Analysis

  • max time kernel
    127s
  • max time network
    169s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    01-02-2022 12:40

General

  • Target

    ff2b9b6121b3812a344144bfa4082c8b7567af1e75e352fde64eee6d060b18d8.dll

  • Size

    6KB

  • MD5

    1cd6aba7a98a884da1b038bb5d74071d

  • SHA1

    a113d6af994fdd81c70b9cf5b8a3f11819c7c568

  • SHA256

    ff2b9b6121b3812a344144bfa4082c8b7567af1e75e352fde64eee6d060b18d8

  • SHA512

    be08ebed96c90640d5e90e7ab43c29e5c0ba4a0a7c16c6db10ae3de4b84f27e5347170a97cfa99fa9493f42fd3ea32c79f437fabd9fb1dc0bd2292d882f3f7e8

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 8 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\ff2b9b6121b3812a344144bfa4082c8b7567af1e75e352fde64eee6d060b18d8.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1860
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\ff2b9b6121b3812a344144bfa4082c8b7567af1e75e352fde64eee6d060b18d8.dll,#1
      2⤵
        PID:4676
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4676 -s 788
          3⤵
          • Program crash
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2504
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4676 -ip 4676
      1⤵
      • Suspicious use of NtCreateProcessExOtherParentProcess
      • Suspicious use of WriteProcessMemory
      PID:1816
    • C:\Windows\System32\WaaSMedicAgent.exe
      C:\Windows\System32\WaaSMedicAgent.exe 3ef252d83f18165a3738f24f985e21b7 iIDj98yJGUW8jn8xMtQdsA.0.1.0.0.0
      1⤵
      • Modifies data under HKEY_USERS
      PID:1568
    • 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:4404

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/4404-130-0x0000018C72580000-0x0000018C72590000-memory.dmp

      Filesize

      64KB

    • memory/4404-137-0x0000018C75960000-0x0000018C75964000-memory.dmp

      Filesize

      16KB