General

  • Target

    42fb245fa2c03b58b2318c764b75d575_JaffaCakes118

  • Size

    993KB

  • Sample

    240514-zf6ywafd2v

  • MD5

    42fb245fa2c03b58b2318c764b75d575

  • SHA1

    b0b6a38f2694e8f404602fa432971e3ac7e2f8ac

  • SHA256

    6b989e60d772742748f20448ceb18ada7d13d95ea6393948708d4f388769baa8

  • SHA512

    1b889f0cf09263e4f9293e49539cbbee41b22c5abb4b6b707debf60cbb5982b1e3e1033618eae74c039dc074473ef0da29b61de7fbd9eaec01e5b900e703fe71

  • SSDEEP

    24576:ZMMpXS0hN0V0HoSMMMpXS0hN0V0HoSTSGB2uJ2s4otqFCJrW9FqvSbqsHasgXhFC:Kwi0L0qlFwi0L0qlG9

Malware Config

Targets

    • Target

      42fb245fa2c03b58b2318c764b75d575_JaffaCakes118

    • Size

      993KB

    • MD5

      42fb245fa2c03b58b2318c764b75d575

    • SHA1

      b0b6a38f2694e8f404602fa432971e3ac7e2f8ac

    • SHA256

      6b989e60d772742748f20448ceb18ada7d13d95ea6393948708d4f388769baa8

    • SHA512

      1b889f0cf09263e4f9293e49539cbbee41b22c5abb4b6b707debf60cbb5982b1e3e1033618eae74c039dc074473ef0da29b61de7fbd9eaec01e5b900e703fe71

    • SSDEEP

      24576:ZMMpXS0hN0V0HoSMMMpXS0hN0V0HoSTSGB2uJ2s4otqFCJrW9FqvSbqsHasgXhFC:Kwi0L0qlFwi0L0qlG9

    • Modifies WinLogon for persistence

    • Renames multiple (91) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks