Analysis

  • max time kernel
    105s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:25

General

  • Target

    8c8f1d4605caff4bdbcc8b417510f1753ba7de3825bd953d00821f96bfc0bbf0.xls

  • Size

    87KB

  • MD5

    640f66b9f6be82304effdd49bc45d8d3

  • SHA1

    e3152f21a47642e3a0cd2eca998e5c670a20b941

  • SHA256

    8c8f1d4605caff4bdbcc8b417510f1753ba7de3825bd953d00821f96bfc0bbf0

  • SHA512

    93330b916e719277343d83d97508f7843c1ace9c06ea24d55ea7ac73a6beeee1d144a00b97c7d75bfb0de9e685e474b12e352c1785db8ba7440b3def6d87e770

  • SSDEEP

    1536:qOOOO6mfULFkxR2gpx2jcc0lbxOvTgZfM88ScJYXw4rZC:Jq2jcc0lbxOrRjhJYXwGZC

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\8c8f1d4605caff4bdbcc8b417510f1753ba7de3825bd953d00821f96bfc0bbf0.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:864
    • 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:1624
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1532
    • 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:888
    • 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:568

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/568-215-0x0000000000000000-mapping.dmp
  • memory/864-54-0x000000002F0D1000-0x000000002F0D4000-memory.dmp
    Filesize

    12KB

  • memory/864-55-0x0000000071CD1000-0x0000000071CD3000-memory.dmp
    Filesize

    8KB

  • memory/864-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/864-57-0x0000000072CBD000-0x0000000072CC8000-memory.dmp
    Filesize

    44KB

  • memory/864-58-0x0000000076831000-0x0000000076833000-memory.dmp
    Filesize

    8KB

  • memory/864-217-0x0000000072CBD000-0x0000000072CC8000-memory.dmp
    Filesize

    44KB

  • memory/864-372-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/864-373-0x0000000072CBD000-0x0000000072CC8000-memory.dmp
    Filesize

    44KB

  • memory/888-214-0x0000000000000000-mapping.dmp
  • memory/1532-216-0x0000000000000000-mapping.dmp
  • memory/1624-213-0x0000000000000000-mapping.dmp