Analysis

  • max time kernel
    123s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:26

General

  • Target

    418cbd99460c6c24ddd1aa7072e2a2a1d3c4a5546aa75d0e11b034015488b041.xls

  • Size

    102KB

  • MD5

    2269705b0b0087eeeaa0e898ca3d6a58

  • SHA1

    e78bab8a55d6e9859455572f55061729f25ff9f1

  • SHA256

    418cbd99460c6c24ddd1aa7072e2a2a1d3c4a5546aa75d0e11b034015488b041

  • SHA512

    9ebd0a1820f06d5bccd3088a451c42f30d0edf17246ff3c7deb8d42c047e972d528310a8755fb965546700995f40754ef82c034f9d23370722250de0a35354ac

  • SSDEEP

    1536:LQQQca5QyDHBWVbrzlp7ITkR62lGM88wcJtXwRlM2M/M/EbdF:+WVbrz/7ITk9tjDJtXw45kYdF

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 3 IoCs

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

  • Deletes itself 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Views/modifies file attributes 1 TTPs 1 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\418cbd99460c6c24ddd1aa7072e2a2a1d3c4a5546aa75d0e11b034015488b041.xls
    1⤵
    • Deletes itself
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1224
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1520
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1524
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      PID:740
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      PID:760

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

1
T1158

Defense Evasion

Modify Registry

1
T1112

Hidden Files and Directories

1
T1158

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/740-220-0x0000000000000000-mapping.dmp
  • memory/760-221-0x0000000000000000-mapping.dmp
  • memory/1224-54-0x000000002F231000-0x000000002F234000-memory.dmp
    Filesize

    12KB

  • memory/1224-55-0x0000000071281000-0x0000000071283000-memory.dmp
    Filesize

    8KB

  • memory/1224-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1224-57-0x000000007226D000-0x0000000072278000-memory.dmp
    Filesize

    44KB

  • memory/1224-58-0x0000000076041000-0x0000000076043000-memory.dmp
    Filesize

    8KB

  • memory/1224-383-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1224-384-0x000000007226D000-0x0000000072278000-memory.dmp
    Filesize

    44KB

  • memory/1520-219-0x0000000000000000-mapping.dmp
  • memory/1524-222-0x0000000000000000-mapping.dmp