General

  • Target

    8d90b667f68b34121a5f1670e59de5aeba3ff17ad36020b84fc3014c09fcc665

  • Size

    2.0MB

  • Sample

    240522-3th1radf7y

  • MD5

    f7e6d8a25d30462de2b4c271358e9b1a

  • SHA1

    413bf354c7f1b8c5130626a05c9bade3b1de59d9

  • SHA256

    8d90b667f68b34121a5f1670e59de5aeba3ff17ad36020b84fc3014c09fcc665

  • SHA512

    2c65a8c4b051c16e035faf17e0aa59429a41b8c2e549368be1ffdf7a09baf103caf84cde82d5c0b92e9812f3fd793d246cf0079899ae82d6eb83971eb6c82bff

  • SSDEEP

    49152:7QzHt472DoJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtitIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      8d90b667f68b34121a5f1670e59de5aeba3ff17ad36020b84fc3014c09fcc665

    • Size

      2.0MB

    • MD5

      f7e6d8a25d30462de2b4c271358e9b1a

    • SHA1

      413bf354c7f1b8c5130626a05c9bade3b1de59d9

    • SHA256

      8d90b667f68b34121a5f1670e59de5aeba3ff17ad36020b84fc3014c09fcc665

    • SHA512

      2c65a8c4b051c16e035faf17e0aa59429a41b8c2e549368be1ffdf7a09baf103caf84cde82d5c0b92e9812f3fd793d246cf0079899ae82d6eb83971eb6c82bff

    • SSDEEP

      49152:7QzHt472DoJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtitIuoITsdZ

    • 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