Analysis

  • max time kernel
    106s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 03:09

General

  • Target

    27f8893f8755016028b006c82a826f05c5e5186aef972b0fe1487dbac300417c.xls

  • Size

    148KB

  • MD5

    cf8ef7becb2b29593ddd35a5259b8065

  • SHA1

    7bf378f8f80c0ae5483d441b9a271564659305af

  • SHA256

    27f8893f8755016028b006c82a826f05c5e5186aef972b0fe1487dbac300417c

  • SHA512

    93578e0e665ff15a04e304b04079a8b38a2241d7f7960272950e4dd21576026e4aad0aba9369a25e29bfb75d495419ec8f859e057749a98b42f09a7954c03c74

  • SSDEEP

    1536:/eEoWTJ6dTPnKrMUClgsfO/8Dg4Z956o2lVsxH6liOB3bi+2jcc0lbxOvTgZ/uIv:PlVsxH6liOBT2jcc0lbxOrHISaS2tD

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 3 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\27f8893f8755016028b006c82a826f05c5e5186aef972b0fe1487dbac300417c.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:1380
    • 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:1008
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:968
    • 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:2000
    • 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:1728

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/968-222-0x0000000000000000-mapping.dmp
  • memory/1008-219-0x0000000000000000-mapping.dmp
  • memory/1380-79-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-69-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-58-0x00000000757A1000-0x00000000757A3000-memory.dmp
    Filesize

    8KB

  • memory/1380-77-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-66-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-67-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-68-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-80-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-70-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-71-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-74-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-73-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-72-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-78-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-54-0x000000002F0F1000-0x000000002F0F4000-memory.dmp
    Filesize

    12KB

  • memory/1380-76-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-65-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-57-0x0000000071EED000-0x0000000071EF8000-memory.dmp
    Filesize

    44KB

  • memory/1380-75-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-81-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-82-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-83-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-86-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-85-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-84-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-87-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-109-0x0000000000723000-0x0000000000730000-memory.dmp
    Filesize

    52KB

  • memory/1380-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1380-385-0x0000000071EED000-0x0000000071EF8000-memory.dmp
    Filesize

    44KB

  • memory/1380-383-0x0000000071EED000-0x0000000071EF8000-memory.dmp
    Filesize

    44KB

  • memory/1380-55-0x0000000070F01000-0x0000000070F03000-memory.dmp
    Filesize

    8KB

  • memory/1728-221-0x0000000000000000-mapping.dmp
  • memory/2000-220-0x0000000000000000-mapping.dmp