Analysis

  • max time kernel
    102s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    01-03-2023 07:03

General

  • Target

    94d17a26c08b6c26b6f0074d760a29d8.xls

  • Size

    91KB

  • MD5

    94d17a26c08b6c26b6f0074d760a29d8

  • SHA1

    d98459e069eebe97c99c378f1d21852b5078f820

  • SHA256

    bc1bf397020aad3fd51dc3d782eb82152ec3d9631eec0d76352a884bdc375447

  • SHA512

    1d96a85ef66700c8d4d3af42e5324d4048e970a519386bba45331d01ef652cba7686ccc7a003efb846772804acbe0a645a86508c2095dd1406827d88f8cd6e40

  • SSDEEP

    1536:l7777PDcdR9gt2ji2jcc0lbxOqTgZfcfreLWt2XKhgB+:iGl2jcc0lbxOKJjSag+

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\94d17a26c08b6c26b6f0074d760a29d8.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:1400
    • 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:864
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1448
    • 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:976
    • 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/1400-54-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1400-61-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-62-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-63-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-65-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-64-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-67-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-66-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-68-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-69-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-70-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-71-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-72-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-73-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-74-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-75-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-76-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-77-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-79-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-78-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-81-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-80-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-82-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-83-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-87-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB

  • memory/1400-105-0x0000000000420000-0x0000000000520000-memory.dmp
    Filesize

    1024KB