General

  • Target

    6788f9d24708c77f9911e34ea6e8e226c1220b5ea11a112a3fe8c1a58ffa6a70

  • Size

    2.0MB

  • Sample

    240524-31l1zsfh49

  • MD5

    fa51099ac0a93fa5466bfc001997868f

  • SHA1

    eb74dad1d41b4fce18dad69602aca2ad14bb162b

  • SHA256

    6788f9d24708c77f9911e34ea6e8e226c1220b5ea11a112a3fe8c1a58ffa6a70

  • SHA512

    0dea335410d79f98b7829fdff6561faddf2f35f1b1971682e57a8e5cd9662c820c1971fdd86066b5e6116b70c2c928406df6c094bf793406419f5b486e71bbb2

  • SSDEEP

    49152:s4K3x1vUWJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18WtIuoITsdZ

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

      6788f9d24708c77f9911e34ea6e8e226c1220b5ea11a112a3fe8c1a58ffa6a70

    • Size

      2.0MB

    • MD5

      fa51099ac0a93fa5466bfc001997868f

    • SHA1

      eb74dad1d41b4fce18dad69602aca2ad14bb162b

    • SHA256

      6788f9d24708c77f9911e34ea6e8e226c1220b5ea11a112a3fe8c1a58ffa6a70

    • SHA512

      0dea335410d79f98b7829fdff6561faddf2f35f1b1971682e57a8e5cd9662c820c1971fdd86066b5e6116b70c2c928406df6c094bf793406419f5b486e71bbb2

    • SSDEEP

      49152:s4K3x1vUWJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18WtIuoITsdZ

    • 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