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General

  • Target

    2024-10-21_75f8ebb1017dba2c5c59b0b00e820afb_virlock

  • Size

    640KB

  • Sample

    241021-bwd12atcqj

  • MD5

    75f8ebb1017dba2c5c59b0b00e820afb

  • SHA1

    d7a509ae91a28ca4a41d3289a129b877f80627a1

  • SHA256

    986ae6086058d69ddc3473b9e7c2648577a596567ee20b1c3fd7981b52503f44

  • SHA512

    b5c4a919ed90301bc9965ebc383d80619537252a87e4716e0dd81f148ee579857fc604923fb3f2870a0a4660ee5881cf6c4656216f46430be29a75c9b0a3eae3

  • SSDEEP

    12288:0d+KlO1DJkh2YqSOdiFTbx0l56czMRmX33lgQpuTpi1mzlYnahtN5X5A2JX29znb:IYDA2Y3OMTbC2dkn9puADlp

Malware Config

Targets

    • Target

      2024-10-21_75f8ebb1017dba2c5c59b0b00e820afb_virlock

    • Size

      640KB

    • MD5

      75f8ebb1017dba2c5c59b0b00e820afb

    • SHA1

      d7a509ae91a28ca4a41d3289a129b877f80627a1

    • SHA256

      986ae6086058d69ddc3473b9e7c2648577a596567ee20b1c3fd7981b52503f44

    • SHA512

      b5c4a919ed90301bc9965ebc383d80619537252a87e4716e0dd81f148ee579857fc604923fb3f2870a0a4660ee5881cf6c4656216f46430be29a75c9b0a3eae3

    • SSDEEP

      12288:0d+KlO1DJkh2YqSOdiFTbx0l56czMRmX33lgQpuTpi1mzlYnahtN5X5A2JX29znb:IYDA2Y3OMTbC2dkn9puADlp

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (80) 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