Analysis

  • max time kernel
    150s
  • max time network
    151s
  • 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 12:09

General

  • Target

    JaffaCakes118_8e77e7c2feda9c83319109a4e485e9d974e344fb105b2329aae21c3bbe394d0a.exe

  • Size

    4.4MB

  • MD5

    30388f1fad131dd6a0fd85a549aff7b0

  • SHA1

    d990197def7b006e8f3c096540b60276215e86b1

  • SHA256

    8e77e7c2feda9c83319109a4e485e9d974e344fb105b2329aae21c3bbe394d0a

  • SHA512

    3f5f0f8c0f6307f650b59b4be7e5ee97e1144760d40363f2715efb5a3ef4eb600b5148820e9d96a602548a13b4d84e0625f6d9e94f838bf792022d1d85cb9fc4

  • SSDEEP

    98304:55IR4k5sITlHARZVDufSU7Gyl3OaoG7zqjRuZCb7lnw:55q4kSI1e7k7Gyl3CYo3XK

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 22 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 3 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_8e77e7c2feda9c83319109a4e485e9d974e344fb105b2329aae21c3bbe394d0a.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8e77e7c2feda9c83319109a4e485e9d974e344fb105b2329aae21c3bbe394d0a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4876
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8e77e7c2feda9c83319109a4e485e9d974e344fb105b2329aae21c3bbe394d0a.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8e77e7c2feda9c83319109a4e485e9d974e344fb105b2329aae21c3bbe394d0a.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:1480
      • 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:3376
        • 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:4460
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe /188-188
        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:3960
        • 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:1672
        • 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:800
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4876 -s 816
      2⤵
      • Program crash
      PID:4004
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4876 -ip 4876
    1⤵
      PID:3300

    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

      30388f1fad131dd6a0fd85a549aff7b0

      SHA1

      d990197def7b006e8f3c096540b60276215e86b1

      SHA256

      8e77e7c2feda9c83319109a4e485e9d974e344fb105b2329aae21c3bbe394d0a

      SHA512

      3f5f0f8c0f6307f650b59b4be7e5ee97e1144760d40363f2715efb5a3ef4eb600b5148820e9d96a602548a13b4d84e0625f6d9e94f838bf792022d1d85cb9fc4

    • memory/1480-8-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/1480-9-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/1480-17-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/1480-10-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-34-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-26-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-35-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-24-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-33-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-18-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-36-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-32-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-27-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-31-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-25-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-28-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-29-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/3960-30-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/4876-1-0x0000000004470000-0x00000000048B6000-memory.dmp

      Filesize

      4.3MB

    • memory/4876-7-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4876-6-0x00000000048C0000-0x00000000051DE000-memory.dmp

      Filesize

      9.1MB

    • memory/4876-3-0x0000000000400000-0x0000000000D39000-memory.dmp

      Filesize

      9.2MB

    • memory/4876-5-0x0000000000400000-0x000000000257E000-memory.dmp

      Filesize

      33.5MB

    • memory/4876-2-0x00000000048C0000-0x00000000051DE000-memory.dmp

      Filesize

      9.1MB