — Chinas Apt Hackers Move To Ransomware Attacks (report)
  • shared-public-reports.s3-eu-west-1.amazonaws.com — Apt27+Turns+To+Ransomware (report)
  • MITRE ATT&CK — S0660 (report)

External references