General

  • Target

    3fb9822d0401bb5ad5db1285ee042ad45d740cfc1ea1dc50d87d550e5e1a96b7

  • Size

    2.0MB

  • Sample

    240525-zb5j9ahh77

  • MD5

    18b4f9cea381dfbcabddef31311175be

  • SHA1

    049fe38a154c72da7b80bc14ebc599102a52fe93

  • SHA256

    3fb9822d0401bb5ad5db1285ee042ad45d740cfc1ea1dc50d87d550e5e1a96b7

  • SHA512

    a32cc7bce3f0db625df2a9fffcbf6391bb84cce8033fad45082e657e6f8a09c2ce829b8496eb907b351208511fed7c15def3636ce613e020a6697b4d6ea805ac

  • SSDEEP

    49152:s4K3x1vU2JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex182tIuoITsdZ

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

      3fb9822d0401bb5ad5db1285ee042ad45d740cfc1ea1dc50d87d550e5e1a96b7

    • Size

      2.0MB

    • MD5

      18b4f9cea381dfbcabddef31311175be

    • SHA1

      049fe38a154c72da7b80bc14ebc599102a52fe93

    • SHA256

      3fb9822d0401bb5ad5db1285ee042ad45d740cfc1ea1dc50d87d550e5e1a96b7

    • SHA512

      a32cc7bce3f0db625df2a9fffcbf6391bb84cce8033fad45082e657e6f8a09c2ce829b8496eb907b351208511fed7c15def3636ce613e020a6697b4d6ea805ac

    • SSDEEP

      49152:s4K3x1vU2JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex182tIuoITsdZ

    • 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