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
    142s
  • max time network
    153s
  • 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

Sharing

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General

  • Target
    Vat.N0.20260804142245.exe
  • Size 3.5MB
  • Sample260804-pdk9aaag62
  • 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:4684
    • 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:3252
      • C:\Windows\SysWOW64\ComputerDefaults.exe
        C:\Windows\System32\ComputerDefaults.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3416
        • C:\ProgramData\S-1-5-21-1723148236-2569294035-282668709-1763\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:1500
          • 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:5088
          • 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:684
            • 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:2944
              • 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:1628
              • C:\Windows\SysWOW64\find.exe
                FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:4892
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:2280
              • 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:3076
              • C:\Windows\SysWOW64\find.exe
                FIND /I "MicrosoftEdgeComRegisterShellARM64.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:4512
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:3372
  • C:\ProgramData\S-1-5-21-1723148236-2569294035-282668709-1763\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
    C:\ProgramData\S-1-5-21-1723148236-2569294035-282668709-1763\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:4204
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4204 -s 636
      2⤵
      • Program crash
      PID:4612
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4204 -ip 4204
    1⤵
      PID:3792

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          MicrosoftEdgeComRegisterShellARM64.exe
          • Path C:\ProgramData\S-1-5-21-1723148236-2569294035-282668709-1763\SystemAppData\MicrosoftEdgeComRegisterShellARM64.exe
          • Size 3.5MB
          • SHA256 b869fbddbda07a9b4e511f533b4b7ac2a161cc88dae0519e0e55347c74db94a8
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          PDFCore8.dll
          • Path C:\ProgramData\S-1-5-21-1723148236-2569294035-282668709-1763\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

          BA74182F76F15A9CF514DEF352303C95
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\BA74182F76F15A9CF514DEF352303C95
          • Size 737B
          • SHA256 8e1136ed51666cc5b9f9b98847c67ce35ff60a6a54cf9a5734dc1e8defd26aa7
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          0E0EA2CD61F757CEB5BB65FC2C758BF4_59B8C30534EA03831AD62B87D9D5F56A
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\0E0EA2CD61F757CEB5BB65FC2C758BF4_59B8C30534EA03831AD62B87D9D5F56A
          • Size 400B
          • SHA256 f6b045eb25c14faf9856bf092d5c2cfa95569047604c71c5fda3b42de0b0544a
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          616AD1AB067CFD351D6C0EF6F3E12F40
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\616AD1AB067CFD351D6C0EF6F3E12F40
          • Size 252B
          • SHA256 ce15d61c804d109d5630d2a91f52d1633905749293431a3ed1e5f4ce70d529c3
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          8EC9B1D0ABBD7F98B401D425828828CE_318C19735AFB8DB0BA822A0091F55D60
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_318C19735AFB8DB0BA822A0091F55D60
          • Size 404B
          • SHA256 8b1ce75e6f526d343fc0970ff608abe2a9f5d3b41ec728a4570e9eb2dd51c967
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          BA74182F76F15A9CF514DEF352303C95
          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\BA74182F76F15A9CF514DEF352303C95
          • Size 248B
          • SHA256 03be314f3145647171f88fa26309ebe832a13825d8fdeafd8f1897a264501b4e
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          A18AA22EAB1E4EBAE7A.CMD
          • Path C:\Users\Admin\AppData\Local\Temp\A18AA22EAB1E4EBAE7A.CMD
          • Size 1KB
          • SHA256 379110f6ab25406971c919d8ae8fff3dcb42bcdf0d86761dcedd1e304fa26ac9
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/1500-35-0x00000000051B0000-0x0000000005207000-memory.dmp
          Download

          memory/1500-36-0x00000000051B0000-0x0000000005207000-memory.dmp
          Download

          memory/1500-38-0x00000000051B0000-0x0000000005207000-memory.dmp
          Download

          memory/1500-41-0x00000000051B0000-0x0000000005207000-memory.dmp
          Download

          memory/1500-40-0x00000000051B0000-0x0000000005207000-memory.dmp
          Download