General

  • Target

    98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b

  • Size

    2.0MB

  • Sample

    240522-2dkc7sbc5w

  • MD5

    e0a64ce738c511638a9daaf1c9049475

  • SHA1

    30c3234419fcd5489ef6a6eb2310ed1441de9c44

  • SHA256

    98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b

  • SHA512

    4970812501ea327631f5930005c918bd464bc0d40d953db92065826287d2afaad82ff5196952f444939ef14508d7f371f1affd63bf7340c466ec0fbae7d36334

  • SSDEEP

    49152:7QzHt472DmJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtItIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b

    • Size

      2.0MB

    • MD5

      e0a64ce738c511638a9daaf1c9049475

    • SHA1

      30c3234419fcd5489ef6a6eb2310ed1441de9c44

    • SHA256

      98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b

    • SHA512

      4970812501ea327631f5930005c918bd464bc0d40d953db92065826287d2afaad82ff5196952f444939ef14508d7f371f1affd63bf7340c466ec0fbae7d36334

    • SSDEEP

      49152:7QzHt472DmJtTF+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