Analysis

  • max time kernel
    101s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-01-2023 17:36

General

  • Target

    347b6c6773dea2ba535b103b71eee2ac.xls

  • Size

    364KB

  • MD5

    347b6c6773dea2ba535b103b71eee2ac

  • SHA1

    0cfc0bc896b565e0956851c09627f21d31a885b2

  • SHA256

    380c84d48cd130ba3d784421c9a175debe7c7108db06da283b44549cccdfd77d

  • SHA512

    7f24626d0876d2ca1bc7e1c5b3fefd19e357b05aa03daab511379f571aeabde8d704cd1060c3a7b6f5d6c0d070b7ff79cf58ec701df6d1580d1d313f601eec58

  • SSDEEP

    3072:KXBlllllllllllllllllllllllllXO7WXW1+cCUQCiWqAZffIXdHMnIr2FhqDow2:97WXWkWvfhWYlF73k

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.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\347b6c6773dea2ba535b103b71eee2ac.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3036
    • C:\Windows\system32\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:4512
      • C:\Windows\system32\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:3092
    • C:\Windows\system32\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:616
    • C:\Windows\system32\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:1904

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

1
T1158

Defense Evasion

Hidden Files and Directories

1
T1158

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/616-140-0x0000000000000000-mapping.dmp
  • memory/1904-141-0x0000000000000000-mapping.dmp
  • memory/3036-135-0x00007FFDBE670000-0x00007FFDBE680000-memory.dmp
    Filesize

    64KB

  • memory/3036-132-0x00007FFDBE670000-0x00007FFDBE680000-memory.dmp
    Filesize

    64KB

  • memory/3036-136-0x00007FFDBE670000-0x00007FFDBE680000-memory.dmp
    Filesize

    64KB

  • memory/3036-137-0x00007FFDBBF80000-0x00007FFDBBF90000-memory.dmp
    Filesize

    64KB

  • memory/3036-138-0x00007FFDBBF80000-0x00007FFDBBF90000-memory.dmp
    Filesize

    64KB

  • memory/3036-134-0x00007FFDBE670000-0x00007FFDBE680000-memory.dmp
    Filesize

    64KB

  • memory/3036-133-0x00007FFDBE670000-0x00007FFDBE680000-memory.dmp
    Filesize

    64KB

  • memory/3036-144-0x00007FFDBE670000-0x00007FFDBE680000-memory.dmp
    Filesize

    64KB

  • memory/3036-145-0x00007FFDBE670000-0x00007FFDBE680000-memory.dmp
    Filesize

    64KB

  • memory/3036-146-0x00007FFDBE670000-0x00007FFDBE680000-memory.dmp
    Filesize

    64KB

  • memory/3036-147-0x00007FFDBE670000-0x00007FFDBE680000-memory.dmp
    Filesize

    64KB

  • memory/3092-142-0x0000000000000000-mapping.dmp
  • memory/4512-139-0x0000000000000000-mapping.dmp