Kimsuky Uses the AI Agent 'opencode' to Create Decoys as Its GitHub PAT-Based LNK Attacks Evolve

2026-09-06 Genians

https://www.genians.co.kr/en/blog/threat_intelligence/ai-agent-opencode

Thumbnail for Kimsuky Uses the AI Agent 'opencode' to Create Decoys as Its GitHub PAT-Based LNK Attacks Evolve

Genians attributes 13 malicious LNK variants collected in August 2026 to Kimsuky’s Operation GitPower, citing matching LNK fingerprints, a shared custom decoder, GitHub PAT-authenticated delivery, and disguised scheduled tasks. The variants execute obfuscated PowerShell, use GitHub Raw Content and Pastebin for payload delivery, and add checks for virtualization and analysis tools. Metadata identifying the opencode AI coding agent, unreviewed placeholders, identical timestamps, and templated HeadlessChrome documents indicate that AI-assisted automation was used to produce lures at scale. The campaign expands its decoys into financial and corporate workflows while retaining the group’s established Git-based C2 architecture.

Indicators of Compromise

Type Value First Seen Last Seen
EMAIL [email protected] 2026-09-06 2026-09-06
EMAIL [email protected] 2026-09-06 2026-09-06
EMAIL [email protected] 2026-09-06 2026-09-06
EMAIL [email protected] 2026-09-06 2026-09-06
EMAIL [email protected] 2026-09-06 2026-09-06
EMAIL [email protected] 2026-09-06 2026-09-06
EMAIL [email protected] 2026-09-06 2026-09-06
EMAIL [email protected] 2026-09-06 2026-09-06
EMAIL [email protected] 2026-09-06 2026-09-06
EMAIL [email protected] 2026-09-06 2026-09-06
URL https://pastebin.com/raw/gybpx3… 2026-09-06 2026-09-06
URL https://raw.githubusercontent.c… 2026-09-06 2026-09-06
URL https://github.com/jeni534 2026-09-06 2026-09-06
URL https://github.com/choemiyang 2026-09-06 2026-09-06
URL https://github.com/baras6600P 2026-09-06 2026-09-06
URL https://github.com/jamestony88 2026-09-06 2026-09-06
URL https://github.com/urusa4400 2026-09-06 2026-09-06
URL https://github.com/jamjack2026 2026-09-06 2026-09-06
URL https://github.com/montry111 2026-09-06 2026-09-06
URL https://github.com/sven5500 2026-09-06 2026-09-06
HASH f648bdd3c2cd902e239149de86d43e8f 2026-09-06 2026-09-06
HASH e50f2ae7fb03675a1ef58b1cf9cda6d1 2026-09-06 2026-09-06
HASH d0894d4626aae0f96d6b84ca3bb71a36 2026-09-06 2026-09-06
HASH ce5932b88f879f26006df81f2fa7667e 2026-09-06 2026-09-06
HASH bb88940e915b11f6330b7446f6037f5b 2026-09-06 2026-09-06
HASH a2015665a3e18bf0ef86e3931245c7e6 2026-09-06 2026-09-06
HASH 900e832c10d851bbdef3fb191a15db0e 2026-09-06 2026-09-06
HASH 8db2f20b719dcb7029d6296505622093 2026-09-06 2026-09-06
HASH 7a53089053b1381742856a5cf2b95f8b 2026-09-06 2026-09-06
HASH 685bfc6b2c29fbc16cfad908894add55 2026-09-06 2026-09-06
HASH 500e0bc0d7579fb338912770964076fe 2026-09-06 2026-09-06
HASH 1523a2fcc901965ab4568d9fe829e4af 2026-09-06 2026-09-06
HASH 10780939962b54addc9d31f57d80edfc 2026-09-06 2026-09-06

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