General

  • Target

    edc4f869b3d466c6f718745fa6d6e86529b7d176b8a7cd88859ba4d3bc9fe832

  • Size

    2.0MB

  • Sample

    240522-3a3wtach42

  • MD5

    57c1791cb7f4122d49e55d4975da28e8

  • SHA1

    99595e5899573b3f6ef7f1fbbba8be702d8e2c25

  • SHA256

    edc4f869b3d466c6f718745fa6d6e86529b7d176b8a7cd88859ba4d3bc9fe832

  • SHA512

    20edca088213dd5b4c7200fc990999d952998130a173a57cb3e417e5c36bb6a9e9f9802eba0984118d00e4f2ec873f6852b97a1add4edc93e96f198082918843

  • SSDEEP

    49152:7QzHt472D5JtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtHtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      edc4f869b3d466c6f718745fa6d6e86529b7d176b8a7cd88859ba4d3bc9fe832

    • Size

      2.0MB

    • MD5

      57c1791cb7f4122d49e55d4975da28e8

    • SHA1

      99595e5899573b3f6ef7f1fbbba8be702d8e2c25

    • SHA256

      edc4f869b3d466c6f718745fa6d6e86529b7d176b8a7cd88859ba4d3bc9fe832

    • SHA512

      20edca088213dd5b4c7200fc990999d952998130a173a57cb3e417e5c36bb6a9e9f9802eba0984118d00e4f2ec873f6852b97a1add4edc93e96f198082918843

    • SSDEEP

      49152:7QzHt472D5JtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtHtIuoITsdZ

    • 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