Analysis

  • max time kernel
    128s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    01-02-2022 12:38

General

  • Target

    99a0c3a57918273a370a2e9af1dc967e92846821c2198fcdddfc732f8cd15ae1.dll

  • Size

    33KB

  • MD5

    1aeecb2827babb42468d8257aa6afdeb

  • SHA1

    653f6938e5521cf70596fc4a3f1d8c8eef21959a

  • SHA256

    99a0c3a57918273a370a2e9af1dc967e92846821c2198fcdddfc732f8cd15ae1

  • SHA512

    846874d5488fe6aebe39f7c84cdf43bb3af418835bf3bc87a0a799c108d4966121a46a5e8f5d17bd98e5fb376d09169de48e7ea1129dd1b3df72b4508dff9f4c

Score
10/10

Malware Config

Signatures

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Sets service image path in registry 2 TTPs
  • Drops file in Windows directory 6 IoCs
  • Program crash 1 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 2 IoCs
  • Modifies data under HKEY_USERS 41 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\99a0c3a57918273a370a2e9af1dc967e92846821c2198fcdddfc732f8cd15ae1.dll,#1
    1⤵
      PID:4004
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 4004 -s 452
        2⤵
        • Program crash
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: EnumeratesProcesses
        PID:4280
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -pss -s 432 -p 4004 -ip 4004
      1⤵
      • Suspicious use of NtCreateProcessExOtherParentProcess
      • Suspicious use of WriteProcessMemory
      PID:1368
    • C:\Windows\System32\WaaSMedicAgent.exe
      C:\Windows\System32\WaaSMedicAgent.exe 35ff4ae0417412bbfbad4ca734f7ffdf exYODoUCP0ikMCSb/vNmBw.0.1.0.0.0
      1⤵
      • Modifies data under HKEY_USERS
      PID:4324
    • 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:1796

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1796-142-0x0000024B6AD30000-0x0000024B6AD34000-memory.dmp

      Filesize

      16KB