General

  • Target

    8380c34064009ad4dbae47b7f7b8ebbca3d03d949afddc3d5b91b5eee79d1ae4

  • Size

    2.0MB

  • Sample

    240526-28k8zsge96

  • MD5

    4517bbea31cf57c66a1292d17968d4fa

  • SHA1

    e24bee8a67e0c8bfc16cb54ea2894f38143b3e57

  • SHA256

    8380c34064009ad4dbae47b7f7b8ebbca3d03d949afddc3d5b91b5eee79d1ae4

  • SHA512

    f3e25d6df7c5a485c2d9579158c821b216f0ee6878332122e1eaf536f390b95738fcd64481da817bd77da40f5070ad08a9e43ee06013da3aaddff87a5f22f442

  • SSDEEP

    49152:OePpQE9JtTF+TxMoxc1TU+j+dAzGwlrh:OePpQE9tIuoITsdZ

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

      8380c34064009ad4dbae47b7f7b8ebbca3d03d949afddc3d5b91b5eee79d1ae4

    • Size

      2.0MB

    • MD5

      4517bbea31cf57c66a1292d17968d4fa

    • SHA1

      e24bee8a67e0c8bfc16cb54ea2894f38143b3e57

    • SHA256

      8380c34064009ad4dbae47b7f7b8ebbca3d03d949afddc3d5b91b5eee79d1ae4

    • SHA512

      f3e25d6df7c5a485c2d9579158c821b216f0ee6878332122e1eaf536f390b95738fcd64481da817bd77da40f5070ad08a9e43ee06013da3aaddff87a5f22f442

    • SSDEEP

      49152:OePpQE9JtTF+TxMoxc1TU+j+dAzGwlrh:OePpQE9tIuoITsdZ

    • 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