Analysis

  • max time kernel
    599s
  • max time network
    555s
  • 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, 15:27

General

  • Target
    ISLC v1.0.4.8_setup.exe
  • Size 1.2MB
  • Sample261014-svsapsgg52
  • SHA256 6292d1c55f671aef93c4e8e2df554753e7457b361771844fe92a812801956e3c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 29 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 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 1 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 62 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 40 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 29 IoCs
  • Suspicious use of FindShellTrayWindow 56 IoCs
  • Suspicious use of SendNotifyMessage 45 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 2 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\ISLC v1.0.4.8_setup.exe
    "C:\Users\Admin\AppData\Local\Temp\ISLC v1.0.4.8_setup.exe"
    1⤵
    • Drops file in Program Files directory
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:6080
    • C:\Program Files\ISLC\Intelligent standby list cleaner ISLC.exe
      "C:\Program Files\ISLC\Intelligent standby list cleaner ISLC.exe"
      2⤵
      • Drops file in Program Files directory
      • Executes dropped EXE
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2704
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:5524
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2604
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Enumerates connected drives
        • Checks SCSI registry key(s)
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:4644
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4016
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3976

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          ISLC.Core.dll

          • Path C:\Program Files\ISLC\ISLC.Core.dll
          • Size 48KB
          • SHA256 11dc5458940033634e40b855ec117a07edadf78d3c3fe2aca989098a46c590ac
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Intelligent standby list cleaner ISLC.exe

          • Path C:\Program Files\ISLC\Intelligent standby list cleaner ISLC.exe
          • Size 1.1MB
          • SHA256 11e4ed0b322adced3214c5a73ca1e807140341be6327b2a47a4c52434e73322f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          prep_Activatable Class_Hermes_perf.cache

          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 607B
          • SHA256 be6b74e52e5eef1f1c27c0976bf3bf1bfa99958c00bbef2898a602f691be6dae
          • MD5 SHA1 SHA512 TLSH

          prep_Activatable Class_Hermes_perf.cache

          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 599B
          • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
          • MD5 SHA1 SHA512 TLSH

          LangDLL.dll

          • Path C:\Users\Admin\AppData\Local\Temp\nsr7A8.tmp\LangDLL.dll
          • Size 5KB
          • SHA256 760df89c2341f9c39c0250c283cb9caad185244fd6b76e8157cdf49928dc1d8e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          System.dll

          • Path C:\Users\Admin\AppData\Local\Temp\nsr7A8.tmp\System.dll
          • Size 12KB
          • SHA256 996645d7f16a6294babb6da83478062aed7b72318d7a51b66e90ab5d3edc51a5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          modern-wizard.bmp

          • Path C:\Users\Admin\AppData\Local\Temp\nsr7A8.tmp\modern-wizard.bmp
          • Size 25KB
          • SHA256 3ad2dc318056d0a2024af1804ea741146cfc18cc404649a44610cbf8b2056cf2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          nsDialogs.dll

          • Path C:\Users\Admin\AppData\Local\Temp\nsr7A8.tmp\nsDialogs.dll
          • Size 9KB
          • SHA256 715a9b58de0995d1a08384c522ad9af210e2791aaf8e87a6c07bfe72ebfd2cb5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ISLC.lnk

          • Path C:\Users\Admin\Desktop\ISLC.lnk
          • Size 973B
          • SHA256 dddde3ab0ad3c602fd5741ea3446521480bfc1845e62a406f5e50d9a43dcfb12
          • MD5 SHA1 SHA512 TLSH

          memory/2704-116-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-118-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-95-0x00000200F5AF0000-0x00000200F5BA2000-memory.dmp

          memory/2704-96-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-97-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-107-0x00000200F5C00000-0x00000200F5C08000-memory.dmp

          memory/2704-108-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-110-0x00000200F6B00000-0x00000200F6B0E000-memory.dmp

          memory/2704-109-0x00000200F9820000-0x00000200F985E000-memory.dmp

          memory/2704-111-0x00000200F9740000-0x00000200F9762000-memory.dmp

          memory/2704-92-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-117-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-112-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-94-0x00000200F3900000-0x00000200F3910000-memory.dmp

          memory/2704-119-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-120-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-91-0x00007FFD5DCC0000-0x00007FFD5E664000-memory.dmp

          memory/2704-90-0x00000200F3370000-0x00000200F3494000-memory.dmp

          memory/2704-89-0x00007FFD5DE4F000-0x00007FFD5DE50000-memory.dmp

          memory/3976-319-0x00000149644E0000-0x000001496477E000-memory.dmp

          memory/4016-142-0x0000020F801E0000-0x0000020F802E0000-memory.dmp

          memory/4016-172-0x0000020F84380000-0x0000020F843A0000-memory.dmp

          memory/4016-188-0x0000020F94880000-0x0000020F948A0000-memory.dmp

          memory/4016-155-0x0000020F94460000-0x0000020F94560000-memory.dmp

          memory/4016-153-0x0000020F81FD0000-0x0000020F81FF0000-memory.dmp

          memory/4016-144-0x0000020F801E0000-0x0000020F802E0000-memory.dmp

          memory/4016-318-0x0000020F98100000-0x0000020F9839E000-memory.dmp