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General

  • Target

    2024-10-21_6c7672fd72a84b2be508b4c6addeedf1_virlock

  • Size

    275KB

  • Sample

    241021-cahyjavbnr

  • MD5

    6c7672fd72a84b2be508b4c6addeedf1

  • SHA1

    7e17773aa1a3dd774108582822f54c1cad36da98

  • SHA256

    e02b9cfe5343afa74fae48a37551aed04b34e1bdcb94485c66108b9a4d382201

  • SHA512

    f73f03bd79603211653c026cd8e1caad5626949e6a040e68c538c462f5873ab0f4496aa53a9eb29030eec7901491df53fb2fed87ad1dd29bc01b6f743591d979

  • SSDEEP

    3072:35LuCVHRHYMjs65id1EMHyqW3/yMbBefmJ+aOPf1JIpI0Nj9vd4hfE/az0CW:du+Hh81EMHyPyMcfo+x3/0NZvahfE/kC

Malware Config

Targets

    • Target

      2024-10-21_6c7672fd72a84b2be508b4c6addeedf1_virlock

    • Size

      275KB

    • MD5

      6c7672fd72a84b2be508b4c6addeedf1

    • SHA1

      7e17773aa1a3dd774108582822f54c1cad36da98

    • SHA256

      e02b9cfe5343afa74fae48a37551aed04b34e1bdcb94485c66108b9a4d382201

    • SHA512

      f73f03bd79603211653c026cd8e1caad5626949e6a040e68c538c462f5873ab0f4496aa53a9eb29030eec7901491df53fb2fed87ad1dd29bc01b6f743591d979

    • SSDEEP

      3072:35LuCVHRHYMjs65id1EMHyqW3/yMbBefmJ+aOPf1JIpI0Nj9vd4hfE/az0CW:du+Hh81EMHyPyMcfo+x3/0NZvahfE/kC

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (51) 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