General

  • Target

    8d7dc4f23e9adc728194fc434a5459fb9e6655c9c51a5cd5b3b50bc4f4e16116

  • Size

    2.0MB

  • Sample

    240525-gcplbagb3x

  • MD5

    b48a1cb12a968a02ad9b418040b345ac

  • SHA1

    6079e9f9f6f656e5272b29a7499263babdf03778

  • SHA256

    8d7dc4f23e9adc728194fc434a5459fb9e6655c9c51a5cd5b3b50bc4f4e16116

  • SHA512

    932208fc65583bbe3339a425196e15ef1a0db974a828a5bdb1c00cd3da62e39617a4128a10c82567a7529f890b77d431a785ab067a6bcc965c0c6d9b4e84201c

  • SSDEEP

    49152:s4K3x1vUaJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18atIuoITsdZ

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

      8d7dc4f23e9adc728194fc434a5459fb9e6655c9c51a5cd5b3b50bc4f4e16116

    • Size

      2.0MB

    • MD5

      b48a1cb12a968a02ad9b418040b345ac

    • SHA1

      6079e9f9f6f656e5272b29a7499263babdf03778

    • SHA256

      8d7dc4f23e9adc728194fc434a5459fb9e6655c9c51a5cd5b3b50bc4f4e16116

    • SHA512

      932208fc65583bbe3339a425196e15ef1a0db974a828a5bdb1c00cd3da62e39617a4128a10c82567a7529f890b77d431a785ab067a6bcc965c0c6d9b4e84201c

    • SSDEEP

      49152:s4K3x1vUaJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18atIuoITsdZ

    • 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