Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    26/08/2026, 21:07

General

  • Target
    frpc.exe
  • Size 402KB
  • Sample260826-zybwfswfnd
  • SHA256 30892007b6929ea5a77f2628d71aeee05fa0c070469bf4395aa520adefcff429
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Looks up external IP address via web service 1 TTPs 5 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Costura .NET executable packer 2 IoCs

    Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.

  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Time Discovery 1 TTPs 1 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 9 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 34 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 16 IoCs
  • Suspicious use of WriteProcessMemory 37 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\frpc.exe
    "C:\Users\Admin\AppData\Local\Temp\frpc.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1144
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" netsh advfirewall firewall add rule name="THm~tn8ktmvztW" dir=in action=allow program="C:\Program Files\Search.exe" enable=yes & exit
      2⤵
        PID:4800
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "ShellHost" /tr "C:\Program Files\Search.exe" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:1576
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 1 /tn "ShellHost" /tr "C:\Program Files\Search.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:816
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "CookieManager" /tr "C:\Windows\Searcher.exe" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3752
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "CookieManager" /tr "C:\Windows\Searcher.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:5992
      • C:\Program Files\Search.exe
        "C:\Program Files\Search.exe"
        2⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:3152
    • C:\Windows\Searcher.exe
      C:\Windows\Searcher.exe
      1⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:4148
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      1⤵
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3280
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=140.0.7339.81 --initial-client-data=0x128,0x12c,0x130,0x104,0x134,0x7ff866d4c728,0x7ff866d4c734,0x7ff866d4c740
        2⤵
          PID:912
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-pre-read-main-dll --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADgAAAIAAAAAAAAAAAAAGAAAQAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --metrics-shmem-handle=1656,i,2969130466407726329,4177403407950618986,262144 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=1820 /prefetch:2
          2⤵
            PID:1868
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=2168,i,15302574919264132651,1933636268851895190,524288 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=2224 /prefetch:11
            2⤵
            • System Time Discovery
            PID:1368
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=2324,i,534176404424285632,9641615650719508747,524288 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=2512 /prefetch:13
            2⤵
              PID:4936
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --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=6 --metrics-shmem-handle=3236,i,3451655684850416626,10315994990270048857,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=3452 /prefetch:1
              2⤵
                PID:1188
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --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 --metrics-shmem-handle=3300,i,13773529142091335002,4961306606257701815,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=3472 /prefetch:1
                2⤵
                  PID:1372
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --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=7 --metrics-shmem-handle=4588,i,15300898888533583207,7861808406997090568,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=4436 /prefetch:1
                  2⤵
                    PID:3068
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=4876,i,9894396050652093841,2615218407016589366,524288 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=4884 /prefetch:14
                    2⤵
                      PID:2388
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=5368,i,2263549984492539101,7614057866080994614,524288 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=5372 /prefetch:14
                      2⤵
                        PID:2532
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --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=11 --metrics-shmem-handle=5476,i,4300608251667075387,8632498171708117731,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=5508 /prefetch:1
                        2⤵
                          PID:4376
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --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=10 --metrics-shmem-handle=5464,i,12842678636593070628,7381383925027546203,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=5480 /prefetch:1
                          2⤵
                            PID:5784
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --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=12 --metrics-shmem-handle=5660,i,7859085243025329418,9154508463152376996,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=5524 /prefetch:1
                            2⤵
                              PID:5440
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --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=13 --metrics-shmem-handle=5408,i,14113171043317330445,5812612031995770751,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=5476 /prefetch:1
                              2⤵
                                PID:792
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --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=14 --metrics-shmem-handle=6088,i,2600495632602396717,8438346387410463001,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=5740 /prefetch:1
                                2⤵
                                  PID:2248
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --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=15 --metrics-shmem-handle=5456,i,8777642525894372028,10760927396179147989,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=5408 /prefetch:1
                                  2⤵
                                    PID:5640
                                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --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=16 --metrics-shmem-handle=5620,i,7969059625054311645,8224098049870639976,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=5484 /prefetch:1
                                    2⤵
                                      PID:1120
                                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --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=17 --metrics-shmem-handle=6104,i,124830170883500094,375539684617313736,2097152 --field-trial-handle=1824,i,3554726453739047156,14511520738047966739,262144 --variations-seed-version --mojo-platform-channel-handle=5456 /prefetch:1
                                      2⤵
                                        PID:2804
                                    • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                                      "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                                      1⤵
                                        PID:5864
                                      • C:\Windows\system32\svchost.exe
                                        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                                        1⤵
                                          PID:2092
                                        • C:\Windows\system32\svchost.exe
                                          C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s NgcCtnrSvc
                                          1⤵
                                          • Modifies data under HKEY_USERS
                                          PID:1960

                                        Network

                                              MITRE ATT&CK Enterprise v16

                                              Replay Monitor

                                              Loading Replay Monitor...

                                              Downloads

                                              Search.exe

                                              • Path C:\Program Files\Search.exe
                                              • Size 402KB
                                              • SHA256 30892007b6929ea5a77f2628d71aeee05fa0c070469bf4395aa520adefcff429
                                              • MD5 SHA1 SHA512 SSDEEP TLSH

                                              BookmarkMergedSurfaceOrdering

                                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BookmarkMergedSurfaceOrdering
                                              • Size 6B
                                              • SHA256 4489f9e3e454748b3521eb214e0a5694d562cff3d9ff511cb456953c8f534c00
                                              • MD5 SHA1 SHA512

                                              CURRENT

                                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GCM Store\CURRENT
                                              • Size 16B
                                              • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                                              • MD5 SHA1 SHA512

                                              SCT Auditing Pending Reports

                                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports
                                              • Size 2B
                                              • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                                              • MD5 SHA1 SHA512

                                              Secure Preferences

                                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences
                                              • Size 11KB
                                              • SHA256 390b2d3da343041b4bb8f377de5389830979e5acb4b3a32e271d3fc5ca5a1343
                                              • MD5 SHA1 SHA512 SSDEEP TLSH

                                              e1e47b4c-dbb8-45de-b8a9-3a160f11e23d.tmp

                                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\e1e47b4c-dbb8-45de-b8a9-3a160f11e23d.tmp
                                              • Size 11KB
                                              • SHA256 6119b20c24f3575f4d20bfbaafd2df8f3abea562f11d05cca20692f3236141e5
                                              • MD5 SHA1 SHA512 SSDEEP TLSH

                                              Local State

                                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                              • Size 4KB
                                              • SHA256 e722d207c121049fc072450bde661dc17fed6a733d137c19153d99bf4c042961
                                              • MD5 SHA1 SHA512 SSDEEP TLSH

                                              Local State

                                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                              • Size 129KB
                                              • SHA256 1877ddb593f91b95213c16ab119d51c6cdd5478b7515532a22df2e53e54fb448
                                              • MD5 SHA1 SHA512 SSDEEP TLSH

                                              memory/1144-5-0x00007FF862110000-0x00007FF862AB4000-memory.dmp

                                              memory/1144-86-0x00007FF862110000-0x00007FF862AB4000-memory.dmp

                                              memory/1144-93-0x00007FF862110000-0x00007FF862AB4000-memory.dmp

                                              memory/1144-0-0x000002218FD30000-0x000002218FD98000-memory.dmp

                                              memory/1144-8-0x00007FF862110000-0x00007FF862AB4000-memory.dmp

                                              memory/1144-7-0x00007FF862110000-0x00007FF862AB4000-memory.dmp

                                              memory/1144-6-0x00007FF862110000-0x00007FF862AB4000-memory.dmp

                                              memory/1144-4-0x00007FF862110000-0x00007FF862AB4000-memory.dmp

                                              memory/1144-3-0x00007FF862110000-0x00007FF862AB4000-memory.dmp

                                              memory/1144-2-0x00007FF862110000-0x00007FF862AB4000-memory.dmp

                                              memory/1144-1-0x00007FF86229F000-0x00007FF8622A0000-memory.dmp

                                              memory/3152-96-0x000001F86E660000-0x000001F86E6D8000-memory.dmp

                                              memory/3152-102-0x000001F86E640000-0x000001F86E64C000-memory.dmp

                                              memory/3152-101-0x000001F86E630000-0x000001F86E646000-memory.dmp

                                              memory/3152-100-0x000001F86E5F0000-0x000001F86E60C000-memory.dmp

                                              memory/3152-99-0x000001F870CF0000-0x000001F870D3A000-memory.dmp

                                              memory/3152-98-0x000001F86F4E0000-0x000001F86F50A000-memory.dmp

                                              memory/3152-97-0x000001F86F490000-0x000001F86F4DC000-memory.dmp