General

  • Target

    d091a335d20ecee8afd9d4b38399d9418acfebd7728b7af0936b7073c5104f64

  • Size

    2.0MB

  • Sample

    240526-efr5hadh9w

  • MD5

    d3ec0f945c074bc439c762f87b5a150a

  • SHA1

    6cbd94da1904f68030ff0cf523f01f665eff60d7

  • SHA256

    d091a335d20ecee8afd9d4b38399d9418acfebd7728b7af0936b7073c5104f64

  • SHA512

    aad95d1f8c811196d11a8972c04d052180f5d4a96e0ddf54af579c499cb2e11fbc402f217f0afeaed5bc63b7c805b1f926677d2d8d491976e2ea8925adc483ef

  • SSDEEP

    49152:s4K3x1vUCJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18CtIuoITsdZ

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

      d091a335d20ecee8afd9d4b38399d9418acfebd7728b7af0936b7073c5104f64

    • Size

      2.0MB

    • MD5

      d3ec0f945c074bc439c762f87b5a150a

    • SHA1

      6cbd94da1904f68030ff0cf523f01f665eff60d7

    • SHA256

      d091a335d20ecee8afd9d4b38399d9418acfebd7728b7af0936b7073c5104f64

    • SHA512

      aad95d1f8c811196d11a8972c04d052180f5d4a96e0ddf54af579c499cb2e11fbc402f217f0afeaed5bc63b7c805b1f926677d2d8d491976e2ea8925adc483ef

    • SSDEEP

      49152:s4K3x1vUCJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18CtIuoITsdZ

    • 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