Resubmissions

14-06-2024 11:37

240614-nrfqaasglk 10

14-06-2024 11:31

240614-nmt24sseqq 10

General

  • Target

    https://misprogramaspc.com/itoolab-watsgo/

  • Sample

    240614-nrfqaasglk

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      https://misprogramaspc.com/itoolab-watsgo/

    • 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

    • 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 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.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

4
T1552.001

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Collection

Data from Local System

4
T1005

Command and Control

Web Service

1
T1102

Tasks