Analysis

  • max time kernel
    102s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    31-01-2023 17:35

General

  • Target

    18cf59a39f2bcba65624698a5333a6cc.xls

  • Size

    374KB

  • MD5

    18cf59a39f2bcba65624698a5333a6cc

  • SHA1

    e36fee0800a5db7af08f1543a674cc36b4500eb9

  • SHA256

    7d4ca9f0993cb838b6918739f45623d466cb98a2217195685372dd8d76785066

  • SHA512

    edb40398bcec969ca82274eb8ac16ba84b80f871fd17f73e4b84151d1a9ca52f960c7fb51167a72f890b4bccca1480eaa7f5a5f9744d0cf4d4de04488c7300ac

  • SSDEEP

    6144:2XGSLCvXuzqAsQ4/OEl7B5hiEPpXlou8xuJ1TBFWVAth:SvgE2j

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 3 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\18cf59a39f2bcba65624698a5333a6cc.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:1272
    • 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:684
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1056
    • 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:1756
    • 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:1384

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/684-219-0x0000000000000000-mapping.dmp
  • memory/1056-222-0x0000000000000000-mapping.dmp
  • memory/1272-72-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1272-58-0x00000000767C1000-0x00000000767C3000-memory.dmp
    Filesize

    8KB

  • memory/1272-61-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-60-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-59-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-67-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-66-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-65-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-64-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-63-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-62-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-68-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-78-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-71-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-70-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-74-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-73-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-383-0x00000000726BD000-0x00000000726C8000-memory.dmp
    Filesize

    44KB

  • memory/1272-57-0x00000000726BD000-0x00000000726C8000-memory.dmp
    Filesize

    44KB

  • memory/1272-69-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-76-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-75-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-81-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-82-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-80-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-79-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-85-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-86-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-84-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-83-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-87-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-109-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-77-0x00000000007DA000-0x00000000007DE000-memory.dmp
    Filesize

    16KB

  • memory/1272-385-0x00000000726BD000-0x00000000726C8000-memory.dmp
    Filesize

    44KB

  • memory/1272-54-0x000000002FFB1000-0x000000002FFB4000-memory.dmp
    Filesize

    12KB

  • memory/1272-55-0x00000000716D1000-0x00000000716D3000-memory.dmp
    Filesize

    8KB

  • memory/1384-221-0x0000000000000000-mapping.dmp
  • memory/1756-220-0x0000000000000000-mapping.dmp