General

  • Target

    19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016

  • Size

    2.0MB

  • Sample

    240523-ancmkaee5z

  • MD5

    aa7905ded270ddabe686567856825cd0

  • SHA1

    d6e92b3b919c5aea441cdcc9c4968ed409268c5d

  • SHA256

    19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016

  • SHA512

    fa6223f9372e20c6cb8b5992e11dd0b7b3afc65baf6e5e05ae45f7a464441d81141cf3b2e6ac4cd89bf6d98bf4758ad26e6725960993ac7751311da39c4a0a9d

  • SSDEEP

    49152:7QzHt472DZJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt3tIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016

    • Size

      2.0MB

    • MD5

      aa7905ded270ddabe686567856825cd0

    • SHA1

      d6e92b3b919c5aea441cdcc9c4968ed409268c5d

    • SHA256

      19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016

    • SHA512

      fa6223f9372e20c6cb8b5992e11dd0b7b3afc65baf6e5e05ae45f7a464441d81141cf3b2e6ac4cd89bf6d98bf4758ad26e6725960993ac7751311da39c4a0a9d

    • SSDEEP

      49152:7QzHt472DZJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt3tIuoITsdZ

    • 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 local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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

4
T1552

Credentials In Files

4
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

4
T1005

Tasks