Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-12-2024 15:48

General

  • Target

    JaffaCakes118_ff8c1a20470024e07905bcdc39616ac84252ed2aa7918b66a3aadf0183b4dfb4.exe

  • Size

    4.4MB

  • MD5

    2b86556e6194b0d681eff4f33d486fec

  • SHA1

    754b4c9a0b044e95ba6d8cbff1f642fff7f19bc4

  • SHA256

    ff8c1a20470024e07905bcdc39616ac84252ed2aa7918b66a3aadf0183b4dfb4

  • SHA512

    ffe8a4c0f69c6059f67c776b1f0416076fd895f44c8e315c6d671017dcf78adfeffc9fd084f1859e05ddd1aa6c3acdd4d6efef385d7fa1f96e1a4223f43bfc74

  • SSDEEP

    98304:dadbd5uiTzekT0yMRwJo6PwHqNyI1cp6A7YN1mxFZIW/ut0:dcd0HwX42ySdSx3IWGt0

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.

  • 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_ff8c1a20470024e07905bcdc39616ac84252ed2aa7918b66a3aadf0183b4dfb4.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff8c1a20470024e07905bcdc39616ac84252ed2aa7918b66a3aadf0183b4dfb4.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3120
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff8c1a20470024e07905bcdc39616ac84252ed2aa7918b66a3aadf0183b4dfb4.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff8c1a20470024e07905bcdc39616ac84252ed2aa7918b66a3aadf0183b4dfb4.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:4820
      • 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:3916
        • 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:5020
      • 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:2940
        • 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:224
        • 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:4928

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

    2b86556e6194b0d681eff4f33d486fec

    SHA1

    754b4c9a0b044e95ba6d8cbff1f642fff7f19bc4

    SHA256

    ff8c1a20470024e07905bcdc39616ac84252ed2aa7918b66a3aadf0183b4dfb4

    SHA512

    ffe8a4c0f69c6059f67c776b1f0416076fd895f44c8e315c6d671017dcf78adfeffc9fd084f1859e05ddd1aa6c3acdd4d6efef385d7fa1f96e1a4223f43bfc74

  • memory/2940-28-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-30-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-22-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-23-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-33-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-32-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-31-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-26-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-16-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-24-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-29-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-34-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-27-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/2940-25-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/3120-3-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/3120-2-0x00000000016C0000-0x0000000001FDE000-memory.dmp

    Filesize

    9.1MB

  • memory/3120-1-0x0000000001270000-0x00000000016B1000-memory.dmp

    Filesize

    4.3MB

  • memory/3120-4-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/3120-5-0x00000000016C0000-0x0000000001FDE000-memory.dmp

    Filesize

    9.1MB

  • memory/4820-15-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/4820-9-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/4820-8-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB

  • memory/4820-7-0x0000000000400000-0x0000000000D39000-memory.dmp

    Filesize

    9.2MB