Analysis Overview
SHA256
89c68ff666770a482787e6d27b3c5b5c6efa46fd09c4fa64758f37995b218049
Threat Level: Likely malicious
The file Nezur_External.zip was found to be: Likely malicious.
Malicious Activity Summary
Sets service image path in registry
Unsigned PE
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-02 22:44
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-02 22:44
Reported
2024-03-02 22:46
Platform
win7-20240221-en
Max time kernel
119s
Max time network
119s
Command Line
Signatures
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\frAQBc8Wsa1xVPfv\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\frAQBc8Wsa1xVPfv" | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | N/A |
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2100 wrote to memory of 2096 | N/A | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | C:\Windows\system32\WerFault.exe |
| PID 2100 wrote to memory of 2096 | N/A | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | C:\Windows\system32\WerFault.exe |
| PID 2100 wrote to memory of 2096 | N/A | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | C:\Windows\system32\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Nezur.exe
"C:\Users\Admin\AppData\Local\Temp\Nezur.exe"
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2100 -s 344
Network
Files
memory/2100-1-0x00000000032D0000-0x00000000038B8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-02 22:44
Reported
2024-03-02 22:47
Platform
win10v2004-20240226-en
Max time kernel
137s
Max time network
144s
Command Line
Signatures
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\frAQBc8Wsa1xVPfv\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\frAQBc8Wsa1xVPfv" | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | N/A |
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Nezur.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\Nezur.exe
"C:\Users\Admin\AppData\Local\Temp\Nezur.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4396 --field-trial-handle=2264,i,7010714054498059916,1862725710331979271,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| NL | 52.142.223.178:80 | tcp | |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.71.91.104.in-addr.arpa | udp |