Analysis

  • max time kernel
    152s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    17/03/2025, 03:20

General

  • Target

    3339f240ffeb755b2f4874cbd4d0bbf7.exe

  • Size

    11.6MB

  • MD5

    3339f240ffeb755b2f4874cbd4d0bbf7

  • SHA1

    c81181e483cdfc5fc552f22b3dcfa0cd2782cf34

  • SHA256

    a7deeabed9261564ba79c04d3909539ec31bada0b1c4e16755d759f742fb9818

  • SHA512

    b252e1037c6126ded63491f09b1b7e4aa651feef449c79f781c3a2262658831eca6208a33c0076f757010c6a96cb7f582e846c6c8af33ecb651bf271e691c9ce

  • SSDEEP

    196608:krNm6AcQaUw3990H1+njZeHWpHGpvF6NIbxqZuROk1CbtQvEp4Q28Q:kheCIwnOWMpvsiQURXUBQvk4Q2j

Malware Config

Extracted

Family

njrat

Version

<- NjRAT 0.7d Horror Edition ->

Botnet

Victim

C2

thursday-bytes.gl.at.ply.gg:55648

Mutex

caa5ab06fdce65c809c563c98d39620a

Attributes
  • reg_key

    caa5ab06fdce65c809c563c98d39620a

  • splitter

    Y262SUCZ4UJJ

Signatures

  • Njrat family
  • UAC bypass 3 TTPs 1 IoCs
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Stops running service(s) 4 TTPs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 10 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • UPX packed file 2 IoCs

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

  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Detects Pyinstaller 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry key 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 38 IoCs
  • Suspicious use of WriteProcessMemory 60 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.

  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3339f240ffeb755b2f4874cbd4d0bbf7.exe
    "C:\Users\Admin\AppData\Local\Temp\3339f240ffeb755b2f4874cbd4d0bbf7.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2148
    • C:\Users\Admin\AppData\Local\Temp\dfwx.exe
      "C:\Users\Admin\AppData\Local\Temp\dfwx.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:668
      • C:\Users\Admin\AppData\Local\Temp\dfwx.exe
        "C:\Users\Admin\AppData\Local\Temp\dfwx.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1780
    • C:\Users\Admin\AppData\Local\Temp\Payload.exe
      "C:\Users\Admin\AppData\Local\Temp\Payload.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2812
      • C:\ProgramData\dllhost.exe
        "C:\ProgramData\dllhost.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:972
        • C:\Windows\system32\attrib.exe
          attrib +h "C:\ProgramData\dllhost.exe"
          4⤵
          • Views/modifies file attributes
          PID:2016
        • C:\Windows\system32\cmd.exe
          cmd /c powershell Set-MpPreference -DisableRealtimeMonitoring $true
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2388
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell Set-MpPreference -DisableRealtimeMonitoring $true
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of AdjustPrivilegeToken
            PID:1436
        • C:\Windows\system32\cmd.exe
          cmd /c sc query windefend
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2548
          • C:\Windows\system32\sc.exe
            sc query windefend
            5⤵
            • Launches sc.exe
            PID:1604
        • C:\Windows\system32\cmd.exe
          cmd /c sc stop windefend
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:236
          • C:\Windows\system32\sc.exe
            sc stop windefend
            5⤵
            • Launches sc.exe
            PID:1252
        • C:\Windows\system32\cmd.exe
          cmd /c sc delete windefend
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1464
          • C:\Windows\system32\sc.exe
            sc delete windefend
            5⤵
            • Launches sc.exe
            PID:1672
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn CleanSweepCheck /f
          4⤵
            PID:1328
          • C:\Windows\system32\schtasks.exe
            schtasks /create /sc minute /mo 1 /tn CleanSweepCheck /tr C:\ProgramData\dllhost.exe
            4⤵
            • Scheduled Task/Job: Scheduled Task
            PID:964
          • C:\Windows\system32\cmd.exe
            cmd /c reg ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1984
            • C:\Windows\system32\reg.exe
              reg ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
              5⤵
              • UAC bypass
              • Modifies registry key
              PID:1948
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {755D1CCB-D943-4068-A617-B298E3F41D0E} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1572
      • C:\ProgramData\dllhost.exe
        C:\ProgramData\dllhost.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:556
      • C:\ProgramData\dllhost.exe
        C:\ProgramData\dllhost.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2796
      • C:\ProgramData\dllhost.exe
        C:\ProgramData\dllhost.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2984

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      32KB

      MD5

      e360658f5fbcad55cedab6107e741ae4

      SHA1

      c7039a18cb56a8eaeae66b3cb9ef7c63dd307aea

      SHA256

      41245f09293fcc0cb97bb36e4a9d79b3b2c50d6d9f1e21ea3bd66b44d9629afe

      SHA512

      000ec3668473eb62433e08a1e26e6068ef2647d1fd11368fe9a1c4c6442164e3ba969f08c5c563c6a5f3ed5e5acec410d927cbd9f29f393e0fc37aab2e38c232

    • C:\Users\Admin\AppData\Local\Temp\_MEI6682\api-ms-win-core-file-l1-2-0.dll

      Filesize

      21KB

      MD5

      1c58526d681efe507deb8f1935c75487

      SHA1

      0e6d328faf3563f2aae029bc5f2272fb7a742672

      SHA256

      ef13dce8f71173315dfc64ab839b033ab19a968ee15230e9d4d2c9d558efeee2

      SHA512

      8edb9a0022f417648e2ece9e22c96e2727976332025c3e7d8f15bcf6d7d97e680d1bf008eb28e2e0bd57787dcbb71d38b2deb995b8edc35fa6852ab1d593f3d1

    • C:\Users\Admin\AppData\Local\Temp\_MEI6682\api-ms-win-core-file-l2-1-0.dll

      Filesize

      18KB

      MD5

      bfffa7117fd9b1622c66d949bac3f1d7

      SHA1

      402b7b8f8dcfd321b1d12fc85a1ee5137a5569b2

      SHA256

      1ea267a2e6284f17dd548c6f2285e19f7edb15d6e737a55391140ce5cb95225e

      SHA512

      b319cc7b436b1be165cdf6ffcab8a87fe29de78f7e0b14c8f562be160481fb5483289bd5956fdc1d8660da7a3f86d8eede35c6cc2b7c3d4c852decf4b2dcdb7f

    • C:\Users\Admin\AppData\Local\Temp\_MEI6682\api-ms-win-core-processthreads-l1-1-1.dll

      Filesize

      21KB

      MD5

      517eb9e2cb671ae49f99173d7f7ce43f

      SHA1

      4ccf38fed56166ddbf0b7efb4f5314c1f7d3b7ab

      SHA256

      57cc66bf0909c430364d35d92b64eb8b6a15dc201765403725fe323f39e8ac54

      SHA512

      492be2445b10f6bfe6c561c1fc6f5d1af6d1365b7449bc57a8f073b44ae49c88e66841f5c258b041547fcd33cbdcb4eb9dd3e24f0924db32720e51651e9286be

    • C:\Users\Admin\AppData\Local\Temp\_MEI6682\api-ms-win-core-timezone-l1-1-0.dll

      Filesize

      21KB

      MD5

      d12403ee11359259ba2b0706e5e5111c

      SHA1

      03cc7827a30fd1dee38665c0cc993b4b533ac138

      SHA256

      f60e1751a6ac41f08e46480bf8e6521b41e2e427803996b32bdc5e78e9560781

      SHA512

      9004f4e59835af57f02e8d9625814db56f0e4a98467041da6f1367ef32366ad96e0338d48fff7cc65839a24148e2d9989883bcddc329d9f4d27cae3f843117d0

    • C:\Users\Admin\AppData\Local\Temp\_MEI6682\python311.dll

      Filesize

      1.6MB

      MD5

      db09c9bbec6134db1766d369c339a0a1

      SHA1

      c156d9f2d0e80b4cf41794cd9b8b1e8a352e0a0b

      SHA256

      b1aac1e461174bbae952434e4dac092590d72b9832a04457c94bd9bb7ee8ad79

      SHA512

      653a7fff6a2b6bffb9ea2c0b72ddb83c9c53d555e798eea47101b0d932358180a01af2b9dab9c27723057439c1eaffb8d84b9b41f6f9cd1c3c934f1794104d45

    • \Users\Admin\AppData\Local\Temp\_MEI6682\api-ms-win-core-localization-l1-2-0.dll

      Filesize

      21KB

      MD5

      724223109e49cb01d61d63a8be926b8f

      SHA1

      072a4d01e01dbbab7281d9bd3add76f9a3c8b23b

      SHA256

      4e975f618df01a492ae433dff0dd713774d47568e44c377ceef9e5b34aad1210

      SHA512

      19b0065b894dc66c30a602c9464f118e7f84d83010e74457d48e93aaca4422812b093b15247b24d5c398b42ef0319108700543d13f156067b169ccfb4d7b6b7c

    • \Users\Admin\AppData\Local\Temp\_MEI6682\ucrtbase.dll

      Filesize

      992KB

      MD5

      0e0bac3d1dcc1833eae4e3e4cf83c4ef

      SHA1

      4189f4459c54e69c6d3155a82524bda7549a75a6

      SHA256

      8a91052ef261b5fbf3223ae9ce789af73dfe1e9b0ba5bdbc4d564870a24f2bae

      SHA512

      a45946e3971816f66dd7ea3788aacc384a9e95011500b458212dc104741315b85659e0d56a41570731d338bdf182141c093d3ced222c007038583ceb808e26fd

    • \Users\Admin\AppData\Local\Temp\dfwx.exe

      Filesize

      11.8MB

      MD5

      1790b4953ddddc444c03da3c1c493cd1

      SHA1

      f0c3dbd9b05868876f2bb966dc7972cc2fd6d49e

      SHA256

      fcef0944b1f15860e8c7c5c21725272d50a51a2ba9e9e634a4fb900b27004743

      SHA512

      33382130dc21b511bc2422b6bd3f43f937b906811ba6aed2561f6e90ecabfb08e5d6a9e0fda30c880717be5165bfe946784f5b31c3d7d9886f7476a261ff82a0

    • memory/1436-201-0x000000001B3A0000-0x000000001B682000-memory.dmp

      Filesize

      2.9MB

    • memory/1436-202-0x0000000002220000-0x0000000002228000-memory.dmp

      Filesize

      32KB

    • memory/1780-115-0x000007FEF6650000-0x000007FEF6C38000-memory.dmp

      Filesize

      5.9MB

    • memory/2148-68-0x000007FEF6250000-0x000007FEF6C3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2148-4-0x000007FEF6250000-0x000007FEF6C3C000-memory.dmp

      Filesize

      9.9MB

    • memory/2148-1-0x0000000000EB0000-0x0000000001A5A000-memory.dmp

      Filesize

      11.7MB

    • memory/2148-0-0x000007FEF6253000-0x000007FEF6254000-memory.dmp

      Filesize

      4KB

    • memory/2796-206-0x0000000000280000-0x0000000000294000-memory.dmp

      Filesize

      80KB

    • memory/2812-43-0x000007FEEED0E000-0x000007FEEED0F000-memory.dmp

      Filesize

      4KB

    • memory/2812-103-0x000007FEEEA50000-0x000007FEEF3ED000-memory.dmp

      Filesize

      9.6MB

    • memory/2812-100-0x000007FEEEA50000-0x000007FEEF3ED000-memory.dmp

      Filesize

      9.6MB

    • memory/2812-123-0x000007FEEEA50000-0x000007FEEF3ED000-memory.dmp

      Filesize

      9.6MB

    • memory/2812-99-0x0000000000370000-0x0000000000384000-memory.dmp

      Filesize

      80KB

    • memory/2984-208-0x0000000000A90000-0x0000000000AA4000-memory.dmp

      Filesize

      80KB