General

  • Target

    21503e0c8c9f454260c08a20aedf0d6a633103ffe1feccdb9efdb9ceb7b317de

  • Size

    2.0MB

  • Sample

    240522-2s1nqsca85

  • MD5

    e033a5ed3c75d01096c660013193bccc

  • SHA1

    0d47a0eb6a6fbd0997fcad076baa7f002a81358b

  • SHA256

    21503e0c8c9f454260c08a20aedf0d6a633103ffe1feccdb9efdb9ceb7b317de

  • SHA512

    d3da7e1aa439fe33a542019a0328fdb2f138c1753d9e8425fcd17b7863613c323a590371c415756ef757851c95e7fe8cf16bebb93d2aa7ec0cfb1fbdee9284c0

  • SSDEEP

    49152:7QzHt472DpJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtbtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      21503e0c8c9f454260c08a20aedf0d6a633103ffe1feccdb9efdb9ceb7b317de

    • Size

      2.0MB

    • MD5

      e033a5ed3c75d01096c660013193bccc

    • SHA1

      0d47a0eb6a6fbd0997fcad076baa7f002a81358b

    • SHA256

      21503e0c8c9f454260c08a20aedf0d6a633103ffe1feccdb9efdb9ceb7b317de

    • SHA512

      d3da7e1aa439fe33a542019a0328fdb2f138c1753d9e8425fcd17b7863613c323a590371c415756ef757851c95e7fe8cf16bebb93d2aa7ec0cfb1fbdee9284c0

    • SSDEEP

      49152:7QzHt472DpJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtbtIuoITsdZ

    • 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