Overview

overview

6

Static

static

3

processlas...64.exe

windows10-2004-x64

4

processlas...64.exe

windows11-ltsc_2024-x64

6

$PLUGINSDIR/INetC.dll

windows10-2004-x64

3

$PLUGINSDIR/INetC.dll

windows11-ltsc_2024-x64

3

$PLUGINSDI...LL.dll

windows10-2004-x64

3

$PLUGINSDI...LL.dll

windows11-ltsc_2024-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

$PLUGINSDI...em.dll

windows11-ltsc_2024-x64

3

CPUEater.exe

windows10-2004-x64

1

CPUEater.exe

windows11-ltsc_2024-x64

1

Insights.exe

windows10-2004-x64

1

Insights.exe

windows11-ltsc_2024-x64

1

InstallHelper.exe

windows10-2004-x64

1

InstallHelper.exe

windows11-ltsc_2024-x64

1

LogViewer.exe

windows10-2004-x64

1

LogViewer.exe

windows11-ltsc_2024-x64

1

ProcessGovernor.exe

windows10-2004-x64

1

ProcessGovernor.exe

windows11-ltsc_2024-x64

1

ProcessLasso.exe

windows10-2004-x64

1

ProcessLasso.exe

windows11-ltsc_2024-x64

1

ProcessLas...er.exe

windows10-2004-x64

5

ProcessLas...er.exe

windows11-ltsc_2024-x64

6

QuickUpgrade.exe

windows10-2004-x64

4

QuickUpgrade.exe

windows11-ltsc_2024-x64

6

ThreadRacer.exe

windows10-2004-x64

1

ThreadRacer.exe

windows11-ltsc_2024-x64

6

TweakScheduler.exe

windows10-2004-x64

1

TweakScheduler.exe

windows11-ltsc_2024-x64

1

bitsumsess...nt.exe

windows10-2004-x64

1

bitsumsess...nt.exe

windows11-ltsc_2024-x64

1

pl-update.cmd

windows10-2004-x64

1

pl-update.cmd

windows11-ltsc_2024-x64

1

Analysis

  • max time kernel
    133s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/07/2026, 16:26

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General

  • Target
    QuickUpgrade.exe
  • Size 486KB
  • Sample260704-txrbvsdw9k
  • SHA256 f3033761b8fc87766f5f8b4db29712493c4eff674d8747721d84efb40ac0c1c4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
adwarediscoverypersistenceransomwarespyware

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.

    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of FindShellTrayWindow 52 IoCs
  • Suspicious use of SendNotifyMessage 42 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 4 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.

    persistence
  • Uses Volume Shadow Copy WMI provider

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

    ransomware
  • Uses Volume Shadow Copy service COM API

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\QuickUpgrade.exe
    "C:\Users\Admin\AppData\Local\Temp\QuickUpgrade.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:5652
    • C:\Users\Admin\AppData\Local\Temp\bitsum\processlasso\pl4sfx.exe
      "C:\Users\Admin\AppData\Local\Temp\bitsum\processlasso\pl4sfx.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3608
      • C:\Users\Admin\AppData\Local\Temp\PostUpdate.exe
        "C:\Users\Admin\AppData\Local\Temp\PostUpdate.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious use of WriteProcessMemory
        PID:2160
        • C:\Users\Admin\AppData\Local\Temp\processlasso.exe
          /postupdate
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks processor information in registry
          • Suspicious use of AdjustPrivilegeToken
          PID:3640
  • C:\Users\Admin\AppData\Local\Temp\bitsumsessionagent.exe
    "C:\Users\Admin\AppData\Local\Temp\bitsumsessionagent.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious behavior: GetForegroundWindowSpam
    PID:1332
  • C:\Users\Admin\AppData\Local\Temp\bitsumsessionagent.exe
    "C:\Users\Admin\AppData\Local\Temp\bitsumsessionagent.exe" ----------------------------------------------------------------
    1⤵
    • Executes dropped EXE
    PID:1980
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:6084
    • 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:1448
  • 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:4228
  • 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:2212

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

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

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

        399EE1EDC6C662444ED466CB6D0EEBE4
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\399EE1EDC6C662444ED466CB6D0EEBE4
        • Size 21KB
        • SHA256 e0d242386c2f8b1b0816744abc8e83486376e95ce62e17a3bacc0344a6669369
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        103621DE9CD5414CC2538780B4B75751
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751
        • Size 192B
        • SHA256 41e71701e66c396d45ff0892125abab4818b96b30baeaf8f10ff4f58578f4706
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        1B1495DD322A24490E2BF2FAABAE1C61
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\1B1495DD322A24490E2BF2FAABAE1C61
        • Size 192B
        • SHA256 1a8f0fdf6e461746fa09bacfea151864fa311770ec9c1fffa9496eb8e49fa165
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        22D536C4B4AD2CEF7AC6B7789FD235E3
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\22D536C4B4AD2CEF7AC6B7789FD235E3
        • Size 192B
        • SHA256 52cfbbed55519f2ed5a89c158cbd16da8929af45e6b06efe6d2767294fe42d26
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        399EE1EDC6C662444ED466CB6D0EEBE4
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\399EE1EDC6C662444ED466CB6D0EEBE4
        • Size 248B
        • SHA256 46affe079a3eed6d21ed71d6902f716ef704b3409692e842aedf4a3eaa704972
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        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 7c21835f01895c1ee4e12f81e71ef06a0f6e2b9281de493ff8ec95f913e9680d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        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
        Submit Download

        PostUpdate.exe
        • Path C:\Users\Admin\AppData\Local\Temp\PostUpdate.exe
        • Size 726KB
        • SHA256 4b354a27df2384236a5a1a8bb44251b6dd68c041c5ed12eab2581b1ab3791a30
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ProcessLasso.exe
        • Path C:\Users\Admin\AppData\Local\Temp\ProcessLasso.exe
        • Size 2.4MB
        • SHA256 bae42c6ba451adc2c206072d254416391f66429088da56b24cdcaa88f0ff2752
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        QuickUpgrade.exe.Replacement
        • Path C:\Users\Admin\AppData\Local\Temp\QuickUpgrade.exe.Replacement
        • Size 486KB
        • SHA256 f3033761b8fc87766f5f8b4db29712493c4eff674d8747721d84efb40ac0c1c4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pl4sfx.exe
        • Path C:\Users\Admin\AppData\Local\Temp\bitsum\processlasso\pl4sfx.exe
        • Size 3.1MB
        • SHA256 180613e9f1214a78bdcee39f50a0e2b66ec2b3dcda1f3801a1c90b4a8711216f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        bitsumsessionagent.exe
        • Path C:\Users\Admin\AppData\Local\Temp\bitsumsessionagent.exe
        • Size 180KB
        • SHA256 ce0d1360254dc72b49830fcdf118569b8d5e65b52758250f50222978d607a221
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pl_rsrc_temp.dll
        • Path C:\Users\Admin\AppData\Local\Temp\pl_rsrc_temp.dll
        • Size 1.9MB
        • SHA256 0174583791ccf52232dfc78a415f4b0b24aafe05efb6b391eab62ba44d7aec1a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4228-128-0x00000219801E0000-0x00000219802E0000-memory.dmp
        Download

        memory/4228-129-0x00000219801E0000-0x00000219802E0000-memory.dmp
        Download

        memory/4228-165-0x0000021981910000-0x0000021981930000-memory.dmp
        Download

        memory/4228-190-0x0000021995290000-0x00000219952B0000-memory.dmp
        Download

        memory/4228-157-0x0000021995000000-0x0000021995100000-memory.dmp
        Download

        memory/4228-156-0x0000021981CE0000-0x0000021981D00000-memory.dmp
        Download