General

  • Target

    bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203

  • Size

    2.0MB

  • Sample

    240525-wl7ktacf81

  • MD5

    522d64a252bd7e004a4100c8e69aa411

  • SHA1

    46a8c318eea6440e6649d682f189186b97c3fb15

  • SHA256

    bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203

  • SHA512

    8b8744e6d700bf76641c391ae1f9106e0fe746729b7af5e36ce0b1c16b9a31dcf18c26462a6c8e4efcebd84487576a0872bcfe4971c937aaf39b4500f094832c

  • SSDEEP

    49152:s4K3x1vUyJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18ytIuoITsdZ

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

      bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203

    • Size

      2.0MB

    • MD5

      522d64a252bd7e004a4100c8e69aa411

    • SHA1

      46a8c318eea6440e6649d682f189186b97c3fb15

    • SHA256

      bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203

    • SHA512

      8b8744e6d700bf76641c391ae1f9106e0fe746729b7af5e36ce0b1c16b9a31dcf18c26462a6c8e4efcebd84487576a0872bcfe4971c937aaf39b4500f094832c

    • SSDEEP

      49152:s4K3x1vUyJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18ytIuoITsdZ

    • 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