Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-11-2024 07:10

General

  • Target

    afa960d772a3025176774141b7171fac_JaffaCakes118.exe

  • Size

    987KB

  • MD5

    afa960d772a3025176774141b7171fac

  • SHA1

    8e40f89dd9a54938c1bdbe71e88c68d316d49ff5

  • SHA256

    deef8627aa367994fa3e80cf2341e40cc5e76cbed492b0a0e57a60965a30d495

  • SHA512

    1dc46fb8628454f1dce890569a27f0619e604427e0458cdf46e7645908fc00e0136ca6699c7a4faf2c9b8dac9fcc4c0680161f0081992f5d64b4fbf157c48836

  • SSDEEP

    24576:1tARHJKlrUqX5MOnTm+CFO4QvQVTTY6Eb5S:1tAR8GqXlnS+CnQvATT2S

Malware Config

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • 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 4 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 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
  • Modifies registry class 44 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\afa960d772a3025176774141b7171fac_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\afa960d772a3025176774141b7171fac_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1028
    • C:\Users\Admin\AppData\Local\Temp\DFNER.exe
      "C:\Users\Admin\AppData\Local\Temp\DFNER.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2248
      • C:\Users\Admin\AppData\Local\Temp\DFNER.exe
        "C:\Users\Admin\AppData\Local\Temp\DFNER.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Checks BIOS information in registry
        • Checks computer location settings
        • Executes dropped EXE
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:464
        • C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
          "C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3952
          • C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
            "C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
            5⤵
            • 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:4000
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\rserars.bat
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3256

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\DFNER.exe

    Filesize

    32KB

    MD5

    67a75cf7cebc7b3d2071e7884f8ebba9

    SHA1

    ac9de2f53c840dd8a8607eb135b8226272dc7781

    SHA256

    f321ed896779285be329a541bd4ab435fa9af86337b51f5c2b4479a92e6e9ac2

    SHA512

    547b19a7afe8ce5bb36da766488363c8aa1c570b6f33aab1d801b7ad2cc85b1555a11fa2adbf852b753f39af5f21c08c30866b75c309541c15805563b1ed8e5a

  • C:\Users\Admin\AppData\Local\Temp\autAAF5.tmp

    Filesize

    713KB

    MD5

    e7b749baaaf62f187e1a49871065e9ae

    SHA1

    e9d8788e73f9ed735bf6f0b96d5355c173e82992

    SHA256

    2611acbb63970b121fd03ab027c6a3415b5c47a86e1cb9fa556fb1d237c5a3a8

    SHA512

    6cc3fc1fb930e093c46e4ca6f3d06dc7b6806a051f007e8460b0303b5c4000d38c7170bdc2d7011f7d78e6350fe016f9774c9faaa5849bb7cf0d514fc8c67c72

  • C:\rserars.bat

    Filesize

    145B

    MD5

    457cced7a6b57d29373c684df02b7ce9

    SHA1

    c56976b326f42de4841369edbc6fb56cf9151723

    SHA256

    93200aff412fe035ce15e0437bc7f075860fd075a062c7b62bccc431e9d9e015

    SHA512

    a08dad4af9565898f6813878d93f012203eb5ece4f879bdd563fa84717f300f30fe59b6b5637a24997e3b79ebcb710018d54948cee17d0babb89cd56b722eb99

  • memory/464-28-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/464-32-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/464-33-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/464-35-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/464-37-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/464-36-0x00000000022E0000-0x00000000022E1000-memory.dmp

    Filesize

    4KB

  • memory/464-50-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/1028-0-0x0000000000400000-0x00000000004AC000-memory.dmp

    Filesize

    688KB

  • memory/1028-24-0x0000000000400000-0x00000000004AC000-memory.dmp

    Filesize

    688KB

  • memory/4000-61-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-68-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-58-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-62-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-63-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-64-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-65-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-66-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-67-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-60-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-69-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-70-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-71-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-72-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-73-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-74-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-75-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-76-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4000-77-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB