Analysis Overview
SHA256
040832704269a67e4d63b3c0819eba3fbb7274cd45ac8a9e481850367d28fe24
Threat Level: Known bad
The file 6d86f235e44fdf11cab8e49f7c722b18 was found to be: Known bad.
Malicious Activity Summary
Process spawned unexpected child process
Suspicious Office macro
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Modifies Internet Explorer settings
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-22 05:03
Signatures
Suspicious Office macro
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-22 05:03
Reported
2023-12-23 10:10
Platform
win7-20231129-en
Max time kernel
0s
Max time network
121s
Command Line
Signatures
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\Toolbar | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\MenuExt | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
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\6d86f235e44fdf11cab8e49f7c722b18.xls
C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\Xjz.txt,DllRegisterServer
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | skill.fashion | udp |
| US | 8.8.8.8:53 | syracuse.best | udp |
Files
memory/2116-1-0x00000000724DD000-0x00000000724E8000-memory.dmp
memory/2116-0-0x000000005FFF0000-0x0000000060000000-memory.dmp
memory/2116-2-0x00000000724DD000-0x00000000724E8000-memory.dmp
memory/2116-3-0x000000005FFF0000-0x0000000060000000-memory.dmp
memory/2116-4-0x00000000724DD000-0x00000000724E8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-22 05:03
Reported
2023-12-23 10:11
Platform
win10v2004-20231222-en
Max time kernel
149s
Max time network
126s
Command Line
Signatures
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process | N/A | C:\Windows\explorer.exe | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000_Classes\Local Settings | C:\Windows\explorer.exe | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 636 wrote to memory of 2324 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\explorer.exe |
| PID 636 wrote to memory of 2324 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\explorer.exe |
| PID 1256 wrote to memory of 684 | N/A | C:\Windows\explorer.exe | C:\Windows\System32\WScript.exe |
| PID 1256 wrote to memory of 684 | N/A | C:\Windows\explorer.exe | C:\Windows\System32\WScript.exe |
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\6d86f235e44fdf11cab8e49f7c722b18.xls"
C:\Windows\explorer.exe
explorer.exe C:\Users\Public\Documents\EcrKY18X.vbs
C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\EcrKY18X.vbs"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | skill.fashion | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.53.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.179.89.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
Files
memory/636-4-0x00007FF91A790000-0x00007FF91A7A0000-memory.dmp
memory/636-3-0x00007FF91A790000-0x00007FF91A7A0000-memory.dmp
memory/636-7-0x00007FF917F10000-0x00007FF917F20000-memory.dmp
memory/636-5-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-9-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-10-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-11-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-8-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-6-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-2-0x00007FF91A790000-0x00007FF91A7A0000-memory.dmp
memory/636-14-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-15-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-13-0x00007FF917F10000-0x00007FF917F20000-memory.dmp
memory/636-16-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-12-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-17-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-18-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-19-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-20-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-21-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-22-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-1-0x00007FF91A790000-0x00007FF91A7A0000-memory.dmp
memory/636-23-0x00007FF95A710000-0x00007FF95A905000-memory.dmp
memory/636-0-0x00007FF91A790000-0x00007FF91A7A0000-memory.dmp
C:\Users\Public\Documents\EcrKY18X.vbs
| MD5 | 464e825e4c346e99cfbfb9a058a92ac5 |
| SHA1 | 46ad79f5ab1fc8b752e7f70c6d5f186cc65b6cbc |
| SHA256 | a8ff67d8ce22a5d1fbbd86d1ceece96008bf8ebad2c3ec9cbac61c527d19dbc0 |
| SHA512 | 57a080ae201b88c9f86d7fd5016003d358196ec05d6b7f73f3629de91bb8629dc5c0543d442652ed34a20f86c79cf735b3eec1211e77dd8e8cdaf4f55e62fad2 |
memory/636-31-0x00007FF95A710000-0x00007FF95A905000-memory.dmp