General

  • Target

    1eda8bb6918fa03d2c4a8a0a8b3dcdc103529a2584e72a794764db21dd579fcc

  • Size

    2.0MB

  • Sample

    240522-24tdssce75

  • MD5

    ad83c901293c414734bd92cd47babe3a

  • SHA1

    89165208134c4bbe9fb2ccf4bd7f5af316f2a19c

  • SHA256

    1eda8bb6918fa03d2c4a8a0a8b3dcdc103529a2584e72a794764db21dd579fcc

  • SHA512

    5c41b6210999a1bb451c614ced3e00f83798f5a1d937f82cef46f52057779ef30f91f8c667ff9dd24966f1073db9ee45eca2745579b399cd8be05d47d6d27439

  • SSDEEP

    49152:7QzHt472DtJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt7tIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      1eda8bb6918fa03d2c4a8a0a8b3dcdc103529a2584e72a794764db21dd579fcc

    • Size

      2.0MB

    • MD5

      ad83c901293c414734bd92cd47babe3a

    • SHA1

      89165208134c4bbe9fb2ccf4bd7f5af316f2a19c

    • SHA256

      1eda8bb6918fa03d2c4a8a0a8b3dcdc103529a2584e72a794764db21dd579fcc

    • SHA512

      5c41b6210999a1bb451c614ced3e00f83798f5a1d937f82cef46f52057779ef30f91f8c667ff9dd24966f1073db9ee45eca2745579b399cd8be05d47d6d27439

    • SSDEEP

      49152:7QzHt472DtJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt7tIuoITsdZ

    • 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