Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-04-2024 10:16

General

  • Target

    f347051180559aa6ecaab96f4d1c94cd_JaffaCakes118.exe

  • Size

    663KB

  • MD5

    f347051180559aa6ecaab96f4d1c94cd

  • SHA1

    dd5c5e32e585f5536e76784c7d5f8fa73e55f33a

  • SHA256

    107b9c46e78bb8a802029dd715bee34ca3fa31e1bae428d7e149dd10e8f38e3a

  • SHA512

    cc019aa0769463a492089fb209672b222ff2c8aacec6672938979013f22b03e86765f1509f7ba28c6cc3dec51e19c2bae3573f4171e0b7d431a171dd2e42b241

  • SSDEEP

    12288:kcuhZ45W60V6ttoK+ouEm1/QxeCOEuOcq1/rNumqWG5/21EB/Q:kRhX6tFhuEG/QTOEuuNIWouixQ

Malware Config

Extracted

Family

darkcomet

Botnet

Windows

C2

baygoog.duckdns.org:1024

Mutex

DC_MUTEX-AVCEZSX

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    ZrKtz3mldrvg

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicrosoftUpdater

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 49 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f347051180559aa6ecaab96f4d1c94cd_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f347051180559aa6ecaab96f4d1c94cd_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4820
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\tz91ld2s.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2428
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESC9E.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCC8E.tmp"
        3⤵
          PID:3800
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
        2⤵
        • Modifies WinLogon for persistence
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4440
        • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
          3⤵
          • Executes dropped EXE
          PID:1428
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2400
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          3⤵
            PID:4992
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4040 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:2964

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\RESC9E.tmp

          Filesize

          1KB

          MD5

          efdfdfa116f2f0291e9bb3e4a5bfd3f1

          SHA1

          a0880ea9fcb4ce0266e91e2a2d8320bb57093667

          SHA256

          b61cc13416294e3aea07be9ae6315a96bff60365ad1b84414e381a5c692efa07

          SHA512

          77d3c1206d1139ef142d9c3d7bb269e4fe12685622897ae1c1622aef0a18a537b3cc28036864ab14336b0a5f9f6ff1ee3b87c2e70834c4107a089b4668cedf3e

        • C:\Users\Admin\AppData\Local\Temp\tz91ld2s.dll

          Filesize

          1.3MB

          MD5

          61c88755cb97e4104b17db6f2b962a6a

          SHA1

          ce2db5118748ec2b09aab465ff209d4332854a7d

          SHA256

          aef732ad105beb8d98f5c474aa1dd7ba85e887b310cb170d5df7317453e592d0

          SHA512

          6189f8515b274dfb4d811d1ba6407c76fc139aac0876976c75919cdd9b6fe38d5d99b12f0d530d7397eaa51bb5356e4fbad9573f764b36c1c05bd9b3406115e2

        • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

          Filesize

          1.1MB

          MD5

          d881de17aa8f2e2c08cbb7b265f928f9

          SHA1

          08936aebc87decf0af6e8eada191062b5e65ac2a

          SHA256

          b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

          SHA512

          5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

        • \??\c:\Users\Admin\AppData\Local\Temp\CSCC8E.tmp

          Filesize

          652B

          MD5

          a9707076eca1612fd15f4d0c5be08459

          SHA1

          0176c29718184a72c9c7f204d230582a87a9124f

          SHA256

          04562f826b0e53357913ac3bc31bf19d6b764175ae29549228cf1386b8e4d7ca

          SHA512

          f9219479ec2bd80552ce232d582b66cd18e5237e497c1843c88dbfbb9feff437c07c8e804c6ecf957a8df068744858a3e3bbc69b0e293f8c98ac5d18631caaf1

        • \??\c:\Users\Admin\AppData\Local\Temp\tmp6F0.tmp.txt

          Filesize

          648KB

          MD5

          f60faae124c353a55b1386bf79787f59

          SHA1

          f68ce59b973bd6dd6a6c79be1064549cc479a76d

          SHA256

          3714859cb4b651148db812400924c6feb2b7523759e6771d90175ea8b210471a

          SHA512

          b82ce427887271986fcd52b02e29bbeb9f108439d39aef6b65dd21a09743e672a49961922d957550163cb1350e92e6c479f1e030fd0fcb8f4a6088371497a30c

        • \??\c:\Users\Admin\AppData\Local\Temp\tz91ld2s.cmdline

          Filesize

          195B

          MD5

          aaa465e28dbeefb05c04a5958be3c4ff

          SHA1

          928255895a383cdcf1a7a98b383a69825f1deaa5

          SHA256

          a414c4cfe75c474faf2c220c0d99f2bd43a2551ac529f0060b1fa14f6604116c

          SHA512

          1a1e58b5f29ed3e6b6b5df0eea8261c891e5a3cb98e7f550b2f4ad79bf027b9842db68b6244bc20353b60f16836d85d930c70920e46c65b035582222bb3161da

        • memory/2400-76-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-77-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-94-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-93-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-90-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-89-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-88-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-87-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-84-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-83-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-82-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-81-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-78-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-75-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-72-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-58-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-71-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-60-0x0000000000780000-0x0000000000781000-memory.dmp

          Filesize

          4KB

        • memory/2400-61-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-62-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-70-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-64-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-65-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-66-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-67-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2400-69-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/2428-11-0x0000000000C10000-0x0000000000C20000-memory.dmp

          Filesize

          64KB

        • memory/4440-24-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/4440-31-0x00000000022C0000-0x00000000022C1000-memory.dmp

          Filesize

          4KB

        • memory/4440-45-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/4440-20-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/4440-28-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/4440-21-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/4440-22-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/4440-30-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/4440-27-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/4440-26-0x0000000000400000-0x00000000004B2000-memory.dmp

          Filesize

          712KB

        • memory/4820-59-0x0000000001710000-0x0000000001720000-memory.dmp

          Filesize

          64KB

        • memory/4820-47-0x0000000074FF0000-0x00000000755A1000-memory.dmp

          Filesize

          5.7MB

        • memory/4820-1-0x0000000074FF0000-0x00000000755A1000-memory.dmp

          Filesize

          5.7MB

        • memory/4820-0-0x0000000074FF0000-0x00000000755A1000-memory.dmp

          Filesize

          5.7MB

        • memory/4820-2-0x0000000001710000-0x0000000001720000-memory.dmp

          Filesize

          64KB

        • memory/4992-63-0x00000000012E0000-0x00000000012E1000-memory.dmp

          Filesize

          4KB