Resubmissions

12/12/2025, 06:22

251212-g49esscj5110

02/12/2025, 16:28

251202-tyzdvsvmdw10

General

  • Target
    2025-12-02_708d3d81b162487b8e1e1ec4d0cc1f1b_cobalt-strike
  • Size 5.0MB
  • Sample251202-tyzdvsvmdw
  • SHA256 a0c4faaa16d893503f915c69548418a9f1500236885b16026a8e6758f7d414aa
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

Botnet
  • 1111

C2
  • http://37.221.66.19

Attributes
  • url_path

    /05f640dd85154ef9.php

rc4.plain

Extracted

Family
  • vidar

Version
  • 16.8

Botnet
  • 0473ab0852fb153f2f2a3f2bde94a4dc

Targets

    • Target
      2025-12-02_708d3d81b162487b8e1e1ec4d0cc1f1b_cobalt-strike
    • Size 5.0MB
    • SHA256 a0c4faaa16d893503f915c69548418a9f1500236885b16026a8e6758f7d414aa
    • MD5 SHA1 SHA512 SSDEEP
    • Detects Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar family

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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 Enterprise v16

Tasks