General

  • Target

    6398d2b9f5ed102d966dbe09c1ce41786fc4064a1a4f2def54683d3b70db198e

  • Size

    2.0MB

  • Sample

    240524-ysgdbahc7v

  • MD5

    c28420d6d2a8d50673d73d0535581076

  • SHA1

    a216d616534953096a1a87381174fb716a69e061

  • SHA256

    6398d2b9f5ed102d966dbe09c1ce41786fc4064a1a4f2def54683d3b70db198e

  • SHA512

    234ee2a96f0aa147e3aaaa0175ccea6e6e2c101d646d182f38cfce0d13cc17083dcf779182f827de72dabfd01b988be56480a4a07d3a9e87595018a5036df687

  • SSDEEP

    49152:s4K3x1vUmJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18mtIuoITsdZ

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

      6398d2b9f5ed102d966dbe09c1ce41786fc4064a1a4f2def54683d3b70db198e

    • Size

      2.0MB

    • MD5

      c28420d6d2a8d50673d73d0535581076

    • SHA1

      a216d616534953096a1a87381174fb716a69e061

    • SHA256

      6398d2b9f5ed102d966dbe09c1ce41786fc4064a1a4f2def54683d3b70db198e

    • SHA512

      234ee2a96f0aa147e3aaaa0175ccea6e6e2c101d646d182f38cfce0d13cc17083dcf779182f827de72dabfd01b988be56480a4a07d3a9e87595018a5036df687

    • SSDEEP

      49152:s4K3x1vUmJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18mtIuoITsdZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Tasks