Analysis

  • max time kernel
    105s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:25

General

  • Target

    4694fd27bdbf5b240daf20026ddd2d12a9ddaa3dd2b8b5a60d2fe48da16865f3.xls

  • Size

    102KB

  • MD5

    740ddd0b5dfd217121428c94d1e7960f

  • SHA1

    5662dfeb414bacc6e47de591942a8a05f9ff20da

  • SHA256

    4694fd27bdbf5b240daf20026ddd2d12a9ddaa3dd2b8b5a60d2fe48da16865f3

  • SHA512

    8e2468bb5a1e78e20603cccd5eac3c960f13189e723310f52da6aa5cb2981459b03c5ca6e02f4f0b94fef618cc62acc02c0117451705739f76d81825d59c0f89

  • SSDEEP

    1536:sFFFpvkkj5pWVbrzlv7ITkR62lGM88wcJtXwRvM2M/MHUd+:SWVbrzh7ITk9tjDJtXwS5k0d+

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\4694fd27bdbf5b240daf20026ddd2d12a9ddaa3dd2b8b5a60d2fe48da16865f3.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:1972
    • 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:892
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1192
    • 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:1956
    • 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:536

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/536-221-0x0000000000000000-mapping.dmp
  • memory/892-219-0x0000000000000000-mapping.dmp
  • memory/1192-222-0x0000000000000000-mapping.dmp
  • memory/1956-220-0x0000000000000000-mapping.dmp
  • memory/1972-54-0x000000002F1A1000-0x000000002F1A4000-memory.dmp
    Filesize

    12KB

  • memory/1972-55-0x0000000071531000-0x0000000071533000-memory.dmp
    Filesize

    8KB

  • memory/1972-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1972-57-0x000000007251D000-0x0000000072528000-memory.dmp
    Filesize

    44KB

  • memory/1972-58-0x0000000075D71000-0x0000000075D73000-memory.dmp
    Filesize

    8KB

  • memory/1972-383-0x000000007251D000-0x0000000072528000-memory.dmp
    Filesize

    44KB

  • memory/1972-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1972-385-0x000000007251D000-0x0000000072528000-memory.dmp
    Filesize

    44KB