General

  • Target

    2d9d61604721582464602a7fed966dd0d90b3d1b7f999a83371f6964dd257827

  • Size

    2.0MB

  • Sample

    240524-v83dyaea56

  • MD5

    88644907304580a45b6de29955a3fdc6

  • SHA1

    1e64d12c954cfd459ae9c5cdcb0481f146a77044

  • SHA256

    2d9d61604721582464602a7fed966dd0d90b3d1b7f999a83371f6964dd257827

  • SHA512

    82263c4eb0d387fa0ae8fa456eff5cefc682719c108287303f88e56bce29eb411c1944d059920a42db18a90afd2453aea7ef1615f8cfb9d0efef61a430355cd6

  • SSDEEP

    49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ

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

      2d9d61604721582464602a7fed966dd0d90b3d1b7f999a83371f6964dd257827

    • Size

      2.0MB

    • MD5

      88644907304580a45b6de29955a3fdc6

    • SHA1

      1e64d12c954cfd459ae9c5cdcb0481f146a77044

    • SHA256

      2d9d61604721582464602a7fed966dd0d90b3d1b7f999a83371f6964dd257827

    • SHA512

      82263c4eb0d387fa0ae8fa456eff5cefc682719c108287303f88e56bce29eb411c1944d059920a42db18a90afd2453aea7ef1615f8cfb9d0efef61a430355cd6

    • SSDEEP

      49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ

    • 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