General

  • Target

    66e4160e6d8b3c2af6d492e95638a02a72351df558308ea83b311d5feec5ee01

  • Size

    2.0MB

  • Sample

    240526-169ccseh85

  • MD5

    ad716cd2088959ef473fe009e68d949e

  • SHA1

    de44ad80599589a16ff881208e99a185c9fbcd91

  • SHA256

    66e4160e6d8b3c2af6d492e95638a02a72351df558308ea83b311d5feec5ee01

  • SHA512

    1b0d22f9901af05fc6a8e78d8b9d2090a4107fb164137480e5a601c7c954cf393be4fb0614b4a40202d68ee5643f646a1e14ed2decb74a843fa0ce53cd1becc2

  • SSDEEP

    49152:OePpQEZJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEZtIuoITsdZ

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

      66e4160e6d8b3c2af6d492e95638a02a72351df558308ea83b311d5feec5ee01

    • Size

      2.0MB

    • MD5

      ad716cd2088959ef473fe009e68d949e

    • SHA1

      de44ad80599589a16ff881208e99a185c9fbcd91

    • SHA256

      66e4160e6d8b3c2af6d492e95638a02a72351df558308ea83b311d5feec5ee01

    • SHA512

      1b0d22f9901af05fc6a8e78d8b9d2090a4107fb164137480e5a601c7c954cf393be4fb0614b4a40202d68ee5643f646a1e14ed2decb74a843fa0ce53cd1becc2

    • SSDEEP

      49152:OePpQEZJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEZtIuoITsdZ

    • 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