Analysis

  • max time kernel
    113s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 11:36

General

  • Target

    372ed5de4a91fed82ac7aa1c4e8e2df7f0610510331dd7ebed9f6bbcb7bb1cf5.xls

  • Size

    109KB

  • MD5

    d0c3bd89f949b3f0427a11a9cbcc2e9b

  • SHA1

    925eec4e658b2ba0203a15b9917986c0b51fef17

  • SHA256

    372ed5de4a91fed82ac7aa1c4e8e2df7f0610510331dd7ebed9f6bbcb7bb1cf5

  • SHA512

    658d8710c592401a63204b33dbfce7a8d5b0d59b9286a8bb3497b171d83da7f8a8b6ff17e29ed1e5e68147c212bed37372ae6adc72128525a3c5140938e1ab9c

  • SSDEEP

    1536:7lllJ1NrYNzWV3W1MLb6zQ7ITkR62laM88dcJtXwFfM2M/MMUzTycMufi:8zWVGDzQ7ITk9FjWJtXwO5kXVO

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\372ed5de4a91fed82ac7aa1c4e8e2df7f0610510331dd7ebed9f6bbcb7bb1cf5.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:992
    • 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:668
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1068
    • 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:828
    • 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:660

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/660-221-0x0000000000000000-mapping.dmp
  • memory/668-219-0x0000000000000000-mapping.dmp
  • memory/828-220-0x0000000000000000-mapping.dmp
  • memory/992-54-0x000000002FE71000-0x000000002FE74000-memory.dmp
    Filesize

    12KB

  • memory/992-55-0x0000000070F61000-0x0000000070F63000-memory.dmp
    Filesize

    8KB

  • memory/992-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/992-57-0x0000000071F4D000-0x0000000071F58000-memory.dmp
    Filesize

    44KB

  • memory/992-58-0x0000000075DA1000-0x0000000075DA3000-memory.dmp
    Filesize

    8KB

  • memory/992-383-0x0000000071F4D000-0x0000000071F58000-memory.dmp
    Filesize

    44KB

  • memory/992-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/992-385-0x0000000071F4D000-0x0000000071F58000-memory.dmp
    Filesize

    44KB

  • memory/1068-222-0x0000000000000000-mapping.dmp