General

  • Target

    8d437030a77d16ef50bfb47bd03cd26a6e89a800182eadc1f85dc579f26ce8d2

  • Size

    2.0MB

  • Sample

    240526-g67c8ahg8x

  • MD5

    cb1169125f0282d5abd6d7cff4479113

  • SHA1

    0e5f21515e9831e297da9bbd4cedf985777fea47

  • SHA256

    8d437030a77d16ef50bfb47bd03cd26a6e89a800182eadc1f85dc579f26ce8d2

  • SHA512

    fcb4cb41d44b1dcc0b1e64794cb29a98b28d4076effcda94ba3374ecabb6abf96e2c731889d36349276dadf7cb7cab463030710ba82d6430a19d92f79b01dc52

  • SSDEEP

    49152:s4K3x1vU6JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex186tIuoITsdZ

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

      8d437030a77d16ef50bfb47bd03cd26a6e89a800182eadc1f85dc579f26ce8d2

    • Size

      2.0MB

    • MD5

      cb1169125f0282d5abd6d7cff4479113

    • SHA1

      0e5f21515e9831e297da9bbd4cedf985777fea47

    • SHA256

      8d437030a77d16ef50bfb47bd03cd26a6e89a800182eadc1f85dc579f26ce8d2

    • SHA512

      fcb4cb41d44b1dcc0b1e64794cb29a98b28d4076effcda94ba3374ecabb6abf96e2c731889d36349276dadf7cb7cab463030710ba82d6430a19d92f79b01dc52

    • SSDEEP

      49152:s4K3x1vU6JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex186tIuoITsdZ

    • 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