Analysis

  • max time kernel
    150s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12/01/2022, 02:04

General

  • Target
    SecuriteInfo.com.Heur.20045.25227.xlsm
  • Size 83KB
  • Sample220112-chabcsafa9
  • SHA256 edb7ef5d016fbb9228f1c0d5a3f3088990dc3d55acfdcbc6e4ed7cc97ead62c2
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    http://www.be-pu.com/4.hana/Y1XWpb1zWMRD/

  • xlm40.dropper

    https://josephinebaba.com/licenses/7Doxdg/

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Blocklisted process makes network request 2 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.

  • 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 28 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\SecuriteInfo.com.Heur.20045.25227.xlsm
    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:948
    • C:\Windows\SysWow64\rundll32.exe
      C:\Windows\SysWow64\rundll32.exe ..\adi.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1048
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\adi.ocx",DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:1896
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Xuzjlu\uefsr.moo",hDKMyemw
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1740
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Xuzjlu\uefsr.moo",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:1972

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/948-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/948-55-0x00000000711B1000-0x00000000711B3000-memory.dmp

        memory/948-54-0x000000002F801000-0x000000002F804000-memory.dmp

        memory/1048-58-0x0000000075B51000-0x0000000075B53000-memory.dmp

        memory/1048-61-0x0000000000721000-0x0000000000745000-memory.dmp

        memory/1048-62-0x0000000000745000-0x0000000000746000-memory.dmp

        memory/1740-78-0x0000000000241000-0x0000000000265000-memory.dmp

        memory/1896-68-0x0000000000361000-0x0000000000385000-memory.dmp

        memory/1896-72-0x0000000000C61000-0x0000000000C85000-memory.dmp

        memory/1896-74-0x00000000022F1000-0x0000000002315000-memory.dmp

        memory/1896-70-0x0000000000B61000-0x0000000000B85000-memory.dmp

        memory/1896-66-0x00000000001B1000-0x00000000001D5000-memory.dmp

        memory/1972-82-0x0000000000271000-0x0000000000295000-memory.dmp

        memory/1972-84-0x00000000003C1000-0x00000000003E5000-memory.dmp

        memory/1972-86-0x0000000000BA1000-0x0000000000BC5000-memory.dmp

        memory/1972-88-0x0000000002371000-0x0000000002395000-memory.dmp

        memory/1972-90-0x00000000025C1000-0x00000000025E5000-memory.dmp