General

  • Target

    51e9baed09ebf7407f8a01d34dca55ee0c4ca4fa

  • Size

    444KB

  • Sample

    210726-tpgtcye8j6

  • MD5

    d62e7eaa8e9524f1094f2ee37b31c09f

  • SHA1

    51e9baed09ebf7407f8a01d34dca55ee0c4ca4fa

  • SHA256

    6f9991b2dbb68f2cb2f1846a641e54857cc5a1b3f683e7883ac85e3a040987d1

  • SHA512

    9ce436aab531a981392a3f00fc359a9fd6e36c10b4a24437c3ab60693ac4c6e3a0927ac0f174027bb5598b71ad0074aceaaaf4e3366cb13ec678636be1a56bc5

Malware Config

Extracted

Family

oski

C2

edkark.xyz

Targets

    • Target

      51e9baed09ebf7407f8a01d34dca55ee0c4ca4fa

    • Size

      444KB

    • MD5

      d62e7eaa8e9524f1094f2ee37b31c09f

    • SHA1

      51e9baed09ebf7407f8a01d34dca55ee0c4ca4fa

    • SHA256

      6f9991b2dbb68f2cb2f1846a641e54857cc5a1b3f683e7883ac85e3a040987d1

    • SHA512

      9ce436aab531a981392a3f00fc359a9fd6e36c10b4a24437c3ab60693ac4c6e3a0927ac0f174027bb5598b71ad0074aceaaaf4e3366cb13ec678636be1a56bc5

    • Oski

      Oski is an infostealer targeting browser data, crypto wallets.

    • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

    • Downloads MZ/PE file

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks