Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-12-2024 12:14

General

  • Target

    fb7f296bec3cdc8ec079f808a7011fe4_JaffaCakes118.exe

  • Size

    631KB

  • MD5

    fb7f296bec3cdc8ec079f808a7011fe4

  • SHA1

    30aa9f4978ddf727e86e5c4b381cc61f568f34b9

  • SHA256

    b35e0f5a1b842a947ffd577ee4521e22612785bacf6dad81c803e7019156797e

  • SHA512

    cc08dd452f57957cbf00cf1f2975fdb39edd7edf84e080876ad192170a53ca4d1d6d7f7bc05e19c7629bb689830dda889ba84140e216f2586b8890043b505b59

  • SSDEEP

    12288:UK/xyYT2o0k3vSycsL4YAfY9vNiQNe+91BgHT9/o30i8fKtbc:+puv8QLeEfeh/o3n8Stb

Malware Config

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 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
  • Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 2 IoCs

    When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 10 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 8 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • NTFS ADS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 55 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fb7f296bec3cdc8ec079f808a7011fe4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\fb7f296bec3cdc8ec079f808a7011fe4_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1476
    • C:\Users\Admin\AppData\Local\Temp\fb7f296bec3cdc8ec079f808a7011fe4_JaffaCakes118.exe
      fb7f296bec3cdc8ec079f808a7011fe4_JaffaCakes118.exe
      2⤵
        PID:2648
      • C:\Users\Admin\AppData\Local\Temp\fb7f296bec3cdc8ec079f808a7011fe4_JaffaCakes118.exe
        fb7f296bec3cdc8ec079f808a7011fe4_JaffaCakes118.exe
        2⤵
        • Checks BIOS information in registry
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4508
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /noconfig @"C:\Users\Admin\AppData\Local\Temp\fvmzb6lj.cmdline"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3604
        • 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\RES856C.tmp" "C:\Users\Admin\AppData\Local\Temp\vbc2E33A98A4C774BA98153F2FECE8EF0FC.TMP"
          3⤵
          • System Location Discovery: System Language Discovery
          PID:5064
      • C:\Windows\SysWOW64\cmd.exe
        "cmd"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2964
      • C:\Windows\SysWOW64\cmd.exe
        "cmd"
        2⤵
        • Subvert Trust Controls: Mark-of-the-Web Bypass
        • System Location Discovery: System Language Discovery
        • NTFS ADS
        PID:324
      • C:\Windows\SysWOW64\cmd.exe
        "cmd"
        2⤵
        • Subvert Trust Controls: Mark-of-the-Web Bypass
        • System Location Discovery: System Language Discovery
        • NTFS ADS
        PID:4892
      • C:\Users\Admin\AppData\Local\Temp\Microsoft\Protect\Credentials\wmpnetvk.exe
        "C:\Users\Admin\AppData\Local\Temp\Microsoft\Protect\Credentials\wmpnetvk.exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2308
        • C:\Users\Admin\AppData\Local\Temp\Microsoft\Protect\Credentials\rundll.exe
          "C:\Users\Admin\AppData\Local\Temp\Microsoft\Protect\Credentials\rundll.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2092
          • C:\Users\Admin\AppData\Local\Temp\Microsoft\Protect\Credentials\rundll.exe
            rundll.exe
            4⤵
              PID:3244
            • C:\Users\Admin\AppData\Local\Temp\Microsoft\Protect\Credentials\rundll.exe
              rundll.exe
              4⤵
              • Checks BIOS information in registry
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Checks processor information in registry
              • Enumerates system info in registry
              • Suspicious use of AdjustPrivilegeToken
              PID:752

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\Microsoft\Protect\Credentials\wmpnetvk.exe

        Filesize

        7KB

        MD5

        e8ae231caeba7ca39abed45e93edf410

        SHA1

        98721ecfe929e612cf1686ed1e50696c471469e9

        SHA256

        c9d9c2e3303d296127dcf504afa35d6f8306e414614941e69f6bc9165bf2f36c

        SHA512

        63bbc225bca915dab6df54ebb7cb2348982229afd1d0a80823c85db4761776c5b73414c4c309b3fec584d68e23cadf673e952db66b0af59d7535ee570d1dfd51

      • C:\Users\Admin\AppData\Local\Temp\Microsoft\Protect\Credentials\xCocaine.txt

        Filesize

        631KB

        MD5

        fb7f296bec3cdc8ec079f808a7011fe4

        SHA1

        30aa9f4978ddf727e86e5c4b381cc61f568f34b9

        SHA256

        b35e0f5a1b842a947ffd577ee4521e22612785bacf6dad81c803e7019156797e

        SHA512

        cc08dd452f57957cbf00cf1f2975fdb39edd7edf84e080876ad192170a53ca4d1d6d7f7bc05e19c7629bb689830dda889ba84140e216f2586b8890043b505b59

      • C:\Users\Admin\AppData\Local\Temp\RES856C.tmp

        Filesize

        1KB

        MD5

        d927bfcc15b157dd70749d7d35ded90b

        SHA1

        556316657a186b4ab59e31c12ed9c92e7ae6922f

        SHA256

        9b3344a44b71f6d8b439f8f7c815dcee982b68cf74f30fc83b4216212c69f216

        SHA512

        84f792e3163ca2696421a5a38b41dd52c118e5dfafe5caa6a444d480333bfc5d3772fed9126a3840dc8e9c0a391c746cccdf8abacb7703b0a585b39c5b9ef1fb

      • C:\Users\Admin\AppData\Local\Temp\fvmzb6lj.0.vb

        Filesize

        1KB

        MD5

        29622516e4c9be1feb693b51ddfaa6d0

        SHA1

        7fd2f564a95f14101b4047d2728beedde60abb6f

        SHA256

        92db35abc01755d4e309ae6d956fe58d93fb3614cc9b10036ff4e473e872de15

        SHA512

        cf487e2d84996a48931244f5616cd24a8544baeb543b1775ebd2824acc8e40458608d20bbc6bcd58afed4150bea183b08e23ea5e631ee66914a8ef5bb5cad29d

      • C:\Users\Admin\AppData\Local\Temp\fvmzb6lj.cmdline

        Filesize

        314B

        MD5

        1d538a1d46ccf0b30e7a6817cb71969d

        SHA1

        fefe3bdaffbf88b485f99979ac51b1b7d74c5b28

        SHA256

        b3303881c5866a4e0f2da6bf6ebad5307f842a6ea3cdbe0e314620e389335bf4

        SHA512

        7d517c1623342a51c449fab0748856f2baabe7bbcb565609853aa1ad61c650fa1a02a471131e72b09d76aeb8b49a3a3ace1c57c341463d2eff9b96901f00015b

      • C:\Users\Admin\AppData\Local\Temp\vbc2E33A98A4C774BA98153F2FECE8EF0FC.TMP

        Filesize

        652B

        MD5

        4b2d458e7dd9a506cc9fc9e6db3c1051

        SHA1

        b149eabc7625d5aa1fa71a542901618558e4ea5e

        SHA256

        82bb2e03bfb28c5918a6f62e107aeca29ba6a1f7347eb2c114aac34dd0dc4ca7

        SHA512

        3c6cd9fcdbc895ab579925a0fa5bac64d742d496bc07fcb3eae4d4375a5b2b9ae8ce5c24ea8d74a8fc02a05c959df77f58cd41f4a34bdf7d09e501394cc0baac

      • memory/1476-2-0x00000000750C0000-0x0000000075671000-memory.dmp

        Filesize

        5.7MB

      • memory/1476-39-0x00000000750C0000-0x0000000075671000-memory.dmp

        Filesize

        5.7MB

      • memory/1476-38-0x00000000750C0000-0x0000000075671000-memory.dmp

        Filesize

        5.7MB

      • memory/1476-37-0x00000000750C2000-0x00000000750C3000-memory.dmp

        Filesize

        4KB

      • memory/1476-0-0x00000000750C2000-0x00000000750C3000-memory.dmp

        Filesize

        4KB

      • memory/1476-1-0x00000000750C0000-0x0000000075671000-memory.dmp

        Filesize

        5.7MB

      • memory/3604-15-0x0000000002220000-0x0000000002230000-memory.dmp

        Filesize

        64KB

      • memory/4508-5-0x0000000013140000-0x00000000131F6000-memory.dmp

        Filesize

        728KB

      • memory/4508-3-0x0000000013140000-0x00000000131F6000-memory.dmp

        Filesize

        728KB

      • memory/4508-4-0x0000000013140000-0x00000000131F6000-memory.dmp

        Filesize

        728KB

      • memory/4508-7-0x0000000002410000-0x0000000002411000-memory.dmp

        Filesize

        4KB

      • memory/4508-9-0x0000000013140000-0x00000000131F6000-memory.dmp

        Filesize

        728KB

      • memory/4508-10-0x0000000013140000-0x00000000131F6000-memory.dmp

        Filesize

        728KB

      • memory/4508-8-0x0000000013140000-0x00000000131F6000-memory.dmp

        Filesize

        728KB