Sigma rule: TeamPCP LiteLLM Supply Chain Attack Persistence Indicators

Rule

Title

TeamPCP LiteLLM Supply Chain Attack Persistence Indicators

Status

experimental

Level

high

Author

Swachchhanda Shrawan Poudel (Nextron Systems)

Date

2026-03-30

File

rules-emerging-threats/2026/TA/TeamPCP/file_event_lnx_teampcp_litellm_supply_chain_attack_indicators.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the creation of specific persistence files as observed in the LiteLLM PyPI supply chain attack.
In March 2026, a supply chain attack was discovered involving the popular open-source LLM framework LiteLLM by Threat Actor TeamPCP.
The malicious package harvests every credential on the system, encrypts and exfiltrates them, and installs a persistent C2 backdoor.

Log source

product

linux

category

file_event

Detection

selection:
    Image|contains: '/python3'
    TargetFilename|endswith:
        - '/.config/sysmon/sysmon.py'
        - '/.config/systemd/user/sysmon.service'
condition: selection

False positives (as the rule lists them)

• Unknown

Tags

• attack.persistence
• attack.privilege-escalation
• attack.t1543.002
• attack.initial-access
• attack.t1195.002
• detection.emerging-threats

MITRE ATT&CK ids this rule names

• T1195.002
• T1543.002

References

• https://novasky.io/hunts/hunting-litellm-supply-chain
• https://www.virustotal.com/gui/file/71e35aef03099cd1f2d6446734273025a163597de93912df321ef118bf135238/
• https://huskyhacks.io/posts/litellm-cred-stealer/
• https://www.wiz.io/blog/threes-a-crowd-teampcp-trojanizes-litellm-in-continuation-of-campaign

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2026/TA/TeamPCP/file_event_lnx_teampcp_litellm_supply_chain_attack_indicators.yml