General

  • Target

    69d6b3006c5c81e6188d4095048f2a1afab688a12069f1142af9b66694ec1f72

  • Size

    2.0MB

  • Sample

    240525-24wtxsee98

  • MD5

    a4a06031f6c6fa2887ef9fdd7e4f0bd9

  • SHA1

    4c2eb27ebc49a951c410959b3c1b2d53806deca3

  • SHA256

    69d6b3006c5c81e6188d4095048f2a1afab688a12069f1142af9b66694ec1f72

  • SHA512

    67472131b907e8993c5fd8e8ed77612b1de13f0b5823a3824cd4dff88e3ac9fbe6a3f184de94bb932bc208e60a8ba5d6ed0bcd2a12514da267f33aa5b12345bc

  • SSDEEP

    49152:s4K3x1vUGJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18GtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Targets

    • Target

      69d6b3006c5c81e6188d4095048f2a1afab688a12069f1142af9b66694ec1f72

    • Size

      2.0MB

    • MD5

      a4a06031f6c6fa2887ef9fdd7e4f0bd9

    • SHA1

      4c2eb27ebc49a951c410959b3c1b2d53806deca3

    • SHA256

      69d6b3006c5c81e6188d4095048f2a1afab688a12069f1142af9b66694ec1f72

    • SHA512

      67472131b907e8993c5fd8e8ed77612b1de13f0b5823a3824cd4dff88e3ac9fbe6a3f184de94bb932bc208e60a8ba5d6ed0bcd2a12514da267f33aa5b12345bc

    • SSDEEP

      49152:s4K3x1vUGJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18GtIuoITsdZ

    • 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