Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    04/07/2026, 12:24

General

  • Target
    LetsPRO.exe
  • Size 243KB
  • Sample260704-plefpsfs9v
  • SHA256 0e66192b248183324a6f3afc294e25299d096c5fbe9f99dc351613a1cf8d9d84
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Drops file in Drivers directory 3 IoCs
  • Unexpected DNS network traffic destination 3 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Network Service Discovery 1 TTPs 2 IoCs

    Attempt to gather information on host's network.

  • Drops file in System32 directory 16 IoCs
  • Drops file in Windows directory 6 IoCs
  • 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 62 IoCs

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

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Modifies data under HKEY_USERS 42 IoCs
  • Modifies registry class 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 30 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 7 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\LetsPRO.exe
    "C:\Users\Admin\AppData\Local\Temp\LetsPRO.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:696
    • C:\Users\Admin\AppData\Local\Temp\app-3.20.0\LetsPRO.exe
      "C:\Users\Admin\AppData\Local\Temp\app-3.20.0\LetsPRO.exe"
      2⤵
      • Unexpected DNS network traffic destination
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2240
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\driver\tapinstall.exe" install "C:\Users\Admin\AppData\Local\Temp\driver\oemVista.inf" tap0901"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3784
        • C:\Users\Admin\AppData\Local\Temp\driver\tapinstall.exe
          "C:\Users\Admin\AppData\Local\Temp\driver\tapinstall.exe" install "C:\Users\Admin\AppData\Local\Temp\driver\oemVista.inf" tap0901
          4⤵
          • Drops file in System32 directory
          • Drops file in Windows directory
          • Checks SCSI registry key(s)
          • Suspicious use of AdjustPrivilegeToken
          PID:4652
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C ipconfig /all
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:896
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /all
          4⤵
          • System Location Discovery: System Language Discovery
          • Gathers network information
          PID:2932
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C route print
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2236
        • C:\Windows\SysWOW64\ROUTE.EXE
          route print
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3428
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C arp -a
        3⤵
        • Network Service Discovery
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1720
        • C:\Windows\SysWOW64\ARP.EXE
          arp -a
          4⤵
          • Network Service Discovery
          • System Location Discovery: System Language Discovery
          PID:3172
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k DcomLaunch -p -s DeviceInstall
    1⤵
    • Drops file in Windows directory
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4368
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "4" "0" "C:\Users\Admin\AppData\Local\Temp\{d2e4af68-a473-994a-b279-d3c33bee39af}\oemvista.inf" "9" "4d14a44ff" "0000000000000148" "WinSta0\Default" "0000000000000160" "208" "c:\users\admin\appdata\local\temp\driver"
      2⤵
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Checks SCSI registry key(s)
      • Modifies data under HKEY_USERS
      PID:3056
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "2" "211" "ROOT\NET\0000" "C:\Windows\INF\oem3.inf" "oem3.inf:3beb73aff103cc24:tap0901.ndi:9.24.6.601:tap0901," "4d14a44ff" "0000000000000148"
      2⤵
      • Drops file in Drivers directory
      • Drops file in Windows directory
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:3132
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman
    1⤵
    • Modifies data under HKEY_USERS
    PID:4328
  • C:\Users\Admin\AppData\Local\Temp\app-3.20.0\LetsPRO.exe
    "C:\Users\Admin\AppData\Local\Temp\app-3.20.0\LetsPRO.exe" /silent
    1⤵
    • System Location Discovery: System Language Discovery
    PID:4808
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p
    1⤵
      PID:4504

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          __PSScriptPolicyTest_0511edjt.0r3.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0511edjt.0r3.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          LetsPRO.INI

          • Path C:\Users\Admin\AppData\Local\Temp\app-3.20.0\LetsPRO.INI
          • Size 1KB
          • SHA256 de5e478326ef40549c2b9dee246f8b8b602b488c9e48b5daaefe9f9f431b5b71
          • MD5 SHA1 SHA512 TLSH

          tap0901.sys

          • Path C:\Users\Admin\AppData\Local\Temp\{D2E4A~1\tap0901.sys
          • Size 38KB
          • SHA256 589c5667b1602837205da8ea8e92fe13f8c36048b293df931c99b39641052253
          • MD5 SHA1 SHA512 SSDEEP TLSH

          oemvista.inf

          • Path C:\Users\Admin\AppData\Local\Temp\{d2e4af68-a473-994a-b279-d3c33bee39af}\oemvista.inf
          • Size 7KB
          • SHA256 150ef8eb07532146f833dc020c02238161043260b8a565c3cfcb2365bad980d9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          SET531D.tmp

          • Path C:\Windows\System32\DriverStore\Temp\{46e2364f-965e-de45-b716-c957819913c6}\SET531D.tmp
          • Size 10KB
          • SHA256 cc74cdb88c198eb00aef4caa20bf1fda9256917713a916e6b94435cd4dcb7f7b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2240-122-0x00000000557E0000-0x0000000055846000-memory.dmp

          memory/2240-4-0x0000000005E40000-0x0000000005E50000-memory.dmp

          memory/2240-7-0x00000000063E0000-0x0000000006492000-memory.dmp

          memory/2240-8-0x00000000064A0000-0x00000000064C2000-memory.dmp

          memory/2240-9-0x00000000064D0000-0x0000000006824000-memory.dmp

          memory/2240-10-0x0000000006BC0000-0x0000000006BDE000-memory.dmp

          memory/2240-11-0x0000000006BE0000-0x0000000006BFA000-memory.dmp

          memory/2240-12-0x0000000006C20000-0x0000000006C36000-memory.dmp

          memory/2240-14-0x0000000006C50000-0x0000000006C5A000-memory.dmp

          memory/2240-15-0x0000000006C90000-0x0000000006CB6000-memory.dmp

          memory/2240-17-0x0000000006C80000-0x0000000006C8A000-memory.dmp

          memory/2240-134-0x0000000056630000-0x000000005664E000-memory.dmp

          memory/2240-13-0x0000000005E40000-0x0000000005E50000-memory.dmp

          memory/2240-19-0x0000000007010000-0x0000000007032000-memory.dmp

          memory/2240-18-0x00000000074A0000-0x00000000079CC000-memory.dmp

          memory/2240-20-0x0000000006FE0000-0x0000000006FEC000-memory.dmp

          memory/2240-22-0x0000000007FF0000-0x0000000007FFE000-memory.dmp

          memory/2240-30-0x0000000051760000-0x00000000517F2000-memory.dmp

          memory/2240-31-0x0000000052360000-0x0000000052368000-memory.dmp

          memory/2240-33-0x0000000006A30000-0x0000000006A3E000-memory.dmp

          memory/2240-34-0x0000000052350000-0x0000000052351000-memory.dmp

          memory/2240-32-0x0000000052590000-0x00000000525C8000-memory.dmp

          memory/2240-36-0x0000000054A60000-0x0000000054AE2000-memory.dmp

          memory/2240-37-0x0000000054960000-0x0000000054992000-memory.dmp

          memory/2240-39-0x0000000054B10000-0x0000000054B26000-memory.dmp

          memory/2240-41-0x0000000054B00000-0x0000000054B0A000-memory.dmp

          memory/2240-42-0x0000000054B60000-0x0000000054B72000-memory.dmp

          memory/2240-40-0x0000000054AF0000-0x0000000054AFA000-memory.dmp

          memory/2240-35-0x00000000549B0000-0x0000000054A60000-memory.dmp

          memory/2240-5-0x0000000005F00000-0x0000000005FA2000-memory.dmp

          memory/2240-125-0x00000000560E0000-0x000000005612C000-memory.dmp

          memory/2240-3-0x0000000005D60000-0x0000000005D6A000-memory.dmp

          memory/2240-106-0x00000000559E0000-0x0000000056008000-memory.dmp

          memory/2240-2-0x0000000005DA0000-0x0000000005DE6000-memory.dmp

          memory/2240-115-0x0000000054C20000-0x0000000054C56000-memory.dmp

          memory/2240-114-0x0000000054BC0000-0x0000000054BDA000-memory.dmp

          memory/2240-117-0x0000000054C00000-0x0000000054C1E000-memory.dmp

          memory/2240-116-0x0000000056690000-0x0000000056D0A000-memory.dmp

          memory/2240-118-0x00000000552E0000-0x0000000055376000-memory.dmp

          memory/2240-121-0x0000000055600000-0x000000005564A000-memory.dmp

          memory/2240-120-0x0000000052180000-0x000000005219E000-memory.dmp

          memory/2240-123-0x0000000005E40000-0x0000000005E50000-memory.dmp

          memory/2240-0-0x0000000000E80000-0x0000000001046000-memory.dmp

          memory/2240-119-0x0000000056D10000-0x00000000572B4000-memory.dmp

          memory/2240-6-0x0000000005FB0000-0x0000000006016000-memory.dmp

          memory/2240-1-0x0000000003410000-0x0000000003436000-memory.dmp

          memory/2240-16-0x0000000006C60000-0x0000000006C68000-memory.dmp

          memory/2240-135-0x00000000572C0000-0x0000000057363000-memory.dmp

          memory/2240-136-0x0000000057370000-0x000000005737A000-memory.dmp

          memory/2240-137-0x00000000573D0000-0x00000000573E0000-memory.dmp

          memory/2240-139-0x00000000577D0000-0x00000000577D8000-memory.dmp

          memory/2240-141-0x0000000057B00000-0x0000000057B1E000-memory.dmp

          memory/2240-140-0x00000000577E0000-0x00000000577F0000-memory.dmp

          memory/2240-142-0x0000000057840000-0x0000000057848000-memory.dmp

          memory/2240-138-0x0000000057800000-0x000000005783A000-memory.dmp

          memory/2240-145-0x0000000005E40000-0x0000000005E50000-memory.dmp

          memory/2240-152-0x0000000051A20000-0x0000000051A31000-memory.dmp

          memory/2240-155-0x0000000005E40000-0x0000000005E50000-memory.dmp

          memory/2240-153-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-154-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-156-0x00000000562B0000-0x00000000562E2000-memory.dmp

          memory/2240-159-0x0000000057A50000-0x0000000057A66000-memory.dmp

          memory/2240-158-0x0000000056180000-0x000000005618A000-memory.dmp

          memory/2240-157-0x0000000056340000-0x0000000056352000-memory.dmp

          memory/2240-164-0x0000000005E40000-0x0000000005E50000-memory.dmp

          memory/2240-165-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-166-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-169-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-168-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-171-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-170-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-173-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-172-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-175-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-174-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-177-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-176-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-179-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-178-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-181-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-180-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-183-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-182-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-185-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-184-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-187-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-186-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-189-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-188-0x000000006DA80000-0x000000006E806000-memory.dmp

          memory/2240-191-0x000000006C890000-0x000000006D050000-memory.dmp

          memory/2240-190-0x000000006DA80000-0x000000006E806000-memory.dmp