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Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2024, 09:23

General

  • Target

    JaffaCakes118_73ac2103a068446f50f6e68f85a9647a20c5e9a09c19ed96d94de1506b5c694d.exe

  • Size

    4.4MB

  • MD5

    c057bd243731f0e4b8b6372b1b6f55d3

  • SHA1

    5bd84e1f1869e2a73d85f990fd71a263fb3ecd36

  • SHA256

    73ac2103a068446f50f6e68f85a9647a20c5e9a09c19ed96d94de1506b5c694d

  • SHA512

    59e16632464c92ca7ec676851be650459591cfd165513244190a691f65efeb03a321cdfbb6b2f76717b9558967e32221b633730c27e5a697729e68f1eee72f98

  • SSDEEP

    98304:NiuGUbG4+/6gfRfpVa+wegAYuHsSZOLPp:NiVAlwF7aXbYHsc6p

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

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

  • Glupteba family
  • Glupteba payload 20 IoCs
  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

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

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

  • 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.

  • Program crash 1 IoCs
  • 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.

  • GoLang User-Agent 5 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 3 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 4 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_73ac2103a068446f50f6e68f85a9647a20c5e9a09c19ed96d94de1506b5c694d.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73ac2103a068446f50f6e68f85a9647a20c5e9a09c19ed96d94de1506b5c694d.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:64
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73ac2103a068446f50f6e68f85a9647a20c5e9a09c19ed96d94de1506b5c694d.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73ac2103a068446f50f6e68f85a9647a20c5e9a09c19ed96d94de1506b5c694d.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
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1352
      • 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:4288
        • 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:2192
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe /51-51
        3⤵
        • Executes dropped EXE
        • 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:4024
        • 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:4664
        • 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:4316
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 64 -s 864
      2⤵
      • Program crash
      PID:180
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 64 -ip 64
    1⤵
      PID:696

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    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

      4.4MB

      MD5

      c057bd243731f0e4b8b6372b1b6f55d3

      SHA1

      5bd84e1f1869e2a73d85f990fd71a263fb3ecd36

      SHA256

      73ac2103a068446f50f6e68f85a9647a20c5e9a09c19ed96d94de1506b5c694d

      SHA512

      59e16632464c92ca7ec676851be650459591cfd165513244190a691f65efeb03a321cdfbb6b2f76717b9558967e32221b633730c27e5a697729e68f1eee72f98

    • memory/64-2-0x0000000001600000-0x0000000001F1E000-memory.dmp

      Filesize

      9.1MB

    • memory/64-3-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/64-5-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/64-6-0x0000000001600000-0x0000000001F1E000-memory.dmp

      Filesize

      9.1MB

    • memory/64-1-0x00000000011B0000-0x00000000015F5000-memory.dmp

      Filesize

      4.3MB

    • memory/1352-7-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/1352-8-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/1352-14-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-22-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-27-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-15-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-23-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-24-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-25-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-26-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-21-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-28-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-29-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-30-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-31-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-32-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4024-33-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB