General

  • Target

    Setup.exe.vir

  • Size

    10.1MB

  • Sample

    240525-th3fkshh9t

  • MD5

    4f298e579a73803f788734a78cd1a067

  • SHA1

    0e64e60763e65ce46c9a2ffaf1dcb7694e060575

  • SHA256

    7d1aacb2de98d1e3e8fe87c782e896b92cf80b259f6a7d7246820b355ac0f943

  • SHA512

    fd8fcbd9f0c2f9098371eb45463c9bf42b257b23ec8c9e8e79fd524786f29c61577414989b60334646b992a3f5116e03ed92b99ff51902e3657fa254b6fc06db

  • SSDEEP

    196608:6cSu3XxiLS7jUJjRas3w+8wB6+d02F185c12dtkUoQ2kFl2ZnG46zsI7f1wGoO:/SuHxqS7Sdas3wHz+uM18i12dtkUTRl5

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      Setup.exe.vir

    • Size

      10.1MB

    • MD5

      4f298e579a73803f788734a78cd1a067

    • SHA1

      0e64e60763e65ce46c9a2ffaf1dcb7694e060575

    • SHA256

      7d1aacb2de98d1e3e8fe87c782e896b92cf80b259f6a7d7246820b355ac0f943

    • SHA512

      fd8fcbd9f0c2f9098371eb45463c9bf42b257b23ec8c9e8e79fd524786f29c61577414989b60334646b992a3f5116e03ed92b99ff51902e3657fa254b6fc06db

    • SSDEEP

      196608:6cSu3XxiLS7jUJjRas3w+8wB6+d02F185c12dtkUoQ2kFl2ZnG46zsI7f1wGoO:/SuHxqS7Sdas3wHz+uM18i12dtkUTRl5

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • 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

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Tasks