Analysis

  • max time kernel
    105s
  • 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 19:58

General

  • Target

    b3de07df532adb539a81002eae40f60546e3534b6a2732997f05f6d1dbe33ca0.xls

  • Size

    85KB

  • MD5

    d8300f621723ac7f581b7ae76a779e9a

  • SHA1

    8e4ec65e7b47cfb2bb75fc136af11eac726c6cdb

  • SHA256

    b3de07df532adb539a81002eae40f60546e3534b6a2732997f05f6d1dbe33ca0

  • SHA512

    61a3113b90234fb576fc62ee74afb36b90ffdfb7d98c14de2a572d208c89a997e2a74d6ac6a7b522d9078b9d0a538aa8ceae3f7b8f7ebf968cce2f63a02e2017

  • SSDEEP

    1536:LPPP7HY3jsWWVbkzQ7ITkygzA2KcCOU/WwF1Mo4I:2WVbkzQ7ITky0XDWl4I

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\b3de07df532adb539a81002eae40f60546e3534b6a2732997f05f6d1dbe33ca0.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:1216
    • 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:920
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1704
    • 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:1488
    • 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:1788

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/920-219-0x0000000000000000-mapping.dmp
  • memory/1216-268-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/1216-391-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1216-270-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1216-58-0x0000000074DE1000-0x0000000074DE3000-memory.dmp
    Filesize

    8KB

  • memory/1216-55-0x0000000070FD1000-0x0000000070FD3000-memory.dmp
    Filesize

    8KB

  • memory/1216-269-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1216-395-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1216-222-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1216-362-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1216-54-0x000000002F5E1000-0x000000002F5E4000-memory.dmp
    Filesize

    12KB

  • memory/1216-396-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/1216-57-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/1216-394-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1216-363-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1216-366-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1216-390-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1216-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1216-392-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1216-393-0x0000000005500000-0x0000000005600000-memory.dmp
    Filesize

    1024KB

  • memory/1488-220-0x0000000000000000-mapping.dmp
  • memory/1704-223-0x0000000000000000-mapping.dmp
  • memory/1788-221-0x0000000000000000-mapping.dmp