Analysis

  • max time kernel
    105s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 12:21

General

  • Target

    5c6078df58ac50893084a2627a3219ecdeb8847927165d3f340577a8f9e21ba8.xls

  • Size

    87KB

  • MD5

    65399b4f42bec9633da1d9bf8dde26e4

  • SHA1

    d7b53907e4fadd2331b718fef59ac4d7b49d371c

  • SHA256

    5c6078df58ac50893084a2627a3219ecdeb8847927165d3f340577a8f9e21ba8

  • SHA512

    a36ed1095424eb0ad7915d42c7ad590ef190be3774712c48e13927a551d0297628b6a2046f65b1e5554b57b60aea337bca773a2786c93c92324375311cecf855

  • SSDEEP

    1536:b1XTNhqhg+11P6J2jcc0lbxOvTgZj2EecJzXwpx9Qb:a8J2jcc0lbxOrfEdJzXwNQb

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\5c6078df58ac50893084a2627a3219ecdeb8847927165d3f340577a8f9e21ba8.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:2040
    • 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:560
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:900
    • 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:1164
    • 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:384

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/384-61-0x0000000000000000-mapping.dmp
  • memory/560-59-0x0000000000000000-mapping.dmp
  • memory/900-62-0x0000000000000000-mapping.dmp
  • memory/1164-60-0x0000000000000000-mapping.dmp
  • memory/2040-54-0x000000002F9B1000-0x000000002F9B4000-memory.dmp
    Filesize

    12KB

  • memory/2040-55-0x0000000071301000-0x0000000071303000-memory.dmp
    Filesize

    8KB

  • memory/2040-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2040-57-0x00000000722ED000-0x00000000722F8000-memory.dmp
    Filesize

    44KB

  • memory/2040-58-0x0000000075591000-0x0000000075593000-memory.dmp
    Filesize

    8KB

  • memory/2040-63-0x00000000722ED000-0x00000000722F8000-memory.dmp
    Filesize

    44KB

  • memory/2040-64-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2040-65-0x00000000722ED000-0x00000000722F8000-memory.dmp
    Filesize

    44KB