Analysis

  • max time kernel
    150s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/09/2024, 13:48

General

  • Target
    file.exe
  • Size 403KB
  • Sample240924-q34mla1arb
  • SHA256 b5bb760b32b6cba8aae36d830b64c53cd3aa0d8ae0ec5686d604564f30ec46b9
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

Version
  • 11

Botnet
  • d80be45a1eb6454ca916f92c36ebf67d

C2
  • https://steamcommunity.com/profiles/76561199780418869

  • https://t.me/ae5ed

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Extracted

Family
  • lumma

C2
  • https://ghostreedmnu.shop/api

Signatures

  • Detect Vidar Stealer 13 IoCs
  • Lumma Stealer, LummaC

    Lumma or LummaC is an infostealer written in C++ first seen in August 2022.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 64 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 64 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1308
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:3000
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        2⤵
          PID:4356
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          2⤵
          • Checks computer location settings
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1188
          • C:\ProgramData\FHJDGHIJDG.exe
            "C:\ProgramData\FHJDGHIJDG.exe"
            3⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:3132
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              4⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:3288
          • C:\ProgramData\CBAKJKJJJE.exe
            "C:\ProgramData\CBAKJKJJJE.exe"
            3⤵
            • Checks computer location settings
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:5116
            • C:\Users\Admin\AppData\Local\Temp\Software\IDSM.exe
              "C:\Users\Admin\AppData\Local\Temp\Software\IDSM.exe"
              4⤵
              • Checks computer location settings
              • Drops startup file
              • Executes dropped EXE
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:5056
              • C:\Users\Admin\AppData\Local\Temp\Software\MSDNG.exe
                "C:\Users\Admin\AppData\Local\Temp\Software\MSDNG.exe" --checker
                5⤵
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:2656
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\HJDBFBKKJDHJ" & exit
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:5108
            • C:\Windows\SysWOW64\timeout.exe
              timeout /t 10
              4⤵
              • System Location Discovery: System Language Discovery
              • Delays execution with timeout.exe
              PID:1452

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            CBAKJKJJJE.exe

            • Path C:\ProgramData\CBAKJKJJJE.exe
            • Size 25KB
            • SHA256 1f8acba1d796a9ebaed193ece097f9e82c09f596ab79bd66362c5cda736df3d1
            • MD5 SHA1 SHA512 SSDEEP

            FHJDGHIJDG.exe

            • Path C:\ProgramData\FHJDGHIJDG.exe
            • Size 375KB
            • SHA256 c7995bd4c494c80060f42ee5b8519bfdbed13e047751e924aabc3710e412bc6d
            • MD5 SHA1 SHA512 SSDEEP

            mozglue.dll

            • Path C:\ProgramData\mozglue.dll
            • Size 593KB
            • SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
            • MD5 SHA1 SHA512 SSDEEP

            nss3.dll

            • Path C:\ProgramData\nss3.dll
            • Size 2.0MB
            • SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
            • MD5 SHA1 SHA512 SSDEEP

            IDSM_7eae7e4b4e5341da814cc2d6917b0d04.lnk

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IDSM_7eae7e4b4e5341da814cc2d6917b0d04.lnk
            • Size 1KB
            • SHA256 75a02368f169b9ed072605f469b7ae7d05254686ee80f5ad544bb5590e37f3e2
            • MD5 SHA1 SHA512

            memory/1188-19-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-86-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-3-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-20-0x00000000224E0000-0x000000002273F000-memory.dmp

            memory/1188-35-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-36-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-52-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-53-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-87-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-7-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-9-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-78-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-79-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1188-18-0x0000000000400000-0x0000000000676000-memory.dmp

            memory/1308-60-0x0000000074C40000-0x00000000753F0000-memory.dmp

            memory/1308-5-0x0000000074C40000-0x00000000753F0000-memory.dmp

            memory/1308-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

            memory/1308-1-0x00000000006A0000-0x0000000000708000-memory.dmp

            memory/3132-105-0x0000000000050000-0x00000000000B2000-memory.dmp

            memory/3132-104-0x000000007252E000-0x000000007252F000-memory.dmp

            memory/3288-142-0x0000000000400000-0x0000000000465000-memory.dmp

            memory/3288-151-0x0000000000400000-0x0000000000465000-memory.dmp

            memory/3288-149-0x0000000000400000-0x0000000000465000-memory.dmp

            memory/5116-119-0x00000000007A0000-0x00000000007AC000-memory.dmp

            memory/5116-120-0x0000000002BD0000-0x0000000002BDC000-memory.dmp