Resubmissions

30/12/2024, 19:54

241230-ymjw9ayme110

24/09/2024, 08:26

240924-kcchja1cla10

19/09/2024, 16:17

240919-trjptsybql10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/09/2024, 08:26

General

  • Target
    ToDesk_x64_4.7.4.8.exe
  • Size 56.3MB
  • Sample240924-kcchja1cla
  • SHA256 3771d6a0594a42845193f182b177151b295e458f17749e74ae5a5320210a2fe8
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Detects PlugX payload 23 IoCs
  • PlugX

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

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 18 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 16 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 SCSI registry key(s) 3 TTPs 5 IoCs

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

  • 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 3 IoCs
  • Modifies registry class 25 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 47 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:4140
    • 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:2804
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • 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:4716
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DB6F7258365866290DA4187FC19845D6 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1424
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 3BCE7360D3F72066EB2F52B73FBB10C4 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1780
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4984
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B7D79AE098C3CB947F2EF6FA4873A841
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4604
      • C:\Program Files\ToDesk\ToDesk.exe
        "C:\Program Files\ToDesk\ToDesk.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetWindowsHookEx
        PID:5048
      • 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:4220
        • C:\Windows\SysWOW64\svchost.exe
          C:\Windows\SysWOW64\svchost.exe 100 4220
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2116
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1384
    • 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:2936
      • 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 behavior: GetForegroundWindowSpam
        • Suspicious use of WriteProcessMemory
        PID:2864
        • C:\Windows\SysWOW64\msiexec.exe
          C:\Windows\system32\msiexec.exe 209 2864
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          PID:1932
    • 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:4976
      • 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:3708
      • 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:752

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e580982.rbs

          • Path C:\Config.Msi\e580982.rbs
          • Size 12KB
          • SHA256 702221fd66b493f32900e8f7cd9247fc72cecc7bc14964948e9f28ec9556dd11
          • MD5 SHA1 SHA512 SSDEEP

          ToDesk.exe

          • Path C:\Program Files\ToDesk\ToDesk.exe
          • Size 48.4MB
          • SHA256 a9e56ee892beb3e0be3f2d412a2b4448c5a41b28fe2a15a40798faa119d4025c
          • MD5 SHA1 SHA512 SSDEEP

          wmicode.exe

          • Path C:\Program Files\ToDesk\Tools\wmicode.exe
          • Size 122KB
          • SHA256 d5d9fefd7a79ba0c121ba76d0cd51f9520effc490424978bd341f130ec835455
          • MD5 SHA1 SHA512 SSDEEP

          wmicodegen.dll

          • Path C:\Program Files\ToDesk\Tools\wmicodegen.dll
          • Size 9KB
          • SHA256 c9f2fd4ffc334d6e952b04b2d799714d034d6696dcff18c39f7e597ab9279451
          • MD5 SHA1 SHA512 SSDEEP

          wmidll.dat

          • Path C:\Program Files\ToDesk\Tools\wmidll.dat
          • Size 130KB
          • SHA256 19795c19808560ea7f8595c77bf00f6db848479469ee9255bd80ee564e34867b
          • MD5 SHA1 SHA512 SSDEEP

          config.ini

          • Path C:\Program Files\ToDesk\config.ini
          • Size 246B
          • SHA256 3a18b3362aeb88a159738f8de22ee238484bd65e3cba6449dd5dedc8861034c9
          • MD5 SHA1 SHA512

          config.ini

          • Path C:\Program Files\ToDesk\config.ini
          • Size 394B
          • SHA256 b14e922d7a97fa0ba033815d64bc23a43739ac016b5899a464e45db709c7d18b
          • MD5 SHA1 SHA512

          config.ini

          • Path C:\Program Files\ToDesk\config.ini
          • Size 529B
          • SHA256 30f1080fc72608f618bfafc744e23a347ee592d485e7794842dca831d5d9af00
          • MD5 SHA1 SHA512

          config.ini

          • Path C:\Program Files\ToDesk\config.ini
          • Size 589B
          • SHA256 330c85c8fc2ae5c8ab9427d1308690143e1840082764ed3513b57a897f0e1aba
          • MD5 SHA1 SHA512

          zrtc.dll

          • Path C:\Program Files\ToDesk\zrtc.dll
          • Size 49.3MB
          • SHA256 d3f9c273b420be3ce59a8526d11827009215f559b39291844e3f98d8306c9a69
          • MD5 SHA1 SHA512 SSDEEP

          MSIB586.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB586.tmp
          • Size 349KB
          • SHA256 344abeb71ddccfdb70786849cca660982fd2ab099dcd74fd0d608a05139c8db1
          • MD5 SHA1 SHA512 SSDEEP

          ToDesk.msi

          • Path C:\Users\Admin\AppData\Roaming\Hainan YouQu Technology Co., Ltd\ToDesk 4.8.4.8\install\ToDesk.msi
          • Size 1.5MB
          • SHA256 e7e55be0c02d71e4188782471402557e7bbbaab85cdd95dfd08aa5b16a49f6a2
          • MD5 SHA1 SHA512 SSDEEP

          default.dic

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Spelling\en-us\default.dic
          • Size 2B
          • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
          • MD5 SHA1 SHA512

          MSIB87.tmp

          • Path C:\Windows\Installer\MSIB87.tmp
          • Size 566KB
          • SHA256 675f7d999bf17ceedcd799bdf1b2fb02cc560cdc18c0609aa92eca0cd3a98961
          • MD5 SHA1 SHA512 SSDEEP

          MSIC15.tmp

          • Path C:\Windows\Installer\MSIC15.tmp
          • Size 287KB
          • SHA256 e12b2df53c66e4b3c5073682434fee7b1e070794f79e090ccc8fb803487f3a94
          • MD5 SHA1 SHA512 SSDEEP

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 23.7MB
          • SHA256 7ad2be5af2525966ae02c2889ae2acbea96624023948cff8dce3b08373dbcdc7
          • MD5 SHA1 SHA512 SSDEEP

          {b0062b8f-51fa-4fe4-b61c-cd6b4fbe44bc}_OnDiskSnapshotProp

          • Path \??\Volume{f3a72b53-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{b0062b8f-51fa-4fe4-b61c-cd6b4fbe44bc}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 5301f2d2e56a1037e682c51d694f94bd1e76e27403b9ea63e26ec376f6d21812
          • MD5 SHA1 SHA512 SSDEEP

          memory/1932-639-0x0000000002210000-0x000000000224A000-memory.dmp

          memory/1932-182-0x0000000002210000-0x000000000224A000-memory.dmp

          memory/1932-497-0x0000000002210000-0x000000000224A000-memory.dmp

          memory/1932-179-0x0000000002210000-0x000000000224A000-memory.dmp

          memory/1932-632-0x0000000002210000-0x000000000224A000-memory.dmp

          memory/1932-633-0x0000000002210000-0x000000000224A000-memory.dmp

          memory/1932-183-0x0000000002210000-0x000000000224A000-memory.dmp

          memory/1932-181-0x0000000002210000-0x000000000224A000-memory.dmp

          memory/1932-180-0x0000000000410000-0x0000000000411000-memory.dmp

          memory/2116-127-0x00000000013B0000-0x00000000013EA000-memory.dmp

          memory/2116-176-0x00000000013B0000-0x00000000013EA000-memory.dmp

          memory/2864-159-0x0000000000C80000-0x0000000000CBA000-memory.dmp

          memory/2864-145-0x0000000000C80000-0x0000000000CBA000-memory.dmp

          memory/2864-158-0x00000000007D0000-0x00000000007D1000-memory.dmp

          memory/2864-148-0x0000000000C80000-0x0000000000CBA000-memory.dmp

          memory/2864-160-0x0000000000C80000-0x0000000000CBA000-memory.dmp

          memory/2864-161-0x0000000000C80000-0x0000000000CBA000-memory.dmp

          memory/2864-640-0x0000000000C80000-0x0000000000CBA000-memory.dmp

          memory/2864-496-0x0000000000C80000-0x0000000000CBA000-memory.dmp

          memory/2864-164-0x0000000000C80000-0x0000000000CBA000-memory.dmp

          memory/2864-631-0x0000000000C80000-0x0000000000CBA000-memory.dmp

          memory/2936-163-0x00000000017C0000-0x00000000017FA000-memory.dmp

          memory/2936-141-0x00000000017C0000-0x00000000017FA000-memory.dmp

          memory/4220-126-0x0000000000C50000-0x0000000000C8A000-memory.dmp

          memory/4220-166-0x0000000000C50000-0x0000000000C8A000-memory.dmp