Analysis

  • max time kernel
    100s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 12:21

General

  • Target

    dcb68b8fe7cbba08c7ea48ebb66494668da72fff9b8bf1d693138b8d7809657e.xls

  • Size

    106KB

  • MD5

    31b08c99d7e8d6ca1bfdc06e2a87a17f

  • SHA1

    e3da1eceab782c6a10cc2e5a9ca87f1625e3454c

  • SHA256

    dcb68b8fe7cbba08c7ea48ebb66494668da72fff9b8bf1d693138b8d7809657e

  • SHA512

    f2539a651531832b30efd048f881c0e86a60e98a050a17b565c359381762b47d33c97227c32ac1c5451b1293e07cde3de44099f0616f30abeb3d44f2deb09c9c

  • SSDEEP

    1536:Q44440N4D59FjutbhImP8OIzoWVbrzQhhrITkiD2EuO/WwF1J8+vM2M/M7HT:rTILuWVbrzQLrITkD3M/U5kDT

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\dcb68b8fe7cbba08c7ea48ebb66494668da72fff9b8bf1d693138b8d7809657e.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:2004
    • 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:1900
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1648
    • 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:1508
    • 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:1940

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/1508-220-0x0000000000000000-mapping.dmp
  • memory/1648-222-0x0000000000000000-mapping.dmp
  • memory/1900-219-0x0000000000000000-mapping.dmp
  • memory/1940-221-0x0000000000000000-mapping.dmp
  • memory/2004-74-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-383-0x000000007298D000-0x0000000072998000-memory.dmp
    Filesize

    44KB

  • memory/2004-59-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-79-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-62-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-63-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-64-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-65-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-69-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-68-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-67-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-66-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-70-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-71-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-72-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-73-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-54-0x000000002F9B1000-0x000000002F9B4000-memory.dmp
    Filesize

    12KB

  • memory/2004-80-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-61-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-60-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-78-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-81-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-77-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-76-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-75-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-84-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-83-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-86-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-85-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-87-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-109-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-58-0x0000000075831000-0x0000000075833000-memory.dmp
    Filesize

    8KB

  • memory/2004-57-0x000000007298D000-0x0000000072998000-memory.dmp
    Filesize

    44KB

  • memory/2004-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2004-55-0x00000000719A1000-0x00000000719A3000-memory.dmp
    Filesize

    8KB

  • memory/2004-82-0x000000000050B000-0x000000000050F000-memory.dmp
    Filesize

    16KB

  • memory/2004-385-0x000000007298D000-0x0000000072998000-memory.dmp
    Filesize

    44KB