General

  • Target

    5156ec4c405de9739771945e8cd62dec3df165e4385dc461e4c0cb0608c24583

  • Size

    2.0MB

  • Sample

    240524-ws75xsef89

  • MD5

    5911a3389509555ed3f7e8a1049efbea

  • SHA1

    42116f6c1fc1de831c7d28d9d4931796f9241d89

  • SHA256

    5156ec4c405de9739771945e8cd62dec3df165e4385dc461e4c0cb0608c24583

  • SHA512

    53a87b77f1b5dc15d1c22baa3eac9af256c13cbeb194a01a6b5694f080b4390d31f97d5244d824bc36042bea35b83817225369937cc6f271497f6f5ba4303496

  • SSDEEP

    49152:s4K3x1vUuJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18utIuoITsdZ

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

      5156ec4c405de9739771945e8cd62dec3df165e4385dc461e4c0cb0608c24583

    • Size

      2.0MB

    • MD5

      5911a3389509555ed3f7e8a1049efbea

    • SHA1

      42116f6c1fc1de831c7d28d9d4931796f9241d89

    • SHA256

      5156ec4c405de9739771945e8cd62dec3df165e4385dc461e4c0cb0608c24583

    • SHA512

      53a87b77f1b5dc15d1c22baa3eac9af256c13cbeb194a01a6b5694f080b4390d31f97d5244d824bc36042bea35b83817225369937cc6f271497f6f5ba4303496

    • SSDEEP

      49152:s4K3x1vUuJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18utIuoITsdZ

    • 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