General

  • Target
    15b2fa0131427a7fbffe42ce83f36357661772faa0381e6ab8ef21a81c6380aa.zip
  • Size 2.9MB
  • Sample240624-bd5q2avgrj
  • SHA256 15b2fa0131427a7fbffe42ce83f36357661772faa0381e6ab8ef21a81c6380aa
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

rc4.plain

Extracted

Family
  • vidar

Version
  • 10.1

Botnet
  • 89083e6d7cd1c8c460b86fe6e70bf17b

C2
  • https://guillerme.xyz/

  • https://t.me/memve4erin

  • https://steamcommunity.com/profiles/76561199699680841

Attributes
  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:127.0) Gecko/20100101 Firefox/127.0

Targets

    • Target
      IMHttpComm.dll
    • Size 32KB
    • SHA256 96d6264b26decf6595ca6f0584a1b60589ec5dacdf03ddf5fbb6104a6afc9e7a
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      ImLookExU.dll
    • Size 262KB
    • SHA256 0e469f31a8399483862231a0fe5b78bf90a7df4ac5c0470ae79adc33e4a42d10
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      ImLookU.dll
    • Size 606KB
    • SHA256 a6766c524497144d585efa4fe384b516b563203427003508f7c8f6bffa7c928d
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      ImNtUtilU.dll
    • Size 94KB
    • SHA256 a8e1b0e676dce9556037d29fd96521ec814858404ba4cfdd0db0edbe22c87bc7
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      ImPackr.exe
    • Size 102KB
    • SHA256 689951b03517f77b6c04bb57f604f50736dc1a86b87253b0dee73722d4520a11
    • MD5 SHA1 SHA512 SSDEEP
    • 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 SQL queries to confidential data stores. Observed in infostealers

    • Detects executables containing potential Windows Defender anti-emulation checks

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Suspicious use of SetThreadContext

    • Target
      ImUtilsU.dll
    • Size 1.4MB
    • SHA256 914b1e53451b8be2c362d62514f28bdef46a133535d959b13f3f4bf3bc63df3a
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      ImWrappU.dll
    • Size 158KB
    • SHA256 7187903a9e4078f4d31f4b709a59d24eb6b417ea289f4f28eabce1ea2e713dce
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      SftTree_IX86_U_60.dll
    • Size 570KB
    • SHA256 24f2399fc83198ab8d63ee6a1ad6ffbd1eda4d38048d3e809fecd2a3e0709671
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      mfc80u.dll
    • Size 1.0MB
    • SHA256 18be5d3c656236b7e3cd6d619d62496fe3e7f66bf2859e460f8ac3d1a6bdaa9a
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      msvcp80.dll
    • Size 536KB
    • SHA256 2026f3c4f830dff6883b88e2647272a52a132f25eb42c0d423e36b3f65a94d08
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      msvcr80.dll
    • Size 612KB
    • SHA256 02bdde38e4c6bd795a092d496b8d6060cdbe71e22ef4d7a204e3050c1be44fa9
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      wlessfp1.dll
    • Size 70KB
    • SHA256 fbd4b6011d3d1c2af22827ca548ba19669eef31173d496e75f064ef7a884431c
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10

MITRE ATT&CK Enterprise v15

Tasks