Analysis Overview
SHA256
eb872a057436f78449d2eb3149fa07ec7278ccd1797e5038a734966a2f4f430c
Threat Level: Known bad
The file 8cc042c84aa3b910a6a8af2b9e5d64b0N.exe was found to be: Known bad.
Malicious Activity Summary
Modifies visiblity of hidden/system files in Explorer
Loads dropped DLL
Executes dropped EXE
Adds Run key to start application
Drops file in System32 directory
Drops file in Windows directory
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Scheduled Task/Job: Scheduled Task
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-25 09:17
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-25 09:17
Reported
2024-08-25 09:19
Platform
win10v2004-20240802-en
Max time kernel
120s
Max time network
102s
Command Line
Signatures
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" | \??\c:\windows\resources\svchost.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" | \??\c:\windows\resources\svchost.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\explorer.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\explorer.exe | \??\c:\windows\resources\svchost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\windows\resources\themes\explorer.exe | C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe | N/A |
| File opened for modification | \??\c:\windows\resources\spoolsv.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
| File opened for modification | \??\c:\windows\resources\svchost.exe | \??\c:\windows\resources\spoolsv.exe | N/A |
| File opened for modification | C:\Windows\Resources\tjud.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\resources\spoolsv.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\resources\svchost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\resources\spoolsv.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe
"C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe"
\??\c:\windows\resources\themes\explorer.exe
c:\windows\resources\themes\explorer.exe
\??\c:\windows\resources\spoolsv.exe
c:\windows\resources\spoolsv.exe SE
\??\c:\windows\resources\svchost.exe
c:\windows\resources\svchost.exe
\??\c:\windows\resources\spoolsv.exe
c:\windows\resources\spoolsv.exe PR
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 45.19.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
Files
memory/2672-0-0x0000000000400000-0x000000000042F000-memory.dmp
C:\Windows\Resources\Themes\explorer.exe
| MD5 | 5468c5e5ccf6a653b2d69565a2ef909c |
| SHA1 | 23def32346e86eeb0a747a105d53e31edfc01a8e |
| SHA256 | 55886492daafbaa35aee2e69269d75fc8695967b714889e3f75d3138c3cb488d |
| SHA512 | c198d66e1cc8ec620f9f6a7d0aae5b68cad32d282c4973a0cbdccbce068b75b9254d2db489b2da45a2fea06de02cd114b5877ef4e00d5ee49d048de374f34a4d |
C:\Windows\Resources\spoolsv.exe
| MD5 | 8991892937e4399848be22a7c171cb84 |
| SHA1 | d1b1942431ec897a13b5229a6243422b695a8a9e |
| SHA256 | 70f1a58a7d376d93c16e035d2433fa47afeb8c2370b622004fc51fb7c96e8498 |
| SHA512 | 714c8699f92002996f112f7daa2a910c4cd175c75524c967c25373d48f4844d6b3532b7a39e29d2f89c22eb646f5a57753da14c0b99ec36f77a9e8ed4d26adbd |
C:\Windows\Resources\svchost.exe
| MD5 | 04cf5421b29ccb4b99ce9dd269fed599 |
| SHA1 | b8fdf3113599d1d7ce30c57339af89a1f4c5d442 |
| SHA256 | 3df377947f0e63019b2cdf95d0803988ceda8d79dd934ddfd74a6d25f3fc9b39 |
| SHA512 | c62703d4a8bdda5dfb23b9c7df5e9679b5eb4acf9426ec00aeca21357e37856eb7616fbf051527c2dda95e444fe2f2d8f24eb1893f7b6c500c321b4463c0ebfa |
memory/1716-32-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4776-33-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2672-34-0x0000000000400000-0x000000000042F000-memory.dmp
memory/3056-35-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2132-36-0x0000000000400000-0x000000000042F000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-25 09:17
Reported
2024-08-25 09:19
Platform
win7-20240729-en
Max time kernel
120s
Max time network
16s
Command Line
Signatures
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" | \??\c:\windows\resources\svchost.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" | \??\c:\windows\resources\svchost.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\explorer.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\explorer.exe | \??\c:\windows\resources\svchost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\windows\resources\spoolsv.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
| File opened for modification | \??\c:\windows\resources\svchost.exe | \??\c:\windows\resources\spoolsv.exe | N/A |
| File opened for modification | C:\Windows\Resources\tjud.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
| File opened for modification | \??\c:\windows\resources\themes\explorer.exe | C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\schtasks.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\resources\spoolsv.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\resources\svchost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\resources\spoolsv.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\schtasks.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe
"C:\Users\Admin\AppData\Local\Temp\8cc042c84aa3b910a6a8af2b9e5d64b0N.exe"
\??\c:\windows\resources\themes\explorer.exe
c:\windows\resources\themes\explorer.exe
\??\c:\windows\resources\spoolsv.exe
c:\windows\resources\spoolsv.exe SE
\??\c:\windows\resources\svchost.exe
c:\windows\resources\svchost.exe
\??\c:\windows\resources\spoolsv.exe
c:\windows\resources\spoolsv.exe PR
C:\Windows\Explorer.exe
C:\Windows\Explorer.exe
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 09:19 /f
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 09:20 /f
Network
Files
memory/2464-0-0x0000000000400000-0x000000000042F000-memory.dmp
\Windows\Resources\Themes\explorer.exe
| MD5 | 61ee523c148bb0d0d860503e2d5f927d |
| SHA1 | ca973f064f16ab8c95711519b8abb9862ba7e049 |
| SHA256 | 0294c939d8c9ed19001e0332d75b140982ae726b100588a74b25ab7a4e919d9f |
| SHA512 | 753433ffae989703c7ffc5cfc80411bcf77dd21797992a26e20182fe27b81524fb4ee98fde934bd514c9948550310c163e34f9f9c8383963a93e843989c8faeb |
memory/2464-14-0x00000000003C0000-0x00000000003EF000-memory.dmp
memory/2464-13-0x00000000003C0000-0x00000000003EF000-memory.dmp
C:\Windows\Resources\spoolsv.exe
| MD5 | f19472a94e388bebf74be25e601ae22a |
| SHA1 | 87e8f90af52a418d8390717387d9c755aea5e5f0 |
| SHA256 | cee5840905bbbd3b6153f8026273747389313be8b651d4539b8230d8ff8f710b |
| SHA512 | a84c4aa4a82d679fb0d1714b805595ac8324b4e1da817b0ea74131076bfd289debd480980df2dd4e1a226e4a433408c959fd78e85b6ddda3b7671f20ed8aa273 |
\Windows\Resources\svchost.exe
| MD5 | bb7411e08801a5ea15dd172d6818ec5b |
| SHA1 | 9206e9e998db937021600a6fa0f0904385813ca4 |
| SHA256 | 1113e138a783ca58cddeda3a4d0f77d0617d7412b823570e96aa5e2d3ca5c037 |
| SHA512 | eb6e0e383f441e572b95238300e48908b71176c10e7b3c830a0cb44063a4e7b9ef8290e9c4c3a44d2fef882e42bb7612283706c00fb76ab4b7278a9c7d416de5 |
memory/2892-42-0x0000000000270000-0x000000000029F000-memory.dmp
memory/2892-41-0x0000000000270000-0x000000000029F000-memory.dmp
memory/3000-53-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2892-54-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2464-55-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1620-56-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2864-57-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2864-58-0x0000000000390000-0x00000000003BF000-memory.dmp