Analysis

  • max time kernel
    148s
  • max time network
    134s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    14-01-2022 07:57

General

  • Target

    42c5bb56d6d7939abf3f29c32648b0239c79d8362d5b7634e96c8387b4376831.xlsm

  • Size

    83KB

  • MD5

    98f9e5ee47c74bad8a3d8abdbd55e0f2

  • SHA1

    3961997d2fdec003121adccce3afe8a45d7d2b42

  • SHA256

    42c5bb56d6d7939abf3f29c32648b0239c79d8362d5b7634e96c8387b4376831

  • SHA512

    4f0eef38fc9d601fdc5732cd0b066fa11d554282bb6f49e4e1c78a7509f800af8fc9417445ef86394594efe72f9559a762a28b6d2140dfe64805690cd8719263

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://moversphiladelphia.org/cmsxml/9ByFSxP/

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • suricata: ET MALWARE W32/Emotet CnC Beacon 3

    suricata: ET MALWARE W32/Emotet CnC Beacon 3

  • Blocklisted process makes network request 3 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 12 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\42c5bb56d6d7939abf3f29c32648b0239c79d8362d5b7634e96c8387b4376831.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3052
    • C:\Windows\SysWow64\rundll32.exe
      C:\Windows\SysWow64\rundll32.exe ..\erum.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2320
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\erum.ocx",DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:3056
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Fzohlmciyfe\hjmpq.ccv",swBRMIf
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3948
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Fzohlmciyfe\hjmpq.ccv",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:1536

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3052-117-0x00007FFD72FE0000-0x00007FFD72FF0000-memory.dmp

    Filesize

    64KB

  • memory/3052-120-0x000001CB1ABD0000-0x000001CB1ABD2000-memory.dmp

    Filesize

    8KB

  • memory/3052-124-0x00007FFD72FE0000-0x00007FFD72FF0000-memory.dmp

    Filesize

    64KB

  • memory/3052-119-0x000001CB1ABD0000-0x000001CB1ABD2000-memory.dmp

    Filesize

    8KB

  • memory/3052-118-0x000001CB1ABD0000-0x000001CB1ABD2000-memory.dmp

    Filesize

    8KB

  • memory/3052-114-0x00007FFD72FE0000-0x00007FFD72FF0000-memory.dmp

    Filesize

    64KB

  • memory/3052-116-0x00007FFD72FE0000-0x00007FFD72FF0000-memory.dmp

    Filesize

    64KB

  • memory/3052-115-0x00007FFD72FE0000-0x00007FFD72FF0000-memory.dmp

    Filesize

    64KB