Resubmissions

25-05-2024 16:32

240525-t2a6faae9w 10

25-05-2024 15:14

240525-smrdfagf9t 10

General

  • Target

    Setup.exe.vir

  • Size

    10.1MB

  • Sample

    240525-t2a6faae9w

  • MD5

    1c57a22d32a4e973c63c90f84946149e

  • SHA1

    98954b5054e5c4bb6e509bb34bf60b282f6efeea

  • SHA256

    a651607b9bba24d9c35bde35df0c398a0c916fae71b9b4c37ed13b444a4ec629

  • SHA512

    670216e4f8ef062e45dd9a7df0ce604b839f7e1e6eb51aeff6d95a96b12d882c1e50a0dc8e13df89e62cd3ea82031b385d254c5c0c807702b2d6e27e99617e6d

  • SSDEEP

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

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      Setup.exe.vir

    • Size

      10.1MB

    • MD5

      1c57a22d32a4e973c63c90f84946149e

    • SHA1

      98954b5054e5c4bb6e509bb34bf60b282f6efeea

    • SHA256

      a651607b9bba24d9c35bde35df0c398a0c916fae71b9b4c37ed13b444a4ec629

    • SHA512

      670216e4f8ef062e45dd9a7df0ce604b839f7e1e6eb51aeff6d95a96b12d882c1e50a0dc8e13df89e62cd3ea82031b385d254c5c0c807702b2d6e27e99617e6d

    • 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