More Kimsuky “AutoUpdate” Malware
2020-06-25 • Threatconnect •
ThreatConnect identified an additional malware sample likely associated with Kimsuky, a DPRK-based group, because its behavior matched earlier AutoUpdate-linked activity. The sample shared a string deobfuscation routine and specific URL-parameter behavior with a previously reported downloader. It was uploaded to VirusTotal as bmail-security-check.scr, and its embedded command-and-control server was security-confirm.bmail-org[.]com, which ThreatConnect observed as live on June 18, 2020. The finding helps defenders connect related Kimsuky malware variants and prioritize detections around downloader behavior, obfuscated C2 configuration, and suspicious security-themed lure filenames.
Indicators of Compromise
| Type | Value | First Seen | Last Seen |
|---|---|---|---|
| HASH | 1e14ded758c5dd7b41fe20297935eeef | 2020-06-25 | 2020-06-25 |
| [email protected] | 2020-06-25 | 2020-06-25 | |
| URL | http://www.fireeye.fr/blog/thre… | 2020-06-25 | 2020-06-25 |
| URL | https://paste.cryptolaemus.com/… | 2020-06-25 | 2020-06-25 |
| DOMAIN | security-confirm.bmail-org.com | 2020-06-25 | 2020-06-25 |
| HASH | c315de8ac15b51163a3bc075063a58aa | 2020-01-23 | 2020-06-25 |