Analysis

  • user interaction
    yes
  • max time kernel
    110s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    04/08/2026, 19:08

General

  • Target
    heleninstaller_3.3.msi
  • Size 19.9MB
  • Sample260804-xtmfaacm9y
  • SHA256 aa722e8fcb143df006d87e43c2910ee993352a3973a1b8190f0d405a97f44f71
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 39 IoCs
  • 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 22 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 44 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 16 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 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 15 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\heleninstaller_3.3.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1268
  • 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
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2320
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1908
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 70C8C65FAD3580ED3C2B30ED9143CF2A M Global\MSI0000
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:3272
    • C:\Windows\syswow64\MsiExec.exe
      "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Windows\SysWOW64\UniSuiteFree.ocx"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:3724
    • C:\Windows\syswow64\MsiExec.exe
      "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Program Files (x86)\Hanover Displays\Helen\dlls\CGZipLibrary.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:5004
    • C:\Windows\syswow64\MsiExec.exe
      "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Program Files (x86)\Common Files\Microsoft Shared\DAO\Dao350.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:1348
    • C:\Windows\syswow64\MsiExec.exe
      "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Windows\SysWOW64\msltus35.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2228
    • C:\Windows\syswow64\MsiExec.exe
      "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Windows\SysWOW64\msexcl35.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2856
    • C:\Windows\syswow64\MsiExec.exe
      "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Windows\SysWOW64\mstext35.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:4008
    • C:\Windows\syswow64\MsiExec.exe
      "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Windows\SysWOW64\mspdox35.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:4556
    • C:\Windows\syswow64\MsiExec.exe
      "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Windows\SysWOW64\Msxbse35.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1460
    • C:\Windows\syswow64\MsiExec.exe
      "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Windows\SysWOW64\Msrd2x35.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:5076
    • C:\Windows\syswow64\MsiExec.exe
      "C:\Windows\syswow64\MsiExec.exe" /Y "C:\Windows\SysWOW64\msjet35.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:488
    • C:\Program Files (x86)\Hanover Displays\Helen\dlls\signEmulator.exe
      "C:\Program Files (x86)\Hanover Displays\Helen\dlls\signEmulator.exe" /REGSERVER
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1928
    • C:\Program Files (x86)\Hanover Displays\Helen\Clean_Up.exe
      "C:\Program Files (x86)\Hanover Displays\Helen\Clean_Up.exe" /Commit
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2036
    • C:\Program Files (x86)\Hanover Displays\Helen\Custom.exe
      "C:\Program Files (x86)\Hanover Displays\Helen\Custom.exe" C:\Users\Admin\AppData\Local\Temp\
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2364
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:3932
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4576
    • C:\Program Files (x86)\Hanover Displays\Helen\HELEN.exe
      "C:\Program Files (x86)\Hanover Displays\Helen\HELEN.exe"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4824
    • C:\Program Files (x86)\Hanover Displays\Helen\HELEN.exe
      "C:\Program Files (x86)\Hanover Displays\Helen\HELEN.exe"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:220

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e586bb6.rbs

          • Path C:\Config.Msi\e586bb6.rbs
          • Size 665KB
          • SHA256 7a0f3d7b691c5fd491c1f9fafb5aec358245e36706184ef8e818dac0441def13
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Dao2535.tlb

          • Path C:\Program Files (x86)\Common Files\Microsoft Shared\DAO\Dao2535.tlb
          • Size 71KB
          • SHA256 6c6cfb4e9a8dc9a0e65630a6718a87d6e3f962d87f4836845d8023fbf87f640c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Dao350.dll

          • Path C:\Program Files (x86)\Common Files\Microsoft Shared\DAO\Dao350.dll
          • Size 556KB
          • SHA256 a4b20735be317a924d2e36707baaf911fbae890ca53c5044fb506f15d33bcb6d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Clean_Up.exe

          • Path C:\Program Files (x86)\Hanover Displays\Helen\Clean_Up.exe
          • Size 20KB
          • SHA256 790dffd801180abededecaf0f554fb3899240c7f38e8351b00de5714ddcb79e4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Custom.exe

          • Path C:\Program Files (x86)\Hanover Displays\Helen\Custom.exe
          • Size 156KB
          • SHA256 64a829d34ca28b95370fa33a7f3cc7c2ad7b2088018823a35e31683f7f036f16
          • MD5 SHA1 SHA512 SSDEEP TLSH

          zlib1.dll

          • Path C:\Program Files (x86)\Hanover Displays\Helen\Dlls\zlib1.dll
          • Size 72KB
          • SHA256 808a8fd7248dcf522602e79591371dfea79160329c486e28ee7e10f0fbba3b0e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          HELEN.exe

          • Path C:\Program Files (x86)\Hanover Displays\Helen\HELEN.exe
          • Size 3.5MB
          • SHA256 0aab72cf569cdff78011f0fe157c15fb200587003de279c33d87975426366775
          • MD5 SHA1 SHA512 SSDEEP TLSH

          H_USA.SPL

          • Path C:\Program Files (x86)\Hanover Displays\Helen\H_USA.SPL
          • Size 17KB
          • SHA256 2da8f2a32f448d6c6fa0f6b2cb029eab441032fc05d6a3540f4a72da14492f56
          • MD5 SHA1 SHA512 SSDEEP TLSH

          HanoverLang.dll

          • Path C:\Program Files (x86)\Hanover Displays\Helen\HanoverLang.dll
          • Size 60KB
          • SHA256 ed04695b8dcbf26c1df0133f4d905d975799f54404523cd343b2df96233465ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          SendWrap.dll

          • Path C:\Program Files (x86)\Hanover Displays\Helen\SendWrap.dll
          • Size 254KB
          • SHA256 4078e36e25c0562699099ac4df7ef53444f1df0c1233be8a651f553430310b24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CGZipLibrary.dll

          • Path C:\Program Files (x86)\Hanover Displays\Helen\dlls\CGZipLibrary.dll
          • Size 56KB
          • SHA256 579f192908447e14b7bae5fc904896e122bd86fed6a35b33eb6ab54008494da9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          signEmulator.exe

          • Path C:\Program Files (x86)\Hanover Displays\Helen\dlls\signEmulator.exe
          • Size 180KB
          • SHA256 df5cec9bac708bc284185579fe93541c814f8f718c6d7cbfa33268ed131f7f67
          • MD5 SHA1 SHA512 SSDEEP TLSH

          language.ini

          • Path C:\Program Files (x86)\Hanover Displays\Helen\language.ini
          • Size 210KB
          • SHA256 0f1695330a3e0a8024e60a75a0b7db938b934dc63911bd0ddcc97518c95ff612
          • MD5 SHA1 SHA512 SSDEEP TLSH

          helen.ini

          • Path C:\ProgramData\Hanover Displays\Helen\helen.ini
          • Size 18KB
          • SHA256 ef8d0ad0a3fded9bf6da558f51e318bab441250e88e928e2a2574e663f0496b6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e586bb7.msi

          • Path C:\Windows\Installer\e586bb7.msi
          • Size 19.9MB
          • SHA256 aa722e8fcb143df006d87e43c2910ee993352a3973a1b8190f0d405a97f44f71
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _A348C22EAFAB81D2B0CD7F.exe

          • Path C:\Windows\Installer\{9A305274-D1C7-4A4E-B1DD-9127BAE447FA}\_A348C22EAFAB81D2B0CD7F.exe
          • Size 3KB
          • SHA256 bcbc27e70a92c2ff2bd5257d5ca2acfe010d7c0f9a13ca0a9fcf40ee7c6b2ca1
          • MD5 SHA1 SHA512 TLSH

          MSJINT35.DLL

          • Path C:\Windows\SysWOW64\MSJINT35.DLL
          • Size 120KB
          • SHA256 3016d572ea5e695b52b1759432dd30b7a9cbc2b53ac42e8c7735854b464e7d34
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Msrd2x35.dll

          • Path C:\Windows\SysWOW64\Msrd2x35.dll
          • Size 246KB
          • SHA256 0a39237f27e801e87ae7d172c1c77bf6032cb30443e3b72111fbb6de78cef3fb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Msxbse35.dll

          • Path C:\Windows\SysWOW64\Msxbse35.dll
          • Size 280KB
          • SHA256 37eba642c286206c84e7763c6da1a691dad67a33d0774d52cf517826f6ac971c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          UniSuiteFree.ocx

          • Path C:\Windows\SysWOW64\UniSuiteFree.ocx
          • Size 460KB
          • SHA256 cac7b6c92ffe498e583d472f3d95326c74552cba5a16455fc6c3885641d7ac16
          • MD5 SHA1 SHA512 SSDEEP TLSH

          comctl32.ocx

          • Path C:\Windows\SysWOW64\comctl32.ocx
          • Size 595KB
          • SHA256 a071a89ca5f35ff51a5631b7ea7aa882eee1e8787640ab2e0c1f192f677ec443
          • MD5 SHA1 SHA512 SSDEEP TLSH

          comdlg32.ocx

          • Path C:\Windows\SysWOW64\comdlg32.ocx
          • Size 149KB
          • SHA256 e32d8bbe8e6985726742b496520fa47827f3b428648fa1bc34ecffdd9bdac240
          • MD5 SHA1 SHA512 SSDEEP TLSH

          mscomm32.ocx

          • Path C:\Windows\SysWOW64\mscomm32.ocx
          • Size 103KB
          • SHA256 b3c7d7334d4329b8d28b8fd5ea62231a066383b113d5e9901cb80dcaf25a43ee
          • MD5 SHA1 SHA512 SSDEEP TLSH

          msexcl35.dll

          • Path C:\Windows\SysWOW64\msexcl35.dll
          • Size 246KB
          • SHA256 ae1b44a86bc9666e65921f1cb6f85a49fac774e7249101a5cf2081d1d76098ce
          • MD5 SHA1 SHA512 SSDEEP TLSH

          msflxgrd.ocx

          • Path C:\Windows\SysWOW64\msflxgrd.ocx
          • Size 254KB
          • SHA256 36464966fbf46136ce0746c8cf419ca31360f81f06744e10d066441bc0ad5538
          • MD5 SHA1 SHA512 SSDEEP TLSH

          msjet35.dll

          • Path C:\Windows\SysWOW64\msjet35.dll
          • Size 1.0MB
          • SHA256 91dc7e10f4f97c0046b4b91b04b5195b95f3f0fd36260fa6433ef2ef623cb0dc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          msltus35.dll

          • Path C:\Windows\SysWOW64\msltus35.dll
          • Size 164KB
          • SHA256 e8c87e978a87246a32693f83027488ea204b7c6182bd80a9156bb60709276de7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          msmapi32.ocx

          • Path C:\Windows\SysWOW64\msmapi32.ocx
          • Size 134KB
          • SHA256 31e89efa4f043a7e937237b31036f00da00c2a1a771b88dd6c4db115d6192dcb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          mspdox35.dll

          • Path C:\Windows\SysWOW64\mspdox35.dll
          • Size 244KB
          • SHA256 b7bd9fb77332b113dc615a307f24d10df999860220b0b822e21c43e6990c51eb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          mstext35.dll

          • Path C:\Windows\SysWOW64\mstext35.dll
          • Size 162KB
          • SHA256 ae8f54c2fd76b33803c4877eaab73e133469b34436808ec6a8185616b8ff98a2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 3927498a14d036a61057270f9e7f480da108054e4fd0a1494200c5059c1aaafa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {117ba27c-d81b-4043-9a10-69d053e30aa6}_OnDiskSnapshotProp

          • Path \??\Volume{0dc89376-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{117ba27c-d81b-4043-9a10-69d053e30aa6}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 5caaad62c2e66204b8e0d2993acd0eb1642fe773c4841932fd5e738e0d17488e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/220-272-0x0000000002590000-0x00000000025A2000-memory.dmp

          memory/220-273-0x0000000021C10000-0x0000000021C2E000-memory.dmp

          memory/220-269-0x0000000000AB0000-0x0000000000AC1000-memory.dmp

          memory/1908-221-0x000001A37EDB0000-0x000001A37EE2B000-memory.dmp

          memory/1908-232-0x000001A37ED30000-0x000001A37EDAC000-memory.dmp

          memory/1908-220-0x000001A37ED30000-0x000001A37EDAC000-memory.dmp

          memory/1908-233-0x000001A37EDB0000-0x000001A37EE2B000-memory.dmp

          memory/4824-257-0x0000000021C10000-0x0000000021C2E000-memory.dmp

          memory/4824-262-0x0000000021D70000-0x0000000021D96000-memory.dmp

          memory/4824-248-0x0000000002E00000-0x0000000002E12000-memory.dmp

          memory/4824-241-0x00000000008D0000-0x00000000008E1000-memory.dmp