Resubmissions

24-09-2024 08:26

240924-kcchja1cla 10

19-09-2024 16:17

240919-trjptsybql 10

Analysis

  • max time kernel
    143s
  • max time network
    163s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19-09-2024 16:17

General

  • Target

    ToDesk_x64_4.7.4.8.exe

  • Size

    56.3MB

  • MD5

    e43eaf8183e538eb28e5dfd31ba074bc

  • SHA1

    4d90bca79dbb3994fc1cf99921b1942520bee490

  • SHA256

    3771d6a0594a42845193f182b177151b295e458f17749e74ae5a5320210a2fe8

  • SHA512

    d43c32749ff1db235f063cc071c33af41dde25fd1c92d1fb670ad8ee0c5b7ab24f172138d7a18b0f61d9e4e959d4b765965ca3e38f0aa9cbb4e51125d6de70a5

  • SSDEEP

    1572864:A4959RiO7XJ5d5crS8/JruPXzKgz5zejq4/OiV0xNnw:lT7XJ5gTJrOzKs5y//OiVwZw

Score
10/10

Malware Config

Signatures

  • Detects PlugX payload 17 IoCs
  • PlugX

    PlugX is a RAT (Remote Access Trojan) that has been around since 2008.

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 19 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

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

  • Drops file in Program Files directory 32 IoCs
  • Drops file in Windows directory 17 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 10 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 data under HKEY_USERS 46 IoCs
  • Modifies registry class 25 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 11 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\ToDesk_x64_4.7.4.8.exe
    "C:\Users\Admin\AppData\Local\Temp\ToDesk_x64_4.7.4.8.exe"
    1⤵
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2440
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\system32\msiexec.exe" /i "C:\Users\Admin\AppData\Roaming\Hainan YouQu Technology Co., Ltd\ToDesk 4.8.4.8\install\ToDesk.msi" AI_SETUPEXEPATH=C:\Users\Admin\AppData\Local\Temp\ToDesk_x64_4.7.4.8.exe SETUPEXEDIR=C:\Users\Admin\AppData\Local\Temp\ EXE_CMD_LINE="/exenoupdates /forcecleanup "
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of FindShellTrayWindow
      PID:2672
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2896
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DCA10EC1DBE15E47DDA45ED743BA27C0 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2644
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding C7F5DCCE4C20BB8529031517B2332E17 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2812
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 57765581B1373852E9B7D9860FF5DFC4
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2068
    • C:\Program Files\ToDesk\ToDesk.exe
      "C:\Program Files\ToDesk\ToDesk.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      PID:2448
    • C:\Program Files\ToDesk\Tools\wmicode.exe
      "C:\Program Files\ToDesk\Tools\wmicode.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1468
      • C:\Windows\SysWOW64\svchost.exe
        C:\Windows\SysWOW64\svchost.exe 100 1468
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:584
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:548
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003D4" "00000000000003AC"
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      PID:1744
    • C:\ProgramData\NVIDIASmart\SxS.exe
      "C:\ProgramData\NVIDIASmart\SxS.exe" 200 0
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2732
      • C:\Windows\SysWOW64\svchost.exe
        C:\Windows\SysWOW64\svchost.exe 201 0
        2⤵
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2780
        • C:\Windows\SysWOW64\msiexec.exe
          C:\Windows\system32\msiexec.exe 209 2780
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2256
    • C:\Program Files\ToDesk\ToDesk.exe
      "C:\Program Files\ToDesk\ToDesk.exe" --runservice
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2060
      • C:\Program Files\ToDesk\ToDesk.exe
        "C:\Program Files\ToDesk\ToDesk.exe" --hide --localPort=35600
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetWindowsHookEx
        PID:2568
      • C:\Program Files\ToDesk\ToDesk.exe
        "C:\Program Files\ToDesk\ToDesk.exe" --hide --localPort=35600
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:2260

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Config.Msi\f78fa68.rbs

      Filesize

      11KB

      MD5

      d7fa3782fd494947a88a270d67b5cc59

      SHA1

      683f85f86859817858a5370636f7f08310996797

      SHA256

      a12bc08fe04306713ac9f8eeab919ce3e776739408e523a29e51fa17734f4495

      SHA512

      c1ab7ae7d5000598da2bc14ef50cdb66659f1ffc0be5c7ed2d026ece1ee1e0414acc8c224cf23618089c56bd21e6a098d43689e99154b166c000eecd5e7a0104

    • C:\Program Files\ToDesk\Tools\wmicode.exe

      Filesize

      122KB

      MD5

      d771741bb33ab0f2f364fd10e486df33

      SHA1

      fbb4d03ab6582627d341f76956fe995c182c98b1

      SHA256

      d5d9fefd7a79ba0c121ba76d0cd51f9520effc490424978bd341f130ec835455

      SHA512

      41f089d7ca755a385f68a65105e2aee0c9a34df03911746d59266db42bf3bf74372b168cebc40b034975ffe86dea93929e3a42155076bd8dcfbbefca78ba075e

    • C:\Program Files\ToDesk\Tools\wmidll.dat

      Filesize

      130KB

      MD5

      b1231c5483c4e1ac2e4832047364355d

      SHA1

      37b697dbee932d6cfc813ef91a8014c129df44e7

      SHA256

      19795c19808560ea7f8595c77bf00f6db848479469ee9255bd80ee564e34867b

      SHA512

      edee0b31b1b391baeba69bfec883de659a7aec9cf33c46d88dbbb389b9ebbf07ee4d4fcc8acd13ca611c8c16bdbd3b015834577f0b8f6dc55ab7315b6051df62

    • C:\Program Files\ToDesk\config.ini

      Filesize

      246B

      MD5

      720ed41abd5ec81a1d76190df9b890a3

      SHA1

      5e1000bdca949e4f5f0ca09fc88ea45d7687b53d

      SHA256

      2b826187d8417023009fc21eafaa6f37c706773d08fa7773fe0dd3c1a60f0984

      SHA512

      879faa3237daecfe184a9f6ba1432d555c2558ed13e84583bfb8ea7bd58090edff83122d0280046dd053e4da7c9247c7574d8235261223738f65d6258d5ba911

    • C:\Program Files\ToDesk\config.ini

      Filesize

      394B

      MD5

      cba12fad2b85b26a6b6995ac1872ae5e

      SHA1

      68f1dda11dd6925140bd65e0dd2b4a69f30cfef8

      SHA256

      11442929d5e853d8349f95a80ca43f80f7bb213093b16a0fe6a5397fef665f54

      SHA512

      265f763ce08c58cad2f54d586629eb2b3e4bf7c30464eda7ca06d98174a3d551755c3ea7054516a4e6063c5f5c718d2599495bdfe743ecd1d634913421151f1d

    • C:\Program Files\ToDesk\config.ini

      Filesize

      529B

      MD5

      64023f15b2050fbaaf84b75d0baff353

      SHA1

      90df3c367a75cd8d31ceefbd36f93b3bd8107798

      SHA256

      7bcd769f291ef65f77972781f1e4a86451ad07759ba0caa0956be33a87aaba9f

      SHA512

      c897664b54908896616a5a19eb3ff06eb80b712f871b07b584c68ea28592f6d5bac76f64c601cb13316866ea93abee4a24008fa31f1bbc1452c0aad4e5df8946

    • C:\Program Files\ToDesk\config.ini

      Filesize

      589B

      MD5

      06f86ca455d2ff3f8ff87bfdc32368d6

      SHA1

      e975a4da8c1e9d0fa98c18e96a245212c75a993e

      SHA256

      e2d57616d30b35ebaa43c5fedec9f8e12d37a910d8871c657d6c691cbe63ac56

      SHA512

      1c8501ca6d5879af96335e68a8785db061b62b27d4e925a6e7a5622b5f62fb8da2b50dbf8692c2fdad62cab826e85b870fcddaf4eec7d134d5c5d86bbfa90587

    • C:\Program Files\ToDesk\zrtc.dll

      Filesize

      49.3MB

      MD5

      fab94e3b080e8d2dfc21b37278f73eb8

      SHA1

      73c55c05f53b9ead97a4a6acd497860efc119ca8

      SHA256

      d3f9c273b420be3ce59a8526d11827009215f559b39291844e3f98d8306c9a69

      SHA512

      41eb4ddb54e2e8d3e21921c06a83aa0e59cd371eaeda0708cea27a1f42e05df6e5b4aa7f8cef4d6c3185ac71e48a405f2e44c972341a9961ab8e06f91ccc0f3a

    • C:\Users\Admin\AppData\Local\Temp\MSI900F.tmp

      Filesize

      349KB

      MD5

      8752c01d76bc7b3a38b6acaf5b9c387b

      SHA1

      8c7b2b5ffdf3c46d2e9a5803f3b8ac20533e7778

      SHA256

      344abeb71ddccfdb70786849cca660982fd2ab099dcd74fd0d608a05139c8db1

      SHA512

      5a88de5be489088d8108dc45903e5d8368b53109c45646ab14ffe8fff41d5e3f5d19dc13ee1394dedb494e36f76824424602c8c65c6227741c952c2ffb7f4a0f

    • C:\Users\Admin\AppData\Roaming\Hainan YouQu Technology Co., Ltd\ToDesk 4.8.4.8\install\ToDesk.msi

      Filesize

      1.5MB

      MD5

      fd114784173437f9c5f462c62751fc63

      SHA1

      a34e669da0342deb4c8fcbb27fb07bf604ee2a26

      SHA256

      e7e55be0c02d71e4188782471402557e7bbbaab85cdd95dfd08aa5b16a49f6a2

      SHA512

      086e63466761b326ff1749bffd11a1361c0171a62018e525ae35e7838b15db34b8df32e5abbe5e10f05926eb4ff221531d685c23a84aa4a56d565c178df8b845

    • C:\Windows\Installer\MSI1C8.tmp

      Filesize

      287KB

      MD5

      31a4f044c23a648c306df463302c49b5

      SHA1

      e014c21b4b0f3b054ee3f7b6bbba6b38974ab5da

      SHA256

      e12b2df53c66e4b3c5073682434fee7b1e070794f79e090ccc8fb803487f3a94

      SHA512

      e9d5606325a3e3fb371738bef66566f0491d080a5d6208482543f8729cd194d9dc11e3bc3989c3c19f359d3f34da977022b8a6457b6479ce5c51e3bf091a22fc

    • C:\Windows\Installer\MSI80.tmp

      Filesize

      566KB

      MD5

      0e4db22ddc7c96801b65bc13e3a53455

      SHA1

      775da57600792fb18cd0e9626afc53bb2ba07abf

      SHA256

      675f7d999bf17ceedcd799bdf1b2fb02cc560cdc18c0609aa92eca0cd3a98961

      SHA512

      88ddb37880af878eddf7b82c919285dcec6360cea81c3755efeec7d0fb92c4e7ffe96ec654046ec9a4c6f1087d4e95b440b745621921041676bdc170663f3772

    • \Program Files\ToDesk\ToDesk.exe

      Filesize

      48.4MB

      MD5

      85b8e15b90d8bf333f0d49c11db9b1b0

      SHA1

      70ab7088257b0121a8e39dcab2a3846923f62ac0

      SHA256

      a9e56ee892beb3e0be3f2d412a2b4448c5a41b28fe2a15a40798faa119d4025c

      SHA512

      844b924351752992758d881f328176f4329f8f9182ced686e51fa1fe3413b8ea3f507eac031b997b07b8886cb978655443bd6da1c018181f25ca73d4e035f64b

    • \Program Files\ToDesk\Tools\wmicodegen.dll

      Filesize

      9KB

      MD5

      cf23d084f48349158cb8f837a02369bd

      SHA1

      bf2d8cee1ecbf85c29ab1ef4f157eebfb91f79e4

      SHA256

      c9f2fd4ffc334d6e952b04b2d799714d034d6696dcff18c39f7e597ab9279451

      SHA512

      48624f2e085dee127dc3499465ac1500d1daa8759e705af24a6f8dcfc417929a47ef973a62b79065312a2e5cda35819ef81c3fd98e62ea48c4db993943da545e

    • memory/584-130-0x00000000000E0000-0x00000000000FF000-memory.dmp

      Filesize

      124KB

    • memory/584-191-0x00000000002B0000-0x00000000002EA000-memory.dmp

      Filesize

      232KB

    • memory/584-127-0x0000000000080000-0x0000000000082000-memory.dmp

      Filesize

      8KB

    • memory/584-129-0x00000000000D0000-0x00000000000D1000-memory.dmp

      Filesize

      4KB

    • memory/584-132-0x00000000002B0000-0x00000000002EA000-memory.dmp

      Filesize

      232KB

    • memory/1468-126-0x0000000001BD0000-0x0000000001C0A000-memory.dmp

      Filesize

      232KB

    • memory/1468-161-0x0000000001BD0000-0x0000000001C0A000-memory.dmp

      Filesize

      232KB

    • memory/2256-190-0x0000000000290000-0x00000000002CA000-memory.dmp

      Filesize

      232KB

    • memory/2256-186-0x0000000000290000-0x00000000002CA000-memory.dmp

      Filesize

      232KB

    • memory/2256-187-0x0000000000090000-0x0000000000091000-memory.dmp

      Filesize

      4KB

    • memory/2256-188-0x0000000000290000-0x00000000002CA000-memory.dmp

      Filesize

      232KB

    • memory/2256-189-0x0000000000290000-0x00000000002CA000-memory.dmp

      Filesize

      232KB

    • memory/2440-30-0x0000000000870000-0x0000000000871000-memory.dmp

      Filesize

      4KB

    • memory/2440-0-0x0000000000870000-0x0000000000871000-memory.dmp

      Filesize

      4KB

    • memory/2732-151-0x0000000000290000-0x00000000002CA000-memory.dmp

      Filesize

      232KB

    • memory/2732-144-0x0000000000290000-0x00000000002CA000-memory.dmp

      Filesize

      232KB

    • memory/2780-152-0x00000000001E0000-0x000000000021A000-memory.dmp

      Filesize

      232KB

    • memory/2780-163-0x0000000000020000-0x0000000000021000-memory.dmp

      Filesize

      4KB

    • memory/2780-164-0x00000000001E0000-0x000000000021A000-memory.dmp

      Filesize

      232KB

    • memory/2780-165-0x00000000001E0000-0x000000000021A000-memory.dmp

      Filesize

      232KB

    • memory/2780-166-0x00000000001E0000-0x000000000021A000-memory.dmp

      Filesize

      232KB

    • memory/2780-168-0x00000000001E0000-0x000000000021A000-memory.dmp

      Filesize

      232KB

    • memory/2780-167-0x00000000001E0000-0x000000000021A000-memory.dmp

      Filesize

      232KB

    • memory/2780-150-0x00000000001E0000-0x000000000021A000-memory.dmp

      Filesize

      232KB