General

  • Target

    ea9970547a07bbfa11dd5a4c3cfab268480b3af2c1ae89d84a6f3a45c3e7eeef

  • Size

    2.0MB

  • Sample

    240522-179draba92

  • MD5

    39dacf4f6539ad97a1f515203eb3900f

  • SHA1

    f43751e1a41d0d5d6ff287977acab7faf6586360

  • SHA256

    ea9970547a07bbfa11dd5a4c3cfab268480b3af2c1ae89d84a6f3a45c3e7eeef

  • SHA512

    b35554d09d9008e0f47f1fffd70bed42bcd9581761a38132827890044752fe27af75ca0a052bb6edfdc4bae5b3ae79386baa1b66cc2eeee805891dee8bb14ac2

  • SSDEEP

    49152:7QzHt472DZJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt3tIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      ea9970547a07bbfa11dd5a4c3cfab268480b3af2c1ae89d84a6f3a45c3e7eeef

    • Size

      2.0MB

    • MD5

      39dacf4f6539ad97a1f515203eb3900f

    • SHA1

      f43751e1a41d0d5d6ff287977acab7faf6586360

    • SHA256

      ea9970547a07bbfa11dd5a4c3cfab268480b3af2c1ae89d84a6f3a45c3e7eeef

    • SHA512

      b35554d09d9008e0f47f1fffd70bed42bcd9581761a38132827890044752fe27af75ca0a052bb6edfdc4bae5b3ae79386baa1b66cc2eeee805891dee8bb14ac2

    • SSDEEP

      49152:7QzHt472DZJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt3tIuoITsdZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

4
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

4
T1005

Tasks