Analysis Overview
SHA256
af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94
Threat Level: Known bad
The file af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94 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
System Location Discovery: System Language Discovery
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
2024-11-17 08:24
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-17 08:24
Reported
2024-11-17 08:27
Platform
win10v2004-20241007-en
Max time kernel
150s
Max time network
151s
Command Line
Signatures
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\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\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.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\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.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\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.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\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.exe
"C:\Users\Admin\AppData\Local\Temp\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.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 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/448-0-0x0000000000400000-0x000000000041F000-memory.dmp
C:\Windows\Resources\Themes\explorer.exe
| MD5 | 0feec4d4d59ed37fdd98cdd6ddcbb51b |
| SHA1 | 3614a1b9a47da1115a8ba8af02e306c27bfecdb5 |
| SHA256 | 54cdcff47995bbf7f00a55888ccdb2e7050367247c319fdfb724fb58809766db |
| SHA512 | f9e5910edb48cdd900b3de30b9f80eb560492a2ddb1306d42906bbb990d76bab93e299ec933a6e66e4d9eb7b96bce0a7e02a2ad36e754028911a493aff21a432 |
C:\Windows\Resources\spoolsv.exe
| MD5 | f9b1b9d116d4170a864c8b24f03c3859 |
| SHA1 | 5d149d509b429a620375856d5c26247a9ea0fa4b |
| SHA256 | cda8e4dec587a08ecfc89c0f8ab02febfcbec77ece40fbbe75fa0f964fcca338 |
| SHA512 | 633800bfde868755d264bbe6f0b396da702ff8ddafa7c172bd1993e8231201d345a32800eb5329d4d92e9bbfd609d05d438d4e839b71d416364ce3e4f95bd4cb |
C:\Windows\Resources\svchost.exe
| MD5 | 688c873ec3c8192a5a3bbd189ddcfe25 |
| SHA1 | 2b95e73333b38f0239298ea3e4fc85ba717456bf |
| SHA256 | 4a4373bc4138f91b2967845717a453c3743afe809bdd384a9feb6690bf48c27c |
| SHA512 | 5ba4b2e15691d700bf68578acbca5866dd841d76801dd01e0ab42f3d6466105b115ff6b07cfaa5a1c5936a30605cac198c9ed840be2753c62860d88b93ba66c2 |
memory/2016-32-0x0000000000400000-0x000000000041F000-memory.dmp
memory/228-33-0x0000000000400000-0x000000000041F000-memory.dmp
memory/448-34-0x0000000000400000-0x000000000041F000-memory.dmp
memory/5060-35-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3808-36-0x0000000000400000-0x000000000041F000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-17 08:24
Reported
2024-11-17 08:27
Platform
win7-20240903-en
Max time kernel
150s
Max time network
122s
Command Line
Signatures
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\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\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.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\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 |
| 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 |
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\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\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.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 |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| 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 |
| 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:\Windows\SysWOW64\schtasks.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.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 |
| 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\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.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\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.exe
"C:\Users\Admin\AppData\Local\Temp\af9a08fb790c568b6e8ad8357f2fa1febdf9b7267d7720ea2e51576d2bd7ba94.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 08:26 /f
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 08:27 /f
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 08:28 /f
Network
Files
memory/1868-0-0x0000000000400000-0x000000000041F000-memory.dmp
\Windows\Resources\Themes\explorer.exe
| MD5 | 6eea316962b66e53374f20901a805ab1 |
| SHA1 | 0d7417183dd7296dc84b78c6da765bdeee0f867d |
| SHA256 | ec43e30fe75683cb89c93af8383ddc8b1f5f7f5bc30c8bcde71bc69b41462bf8 |
| SHA512 | 78d12ecc876695861bf1ac466c81bceeb58b6b2b6cbd35ada9b30f94e4c5dcba83ccba0511b9c4c0e4fc43b4501627d8e161d47e7ecbb94f06b95a81e098dc0c |
C:\Windows\Resources\spoolsv.exe
| MD5 | bbc9de349fca53405c501a1e18b14e72 |
| SHA1 | 828680086341e04ef301a06c57a7c411fb1f2b70 |
| SHA256 | f5c3600ec8eddafbd50dcfab4f231faefd08c714af72e316d92c74c819b8360f |
| SHA512 | 2e64e1a7189af73c2d2b166ae5d2a59d626af89d2a1e939ff09674043a1e7e2b091054bedc301547bef458ee010ca116a757cb8206b301191f6e6d79c3308291 |
\Windows\Resources\svchost.exe
| MD5 | c70154edb4ee2ae06e036e182c39f310 |
| SHA1 | 85b0e4da7d16a9475d9f3deb993a3fcacc200526 |
| SHA256 | 449585f0c8272348a0708621bcf554e371ab15aed5e1974f96d47252c349ac5b |
| SHA512 | 7432dabb119b5adf584590974ead186d02fa75641a31139901cdc2db14c7af5224d8746e9f17d5a077e11f27e06ec78bf8042d0de96e943dd9248e21639f9588 |
memory/2140-35-0x00000000002D0000-0x00000000002EF000-memory.dmp
memory/2748-40-0x0000000000400000-0x000000000041F000-memory.dmp
memory/2076-41-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1868-42-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1992-43-0x0000000000400000-0x000000000041F000-memory.dmp
memory/2140-44-0x0000000000400000-0x000000000041F000-memory.dmp