Analysis

  • max time kernel
    148s
  • max time network
    127s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    14/10/2026, 06:22

General

  • Target
    chunk-0.msi
  • Size 3.1MB
  • Sample261014-g4vxeaxt8l
  • SHA256 26374a9d227f0a6fd9f72c982bb7939ecb8f18d5311d81fb4f3b64ba17eb732b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 3 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 14 IoCs
  • Stops running service(s) 4 TTPs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 32 IoCs
  • Launches sc.exe 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • 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.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\chunk-0.msi
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:5220
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3276
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4888
      • C:\Windows\System32\MsiExec.exe
        C:\Windows\System32\MsiExec.exe -Embedding 459A077BB66DE525C2C4DD142F56C35D
        2⤵
        • Loads dropped DLL
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1312
        • C:\Windows\system32\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSIA6C5.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240756609 2 ServiceActions!ServiceActions.CustomActions.StopServiceAndWait
          3⤵
          • Badlisted process makes network request
          • Loads dropped DLL
          • Drops file in Windows directory
          • Reads the TCP/IP host and domain name from the registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2192
          • C:\Windows\system32\cmd.exe
            "C:\Windows\system32\cmd.exe" /C sc stop
            4⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:5256
            • C:\Windows\system32\sc.exe
              sc stop
              5⤵
              • Launches sc.exe
              PID:5676
        • C:\Windows\system32\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSIBD30.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240762390 31 ServiceActions!ServiceActions.CustomActions.AddUpdateServiceDependency
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          PID:5524
        • C:\Windows\system32\rundll32.exe
          rundll32.exe "C:\Windows\Installer\MSIBEF6.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240762671 37 ServiceActions!ServiceActions.CustomActions.InstallServiceEvent
          3⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          PID:5048
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 7D9ADADF016F6F5F6839C0702E33D438
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:8
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5A59176AFC47C9D85DA6EE64605AF95F E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2220
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:3356
    • C:\Program Files\HP\HP Assess and Respond\HPAssessAndRespond.exe
      "C:\Program Files\HP\HP Assess and Respond\HPAssessAndRespond.exe" -i
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:2392
    • C:\Program Files\HP\HP Assess and Respond\HPAssessAndRespond.exe
      "C:\Program Files\HP\HP Assess and Respond\HPAssessAndRespond.exe" -i
      1⤵
      • Executes dropped EXE
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:3104

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59a1a6.rbs

          • Path C:\Config.Msi\e59a1a6.rbs
          • Size 219KB
          • SHA256 2b209387657d36b3920c65c4446be2b7885c2d33da2a003ec20b5f9c04ad92f3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          HPAssessAndRespond.exe

          • Path C:\Program Files\HP\HP Assess and Respond\HPAssessAndRespond.exe
          • Size 3.0MB
          • SHA256 7edad8ffdad06ace3200a5755d2f1c141aa9272de0a7fc58bebad9b16dbfb735
          • MD5 SHA1 SHA512 SSDEEP TLSH

          698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB
          • Size 471B
          • SHA256 b6ee29e2257f344fd859e326a17e80a16690fc13cbd2c9a1fd2f75a2257a2cca
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_2EA0E4A795707F956F0E5FE15EDB4B66

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_2EA0E4A795707F956F0E5FE15EDB4B66
          • Size 727B
          • SHA256 c4b81bc240037b086b5254d594989c4ea25231d8eaf0f1211d728c12121597dd
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 98a7b79594d98a581c639dc80206be351a65feef3051dcb1ebb7bf550e726765
          • MD5 SHA1 SHA512 TLSH

          698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB
          • Size 400B
          • SHA256 050e0fb08bd158445c4d33400cf888c546e4865cbc91b5372589fae867d4d4dd
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_2EA0E4A795707F956F0E5FE15EDB4B66

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_2EA0E4A795707F956F0E5FE15EDB4B66
          • Size 412B
          • SHA256 1b23f937bb9e4dc93b7c24a466ccfe4194daefe6d9128f9e7989294443787ebd
          • MD5 SHA1 SHA512 TLSH

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 8e39867fdab2b13bffe3a54818148a36caf657778ca59a96f83a98b563cf54bf
          • MD5 SHA1 SHA512 TLSH

          __PSScriptPolicyTest_i3sx1oox.bkh.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_i3sx1oox.bkh.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          MSIA6C5.tmp

          • Path C:\Windows\Installer\MSIA6C5.tmp
          • Size 553KB
          • SHA256 e7845a390e0c9b19aee3d069c6a883dd2d3e1e8c02f6265567778676c7a54326
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Windows\Installer\MSIA6C5.tmp-0\CustomAction.config
          • Size 1KB
          • SHA256 33d947c04a10e3aff3dca3b779393fa56ce5f02251c8cbae5076a125fdea081f
          • MD5 SHA1 SHA512 TLSH

          ServiceActions.dll

          • Path C:\Windows\Installer\MSIA6C5.tmp-0\ServiceActions.dll
          • Size 34KB
          • SHA256 21829956c0e0165dcebaf90a9a94ce5bc492128538a8c699eb8d4facd88489bd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAEA7.tmp

          • Path C:\Windows\Installer\MSIAEA7.tmp
          • Size 211KB
          • SHA256 c8d190d5be1efd2d52f72a72ae9dfa3940ab3faceb626405959349654fe18b74
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Windows\Installer\MSIBD30.tmp-0\Microsoft.Deployment.WindowsInstaller.dll
          • Size 183KB
          • SHA256 791da16b0df6956e88b04dab8b543b99dc2abd9af24aa25208fe5a0981e811b3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Newtonsoft.Json.dll

          • Path C:\Windows\Installer\MSIBEF6.tmp-0\Newtonsoft.Json.dll
          • Size 695KB
          • SHA256 e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59a1a7.msi

          • Path C:\Windows\Installer\e59a1a7.msi
          • Size 3.1MB
          • SHA256 26374a9d227f0a6fd9f72c982bb7939ecb8f18d5311d81fb4f3b64ba17eb732b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          HPAssessAndRespond.Agent.log

          • Path C:\Windows\System32\config\systemprofile\AppData\Roaming\hpqlog\HPAssessAndRespond.Agent.log
          • Size 3KB
          • SHA256 c0d3066db1da7a9621c23c882321b123e346974255aba00a5b2e0da64015270f
          • MD5 SHA1 SHA512 TLSH

          HPAssessAndRespond.Agent.log

          • Path C:\Windows\System32\config\systemprofile\AppData\Roaming\hpqlog\HPAssessAndRespond.Agent.log
          • Size 4KB
          • SHA256 b4812bc26a15ddc145d883a52824293f92c51f7f4a885392db463c7c2fd31abe
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 bc8d81ab7b9dfda36c62f8a7df28a5bfa826f153caed578ac0a3e4ac0cb6e479
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {6d91d86e-b0ac-4bc4-9af7-5e4c974bece5}_OnDiskSnapshotProp

          • Path \??\Volume{804c0bee-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{6d91d86e-b0ac-4bc4-9af7-5e4c974bece5}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 b6c2f9224a9682fc4a9ca73a899e869ae21c9518ac8000a657f91fd251acde67
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2192-47-0x0000022B59630000-0x0000022B59652000-memory.dmp

          memory/2192-34-0x0000022B40560000-0x0000022B4058E000-memory.dmp

          memory/2192-38-0x0000022B40510000-0x0000022B4051A000-memory.dmp

          memory/3104-73-0x000001EFB8FF0000-0x000001EFB9002000-memory.dmp

          memory/3104-67-0x000001EF9E720000-0x000001EF9EA2E000-memory.dmp

          memory/3104-69-0x000001EFB93D0000-0x000001EFB964E000-memory.dmp

          memory/3104-71-0x000001EFB8FA0000-0x000001EFB8FEC000-memory.dmp

          memory/3104-74-0x000001EFB9650000-0x000001EFB96C6000-memory.dmp

          memory/3104-72-0x000001EFB9250000-0x000001EFB9300000-memory.dmp

          memory/5048-165-0x000001E47AC30000-0x000001E47ACE2000-memory.dmp