Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    12/08/2026, 12:30

General

  • Target
    UnknownChatSetup.exe
  • Size 5.9MB
  • Sample260812-pptpsscf43
  • SHA256 6cd4000a83591eee1bf8d932f720f273f70d3e0409e69d32f6beb031ef9fe64d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Network Share Discovery 1 TTPs

    Attempt to gather information on host network.

  • Discovers running processes 1 TTPs 1 IoCs

    Running process information can be used to identify security tools or plan follow-on actions.

  • Drops file in Program Files directory 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • 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.

  • Modifies trusted root certificate store through registry 1 TTPs 2 IoCs

    A root certificate was added, modified, or removed in the trusted certificate store registry paths.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 8 IoCs
  • Modifies registry key 1 TTPs 4 IoCs
  • Modifies system certificate store 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\UnknownChatSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\UnknownChatSetup.exe"
    1⤵
    • Drops file in Program Files directory
    • Modifies trusted root certificate store through registry
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1016
    • C:\Windows\system32\tasklist.exe
      tasklist /FI "IMAGENAME eq UnknownChat.exe"
      2⤵
      • Discovers running processes
      • Suspicious use of AdjustPrivilegeToken
      PID:2256
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -NoProfile -ExecutionPolicy Bypass -Command "$w = New-Object -ComObject WScript.Shell foreach ($dir in @(\"$env:PUBLIC\Desktop\", \"$env:ProgramData\Microsoft\Windows\Start Menu\Programs\")) { if (Test-Path $dir) { $s = $w.CreateShortcut((Join-Path $dir ($env:UC_NAME + '.lnk'))) $s.TargetPath = $env:UC_TARGET $s.WorkingDirectory = $env:UC_DIR $s.IconLocation = $env:UC_TARGET + ',0' $s.Description = 'Unknown Chat' $s.Save() } }"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3500
    • C:\Windows\system32\reg.exe
      reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\UnknownChat /f /v DisplayName /t REG_SZ /d "Unknown Chat"
      2⤵
      • Modifies registry key
      PID:884
    • C:\Windows\system32\reg.exe
      reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\UnknownChat /f /v InstallLocation /t REG_SZ /d "C:\Program Files (x86)\Unknown Chat"
      2⤵
      • Modifies registry key
      PID:840
    • C:\Windows\system32\reg.exe
      reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\UnknownChat /f /v DisplayIcon /t REG_SZ /d "C:\Program Files (x86)\Unknown Chat\UnknownChat.exe"
      2⤵
      • Modifies registry key
      PID:1808
    • C:\Windows\system32\reg.exe
      reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\UnknownChat /f /v Publisher /t REG_SZ /d "Unknown Chat"
      2⤵
      • Modifies registry key
      PID:2200
    • C:\Windows\system32\cmd.exe
      cmd /C start "" "C:\Program Files (x86)\Unknown Chat\UnknownChat.exe"
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:2128
      • C:\Program Files (x86)\Unknown Chat\UnknownChat.exe
        "C:\Program Files (x86)\Unknown Chat\UnknownChat.exe"
        3⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:4840
        • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
          "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --embedded-browser-webview=1 --webview-exe-name=UnknownChat.exe --webview-exe-version=1.0.0 --user-data-dir="C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView" --noerrdialogs --embedded-browser-webview-dpi-awareness=2 --disable-features=msSmartScreenProtection --mojo-named-platform-channel-pipe=4840.1544.9691568640244565781
          4⤵
          • Enumerates system info in registry
          • Modifies data under HKEY_USERS
          • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
          • Suspicious use of WriteProcessMemory
          PID:2196
          • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
            "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=crashpad-handler --user-data-dir=C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Crashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=132.0.6834.160 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --annotation=plat=Win64 "--annotation=prod=Edge WebView2" --annotation=ver=132.0.2957.140 --initial-client-data=0x164,0x168,0x16c,0x140,0x174,0x7ff95afeb078,0x7ff95afeb084,0x7ff95afeb090
            5⤵
              PID:4856
            • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
              "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=gpu-process --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView" --webview-exe-name=UnknownChat.exe --webview-exe-version=1.0.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --always-read-main-dll --field-trial-handle=1720,i,14950234968879254612,1156456237028836956,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=1716 /prefetch:2
              5⤵
                PID:1536
              • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
                "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView" --webview-exe-name=UnknownChat.exe --webview-exe-version=1.0.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=2036,i,14950234968879254612,1156456237028836956,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=2040 /prefetch:3
                5⤵
                  PID:1760
                • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
                  "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView" --webview-exe-name=UnknownChat.exe --webview-exe-version=1.0.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=2248,i,14950234968879254612,1156456237028836956,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=2372 /prefetch:8
                  5⤵
                    PID:1336
                  • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
                    "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=renderer --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView" --webview-exe-name=UnknownChat.exe --webview-exe-version=1.0.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --js-flags="--harmony-weak-refs-with-cleanup-some --expose-gc --ms-user-locale=" --always-read-main-dll --field-trial-handle=3648,i,14950234968879254612,1156456237028836956,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=3652 /prefetch:1
                    5⤵
                      PID:3380
                    • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
                      "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView" --webview-exe-name=UnknownChat.exe --webview-exe-version=1.0.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=4584,i,14950234968879254612,1156456237028836956,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=4540 /prefetch:8
                      5⤵
                        PID:2112
                      • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
                        "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=gpu-process --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=5140 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView" --webview-exe-name=UnknownChat.exe --webview-exe-version=1.0.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --gpu-preferences=UAAAAAAAAADoAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAABCAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --always-read-main-dll --field-trial-handle=4688,i,14950234968879254612,1156456237028836956,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=4708 /prefetch:8
                        5⤵
                          PID:2308

                Network

                      MITRE ATT&CK Enterprise v16

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      UnknownChat.exe

                      • Path C:\Program Files (x86)\Unknown Chat\UnknownChat.exe
                      • Size 11.4MB
                      • SHA256 ad8e5cf0023fc7d96283a170f0ec48ef0756cf0a1d820eff04663c00e7bcbacb
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      __PSScriptPolicyTest_iw54kt3f.02u.ps1

                      • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iw54kt3f.02u.ps1
                      • Size 60B
                      • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                      • MD5 SHA1 SHA512 TLSH

                      settings.dat

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Crashpad\settings.dat
                      • Size 280B
                      • SHA256 d3d9095b7dbe966683f808f53db40ef58b21b5b621fbe4e2063e12036fd23a33
                      • MD5 SHA1 SHA512 TLSH

                      settings.dat

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Crashpad\settings.dat
                      • Size 280B
                      • SHA256 8eaaee52337aca9d2c5f98a0c72111867860a71ce9f81939be4052429505ce7a
                      • MD5 SHA1 SHA512 TLSH

                      throttle_store.dat

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Crashpad\throttle_store.dat
                      • Size 20B
                      • SHA256 41c91a9c93d76295746a149dce7ebb3b9ee2cb551d84365fff108e59a61cc304
                      • MD5 SHA1 SHA512

                      data_0

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\DawnWebGPUCache\data_0
                      • Size 8KB
                      • SHA256 d6a5fe39cd672781b256e0e3102f7022635f1d4bb7cfcc90a80fffe4d0f3877e
                      • MD5 SHA1 SHA512 SSDEEP

                      data_1

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\DawnWebGPUCache\data_1
                      • Size 264KB
                      • SHA256 902f30c1fb0597d0734bc34b979ec5d131f8f39a4b71b338083821216ec8d61b
                      • MD5 SHA1 SHA512 SSDEEP

                      data_2

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\DawnWebGPUCache\data_2
                      • Size 8KB
                      • SHA256 ec1702806f4cc7c42a82fc2b38e89835fde7c64bb32060e0823c9077ca92efb7
                      • MD5 SHA1 SHA512 SSDEEP

                      data_3

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\DawnWebGPUCache\data_3
                      • Size 8KB
                      • SHA256 e09f42c398d688dce168570291f1f92d079987deda3099a34adb9e8c0522b30c
                      • MD5 SHA1 SHA512 SSDEEP

                      MANIFEST-000001

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\Extension Rules\MANIFEST-000001
                      • Size 41B
                      • SHA256 f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4
                      • MD5 SHA1 SHA512

                      Network Persistent State

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\Network\Network Persistent State
                      • Size 111B
                      • SHA256 5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026
                      • MD5 SHA1 SHA512 TLSH

                      Network Persistent State~RFe595a4b.TMP

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\Network\Network Persistent State~RFe595a4b.TMP
                      • Size 59B
                      • SHA256 226eec4486509917aa336afebd6ff65777b75b65f1fb06891d2a857a9421a974
                      • MD5 SHA1 SHA512 TLSH

                      SCT Auditing Pending Reports

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\Network\SCT Auditing Pending Reports
                      • Size 2B
                      • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                      • MD5 SHA1 SHA512

                      Preferences

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\Preferences
                      • Size 6KB
                      • SHA256 989a7cbbf372d2c093c7f633f200b559935903a3557ed5eee33fee12abac7036
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      Preferences~RFe58d3c6.TMP

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\Preferences~RFe58d3c6.TMP
                      • Size 5KB
                      • SHA256 238b8bb7cb496b4d4121744288514b38f41ed743cabda0c66aeb63a19298bbe1
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      CURRENT

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Default\Sync Data\LevelDB\CURRENT
                      • Size 16B
                      • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                      • MD5 SHA1 SHA512

                      Local State

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Local State
                      • Size 1KB
                      • SHA256 bda8746b1a19b355e6b2a22b5df9d85cd982a6e43062038fb8594f9b77de52e2
                      • MD5 SHA1 SHA512 TLSH

                      Local State

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Local State
                      • Size 2KB
                      • SHA256 460e6b50ebad76f354a0952c5147ec2ebb9d3937bd9c99f0270eea7f97352ee4
                      • MD5 SHA1 SHA512 TLSH

                      Local State

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Local State
                      • Size 3KB
                      • SHA256 ef3f3bea983f5447737ab679834c3b51f50a3559940e5b0fc7781ed748666ab4
                      • MD5 SHA1 SHA512 TLSH

                      Local State

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Local State
                      • Size 16KB
                      • SHA256 e46d255b6d14e35b8f49b8e983929da8d0cb275fe8f60efc085867249fdcf1d6
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      Local State~RFe58336f.TMP

                      • Path C:\Users\Admin\AppData\Roaming\UnknownChat.exe\EBWebView\Local State~RFe58336f.TMP
                      • Size 1KB
                      • SHA256 c65798c36a8db87c9c201b5c83e0ed026b081fbea5d814feb7dd776d2c400123
                      • MD5 SHA1 SHA512 TLSH

                      memory/1536-45-0x00007FF977790000-0x00007FF977791000-memory.dmp

                      memory/3380-162-0x00007FF977790000-0x00007FF977791000-memory.dmp

                      memory/3500-3-0x000001A1A95A0000-0x000001A1A95B0000-memory.dmp

                      memory/3500-4-0x000001A1A9560000-0x000001A1A9582000-memory.dmp

                      memory/3500-2-0x000001A1A95A0000-0x000001A1A95B0000-memory.dmp