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General

  • Target

    2024-02-17_05ce95edcbcab9d773fa44936d9126ce_virlock

  • Size

    449KB

  • Sample

    240217-g438saca8y

  • MD5

    05ce95edcbcab9d773fa44936d9126ce

  • SHA1

    891ce94ae7cc97e85b13de90fefe1ad39c60a44c

  • SHA256

    ca87ecf0bd44c26eb7ea277b83ce44b6242ac04e8139d64f71db20104f4f3fe3

  • SHA512

    0107f3eb50fbfd04f2c123d6a406e196d12cc4a7df60f102de09f5e42d734ff7ec9ddab1238517eb2afd13ca4d44781b391bc53a258eb5d84074f40529bc02de

  • SSDEEP

    6144:uzF6vMNTma7enz6wpsgFn3NnMjgSkbh+U0S7pE3DU4GCkU8ohvN9JA2qsTHt:uzFqMNTGeoZWgSkN+9bzvT

Malware Config

Targets

    • Target

      2024-02-17_05ce95edcbcab9d773fa44936d9126ce_virlock

    • Size

      449KB

    • MD5

      05ce95edcbcab9d773fa44936d9126ce

    • SHA1

      891ce94ae7cc97e85b13de90fefe1ad39c60a44c

    • SHA256

      ca87ecf0bd44c26eb7ea277b83ce44b6242ac04e8139d64f71db20104f4f3fe3

    • SHA512

      0107f3eb50fbfd04f2c123d6a406e196d12cc4a7df60f102de09f5e42d734ff7ec9ddab1238517eb2afd13ca4d44781b391bc53a258eb5d84074f40529bc02de

    • SSDEEP

      6144:uzF6vMNTma7enz6wpsgFn3NnMjgSkbh+U0S7pE3DU4GCkU8ohvN9JA2qsTHt:uzFqMNTGeoZWgSkN+9bzvT

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (77) 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