Analysis

  • max time kernel
    26s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-09-2024 15:04

General

  • Target

    file.exe

  • Size

    403KB

  • MD5

    c7f95fc671d7bf1bec293e9500577bcf

  • SHA1

    5366030099354e76ab5f8b8df4b2e226a29679ef

  • SHA256

    d1bd0c0a32f154e4a9c6eca1eafee762ccea17a390706025b63e657f0305f432

  • SHA512

    82b932b03c091cf27c4671ae2bf14a35b4c9a80d0eca01204cc67b85ff215468d2de2db6f2950df9a86c165fbbe2156bb5314e8fcf841b7439badfa122eec99f

  • SSDEEP

    12288:OpY+s+t6FNRj4nNZSojxNHtbU3ZanTYYGea84Km7ZsjnxEO:sD6FNl8rjntQ3I8YGbnKm7Zat

Malware Config

Extracted

Family

vidar

Version

11

Botnet

3a15237aa92dcd8ccca447211fb5fc2a

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://drawzhotdog.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 1 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 7 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 34 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:492
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:1692
      • 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:1064
        • C:\ProgramData\CFIEGDAEHI.exe
          "C:\ProgramData\CFIEGDAEHI.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4512
          • C:\Users\Admin\AppData\Local\Temp\Malewmf\MFDBG.exe
            "C:\Users\Admin\AppData\Local\Temp\Malewmf\MFDBG.exe"
            4⤵
            • Checks computer location settings
            • Drops startup file
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1280
            • C:\Users\Admin\AppData\Local\Temp\Malewmf\FDWDZ.exe
              "C:\Users\Admin\AppData\Local\Temp\Malewmf\FDWDZ.exe" --checker
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              PID:4708
        • C:\ProgramData\IEGCAAKFBA.exe
          "C:\ProgramData\IEGCAAKFBA.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2832
          • 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
            PID:1324
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\IEGCAAKFBAEG" & exit
          3⤵
            PID:3952
            • C:\Windows\SysWOW64\timeout.exe
              timeout /t 10
              4⤵
              • Delays execution with timeout.exe
              PID:796

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\ProgramData\CFIEGDAEHI.exe

        Filesize

        25KB

        MD5

        168087c84c5ff3664e5e2f4eec18d7dd

        SHA1

        639e9e87103f576617ed08c50910ca92fe5c8c5b

        SHA256

        2a7cdb79045658b9c02ebbb159e5b3680d7d6d832dbd757572f7d202c3fa935d

        SHA512

        89491261e1234f917964566def4b1a50505ba4c2eb90d14c19e2130d78fe65cd61c4bba685909109c7088b35e7fd48f6311ace7a0dd8c703a6d1b1d23d1a54bb

      • C:\ProgramData\IEGCAAKFBA.exe

        Filesize

        368KB

        MD5

        0cee1d66332dec523210f62e479284b9

        SHA1

        33f950916e13a6ec654c52160ee47e88c64a5724

        SHA256

        0a6a258bfdb9b1947f2945b44e274ff3f06a7c5c733ff83c2a71c5f911fa9cc0

        SHA512

        603aa4834c6d3a9f3b6b1629eeb2108cecfd7192110f0cf948f2971957a9231ad9d405d8424e3a41b32a8ff415d8f84e55afdec38bf996703093084162d11972

      • C:\ProgramData\mozglue.dll

        Filesize

        593KB

        MD5

        c8fd9be83bc728cc04beffafc2907fe9

        SHA1

        95ab9f701e0024cedfbd312bcfe4e726744c4f2e

        SHA256

        ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

        SHA512

        fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

      • C:\ProgramData\nss3.dll

        Filesize

        2.0MB

        MD5

        1cc453cdf74f31e4d913ff9c10acdde2

        SHA1

        6e85eae544d6e965f15fa5c39700fa7202f3aafe

        SHA256

        ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

        SHA512

        dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MFDBG_1d87fb1304a0477897ef2e852c641d01.lnk

        Filesize

        1KB

        MD5

        4b55b23a3ac45b3c3648a4b7e2dc37d9

        SHA1

        2eea7692830cf8d664f1a5945519fd7c32227900

        SHA256

        0ac05127e3181e517904e6992d8466202ca2123e0e84b9d7e6542504dd5ec693

        SHA512

        144b91c0d4b452e12814d1bbb23f710469834264413d5139e7ce539803551cfc6220eb1f5921846fcd693baefa7757afc5a1169f357b71fc13967ef6992bd285

      • memory/492-60-0x00000000752E0000-0x0000000075A90000-memory.dmp

        Filesize

        7.7MB

      • memory/492-1-0x0000000000D00000-0x0000000000D68000-memory.dmp

        Filesize

        416KB

      • memory/492-11-0x00000000752E0000-0x0000000075A90000-memory.dmp

        Filesize

        7.7MB

      • memory/492-0-0x00000000752EE000-0x00000000752EF000-memory.dmp

        Filesize

        4KB

      • memory/1064-19-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-7-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-52-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-53-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-35-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-21-0x0000000022700000-0x000000002295F000-memory.dmp

        Filesize

        2.4MB

      • memory/1064-18-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-78-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-79-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-86-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-87-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-36-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-3-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1064-8-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/1324-289-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1324-287-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/1324-285-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2832-146-0x0000000000EB0000-0x0000000000F10000-memory.dmp

        Filesize

        384KB

      • memory/4512-105-0x0000000072BC0000-0x0000000073370000-memory.dmp

        Filesize

        7.7MB

      • memory/4512-122-0x0000000072BC0000-0x0000000073370000-memory.dmp

        Filesize

        7.7MB

      • memory/4512-101-0x0000000000FD0000-0x0000000000FDC000-memory.dmp

        Filesize

        48KB

      • memory/4512-102-0x0000000072BCE000-0x0000000072BCF000-memory.dmp

        Filesize

        4KB