Analysis

  • max time kernel
    135s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    23/11/2020, 16:24

General

  • Target
    Response_to_Motion_to_Vacate.doc
  • Size 621KB
  • Sample201123-rt6vg1tc8e
  • SHA256 f1be37a12486b79888a0e17aaa2c8430c2a11eb224483c60d21a36a46bb4ccfb
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Blacklisted process makes network request 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 5 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Response_to_Motion_to_Vacate.doc" /o ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3160
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2412
      • C:\Windows\System32\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\Microsoft\Templates\W0rd.dll,Start
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:2924
        • C:\Windows\SysWOW64\rundll32.exe
          "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\Microsoft\Templates\W0rd.dll,Start
          3⤵
          • Blacklisted process makes network request
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2056
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\System32\svchost.exe
            4⤵
            • Checks processor information in registry
            • Suspicious behavior: EnumeratesProcesses
            PID:1608

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/1608-16-0x0000000000400000-0x0000000000448000-memory.dmp

          memory/1608-18-0x0000000000400000-0x0000000000448000-memory.dmp

          memory/2412-8-0x0000000002DD0000-0x0000000002DD1000-memory.dmp

          memory/2412-9-0x0000000001450000-0x0000000001451000-memory.dmp

          memory/2412-10-0x0000000003550000-0x0000000003551000-memory.dmp

          memory/3160-0-0x00000215BBE80000-0x00000215BC4B7000-memory.dmp