Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-12-2024 02:40

General

  • Target

    JaffaCakes118_53915f3935a446e528097deec43a894d2fc2be39cfadd67545948d5243389a64.exe

  • Size

    4.1MB

  • MD5

    abeabdbb9718252ed8a2a9657258d00b

  • SHA1

    b1d2229da6e275cd07c782c5651584cac8927c47

  • SHA256

    53915f3935a446e528097deec43a894d2fc2be39cfadd67545948d5243389a64

  • SHA512

    23ac68fae3fc32e59e61ee7e5fbe1fd9853f1a41e9ab16a46bad4a5e3f85a23d58f2f53ca781f0c331a468c129ef9be748c81ab52428f7781b97fa5aa66ee0ce

  • SSDEEP

    98304:hMuvbvTXLFvImlCifayYhN/x4PwkM9qAOHWRAVasYasaqQaL:GuvvKUCOafT54PwkMs0RuC

Malware Config

Signatures

  • Glupteba

    Glupteba is a modular loader written in Golang with various components.

  • Glupteba family
  • Glupteba payload 19 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Manipulates WinMonFS driver. 1 IoCs

    Roottkits write to WinMonFS to hide directories/files from being detected.

  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • Drops file in Windows directory 2 IoCs
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies data under HKEY_USERS 64 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 9 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\JaffaCakes118_53915f3935a446e528097deec43a894d2fc2be39cfadd67545948d5243389a64.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53915f3935a446e528097deec43a894d2fc2be39cfadd67545948d5243389a64.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1884
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53915f3935a446e528097deec43a894d2fc2be39cfadd67545948d5243389a64.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53915f3935a446e528097deec43a894d2fc2be39cfadd67545948d5243389a64.exe"
      2⤵
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3932
      • C:\Windows\system32\cmd.exe
        C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1540
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:2156
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:5008
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2172
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4428
          • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:3532
          • C:\Windows\SYSTEM32\schtasks.exe
            schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
            4⤵
            • Scheduled Task/Job: Scheduled Task
            PID:1568

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

      Filesize

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      abeabdbb9718252ed8a2a9657258d00b

      SHA1

      b1d2229da6e275cd07c782c5651584cac8927c47

      SHA256

      53915f3935a446e528097deec43a894d2fc2be39cfadd67545948d5243389a64

      SHA512

      23ac68fae3fc32e59e61ee7e5fbe1fd9853f1a41e9ab16a46bad4a5e3f85a23d58f2f53ca781f0c331a468c129ef9be748c81ab52428f7781b97fa5aa66ee0ce

    • memory/1884-1-0x00000000034F0000-0x00000000038E5000-memory.dmp

      Filesize

      4.0MB

    • memory/1884-2-0x0000000005090000-0x0000000005907000-memory.dmp

      Filesize

      8.5MB

    • memory/1884-3-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/1884-4-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/1884-6-0x0000000005090000-0x0000000005907000-memory.dmp

      Filesize

      8.5MB

    • memory/1884-7-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/3932-8-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/3932-13-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-20-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-21-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-22-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-23-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-24-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-25-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-26-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-27-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-28-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-29-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-30-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-31-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB

    • memory/5008-32-0x0000000000400000-0x0000000003012000-memory.dmp

      Filesize

      44.1MB