Overview

overview

8

Static

static

3

PdfcOrE8.dll

windows10-2004-x64

8

PdfcOrE8.dll

windows11-ltsc_2024-x64

8

Vat.N0.202...45.exe

windows10-2004-x64

6

Vat.N0.202...45.exe

windows11-ltsc_2024-x64

6

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    04/08/2026, 12:12

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General

  • Target
    Vat.N0.20260804142245.exe
  • Size 3.5MB
  • Sample260804-pdkyhsag57
  • SHA256 b869fbddbda07a9b4e511f533b4b7ac2a161cc88dae0519e0e55347c74db94a8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
defense_evasiondiscoveryexecution

Malware Config

Signatures

  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Looks up external IP address via web service 1 TTPs 2 IoCs

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

    discovery
  • Discovers running processes 1 TTPs 2 IoCs

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

    discovery
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Executes a command shell one-liner 1 TTPs 3 IoCs

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

    execution
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Delays execution with timeout.exe 2 IoCs
    defense_evasion
  • Kills process with taskkill 1 IoCs
    defense_evasion
  • Modifies registry class 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Vat.N0.20260804142245.exe
    "C:\Users\Admin\AppData\Local\Temp\Vat.N0.20260804142245.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2904
    • C:\Windows\SysWOW64\cmd.exe
      /c C:\Windows\System32\ComputerDefaults.exe
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2584
      • C:\Windows\SysWOW64\ComputerDefaults.exe
        C:\Windows\System32\ComputerDefaults.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5024
        • C:\ProgramData\S-1-5-21-1677827318-792020921-982757260-6653\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
          "MicrosoftEdgeComRegisterShellARM64.exe"
          4⤵
          • Enumerates connected drives
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3544
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /f /im cmd.exe
            5⤵
            • System Location Discovery: System Language Discovery
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:4616
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c start "" /B cmd /C C:\Users\Admin\AppData\Local\Temp\A18AA22EAB1E4EBAE7A.CMD
            5⤵
            • Executes a command shell one-liner
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1012
            • C:\Windows\SysWOW64\cmd.exe
              cmd /C C:\Users\Admin\AppData\Local\Temp\A18AA22EAB1E4EBAE7A.CMD
              6⤵
              • Executes a command shell one-liner
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2136
              • C:\Windows\SysWOW64\tasklist.exe
                TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                7⤵
                • Discovers running processes
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:1796
              • C:\Windows\SysWOW64\find.exe
                FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:3320
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:936
              • C:\Windows\SysWOW64\tasklist.exe
                TASKLIST /FI "IMAGENAME eq MicrosoftEdgeComRegisterShellARM64.exe" /FO CSV
                7⤵
                • Discovers running processes
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:5040
              • C:\Windows\SysWOW64\find.exe
                FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:4692
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:1888
  • C:\ProgramData\S-1-5-21-1677827318-792020921-982757260-6653\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
    C:\ProgramData\S-1-5-21-1677827318-792020921-982757260-6653\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:2704
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 1392
      2⤵
      • Program crash
      PID:3384
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2704 -ip 2704
    1⤵
      PID:2876

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          MicrosoftEdgeComRegisterShellARM64.exe
          • Path C:\ProgramData\S-1-5-21-1677827318-792020921-982757260-6653\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
          • Size 3.5MB
          • SHA256 b869fbddbda07a9b4e511f533b4b7ac2a161cc88dae0519e0e55347c74db94a8
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          PDFCore8.dll
          • Path C:\ProgramData\S-1-5-21-1677827318-792020921-982757260-6653\SystemAppData\PDFCore8.dll
          • Size 3.8MB
          • SHA256 62b4dab833c0ea54fe9d4a65ecb1e705791bfe47b61398c0ea155d2445fffce5
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          0E0EA2CD61F757CEB5BB65FC2C758BF4_59B8C30534EA03831AD62B87D9D5F56A
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\0E0EA2CD61F757CEB5BB65FC2C758BF4_59B8C30534EA03831AD62B87D9D5F56A
          • Size 727B
          • SHA256 3987e97c336d4df885da6bd99fbbedc4b0e368ccb21b8aa9cf6b358349be04bb
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          616AD1AB067CFD351D6C0EF6F3E12F40
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\616AD1AB067CFD351D6C0EF6F3E12F40
          • Size 1KB
          • SHA256 0f847033aaf27849f7a161936a76969ca174ec563b2793384cf32b9ea95e6552
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          8EC9B1D0ABBD7F98B401D425828828CE_318C19735AFB8DB0BA822A0091F55D60
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_318C19735AFB8DB0BA822A0091F55D60
          • Size 727B
          • SHA256 9ae2e1c28447bfe69ff169012d873d11a0c43001af635b114493e8177e7e9373
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 727B
          • SHA256 8d048730b983105d77a346709c2f03ca8f061c0d7c12cf101a8335751211343b
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          C8E534EE129F27D55460CE17FD628216_64A201640BD8E31E72E33FB1EBF9962D
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_64A201640BD8E31E72E33FB1EBF9962D
          • Size 727B
          • SHA256 53c60c9910c857fa3f02c1db2a222d556998d9914fb472f4e3324b39be887813
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          0E0EA2CD61F757CEB5BB65FC2C758BF4_59B8C30534EA03831AD62B87D9D5F56A
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\0E0EA2CD61F757CEB5BB65FC2C758BF4_59B8C30534EA03831AD62B87D9D5F56A
          • Size 400B
          • SHA256 18bc5ba3cc3cd5de3a3ae61d3c068c780d4f00e4f5df63a36e0bcf23d191f611
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          616AD1AB067CFD351D6C0EF6F3E12F40
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\616AD1AB067CFD351D6C0EF6F3E12F40
          • Size 252B
          • SHA256 4c147c785a580957d3fe8182cb8937734710cc31a043452295e0cfb277ea6293
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          8EC9B1D0ABBD7F98B401D425828828CE_318C19735AFB8DB0BA822A0091F55D60
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_318C19735AFB8DB0BA822A0091F55D60
          • Size 404B
          • SHA256 a9fba3a8425be32d47dddcee422a83437ff18fb0af1bbeca15178947df08cc84
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
          • Size 412B
          • SHA256 b041da14e9c8e715b27699b76fc013cd7f991ce48f36455fed2e492ef51909d9
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          C8E534EE129F27D55460CE17FD628216_64A201640BD8E31E72E33FB1EBF9962D
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_64A201640BD8E31E72E33FB1EBF9962D
          • Size 416B
          • SHA256 c639e0209c7b4ab69d24fe5466d529e4abd3f31dd19f942f1dd7f276d00b2ad0
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          A18AA22EAB1E4EBAE7A.CMD
          • Path C:\Users\Admin\AppData\Local\Temp\A18AA22EAB1E4EBAE7A.CMD
          • Size 1KB
          • SHA256 92ff0fc2400b6d6283d3d27e6fcfc4e2a907bc7d97b193dc65b63b3e6d1ea602
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/3544-39-0x0000000004970000-0x00000000049C7000-memory.dmp
          Download

          memory/3544-41-0x0000000004970000-0x00000000049C7000-memory.dmp
          Download

          memory/3544-42-0x0000000004970000-0x00000000049C7000-memory.dmp
          Download

          memory/3544-43-0x0000000004970000-0x00000000049C7000-memory.dmp
          Download

          memory/3544-44-0x0000000004970000-0x00000000049C7000-memory.dmp
          Download