General

  • Target

    91f05bbd2f4f01adaf7f6954c53aed03b2e608138db2004f18c0e1a9368d6a1b

  • Size

    2.5MB

  • Sample

    240607-1lebgseb68

  • MD5

    5efb7ce4b13913b2af4df12d1d63ad86

  • SHA1

    c1079d2cf724f0de4fedf13840d6b89340b703f2

  • SHA256

    91f05bbd2f4f01adaf7f6954c53aed03b2e608138db2004f18c0e1a9368d6a1b

  • SHA512

    36a5bd18d8f50beca7b2d42fb2cdd67855b3903f8ff32ccc4f2e517475899c80152de00afcff3e556918f52678384f0c0080717fa24af931e4f61ab5c92f123e

  • SSDEEP

    49152:Zcm4081qpZBUbHEmJWsEAQACR07Q3byRD8aXY658:ZcmmqvBUbHtUfAw07QLyLn

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354

Attributes
  • user_agent

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

Targets

    • Target

      91f05bbd2f4f01adaf7f6954c53aed03b2e608138db2004f18c0e1a9368d6a1b

    • Size

      2.5MB

    • MD5

      5efb7ce4b13913b2af4df12d1d63ad86

    • SHA1

      c1079d2cf724f0de4fedf13840d6b89340b703f2

    • SHA256

      91f05bbd2f4f01adaf7f6954c53aed03b2e608138db2004f18c0e1a9368d6a1b

    • SHA512

      36a5bd18d8f50beca7b2d42fb2cdd67855b3903f8ff32ccc4f2e517475899c80152de00afcff3e556918f52678384f0c0080717fa24af931e4f61ab5c92f123e

    • SSDEEP

      49152:Zcm4081qpZBUbHEmJWsEAQACR07Q3byRD8aXY658:ZcmmqvBUbHtUfAw07QLyLn

    • 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 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