Rewterz Threat Alert – AveMaria RAT – Active IOCs
April 29, 2022Rewterz Threat Alert – Calypso APT Group’s Attack On A Telecommunications Company In Kazakhstan – Active IOCs
May 4, 2022Severity
High
Analysis Summary
Stonefly – aka DarkSeoul, BlackMine, Operation Troy, and Silent Chollima, is a cyberespionage group that originally made headlines in July 2009, when it launched DDoS attacks on a variety of South Korean, government, and financial websites. However, in recent years, they have reduced their attention to exclusively espionage operations against high-value targets.
Stonefly’s operations appear to be part of a larger North Korean-sponsored campaign to obtain information and intellectual property, with another North Korean group, Pompilus, conducting a bigger trawl across numerous sectors. A most recent attack discovered by security researchers was against an engineering firm that works in the energy and military sectors. The attackers breached the organization most likely by exploiting the Log4j vulnerability (CVE-2021-44228) on a public-facing server. The attackers then compromised 18 other computers.
Stonefly’s tools and techniques are still evolving and due to its capabilities and emphasis on gathering sensitive data, the group is one of the most potent North Korean cyber threat actors active today.
Impact
- Information theft and espionage
- Exposure of sensitive data
Indicators of Compromise
Domain Name
- tecnojournals[.]com
- semiconductboard[.]com
- cyancow[.]com
- bluedragon[.]com
MD5
- 9dcc3e4dafc47d6f505880d7eb43fa93
- a4cddfaa5a1fc2abf8a920bee84ce8e3
- c99dde8c7d68c1776aaf52275a6d9cd2
- 8df48fa69cb7b4c99939702caa70d1a9
- 47e001253af2003985f15282cdc90a1c
SHA-256
- 9ca9f414b689fc903afb314016155814885966b0e30b21b642819d53ba94533c
- 28d0e945f0648bed7b7b2a2139f2b9bf1901feec39ff4f6c0315fa58e054f44e
- b4a85ef01b5d8058cf94f3e96c48d86ce89b20295e8d1125dc3fc1c799a75789
- de00c0111a561e88d62fd84f425a6febc72e01e2e927fb76d01603319a34b4b3
- 14f0c4ce32821a7d25ea5e016ea26067d6615e3336c3baa854ea37a290a462a8
SHA-1
- b9fe3c1d3d5dbf330efc81c4dd5ec4ef405bc412
- 0365fe05e2de0f327dfaa8cd0d988dbb7b379612
- 817c2f378bacdae18b3d71b3b76a02109975e2e5
- 78c9fe7590df8252e01ccfc4dccc79c30d580994
- 6ee6664df9bfb47d97090492b6cde68bf056a42a
URL
- https[:]//tecnojournals[.]com/review
- https[:]//tecnojournals[.]com/general
- https[:]//semiconductboard[.]com/xcror
- http[:]//cyancow[.]com/find
- https[:]//bluedragon[.]com/login
Remediation
- Exercise caution when receiving messages from unknown senders.
- Block all threat indicators at your respective controls.
- Keep your software updated to the latest patches.
- Search for IOCs in your environment.