Analysis

  • max time kernel
    131s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 03:09

General

  • Target

    a9cd9a4b06a19b06652322bfffdced032c3f0a62febdb843710eeb1ac429e575.xls

  • Size

    238KB

  • MD5

    7c24257cb1f19d9fe394badacb3042c3

  • SHA1

    99010bb14c652fd52ddb6741af088db8a235664f

  • SHA256

    a9cd9a4b06a19b06652322bfffdced032c3f0a62febdb843710eeb1ac429e575

  • SHA512

    c7fbd0ed516c8f1f491d49f660426d6e8d3ffee8ec28d176152db6a4fe68b796a7db0685de3a026756a8741083904113800c333207ec92835dd0f456f74daa34

  • SSDEEP

    3072:DMTfveRF1qINGfr42jcc0lbxOKtAJtXw34:DMTfveRF1qYcV

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\a9cd9a4b06a19b06652322bfffdced032c3f0a62febdb843710eeb1ac429e575.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:768
    • 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:1464
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1684
    • 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:1516
    • 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:1688

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/768-54-0x000000002F9C1000-0x000000002F9C4000-memory.dmp
    Filesize

    12KB

  • memory/768-55-0x00000000712F1000-0x00000000712F3000-memory.dmp
    Filesize

    8KB

  • memory/768-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/768-57-0x00000000722DD000-0x00000000722E8000-memory.dmp
    Filesize

    44KB

  • memory/768-58-0x0000000076091000-0x0000000076093000-memory.dmp
    Filesize

    8KB

  • memory/768-223-0x00000000722DD000-0x00000000722E8000-memory.dmp
    Filesize

    44KB

  • memory/768-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/768-385-0x00000000722DD000-0x00000000722E8000-memory.dmp
    Filesize

    44KB

  • memory/1464-219-0x0000000000000000-mapping.dmp
  • memory/1516-220-0x0000000000000000-mapping.dmp
  • memory/1684-222-0x0000000000000000-mapping.dmp
  • memory/1688-221-0x0000000000000000-mapping.dmp