Analysis

  • max time kernel
    135s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 02:56

General

  • Target

    3507038907afc5fb9c2c8b0c98c1c85933b75501b7a8753f35ed87b4913e096c.xls

  • Size

    99KB

  • MD5

    7bbb5e14dcc30c24b6543312386ad173

  • SHA1

    9c5ebdedcd276885244f9616fb68cbb063681760

  • SHA256

    3507038907afc5fb9c2c8b0c98c1c85933b75501b7a8753f35ed87b4913e096c

  • SHA512

    dcb52692c0d9e4bc278262e82fbfddcb3ea97ef9821b23a197c616fe2ea96d69805bacb2c889dae1dae93c57e344beea7685034639c6112e576178ba0f8c17b8

  • SSDEEP

    1536:IpppFawT3BhWVbrzhcCo7ITkR62lScfrbmWt2XKsbM2M/MJMuN:9mWVbrzhQ7ITk9Rj6af5kuG

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\3507038907afc5fb9c2c8b0c98c1c85933b75501b7a8753f35ed87b4913e096c.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:1140
    • 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:1116
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:912
    • 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:1292
    • 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:1012

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/912-222-0x0000000000000000-mapping.dmp
  • memory/1012-221-0x0000000000000000-mapping.dmp
  • memory/1116-219-0x0000000000000000-mapping.dmp
  • memory/1140-54-0x000000002FD91000-0x000000002FD94000-memory.dmp
    Filesize

    12KB

  • memory/1140-55-0x0000000070FD1000-0x0000000070FD3000-memory.dmp
    Filesize

    8KB

  • memory/1140-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1140-57-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/1140-58-0x0000000074DE1000-0x0000000074DE3000-memory.dmp
    Filesize

    8KB

  • memory/1140-223-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/1140-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1140-385-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/1292-220-0x0000000000000000-mapping.dmp