General

  • Target

    82db67eac4012e670a2e4f30e4b0f51537052461db9038bd628305126aa119cc

  • Size

    2.0MB

  • Sample

    240525-aex7xaga98

  • MD5

    48be8a05bfb1c60ef74068f394927c74

  • SHA1

    9eb58d95722e42e76a415915d6846e100892198e

  • SHA256

    82db67eac4012e670a2e4f30e4b0f51537052461db9038bd628305126aa119cc

  • SHA512

    eb28aae8d6b3512fb13e9def6cc6a100b80cb34e4123390ee0596108fefa49db40052c722e6464152bc5c869a6497c19f2fac49faf8a9cf5620233699a4c1fd3

  • SSDEEP

    49152:s4K3x1vU2JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex182tIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Targets

    • Target

      82db67eac4012e670a2e4f30e4b0f51537052461db9038bd628305126aa119cc

    • Size

      2.0MB

    • MD5

      48be8a05bfb1c60ef74068f394927c74

    • SHA1

      9eb58d95722e42e76a415915d6846e100892198e

    • SHA256

      82db67eac4012e670a2e4f30e4b0f51537052461db9038bd628305126aa119cc

    • SHA512

      eb28aae8d6b3512fb13e9def6cc6a100b80cb34e4123390ee0596108fefa49db40052c722e6464152bc5c869a6497c19f2fac49faf8a9cf5620233699a4c1fd3

    • SSDEEP

      49152:s4K3x1vU2JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex182tIuoITsdZ

    • 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