General

  • Target

    f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853

  • Size

    2.0MB

  • Sample

    240525-x5ngqafd4y

  • MD5

    ef18a99c8b9723393649c6ca4cc933e8

  • SHA1

    54a536648b045b164f18a3475d84dd017619335c

  • SHA256

    f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853

  • SHA512

    134c1eb25a1dbc7a3d78ad60ab477b8b9082bff58b5629f7ca8a43388ba6cd64de7985c927eb092fc2d765c1199cf6b49af292586bdcf0abb06048ce1930f3ad

  • SSDEEP

    49152:s4K3x1vUSJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18StIuoITsdZ

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

      f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853

    • Size

      2.0MB

    • MD5

      ef18a99c8b9723393649c6ca4cc933e8

    • SHA1

      54a536648b045b164f18a3475d84dd017619335c

    • SHA256

      f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853

    • SHA512

      134c1eb25a1dbc7a3d78ad60ab477b8b9082bff58b5629f7ca8a43388ba6cd64de7985c927eb092fc2d765c1199cf6b49af292586bdcf0abb06048ce1930f3ad

    • SSDEEP

      49152:s4K3x1vUSJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18StIuoITsdZ

    • 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