Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12/01/2022, 02:04

General

  • Target
    SecuriteInfo.com.Heur.29683.406.xlsm
  • Size 83KB
  • Sample220112-chabcsafa8
  • SHA256 e06e1cc33f42f59f86b44d17359234628540e287dc10a39ac66ae21449abd380
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

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

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.29683.406.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:1724
    • 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:452
      • 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:392
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Vnnuprxkkaqigzp\kspimkzyp.xlv",XXYsxetlcFx
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1000
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Vnnuprxkkaqigzp\kspimkzyp.xlv",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:1716

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/392-68-0x0000000000831000-0x0000000000855000-memory.dmp

        memory/392-72-0x0000000002621000-0x0000000002645000-memory.dmp

        memory/392-76-0x00000000026E1000-0x0000000002705000-memory.dmp

        memory/392-74-0x0000000002681000-0x00000000026A5000-memory.dmp

        memory/392-70-0x0000000000C81000-0x0000000000CA5000-memory.dmp

        memory/392-66-0x0000000000731000-0x0000000000755000-memory.dmp

        memory/452-62-0x0000000000265000-0x0000000000266000-memory.dmp

        memory/452-58-0x0000000076491000-0x0000000076493000-memory.dmp

        memory/452-61-0x0000000000241000-0x0000000000265000-memory.dmp

        memory/1000-80-0x00000000002F1000-0x0000000000315000-memory.dmp

        memory/1716-88-0x0000000001E91000-0x0000000001EB5000-memory.dmp

        memory/1716-84-0x0000000000131000-0x0000000000155000-memory.dmp

        memory/1716-86-0x0000000000891000-0x00000000008B5000-memory.dmp

        memory/1716-90-0x0000000001F41000-0x0000000001F65000-memory.dmp

        memory/1724-55-0x0000000071C41000-0x0000000071C43000-memory.dmp

        memory/1724-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1724-54-0x000000002F1B1000-0x000000002F1B4000-memory.dmp