Overview

overview

8

Static

static

3

SystemUpdate.exe

windows10-2004-x64

7

SystemUpdate.exe

windows11-ltsc_2024-x64

8

Analysis

  • user interaction
    yes
  • max time kernel
    300s
  • max time network
    173s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/06/2026, 11:56

Sharing

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General

  • Target
    SystemUpdate.exe
  • Size 32.4MB
  • Sample260620-n355baew7m
  • SHA256 037dbda48375f10a8ff66a0f1820d9627eea9659afbfcfb9194d4c066a8b84cb
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwarediscoveryexecutionpersistenceransomwarespywarestealer

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
  • Loads dropped DLL 60 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Contacts third-party web service commonly abused for C2 1 TTPs 11 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Enumerates processes with tasklist 1 TTPs 4 IoCs
    discovery
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Gathers system information 1 TTPs 2 IoCs

    Runs systeminfo.exe.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 52 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 46 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 13 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\SystemUpdate.exe
    "C:\Users\Admin\AppData\Local\Temp\SystemUpdate.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4192
    • C:\Users\Admin\AppData\Local\Temp\SystemUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\SystemUpdate.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:692
      • C:\Windows\SYSTEM32\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:2772
      • C:\Windows\SYSTEM32\systeminfo.exe
        systeminfo
        3⤵
        • Gathers system information
        PID:204
      • C:\Windows\SYSTEM32\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:1384
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "schtasks /query /tn "WindowsUpdateCheck""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2928
        • C:\Windows\system32\schtasks.exe
          schtasks /query /tn "WindowsUpdateCheck"
          4⤵
            PID:5900
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c "schtasks /create /tn "WindowsUpdateCheck" /tr "C:\Users\Admin\AppData\Local\Temp\SystemUpdate.exe" /sc onlogon /rl highest /f"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1548
          • C:\Windows\system32\schtasks.exe
            schtasks /create /tn "WindowsUpdateCheck" /tr "C:\Users\Admin\AppData\Local\Temp\SystemUpdate.exe" /sc onlogon /rl highest /f
            4⤵
            • Scheduled Task/Job: Scheduled Task
            PID:944
    • C:\Users\Admin\AppData\Local\Temp\SystemUpdate.exe
      C:\Users\Admin\AppData\Local\Temp\SystemUpdate.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:5056
      • C:\Users\Admin\AppData\Local\Temp\SystemUpdate.exe
        C:\Users\Admin\AppData\Local\Temp\SystemUpdate.exe
        2⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:5436
        • C:\Windows\System32\tasklist.exe
          tasklist
          3⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:1272
        • C:\Windows\System32\systeminfo.exe
          systeminfo
          3⤵
          • Gathers system information
          PID:5332
        • C:\Windows\System32\tasklist.exe
          tasklist
          3⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:5908
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3756
      • 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 behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:5680
    • 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:5172
    • 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:2160

    Network

          MITRE ATT&CK Enterprise v16

          Reconnaissance

          Resource Development

          Initial Access

          Execution

          Scheduled Task/Job

          1
          T1053

          Scheduled Task

          1
          T1053.005

          Persistence

          Boot or Logon Autostart Execution

          2
          T1547

          Active Setup

          1
          T1547.014

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Scheduled Task/Job

          1
          T1053

          Scheduled Task

          1
          T1053.005

          Privilege Escalation

          Boot or Logon Autostart Execution

          2
          T1547

          Active Setup

          1
          T1547.014

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Scheduled Task/Job

          1
          T1053

          Scheduled Task

          1
          T1053.005

          Defense Evasion

          Modify Registry

          3
          T1112

          Credential Access

          Credentials from Password Stores

          1
          T1555

          Credentials from Web Browsers

          1
          T1555.003

          Unsecured Credentials

          1
          T1552

          Credentials In Files

          1
          T1552.001

          Discovery

          Peripheral Device Discovery

          2
          T1120

          Process Discovery

          1
          T1057

          Query Registry

          3
          T1012

          System Information Discovery

          3
          T1082

          Lateral Movement

          Collection

          Data from Local System

          1
          T1005

          Command and Control

          Web Service

          1
          T1102

          Exfiltration

          Impact

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          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

          81d243bd2c585b0f4821__mypyc.cp313-win_amd64.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\81d243bd2c585b0f4821__mypyc.cp313-win_amd64.pyd
          • Size 213KB
          • SHA256 ba7fc544994f126cb7485ce52d265d2f32e93c4f1ea1fcd6fcdee3918f271979
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _imaging.cp313-win_amd64.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\PIL\_imaging.cp313-win_amd64.pyd
          • Size 2.5MB
          • SHA256 34b9fbd040c46776f343c65b9ecd252c1cf30e84def79294d7e2675feef1a363
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          VCRUNTIME140.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\VCRUNTIME140.dll
          • Size 117KB
          • SHA256 052ad6a20d375957e82aa6a3c441ea548d89be0981516ca7eb306e063d5027f4
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          VCRUNTIME140_1.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\VCRUNTIME140_1.dll
          • Size 48KB
          • SHA256 6a99bc0128e0c7d6cbbf615fcc26909565e17d4ca3451b97f8987f9c6acbc6c8
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _bz2.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_bz2.pyd
          • Size 84KB
          • SHA256 b4aa26c44a529de7129733a31b73fd74e474b9069edf02d3151d067ac5d52a5c
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _cffi_backend.cp313-win_amd64.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_cffi_backend.cp313-win_amd64.pyd
          • Size 176KB
          • SHA256 d5b09da2e726b4e90cf0edad5d2a0ec52f369dfd060e14d3807a32b2205031fa
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _ctypes.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_ctypes.pyd
          • Size 131KB
          • SHA256 69ccbfa336004742c18fba4a2d0d24aba5f5e1578983278137788166ea322a22
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _decimal.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_decimal.pyd
          • Size 280KB
          • SHA256 098b917a449a82050820fd4b36b94cff85b243af5d109fdaefc1dff05efccca2
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _hashlib.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_hashlib.pyd
          • Size 67KB
          • SHA256 1ca43d7db5e5b3d8066038ff452b09c1dd525022ad5c4447be94345705caadc8
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _lzma.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_lzma.pyd
          • Size 155KB
          • SHA256 71387e8484088f8291664312d985f42454017e1f556bd4107e2d065f19a799ec
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _queue.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_queue.pyd
          • Size 34KB
          • SHA256 f1be4ad7af2810ca957ce1bb6122ac821bb284633bdabc872e12e699f5067269
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _socket.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_socket.pyd
          • Size 84KB
          • SHA256 6050e57e93872e3cd86daeca9594362ad256a9bbe00e0549fa5988a9b43c90e3
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _sqlite3.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_sqlite3.pyd
          • Size 126KB
          • SHA256 183d02f0ce2ad03f3f101682313cd3034f6039acd7e7025f618cc27a053ec609
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _ssl.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_ssl.pyd
          • Size 177KB
          • SHA256 5f113a6b4cc933646ef69aa233da278bd311f7f04135a8ea6e1514944af3f851
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _wmi.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\_wmi.pyd
          • Size 38KB
          • SHA256 440ccba82699e5cca4975ad68fa4338d66295dbf9abf391b924ed1d22fe90857
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          base_library.zip
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\base_library.zip
          • Size 1.3MB
          • SHA256 0a19fdf10116ba4f9f3efa2e391f2de6cb0af80267f1b7f375424cd48af8ea7c
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          cacert.pem
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\certifi\cacert.pem
          • Size 233KB
          • SHA256 16be3f6feb15408195dcfe3aa1a75ef9db72f646b96ebbefdc68f56255f799f8
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          cd.cp313-win_amd64.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\charset_normalizer\cd.cp313-win_amd64.pyd
          • Size 10KB
          • SHA256 2e9f5049b3c5db7ab78c6abb94dfbbfe035ebab8f40594320f8c92221f486f24
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          _rust.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\cryptography\hazmat\bindings\_rust.pyd
          • Size 9.4MB
          • SHA256 813b101f70efb79c388239ce82ac891e195a1e19eeaeb43c32d9bf425e7b51b8
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          libcrypto-3.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\libcrypto-3.dll
          • Size 5.0MB
          • SHA256 e03dd02fdcfb791981c9962827cfcf495f2a47a514c1526efb57f847a9df514a
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          libffi-8.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\libffi-8.dll
          • Size 38KB
          • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          libssl-3.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\libssl-3.dll
          • Size 776KB
          • SHA256 1e4bc0638682bfcbb36f4465d6a2e9944d917a60f05ecc8ddf9e96847e05e13f
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          python3.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\python3.dll
          • Size 70KB
          • SHA256 f950ce3bf381d5ffae90cf63ec9c9761f1666d9a570e2f203a7f22da6f8e14f3
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          python313.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\python313.dll
          • Size 5.8MB
          • SHA256 e7119fc5892eab890d44f6df05f44d50cf8c390c35d152e589e0c35781ca8d05
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          pywintypes313.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\pywin32_system32\pywintypes313.dll
          • Size 132KB
          • SHA256 9bb6dece38380abc747dce9ba8b0834a2bec469bc942dbcc8658e30ebdfb59a4
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          select.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\select.pyd
          • Size 32KB
          • SHA256 0dc63cb35f1776d732cb3fbbbdd9e5912b29a98465d3927a8162e8475c0f6809
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          Lorem ipsum.txt
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\setuptools\_vendor\jaraco\text\Lorem ipsum.txt
          • Size 1KB
          • SHA256 37fedcffbf73c4eb9f058f47677cb33203a436ff9390e4d38a8e01c9dad28e0b
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          sqlite3.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\sqlite3.dll
          • Size 1.5MB
          • SHA256 f84cc494f7f1c816973334185384988b89300554cee6e952ba558a6dd47c7057
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          ucrtbase.dll
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\ucrtbase.dll
          • Size 1.3MB
          • SHA256 d404dc9aa843d53d7e276dd078b2cac8d7aa905e2838a1fe8385278e19ba3810
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          unicodedata.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\unicodedata.pyd
          • Size 695KB
          • SHA256 2b8c8d837e2968751a581e1c6e91447b0db672c2a1496362942df654afddc11d
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          win32api.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\win32\win32api.pyd
          • Size 132KB
          • SHA256 b80722e54741563e72e264ca33e1900ee49c927c475e54ef8f94c3eac9032465
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          win32crypt.pyd
          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41922\win32\win32crypt.pyd
          • Size 121KB
          • SHA256 f07fbdcebda155ece29f64a4ca199db544bfa1f3472661f20b569d2b56926123
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/5172-374-0x0000011F001E0000-0x0000011F002E0000-memory.dmp
          Download

          memory/5172-376-0x0000011F001E0000-0x0000011F002E0000-memory.dmp
          Download

          memory/5172-400-0x0000011F140B0000-0x0000011F140D0000-memory.dmp
          Download

          memory/5172-381-0x0000011F03D20000-0x0000011F03E20000-memory.dmp
          Download

          memory/5172-382-0x0000011F03CE0000-0x0000011F03D00000-memory.dmp
          Download

          memory/5172-380-0x0000011F03920000-0x0000011F03940000-memory.dmp
          Download

          memory/5172-375-0x0000011F001E0000-0x0000011F002E0000-memory.dmp
          Download

          memory/5680-542-0x000000000A920000-0x000000000A999000-memory.dmp
          Download