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General

  • Target

    2024-04-06_918aa9486825f491eacb4cbc5151179d_virlock

  • Size

    134KB

  • Sample

    240406-rvh7csda33

  • MD5

    918aa9486825f491eacb4cbc5151179d

  • SHA1

    bf96712d595d3a4690a6a4f903441925538d7bcd

  • SHA256

    03fe2b3299b137ad14a7764b20a00189a53b501a849c34a5a6aad99214869ee6

  • SHA512

    6cb475c7cf85d1505f3b410d84f573b7eea4e7b152b0aaa65b100b0aa37f1bc7883ac31c7268488ef61db66c87996bb13f15fab830a2913cd545aa4ad8ed8a07

  • SSDEEP

    3072:L3D8ZkcR9JjFs4SmEBRrs6Tdgd1H9n4qeCntSlk:3eR3JjS4PEL4Md+1dn4PUwO

Malware Config

Targets

    • Target

      2024-04-06_918aa9486825f491eacb4cbc5151179d_virlock

    • Size

      134KB

    • MD5

      918aa9486825f491eacb4cbc5151179d

    • SHA1

      bf96712d595d3a4690a6a4f903441925538d7bcd

    • SHA256

      03fe2b3299b137ad14a7764b20a00189a53b501a849c34a5a6aad99214869ee6

    • SHA512

      6cb475c7cf85d1505f3b410d84f573b7eea4e7b152b0aaa65b100b0aa37f1bc7883ac31c7268488ef61db66c87996bb13f15fab830a2913cd545aa4ad8ed8a07

    • SSDEEP

      3072:L3D8ZkcR9JjFs4SmEBRrs6Tdgd1H9n4qeCntSlk:3eR3JjS4PEL4Md+1dn4PUwO

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (58) 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.

    • Deletes itself

    • 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