General

  • Target

    b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b

  • Size

    2.0MB

  • Sample

    240525-vb2fdabe25

  • MD5

    ad2f28bc16a608e1dbbba505bc6564f0

  • SHA1

    3950c434e5bd879165873189d2328a40ebb6a963

  • SHA256

    b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b

  • SHA512

    48d933394c1e39fea2e8b914651605e01f00022d56e9b737440f25afd306b97843b1e0261f728c7e18023e3e0638450e60924b549f4db3d1260f2c31dca03cba

  • 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

      b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b

    • Size

      2.0MB

    • MD5

      ad2f28bc16a608e1dbbba505bc6564f0

    • SHA1

      3950c434e5bd879165873189d2328a40ebb6a963

    • SHA256

      b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b

    • SHA512

      48d933394c1e39fea2e8b914651605e01f00022d56e9b737440f25afd306b97843b1e0261f728c7e18023e3e0638450e60924b549f4db3d1260f2c31dca03cba

    • 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