Analysis

  • max time kernel
    142s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-02-2023 09:22

General

  • Target

    8X/MEXCGBL_COC_JAN23(ZH-CN).pdf.exe

  • Size

    3.2MB

  • MD5

    7cb20a78a093bc41d110dbaf57fcd296

  • SHA1

    a0894924c96a58f6a1e187d4df68a47716fdf94f

  • SHA256

    31430b192bffe611f9c0699ea7b637fbbc0cc1fb58349aab32fa0e1d9b33bc46

  • SHA512

    36b805d9eadfb4730dadecf18685f7e1b0c2ee9b990f44f1d16b9367ff76e3475a67595f32cf7848b361dbc2c1527959318d8462e7aed31b92154ef518a24dcc

  • SSDEEP

    24576:rcqJge1JYGhCP3dbTb2XShCFVshuhBcomEl+11spLYx9pYH5SoqhkE2:0yXALoh+QYQH5Soqhk

Score
10/10

Malware Config

Signatures

  • ParallaxRat

    ParallaxRat is a multipurpose RAT written in MASM.

  • ParallaxRat payload 2 IoCs

    Detects payload of Parallax Rat, a small portable Rat usually digitally signed with a Sectigo certificate.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 62 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2932
    • C:\Users\Admin\AppData\Local\Temp\8X\MEXCGBL_COC_JAN23(ZH-CN).pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\8X\MEXCGBL_COC_JAN23(ZH-CN).pdf.exe"
      2⤵
      • Checks computer location settings
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1992
      • 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\Local\Temp\jHBHF.pdf"
        3⤵
        • Checks processor information in registry
        • Modifies Internet Explorer settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3676
        • 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
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4792
          • 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=35E0233165D7426FD79D1C8102C86A77 --mojo-platform-channel-handle=1728 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
            5⤵
              PID:3360
            • 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=EF3AA4D16EB83F0EBFA48D96F36213FB --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=1 --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=EF3AA4D16EB83F0EBFA48D96F36213FB --renderer-client-id=2 --mojo-platform-channel-handle=1740 --allow-no-sandbox-job /prefetch:1
              5⤵
                PID:892
              • 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=739BB94A99FE8AD40548B692B578362F --mojo-platform-channel-handle=2156 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                5⤵
                  PID:5072
                • 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=9A11B4E5EBB426CB49A0B40FB3EB73CF --mojo-platform-channel-handle=1892 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                  5⤵
                    PID:4600
                  • 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=587961553DD765E2321C0B9DED795B5C --mojo-platform-channel-handle=1920 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
                    5⤵
                      PID:4736
            • C:\Windows\SysWOW64\DllHost.exe
              C:\Windows\SysWOW64\DllHost.exe /Processid:{3AD05575-8857-4850-9277-11B85BDB8E09}
              1⤵
              • Drops startup file
              PID:3560
            • C:\Windows\System32\CompPkgSrv.exe
              C:\Windows\System32\CompPkgSrv.exe -Embedding
              1⤵
                PID:3548

              Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Users\Admin\AppData\Local\Temp\jHBHF.pdf

                Filesize

                99KB

                MD5

                6bd88fa6432b67bd6cd4edfdbe39e677

                SHA1

                f047426ffbfcb49df3f8c25bebbf48e4f4e2c97f

                SHA256

                889e55a3dadee201302c568cbaf0f93f5d78fe89f9a532d36c5c3797da66e667

                SHA512

                4c89e5c54f79133de9dee00331f439b430653ed6c9bfb11786097d4881fca82781800545171f26ea9e12a1863535293b7d4b59d3352a9f25f3ae2942ec534238

              • memory/1992-156-0x0000000000400000-0x0000000000739000-memory.dmp

                Filesize

                3.2MB

              • memory/1992-133-0x00000000024B0000-0x000000000252B000-memory.dmp

                Filesize

                492KB

              • memory/1992-135-0x0000000002720000-0x00000000028C3000-memory.dmp

                Filesize

                1.6MB

              • memory/1992-136-0x0000000000400000-0x0000000000739000-memory.dmp

                Filesize

                3.2MB

              • memory/1992-132-0x0000000000400000-0x0000000000739000-memory.dmp

                Filesize

                3.2MB

              • memory/1992-157-0x00000000024B0000-0x000000000252B000-memory.dmp

                Filesize

                492KB