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General

  • Target

    2024-03-13_e9633438e807624d5befa71903f1b54b_virlock

  • Size

    138KB

  • Sample

    240313-jkw2gahh53

  • MD5

    e9633438e807624d5befa71903f1b54b

  • SHA1

    c8a377d0459db18a999c814ed67384d7291f66e9

  • SHA256

    fd7519c5a8ce2d5441e1d2864306b7f3ab3f04c5825d61d2683d877dcdbc32d0

  • SHA512

    167798b5ab5cc7363d6c1a78ac1308153278ea3e13c3d0f0b9a16a7e52f1d0b144dff4e4b9f4d4d24af96601ecc09ee4a7fe2fc8a76ae883bca508dd75d1c04b

  • SSDEEP

    3072:sLlUivwSMHNuv/jUrDKPvAqD2odKJqA+j0XXaXBjlX1pZ/H2jPYRDTX:YobHIIvKPvAqD2odK0b0ufTpy2DT

Malware Config

Targets

    • Target

      2024-03-13_e9633438e807624d5befa71903f1b54b_virlock

    • Size

      138KB

    • MD5

      e9633438e807624d5befa71903f1b54b

    • SHA1

      c8a377d0459db18a999c814ed67384d7291f66e9

    • SHA256

      fd7519c5a8ce2d5441e1d2864306b7f3ab3f04c5825d61d2683d877dcdbc32d0

    • SHA512

      167798b5ab5cc7363d6c1a78ac1308153278ea3e13c3d0f0b9a16a7e52f1d0b144dff4e4b9f4d4d24af96601ecc09ee4a7fe2fc8a76ae883bca508dd75d1c04b

    • SSDEEP

      3072:sLlUivwSMHNuv/jUrDKPvAqD2odKJqA+j0XXaXBjlX1pZ/H2jPYRDTX:YobHIIvKPvAqD2odK0b0ufTpy2DT

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (79) 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