General

  • Target

    aefdfdf53c120a2a04fede7c4981b5c963b525e7278e0b503d55a52f8887df78

  • Size

    2.0MB

  • Sample

    240527-csheqadg42

  • MD5

    5fd8040087238df200330a591e5b0d26

  • SHA1

    a1072bcbff9307ba2e3819f5c80a956b141979b3

  • SHA256

    aefdfdf53c120a2a04fede7c4981b5c963b525e7278e0b503d55a52f8887df78

  • SHA512

    9b9e16e3fe10dd96def3cdae306b4db37482e1c6639c52be91d3b6057d3843ba913bf840afd9e3fe9775289678464da0a5935a9407ada00f31501b77a1395e16

  • SSDEEP

    49152:OePpQEtJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEttIuoITsdZ

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

      aefdfdf53c120a2a04fede7c4981b5c963b525e7278e0b503d55a52f8887df78

    • Size

      2.0MB

    • MD5

      5fd8040087238df200330a591e5b0d26

    • SHA1

      a1072bcbff9307ba2e3819f5c80a956b141979b3

    • SHA256

      aefdfdf53c120a2a04fede7c4981b5c963b525e7278e0b503d55a52f8887df78

    • SHA512

      9b9e16e3fe10dd96def3cdae306b4db37482e1c6639c52be91d3b6057d3843ba913bf840afd9e3fe9775289678464da0a5935a9407ada00f31501b77a1395e16

    • SSDEEP

      49152:OePpQEtJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEttIuoITsdZ

    • 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