General

  • Target

    6a22ea21d33d8baef1406631dddce552822102d2e0e4c5e29beb2853cf01ed16

  • Size

    1.6MB

  • Sample

    240612-e343ks1brr

  • MD5

    b8d5a62bb502b76783342c24da1ca17e

  • SHA1

    8eb62240069911c8e4393e8e4e88a38cb8a7840a

  • SHA256

    6a22ea21d33d8baef1406631dddce552822102d2e0e4c5e29beb2853cf01ed16

  • SHA512

    4449e211e3c92c37fe8e6163ea359d9d87f020879b2a3992800276b5248baf484772f0dbf9cc7cf4a3503d120bbc1d4504a2f0be8bc5f62bffa02f0bdf4230fa

  • SSDEEP

    24576:spM5863IGfTAVpalBtUfMxVVtes12FxwojKr98YGeGG9i:spQLYkTYp6BtUkxVVChjHZQs

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Targets

    • Target

      6a22ea21d33d8baef1406631dddce552822102d2e0e4c5e29beb2853cf01ed16

    • Size

      1.6MB

    • MD5

      b8d5a62bb502b76783342c24da1ca17e

    • SHA1

      8eb62240069911c8e4393e8e4e88a38cb8a7840a

    • SHA256

      6a22ea21d33d8baef1406631dddce552822102d2e0e4c5e29beb2853cf01ed16

    • SHA512

      4449e211e3c92c37fe8e6163ea359d9d87f020879b2a3992800276b5248baf484772f0dbf9cc7cf4a3503d120bbc1d4504a2f0be8bc5f62bffa02f0bdf4230fa

    • SSDEEP

      24576:spM5863IGfTAVpalBtUfMxVVtes12FxwojKr98YGeGG9i:spQLYkTYp6BtUkxVVChjHZQs

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Tasks