Analysis

  • max time kernel
    178s
  • max time network
    167s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 02:17

General

  • Target
    CloudUpdateTaskMachineCore.exe
  • Size 2.3MB
  • Sample260804-cqntqabd85
  • SHA256 411dae43c4215ea9543a4de4d18d8112e968d918bd3f7d917c14139e29f1fcb2
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Downloads MZ/PE file 4 IoCs
  • Drops file in System32 directory 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 1 IoCs
  • Executes a command shell one-liner 1 TTPs 10 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 24 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore.exe
    "C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore.exe"
    1⤵
    • Downloads MZ/PE file
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3652
    • C:\ProgramData\CloudTaskModule\CloudTaskModule.exe
      C:\ProgramData\CloudTaskModule\CloudTaskModule.exe
      2⤵
      • Executes dropped EXE
      PID:5932
    • C:\ProgramData\CloudTaskModule\CloudTaskModule.exe
      C:\ProgramData\CloudTaskModule\CloudTaskModule.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:124
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks /query /tn "CloudTaskModule" /fo csv 2>nul
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4432
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /query /tn "CloudTaskModule" /fo csv
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4380
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks /query /tn "CloudTaskModule" 2>nul
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2720
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /query /tn "CloudTaskModule"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:5352
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks /create /tn "CloudTaskModule" /xml "C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore_CloudTaskModule.xml" /f
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1324
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /tn "CloudTaskModule" /xml "C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore_CloudTaskModule.xml" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:644
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks /query /tn "CloudTaskUpdater" /fo csv 2>nul
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5368
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /query /tn "CloudTaskUpdater" /fo csv
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3636
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks /query /tn "CloudTaskUpdater" 2>nul
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3404
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /query /tn "CloudTaskUpdater"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3680
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks /create /tn "CloudTaskUpdater" /xml "C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore_CloudTaskUpdater.xml" /f
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5080
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /tn "CloudTaskUpdater" /xml "C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore_CloudTaskUpdater.xml" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4076
  • C:\ProgramData\CloudTaskModule\CloudTaskModule.exe
    C:\ProgramData\CloudTaskModule\CloudTaskModule.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:5476
  • C:\ProgramData\CloudTaskModule\CloudTaskUpdater.exe
    C:\ProgramData\CloudTaskModule\CloudTaskUpdater.exe
    1⤵
    • Downloads MZ/PE file
    • Drops file in System32 directory
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:6020
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks /query /tn "CloudTaskModule" /fo csv 2>nul
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1556
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /query /tn "CloudTaskModule" /fo csv
        3⤵
        • System Location Discovery: System Language Discovery
        PID:5344
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks /query /tn "CyanHookLink" /fo csv 2>nul
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2440
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /query /tn "CyanHookLink" /fo csv
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2964
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks /query /tn "CyanHookLink" 2>nul
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2168
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /query /tn "CyanHookLink"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:6108
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c schtasks /create /tn "CyanHookLink" /xml "C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore_CyanHookLink.xml" /f
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2800
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /tn "CyanHookLink" /xml "C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore_CyanHookLink.xml" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1332

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        CloudTaskCore.dll

        • Path C:\ProgramData\CloudTaskModule\CloudTaskCore.dll
        • Size 2.1MB
        • SHA256 bfa644eff0693342fd564b145f02e919662bc773aaac70ea7f0272725d358776
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CloudTaskModule.exe

        • Path C:\ProgramData\CloudTaskModule\CloudTaskModule.exe
        • Size 2.3MB
        • SHA256 0e996d540628d7e2ea89b18731f3d134c54d0c34a589cc970f40c82768424d97
        • MD5 SHA1 SHA512 SSDEEP TLSH

        103621DE9CD5414CC2538780B4B75751

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751
        • Size 808B
        • SHA256 3dd5ea8a14eb665ba6057d424f94e5e83757ffaab456578dbf038af04053b19e
        • MD5 SHA1 SHA512 TLSH

        1B1495DD322A24490E2BF2FAABAE1C61

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\1B1495DD322A24490E2BF2FAABAE1C61
        • Size 355B
        • SHA256 12fd0590708bb38d8039bc994178acee8a3d220f0cd194b0f1c2fc9ba622f927
        • MD5 SHA1 SHA512 TLSH

        22D536C4B4AD2CEF7AC6B7789FD235E3

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\22D536C4B4AD2CEF7AC6B7789FD235E3
        • Size 283B
        • SHA256 251ed08cc8f5873098ea5ee083034e7cd99ece955920e12a42e50306a94cb6eb
        • MD5 SHA1 SHA512 TLSH

        7BF6DD80409EA02D48A6924EB2E3E074

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7BF6DD80409EA02D48A6924EB2E3E074
        • Size 36KB
        • SHA256 f8ebc36f6fc14c139b5b199710df371d3489f1af18ec12a75cda11c4c3e8eda2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        103621DE9CD5414CC2538780B4B75751

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751
        • Size 192B
        • SHA256 85d42f1a3d3ab9d3afd69db4d687d7f662bc2fef589abbe7c5c1a6b2c145cfc6
        • MD5 SHA1 SHA512 TLSH

        1B1495DD322A24490E2BF2FAABAE1C61

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\1B1495DD322A24490E2BF2FAABAE1C61
        • Size 192B
        • SHA256 c96a185de564d2d5826aa91d7deb77a893f2fc8fc42a0d1f4d57e5d9fb7c6a0c
        • MD5 SHA1 SHA512 TLSH

        22D536C4B4AD2CEF7AC6B7789FD235E3

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\22D536C4B4AD2CEF7AC6B7789FD235E3
        • Size 192B
        • SHA256 f5ee1913107ef6855916ba3cb6458727f3d9cf91dc8976ef2e25015584d25f5e
        • MD5 SHA1 SHA512 TLSH

        7BF6DD80409EA02D48A6924EB2E3E074

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7BF6DD80409EA02D48A6924EB2E3E074
        • Size 248B
        • SHA256 3645ca98e1ce339f31500f37429947c451b30329febdb68a7c558758d70a56ef
        • MD5 SHA1 SHA512 TLSH

        CloudTaskUpdater[1].exe

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6BBNO8US\CloudTaskUpdater[1].exe
        • Size 2.3MB
        • SHA256 d87ba1506a646d65a356f14c8a5797efc8609b5c6fdf2760876d3d3a25aad890
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CloudTaskUpdateMonthly[1].exe

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\BJDESKSS\CloudTaskUpdateMonthly[1].exe
        • Size 2.3MB
        • SHA256 3436c58afe4d143b4665ba1ad5ae9d618945df5a84273f94d671101d972dc3a0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CloudUpdateTaskMachineCore_CloudTaskModule.xml

        • Path C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore_CloudTaskModule.xml
        • Size 1KB
        • SHA256 6f56b5136263b89103419d0abaf0818c21d84a9b963fa0fd884d4e8a447fa67f
        • MD5 SHA1 SHA512 TLSH

        CloudUpdateTaskMachineCore_CloudTaskUpdater.xml

        • Path C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore_CloudTaskUpdater.xml
        • Size 1KB
        • SHA256 e0adce25b1f46fa8d30aa637539ec51fae93332f721bba74dcd69970b695ecf0
        • MD5 SHA1 SHA512 TLSH

        CloudUpdateTaskMachineCore_CyanHookLink.xml

        • Path C:\Users\Admin\AppData\Local\Temp\CloudUpdateTaskMachineCore_CyanHookLink.xml
        • Size 3KB
        • SHA256 ac3f8c7484ad43de2405f6466af909750c5f26967beeea91302a8db4b662621d
        • MD5 SHA1 SHA512 TLSH