Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    19-07-2024 18:44

General

  • Target

    5d329190630c5c051e1b2c4ad4c69abd_JaffaCakes118.exe

  • Size

    1.3MB

  • MD5

    5d329190630c5c051e1b2c4ad4c69abd

  • SHA1

    0227d4e1597ca90477cad5fc3a960f3590457031

  • SHA256

    6974f159cb6e056fd9675ec4ecb6d271a7d6bb69711a295be593091d3bcb9e45

  • SHA512

    0b0f745634bbab4234b0b8b9e5f80c9c99870fe0647afcfa88ffe1990012e9968bcf6f722d7f87c54e6cc7ca566e910a605688e7825a9b82629114f67dae69b9

  • SSDEEP

    24576:O2G/nvxW3WDkIavL5BH7pdKk+BSjLeuNVg+4u:ObA3BI+BH9uB+r

Malware Config

Signatures

  • DcRat 6 IoCs

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Modifies WinLogon for persistence 2 TTPs 6 IoCs
  • Process spawned unexpected child process 6 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • DCRat payload 3 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 12 IoCs
  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\5d329190630c5c051e1b2c4ad4c69abd_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\5d329190630c5c051e1b2c4ad4c69abd_JaffaCakes118.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1596
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Adobe\sN8j8UtUmLUEbzv.vbe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2748
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Roaming\Adobe\87tDm8T1lOvAjdSEmWMIMA3JTpcTMB.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2708
        • C:\Users\Admin\AppData\Roaming\Adobe\hui.exe
          "C:\Users\Admin\AppData\Roaming\Adobe\hui.exe"
          4⤵
          • Modifies WinLogon for persistence
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in System32 directory
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2572
          • C:\Windows\System32\NlsLexicons0007\csrss.exe
            "C:\Windows\System32\NlsLexicons0007\csrss.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2432
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "hui" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Roaming\Adobe\hui\hui.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2264
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\audiodg.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1976
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\System32\NlsLexicons0007\csrss.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:304
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPC\OSPPSVC.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1528
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Windows\System32\D3DCompiler_47\conhost.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3004
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Documents and Settings\WmiPrvSE.exe'" /rl HIGHEST /f
    1⤵
    • DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Adobe\87tDm8T1lOvAjdSEmWMIMA3JTpcTMB.bat

    Filesize

    25B

    MD5

    e7f48aa75e0fb6a5ff062767274b118a

    SHA1

    35708e08c6fd4f4d5b90d205535eaf614f616947

    SHA256

    75d94792b854edf88578815103ae48089e1cb0566c97c86bc3b3ecf5373778d7

    SHA512

    85d827e4d81a7612ae78feda079f1a82812d7a430643db6bb3863c3cfe618649eb15b574c367d070c6fc594ebaf1c8ada66390279c703f7eb88e2c8b9a21adcb

  • C:\Users\Admin\AppData\Roaming\Adobe\hui.exe

    Filesize

    922KB

    MD5

    1b46dad7064609344351ac9efe3f9aab

    SHA1

    9aa8051f5ef6f800410ec669e52b415b6bf43816

    SHA256

    3bd60f927e3882940077fa527712e5c55a2767564b39a932c4d4941e190a4c81

    SHA512

    ce773799e73f0b61a793098df7a824346ec1d94d16877a272ace42a644d4fdf7d6a68b4a7c976b4b90471036f0d68b56bbfec18cffc68331c32970e7db7c57c4

  • C:\Users\Admin\AppData\Roaming\Adobe\sN8j8UtUmLUEbzv.vbe

    Filesize

    219B

    MD5

    70e5d6cdf95e6c8bd3cb92a5f27b41f1

    SHA1

    2139d28ec203b8e56a4d4b5f35cdc971711ee16b

    SHA256

    ddbb5359838904c2276556b9e509443ffecba2ef2c15c97370f0a0df01a22a0d

    SHA512

    b49e59956fe3b04980c2e9ba174da14239277b64c15a0d4cef2af1976bbaf9c7fec4a430afa1c1f56563a9f70b6d6339872be7dd847597a84b2a52730b399f3d

  • memory/2432-32-0x00000000012E0000-0x00000000013CE000-memory.dmp

    Filesize

    952KB

  • memory/2572-13-0x0000000001300000-0x00000000013EE000-memory.dmp

    Filesize

    952KB