Analysis

  • max time kernel
    104s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    14-03-2023 08:54

General

  • Target

    c375ca5ba420b9cf96ab566fd276b4b6.xls

  • Size

    1.3MB

  • MD5

    c375ca5ba420b9cf96ab566fd276b4b6

  • SHA1

    7759a1370a5eca8d9edda523c32d9c7f90883258

  • SHA256

    825df25db4e5ed8af1ea2841ad2942b201777dd570e036c2da3b8dce083da198

  • SHA512

    b686b93af6fd373f8475a960948c2aaff329e2e93b7ac6844394d0d0bc8fe3b4fad182ec4180a36b1560c1e54b709e7e0ef6fc93f0769d9e84d7336b947bb86e

  • SSDEEP

    24576:Q5o76oMMouIqjwUalD6crmnwu9RG/VFRj1Kn1abTdGchqecFcJgORqoX:MMbIqjtawvwu9RGdrjQn1afMcYMbqoX

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\c375ca5ba420b9cf96ab566fd276b4b6.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:1604
    • 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:592
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:744
    • 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:1496
    • 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:688

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/1604-54-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1604-55-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-56-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-57-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-58-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-59-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-62-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-61-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-63-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-65-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-64-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-66-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-67-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-69-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-70-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-71-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-72-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-75-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-74-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-77-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-78-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-79-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-80-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-76-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-81-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-82-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-73-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-68-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-60-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-83-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB

  • memory/1604-105-0x0000000000300000-0x0000000000400000-memory.dmp
    Filesize

    1024KB