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General

  • Target

    2024-04-29_20753ce69b2f6bb82b52c68c8e8efc92_virlock

  • Size

    592KB

  • Sample

    240429-xerrfshg86

  • MD5

    20753ce69b2f6bb82b52c68c8e8efc92

  • SHA1

    ed7105985b3371658a9b9fdd8b6c03bf7b605515

  • SHA256

    0b2c75227acf156578d1e09a908f2cef39b5b937f4aef79952c4cf9e486f25ed

  • SHA512

    67043f0cc2c84703ac6200d0ccc5ab02f39632cba9ccb1ac5d97522ec8629968efeeed5020ea1f32f2aed688053712a4ad2a22ef7f47adb473e0eda9c1398559

  • SSDEEP

    12288:USIE2jq4eCjdhkRjmhCVVt7f8GlHnHwNINVoZzx8Z0rsfmYID1:mWDRtVYAVoZzx8arsfmT1

Malware Config

Targets

    • Target

      2024-04-29_20753ce69b2f6bb82b52c68c8e8efc92_virlock

    • Size

      592KB

    • MD5

      20753ce69b2f6bb82b52c68c8e8efc92

    • SHA1

      ed7105985b3371658a9b9fdd8b6c03bf7b605515

    • SHA256

      0b2c75227acf156578d1e09a908f2cef39b5b937f4aef79952c4cf9e486f25ed

    • SHA512

      67043f0cc2c84703ac6200d0ccc5ab02f39632cba9ccb1ac5d97522ec8629968efeeed5020ea1f32f2aed688053712a4ad2a22ef7f47adb473e0eda9c1398559

    • SSDEEP

      12288:USIE2jq4eCjdhkRjmhCVVt7f8GlHnHwNINVoZzx8Z0rsfmYID1:mWDRtVYAVoZzx8arsfmT1

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (63) 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