General

  • Target

    abed71d9d57551e20d1a3a1d5646940411c9d06b52e4dbfa66478db903544bec

  • Size

    2.0MB

  • Sample

    240526-2cr2nafc56

  • MD5

    5deb4442ae617600891949163bb52f0a

  • SHA1

    8935e2c43020d691d195890d415f56c4f22c6355

  • SHA256

    abed71d9d57551e20d1a3a1d5646940411c9d06b52e4dbfa66478db903544bec

  • SHA512

    a4933bc6802ee123bdfd64344ba3782d1db49370222b03722a5c389ecfb3d264c30a64442e3227de128b761bd168ff5e85d6813b561b37acc2146aef0d103ee4

  • SSDEEP

    49152:OePpQElJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEltIuoITsdZ

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

      abed71d9d57551e20d1a3a1d5646940411c9d06b52e4dbfa66478db903544bec

    • Size

      2.0MB

    • MD5

      5deb4442ae617600891949163bb52f0a

    • SHA1

      8935e2c43020d691d195890d415f56c4f22c6355

    • SHA256

      abed71d9d57551e20d1a3a1d5646940411c9d06b52e4dbfa66478db903544bec

    • SHA512

      a4933bc6802ee123bdfd64344ba3782d1db49370222b03722a5c389ecfb3d264c30a64442e3227de128b761bd168ff5e85d6813b561b37acc2146aef0d103ee4

    • SSDEEP

      49152:OePpQElJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEltIuoITsdZ

    • 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 Enterprise v15

Tasks