General

  • Target

    b44edfdc0660c3f0ab88c4e2b5bfecd8bf2907875fefba75e88bd702b9fa8123

  • Size

    2.0MB

  • Sample

    240526-bvv8xshh5w

  • MD5

    da39ad4f3a4d202c3325d61b04305671

  • SHA1

    921abe6a63218f0b15262210b537904ad5f143f7

  • SHA256

    b44edfdc0660c3f0ab88c4e2b5bfecd8bf2907875fefba75e88bd702b9fa8123

  • SHA512

    97e375addbe27f7dae54de7aa7f9b69c0988a0fe6a09c8fb0dddc2a10425a69475d0aed2b2c0b6d926c5a44a544d438bcc1e441cff4d46ae5f5055d0e8352c30

  • SSDEEP

    49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ

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

      b44edfdc0660c3f0ab88c4e2b5bfecd8bf2907875fefba75e88bd702b9fa8123

    • Size

      2.0MB

    • MD5

      da39ad4f3a4d202c3325d61b04305671

    • SHA1

      921abe6a63218f0b15262210b537904ad5f143f7

    • SHA256

      b44edfdc0660c3f0ab88c4e2b5bfecd8bf2907875fefba75e88bd702b9fa8123

    • SHA512

      97e375addbe27f7dae54de7aa7f9b69c0988a0fe6a09c8fb0dddc2a10425a69475d0aed2b2c0b6d926c5a44a544d438bcc1e441cff4d46ae5f5055d0e8352c30

    • SSDEEP

      49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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