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General

  • Target

    2024-03-07_f295fc7dddcb42db43ec324a13c18e57_virlock

  • Size

    253KB

  • Sample

    240307-kdepaage4y

  • MD5

    f295fc7dddcb42db43ec324a13c18e57

  • SHA1

    ba80bde535e362cfac856e1f144b703a70cc6f4f

  • SHA256

    095db4de3eb016ca57e320213845b7381fc23d9d774812ffb98eef6dee734864

  • SHA512

    5af223aefa8f96f52dbf4cb24027d9393bcff3980eed98a6cbea1027fad093155f203e066bb3a4126acc6202bff89d835cb8ce38394e51ce224d6e4dcac20feb

  • SSDEEP

    3072:mLm3QXJAZkAZjIru04xzeLubJlPIuoiy+1LDRrMi44JGlRAGD/bnDckVdNBh:mLFX07jawCKbSiy+1Rwi44AlRhDDD7h

Malware Config

Targets

    • Target

      2024-03-07_f295fc7dddcb42db43ec324a13c18e57_virlock

    • Size

      253KB

    • MD5

      f295fc7dddcb42db43ec324a13c18e57

    • SHA1

      ba80bde535e362cfac856e1f144b703a70cc6f4f

    • SHA256

      095db4de3eb016ca57e320213845b7381fc23d9d774812ffb98eef6dee734864

    • SHA512

      5af223aefa8f96f52dbf4cb24027d9393bcff3980eed98a6cbea1027fad093155f203e066bb3a4126acc6202bff89d835cb8ce38394e51ce224d6e4dcac20feb

    • SSDEEP

      3072:mLm3QXJAZkAZjIru04xzeLubJlPIuoiy+1LDRrMi44JGlRAGD/bnDckVdNBh:mLFX07jawCKbSiy+1Rwi44AlRhDDD7h

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (91) files with added filename extension

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks