Analysis Overview
SHA256
fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466
Threat Level: Known bad
The file fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466 was found to be: Known bad.
Malicious Activity Summary
Modifies visiblity of hidden/system files in Explorer
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
Drops file in System32 directory
Drops file in Windows directory
Unsigned PE
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-01 05:37
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-01 05:37
Reported
2024-06-01 05:40
Platform
win7-20231129-en
Max time kernel
150s
Max time network
119s
Command Line
Signatures
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\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\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.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\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\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.exe | N/A |
Creates scheduled task(s)
| 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 |
| 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\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.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\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.exe
"C:\Users\Admin\AppData\Local\Temp\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.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 05:39 /f
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 05:40 /f
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 05:41 /f
Network
Files
memory/1632-0-0x0000000000400000-0x000000000041F000-memory.dmp
\Windows\Resources\Themes\explorer.exe
| MD5 | a56470d0f1a0e8f0e0255281122c4d1a |
| SHA1 | 9bef35270ba4c1b50f11ed52a76341c0718c69ed |
| SHA256 | 5acceba11b105121b5415a8f69bf523f40f3be21ede92d2f72131547d047224d |
| SHA512 | 7f8bbf142a12f913ff02d2252fd4c598a5a50f3bf56f820c2247b32febd8d181dec36a4310cc9278e3d1dd53a26f493aa829f20365e155dd637b4018023a8023 |
memory/1632-10-0x0000000000290000-0x00000000002AF000-memory.dmp
\Windows\Resources\spoolsv.exe
| MD5 | 366eb529390c9ab0b9a30a6dec9bf89a |
| SHA1 | dd69f237c5b45fd1be90dfe9fc058e48cc638da1 |
| SHA256 | da7e0d810eb115efc5688a817e139b7d2f4467de27ec0530e8e8dff1515f9985 |
| SHA512 | 307b2902fd0dc507500b04ecf1f5c1bc0723eeedcd805d46a0960b0f9114f1a8819d9e09b96cf56e832889604e2ea6fc5da636c554489ae4f947333f08203f01 |
memory/2216-21-0x0000000001BC0000-0x0000000001BDF000-memory.dmp
\Windows\Resources\svchost.exe
| MD5 | fb9529b2c4a8e49e31d33f76c5129a06 |
| SHA1 | 8c00e0d7f2ed1e24dcf2adcdcfe2646452fc3a5f |
| SHA256 | 57b6bd55cd4444eb5c41e92d41901b8b5c472c7988aca13af8c75cb5f7cfc7d1 |
| SHA512 | 2b5070ca21c4a1d4fbe7843fecb233991fc217c6d238fda624ffd6bcb4c39c9e327eb2a9306eb62e5347cc7b2a0a2cabd41906f75fb903073a9df390e4e85668 |
memory/320-38-0x00000000003D0000-0x00000000003EF000-memory.dmp
memory/1556-42-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1632-43-0x0000000000400000-0x000000000041F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-01 05:37
Reported
2024-06-01 05:40
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
150s
Command Line
Signatures
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\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\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.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 |
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\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.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\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.exe
"C:\Users\Admin\AppData\Local\Temp\fd746469374df18f812e7cbf803cd3a626f19c4602ff5b9b4991c686fd4c8466.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 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 16.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 131.109.69.13.in-addr.arpa | udp |
Files
memory/2564-0-0x0000000000400000-0x000000000041F000-memory.dmp
C:\Windows\Resources\Themes\explorer.exe
| MD5 | aa450174d15d16f084c41dfe59ea7b76 |
| SHA1 | 472fb1a3b6e2f908e8381c3495d3e8a7d34e7fdb |
| SHA256 | 0ced3150fb1d9f9016b4c1c418553c3593bcbb4a7aa254e66b371ee0c241dfbf |
| SHA512 | a690210c64c58c36de0b0846129a2c5adebdedce561dff068514bdc68f4a25946730e658edf3c95a669259643b84bb5db8bf5355b1b0b02e1d4e219c7b19cfdf |
memory/4352-8-0x0000000000400000-0x000000000041F000-memory.dmp
C:\Windows\Resources\spoolsv.exe
| MD5 | 46bf70a8cca0bf61dfdb9563efa2c9bf |
| SHA1 | 55ac6716ec7ebe440aef4e315d5df766260d2e92 |
| SHA256 | 0e242ff479876d83b6fde31f9419a2b9de72a19b949f73cf18fad55cfcb131ff |
| SHA512 | 99ec9e1cfd410a26ce4a056f7427a4b6680c88b6fdebcaf4794ae51cbaae5e126491846ddbb4e517ad307ef0e1b1ed881056b2662a5308269692e5223bef81aa |
C:\Windows\Resources\svchost.exe
| MD5 | 5a98aa8e38cb61d9eed7767accf58229 |
| SHA1 | 35f85ca01882c7ab8f62032226ba1dbe46be3f5f |
| SHA256 | b220400d30047511871f7f6c08574040fa5a4bdc1f7d318cba7017f7d0c18982 |
| SHA512 | dea7c2cf0555442cfb60497edbd35c1f5449e7b0373bc822e3ab02f4226abb3b4c27bfdc027a687c9daeada8fd108285238a58ab05ff8a47ab285a5ffdb61ef6 |
memory/1828-33-0x0000000000400000-0x000000000041F000-memory.dmp
memory/704-34-0x0000000000400000-0x000000000041F000-memory.dmp
memory/2564-35-0x0000000000400000-0x000000000041F000-memory.dmp