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Analysis

  • max time kernel
    103s
  • max time network
    104s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/11/2024, 00:47

General

  • Target

    66d19a418b63a7d1fe5aedb22b4632f65588cd8b4bff4873c0a1938585009e3eN.exe

  • Size

    552KB

  • MD5

    10bbf67948e6dddb51f6f08d018c0af0

  • SHA1

    241eca0187de98f65f76253e1ea8998f5d51fbe5

  • SHA256

    66d19a418b63a7d1fe5aedb22b4632f65588cd8b4bff4873c0a1938585009e3e

  • SHA512

    f6b2b3b2e0ca98ce80a55962c6778a94d7d2d6b7f25999965fc0a466f8d095fe729fbdc346049c9d90d76212e05314d16dcd3f28066cc51b93c9ca4883cfdfd2

  • SSDEEP

    6144:I5vWMUYDhcGHAsDkeA5IvxDmUAI+K366Ujge5DAtAvKhAp081nNVjqKoeS:IxWCDhVXA5IvQ0mjgAPy6nnjqKoeS

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:7000

Mutex

4SlUuKAVMJTCYjjd

Attributes
  • Install_directory

    %AppData%

  • install_file

    pdf.exe

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 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.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\66d19a418b63a7d1fe5aedb22b4632f65588cd8b4bff4873c0a1938585009e3eN.exe
    "C:\Users\Admin\AppData\Local\Temp\66d19a418b63a7d1fe5aedb22b4632f65588cd8b4bff4873c0a1938585009e3eN.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1840
    • C:\Users\Admin\AppData\Local\Temp\StubSoftware.exe
      "C:\Users\Admin\AppData\Local\Temp\StubSoftware.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3192
      • C:\Users\Admin\AppData\Local\Temp\pdf.exe
        "C:\Users\Admin\AppData\Local\Temp\pdf.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:5088
      • 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\2024.pdf"
        3⤵
        • 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:1728
        • 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⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1960
          • 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=DD752E22924A1626F236BB93282605C2 --mojo-platform-channel-handle=1748 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2280
          • 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=6E0D247F15E453BB5367B9D6B2BB0CFC --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=6E0D247F15E453BB5367B9D6B2BB0CFC --renderer-client-id=2 --mojo-platform-channel-handle=1740 --allow-no-sandbox-job /prefetch:1
            5⤵
            • System Location Discovery: System Language Discovery
            PID:1748
          • 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=76E85C982E128FD1DC1E7368F68E3B17 --mojo-platform-channel-handle=2316 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
            5⤵
            • System Location Discovery: System Language Discovery
            PID:1480
          • 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=0030C09A7530C89754D6B4D69A817D1B --mojo-platform-channel-handle=1928 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
            5⤵
            • System Location Discovery: System Language Discovery
            PID:4444
          • 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=E8430B16919F3AD9CD2B59738B2ED20B --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=E8430B16919F3AD9CD2B59738B2ED20B --renderer-client-id=6 --mojo-platform-channel-handle=2376 --allow-no-sandbox-job /prefetch:1
            5⤵
            • System Location Discovery: System Language Discovery
            PID:1112
          • 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=D9B3A11BECE564B1C60C146D620236F8 --mojo-platform-channel-handle=2656 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
            5⤵
            • System Location Discovery: System Language Discovery
            PID:1720
  • C:\Windows\System32\CompPkgSrv.exe
    C:\Windows\System32\CompPkgSrv.exe -Embedding
    1⤵
      PID:3948

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages

      Filesize

      64KB

      MD5

      87333f6f1a1af525d1d4f30f65e72bc4

      SHA1

      3f36c77fc6f35b6748e134abd52117af04daad61

      SHA256

      debdd021d86f9b37ac1fec2965e54062e2225377c692d7dc7e24eceb10970333

      SHA512

      ef6579196e7f30bc734d84929fed8f8922ecac0d3d1b55095aff1c7893d542620ddad02eb8969379d57c4f5c4f4312834f87924f633497918586fec12e442c21

    • C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages

      Filesize

      36KB

      MD5

      b30d3becc8731792523d599d949e63f5

      SHA1

      19350257e42d7aee17fb3bf139a9d3adb330fad4

      SHA256

      b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3

      SHA512

      523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e

    • C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages

      Filesize

      56KB

      MD5

      752a1f26b18748311b691c7d8fc20633

      SHA1

      c1f8e83eebc1cc1e9b88c773338eb09ff82ab862

      SHA256

      111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131

      SHA512

      a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5

    • C:\Users\Admin\AppData\Local\Temp\2024.pdf

      Filesize

      19KB

      MD5

      1bfe03726985e5f00d6493bae4d7733e

      SHA1

      8aa97a35f4136255e515fee32a9e7494a59cf36b

      SHA256

      3d14fcb12f470412cc85d15ae4a84210c4ee5cd79455dd18000ce7ef7c3828e1

      SHA512

      6a65118e9d3da7ab65b1c2e2d8dadce2e15f5b5b35c5db934681a826486e69602532e87cf4a99154100aa63a0fb341b7fbc105a26819d506a35063d621bb0681

    • C:\Users\Admin\AppData\Local\Temp\StubSoftware.exe

      Filesize

      225KB

      MD5

      14d355e2281f4132311311fa31b84607

      SHA1

      ff44c91fde76f9d5e7482092bf9f8b45ae7bada8

      SHA256

      4620e089eccef262e3cf156e04104aa7ab5724a71e814e56113568cd0df3985e

      SHA512

      b8b2b250b03084eba7c407cfe99bfb6e19fe7a9b06472136468c85890391012e01b28126ee23040472127a8df2d5d66ae8620ccc2bbf9dfd3c5f4a9c82ed1249

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

      Filesize

      143KB

      MD5

      250fcb3398d262e5cf16ef67feb71787

      SHA1

      94acc26f63f9fe050fc37a4c4de91dd5259a077c

      SHA256

      4ac349e2b8c861c982779353a473f600e64f8a0e9a92a00778c2a330dc852576

      SHA512

      d05ebc06412fbcb229b05248b899c7f49d480179eaa77a4b80a769577b66b9924f9f05b41dc87a42d859c2d284572dcd923926a1ce8746feb150463471598ad7

    • memory/1840-1-0x0000000000070000-0x00000000000E6000-memory.dmp

      Filesize

      472KB

    • memory/1840-2-0x00007FF974D60000-0x00007FF975821000-memory.dmp

      Filesize

      10.8MB

    • memory/1840-14-0x00007FF974D60000-0x00007FF975821000-memory.dmp

      Filesize

      10.8MB

    • memory/1840-0-0x00007FF974D63000-0x00007FF974D65000-memory.dmp

      Filesize

      8KB

    • memory/3192-18-0x0000000004F40000-0x0000000004FD2000-memory.dmp

      Filesize

      584KB

    • memory/3192-19-0x0000000074CD0000-0x0000000075480000-memory.dmp

      Filesize

      7.7MB

    • memory/3192-35-0x0000000074CD0000-0x0000000075480000-memory.dmp

      Filesize

      7.7MB

    • memory/3192-20-0x0000000004F30000-0x0000000004F3A000-memory.dmp

      Filesize

      40KB

    • memory/3192-17-0x0000000005450000-0x00000000059F4000-memory.dmp

      Filesize

      5.6MB

    • memory/3192-16-0x0000000000520000-0x0000000000528000-memory.dmp

      Filesize

      32KB

    • memory/3192-15-0x0000000074CDE000-0x0000000074CDF000-memory.dmp

      Filesize

      4KB

    • memory/5088-34-0x0000000000D10000-0x0000000000D3A000-memory.dmp

      Filesize

      168KB