General

  • Target

    5c8546bb45bca8780582a8ce02ce31b93a792bb418a70051353b3d1916bda221

  • Size

    2.0MB

  • Sample

    240522-3gx9xadc22

  • MD5

    663d4702d24d812e92bc3a23f3c3c70b

  • SHA1

    8ce3501c96f1acf2ea56f3768c810b56f935f860

  • SHA256

    5c8546bb45bca8780582a8ce02ce31b93a792bb418a70051353b3d1916bda221

  • SHA512

    eab0e5146bed0c06c44ae0e6311b584a363593769394bf57ea9fed3daa8fc05569b481445ed60d0dff7a7ea2d434d6d3970e68b73ba53e52e79fca615669d548

  • SSDEEP

    49152:7QzHt472DWJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt4tIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      5c8546bb45bca8780582a8ce02ce31b93a792bb418a70051353b3d1916bda221

    • Size

      2.0MB

    • MD5

      663d4702d24d812e92bc3a23f3c3c70b

    • SHA1

      8ce3501c96f1acf2ea56f3768c810b56f935f860

    • SHA256

      5c8546bb45bca8780582a8ce02ce31b93a792bb418a70051353b3d1916bda221

    • SHA512

      eab0e5146bed0c06c44ae0e6311b584a363593769394bf57ea9fed3daa8fc05569b481445ed60d0dff7a7ea2d434d6d3970e68b73ba53e52e79fca615669d548

    • SSDEEP

      49152:7QzHt472DWJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt4tIuoITsdZ

    • 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