General

  • Target

    1f4eb4acb38188638cecaddc79e0aa0bcb39bb153ad81d5d7d3f8db657fad7f7

  • Size

    2.0MB

  • Sample

    240525-ksq1vsca6t

  • MD5

    1471f5103664cd4e91f1b1fcc947ce1e

  • SHA1

    270b4fe97555ad6f909d9af049ed0bb91a6d1787

  • SHA256

    1f4eb4acb38188638cecaddc79e0aa0bcb39bb153ad81d5d7d3f8db657fad7f7

  • SHA512

    f1f17fdb3759a2fd346ce388b2ff5a30abaaf77daeb7d7dc8461bbfea08ab01da00428598c1cb0efc2cc6405a0dc321a6dac0fdf9922a72ea197e8b705262451

  • SSDEEP

    49152:s4K3x1vU+JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18+tIuoITsdZ

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

      1f4eb4acb38188638cecaddc79e0aa0bcb39bb153ad81d5d7d3f8db657fad7f7

    • Size

      2.0MB

    • MD5

      1471f5103664cd4e91f1b1fcc947ce1e

    • SHA1

      270b4fe97555ad6f909d9af049ed0bb91a6d1787

    • SHA256

      1f4eb4acb38188638cecaddc79e0aa0bcb39bb153ad81d5d7d3f8db657fad7f7

    • SHA512

      f1f17fdb3759a2fd346ce388b2ff5a30abaaf77daeb7d7dc8461bbfea08ab01da00428598c1cb0efc2cc6405a0dc321a6dac0fdf9922a72ea197e8b705262451

    • SSDEEP

      49152:s4K3x1vU+JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18+tIuoITsdZ

    • 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