Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    01/12/2021, 22:26

General

  • Target
    57949616735.xlsm
  • Size 149KB
  • Sample211201-2cl6eabfa6
  • SHA256 505f387e249bafa28dcebfcd8f1f6be7bb3df935105d92b00a81c3fed473d699
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 2 IoCs

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

  • Blocklisted process makes network request 1 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 4 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\57949616735.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:1628
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic process call create "mshta C:\ProgramData\lBlgRsXhQNVeyR.rtf"
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of AdjustPrivilegeToken
      PID:608
  • C:\Windows\system32\mshta.exe
    mshta C:\ProgramData\lBlgRsXhQNVeyR.rtf
    1⤵
    • Process spawned unexpected child process
    • Blocklisted process makes network request
    • Modifies Internet Explorer settings
    PID:1148

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1628-55-0x000000002FFD1000-0x000000002FFD4000-memory.dmp

        memory/1628-56-0x00000000715D1000-0x00000000715D3000-memory.dmp

        memory/1628-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1628-60-0x000000005FFF0000-0x0000000060000000-memory.dmp