Resubmissions

11/05/2022, 23:50

220511-3vnbvsgcap10

11/05/2022, 20:21

220511-y4y3hahfa610

Analysis

  • max time kernel
    154s
  • max time network
    160s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    11/05/2022, 23:50

General

  • Target
    Ace-mexico.xls
  • Size 40KB
  • Sample220511-3vnbvsgcap
  • SHA256 cb1e2bebe4a60f5fc9f44cce7962ed1ade2a297faadf66d1e59a7d0062d1ebfd
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    http://easiercommunications.com/wp-content/w/

Signatures

  • Emotet

    Emotet is a trojan that is primarily spread through spam emails.

  • 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

  • Downloads MZ/PE file
  • Loads dropped DLL 2 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\Ace-mexico.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1040
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe ..\wurod.ocx
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1864
      • C:\Windows\system32\regsvr32.exe
        ..\wurod.ocx
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:668
        • C:\Windows\system32\regsvr32.exe
          C:\Windows\system32\regsvr32.exe "C:\Windows\system32\VVnmHSOt\MsLQnVnOzYuWr.dll"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1516

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        wurod.ocx

        • Path C:\Users\Admin\wurod.ocx
        • Size 764KB
        • SHA256 3e2c16a01b2e87cc1bc16124e4507f4946dc17a1a524342bd08d87a43899bc81
        • MD5 SHA1 SHA512 SSDEEP

        wurod.ocx

        • Path \Users\Admin\wurod.ocx
        • Size 764KB
        • SHA256 3e2c16a01b2e87cc1bc16124e4507f4946dc17a1a524342bd08d87a43899bc81
        • MD5 SHA1 SHA512 SSDEEP

        wurod.ocx

        • Path \Users\Admin\wurod.ocx
        • Size 764KB
        • SHA256 3e2c16a01b2e87cc1bc16124e4507f4946dc17a1a524342bd08d87a43899bc81
        • MD5 SHA1 SHA512 SSDEEP

        memory/668-64-0x000007FEFBF01000-0x000007FEFBF03000-memory.dmp

        memory/668-66-0x0000000000200000-0x0000000000230000-memory.dmp

        memory/1040-58-0x0000000076811000-0x0000000076813000-memory.dmp

        memory/1040-57-0x000000007253D000-0x0000000072548000-memory.dmp

        memory/1040-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1040-54-0x000000002FB01000-0x000000002FB04000-memory.dmp

        memory/1040-55-0x0000000071551000-0x0000000071553000-memory.dmp