General

  • Target

    efb276959f457b244fc96a91999e44d713b6a011b0a77e94987f38db413c3619

  • Size

    2.0MB

  • Sample

    240525-kysfwace68

  • MD5

    06a2cd3144a81af7b6e1188225a2044d

  • SHA1

    73021c40ee8ca1500c3cf7dfc7a8e5e9cdbd6ff7

  • SHA256

    efb276959f457b244fc96a91999e44d713b6a011b0a77e94987f38db413c3619

  • SHA512

    6ababd00fdb61b72b356d8af0517901b171c5220c5837de608733f7c32e9e979ac895d600fa58fbc3b3fbc468d9d7894d0db4553c77c15d3738b2b474748530b

  • 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

      efb276959f457b244fc96a91999e44d713b6a011b0a77e94987f38db413c3619

    • Size

      2.0MB

    • MD5

      06a2cd3144a81af7b6e1188225a2044d

    • SHA1

      73021c40ee8ca1500c3cf7dfc7a8e5e9cdbd6ff7

    • SHA256

      efb276959f457b244fc96a91999e44d713b6a011b0a77e94987f38db413c3619

    • SHA512

      6ababd00fdb61b72b356d8af0517901b171c5220c5837de608733f7c32e9e979ac895d600fa58fbc3b3fbc468d9d7894d0db4553c77c15d3738b2b474748530b

    • 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