Analysis

  • max time kernel
    141s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/07/2024, 01:05

General

  • Target
    416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b.exe
  • Size 4.4MB
  • Sample240701-bf16mavckj
  • SHA256 416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

C2
  • https://t.me/g067n

  • https://steamcommunity.com/profiles/76561199707802586

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Extracted

Family
  • lumma

C2
  • https://potterryisiw.shop/api

  • https://foodypannyjsud.shop/api

  • https://contintnetksows.shop/api

  • https://reinforcedirectorywd.shop/api

Signatures

  • Detect Vidar Stealer 5 IoCs
  • Lumma Stealer

    An infostealer written in C++ first seen in August 2022.

  • 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. 2 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 2 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 5 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 2 IoCs
  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b.exe
    "C:\Users\Admin\AppData\Local\Temp\416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:428
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1040
      • C:\ProgramData\EGDGCGCFHI.exe
        "C:\ProgramData\EGDGCGCFHI.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2208
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
            PID:4336
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2208 -s 272
            4⤵
            • Program crash
            PID:2248
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\EGHJKFHJJJKJ" & exit
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:412
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 10
            4⤵
            • Delays execution with timeout.exe
            PID:344
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2208 -ip 2208
      1⤵
        PID:3840

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            EGDGCGCFHI.exe

            • Path C:\ProgramData\EGDGCGCFHI.exe
            • Size 516KB
            • SHA256 07c09ba5a84f619e5b83a54298ffc58d20b00f14399c7a94b7f02b70efc60f35
            • MD5 SHA1 SHA512 SSDEEP

            memory/428-38-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-42-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-3-0x00000000055E0000-0x00000000055EA000-memory.dmp

            memory/428-4-0x0000000074780000-0x0000000074F30000-memory.dmp

            memory/428-5-0x00000000057F0000-0x00000000058FC000-memory.dmp

            memory/428-6-0x0000000005690000-0x00000000056AC000-memory.dmp

            memory/428-18-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-20-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-66-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-34-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-0-0x000000007478E000-0x000000007478F000-memory.dmp

            memory/428-71-0x0000000074780000-0x0000000074F30000-memory.dmp

            memory/428-40-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-62-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-58-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-56-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-54-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-51-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-48-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-46-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-44-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-1-0x0000000000820000-0x0000000000C82000-memory.dmp

            memory/428-2-0x00000000056F0000-0x000000000578C000-memory.dmp

            memory/428-151-0x0000000074780000-0x0000000074F30000-memory.dmp

            memory/428-64-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-32-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-30-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-28-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-24-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-22-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-12-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-10-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-8-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-60-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-52-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-37-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-26-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-17-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-14-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-7-0x0000000005690000-0x00000000056A5000-memory.dmp

            memory/428-72-0x0000000074780000-0x0000000074F30000-memory.dmp

            memory/1040-67-0x0000000000400000-0x0000000000648000-memory.dmp

            memory/1040-85-0x0000000000400000-0x0000000000648000-memory.dmp

            memory/1040-73-0x0000000000400000-0x0000000000648000-memory.dmp

            memory/1040-150-0x0000000000400000-0x0000000000648000-memory.dmp

            memory/1040-69-0x0000000000400000-0x0000000000648000-memory.dmp

            memory/2208-143-0x00000000009C0000-0x00000000009C1000-memory.dmp

            memory/4336-147-0x0000000000400000-0x000000000045A000-memory.dmp