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General

  • Target

    d38a9f6ac940fd239ba8bfc7f979d1abf5e7a0b0e2420d077d5daa2a40919a67

  • Size

    1.8MB

  • Sample

    240606-hf8zssaf9w

  • MD5

    8df7549f7fd2f933c2cdf8b8bbda162b

  • SHA1

    b3b2c29447b00ed84b14a7aad604632543232208

  • SHA256

    d38a9f6ac940fd239ba8bfc7f979d1abf5e7a0b0e2420d077d5daa2a40919a67

  • SHA512

    2060b259c95264f205cd30bf4af94b77f7966df144e1f600f65df5afffd807816ba02f8c35663703e70309ed3279461b6ce216b42fe76142b7639e421f8fccec

  • SSDEEP

    49152:k75B7FDFXb9Ya8aesY3Ot4N7G/IeUAtK:k75RFD/n0etD/INAt

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

      d38a9f6ac940fd239ba8bfc7f979d1abf5e7a0b0e2420d077d5daa2a40919a67

    • Size

      1.8MB

    • MD5

      8df7549f7fd2f933c2cdf8b8bbda162b

    • SHA1

      b3b2c29447b00ed84b14a7aad604632543232208

    • SHA256

      d38a9f6ac940fd239ba8bfc7f979d1abf5e7a0b0e2420d077d5daa2a40919a67

    • SHA512

      2060b259c95264f205cd30bf4af94b77f7966df144e1f600f65df5afffd807816ba02f8c35663703e70309ed3279461b6ce216b42fe76142b7639e421f8fccec

    • SSDEEP

      49152:k75B7FDFXb9Ya8aesY3Ot4N7G/IeUAtK:k75RFD/n0etD/INAt

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Detect binaries embedding considerable number of MFA browser extension IDs.

    • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • Detects executables containing potential Windows Defender anti-emulation checks

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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