Analysis

  • max time kernel
    141s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 02:38

General

  • Target

    57f26eedbcab9dfb3e6c77a55a5b5d2775294a646c7d84f28bff3a544fe77bc5.xls

  • Size

    120KB

  • MD5

    386e3f9282db8a3e18abb4a15faf0a62

  • SHA1

    f8c1cd7333ec6434b5a814fe5160a650c9ea567c

  • SHA256

    57f26eedbcab9dfb3e6c77a55a5b5d2775294a646c7d84f28bff3a544fe77bc5

  • SHA512

    ba82811ae7267dbcac1a46e642f513a2c94f0fed9fa4f19a978e026a0fd1f3b9c7beda795a30539f268c0e09f507793783f409f48fe15a3dee28d3200220c3d9

  • SSDEEP

    3072:O5hopbWi+WVbrz07ITkDsjhJtXwe5kiVj:dWqJ

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\57f26eedbcab9dfb3e6c77a55a5b5d2775294a646c7d84f28bff3a544fe77bc5.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:1732
    • 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:836
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:688
    • 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:748
    • 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:1812

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/688-223-0x0000000000000000-mapping.dmp
  • memory/748-221-0x0000000000000000-mapping.dmp
  • memory/836-220-0x0000000000000000-mapping.dmp
  • memory/1732-54-0x000000002F921000-0x000000002F924000-memory.dmp
    Filesize

    12KB

  • memory/1732-55-0x00000000715E1000-0x00000000715E3000-memory.dmp
    Filesize

    8KB

  • memory/1732-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1732-57-0x00000000725CD000-0x00000000725D8000-memory.dmp
    Filesize

    44KB

  • memory/1732-58-0x0000000075BE1000-0x0000000075BE3000-memory.dmp
    Filesize

    8KB

  • memory/1732-59-0x00000000725CD000-0x00000000725D8000-memory.dmp
    Filesize

    44KB

  • memory/1732-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1732-385-0x00000000725CD000-0x00000000725D8000-memory.dmp
    Filesize

    44KB

  • memory/1812-222-0x0000000000000000-mapping.dmp