Analysis Overview
SHA256
f135531a4e85ab7a26c8baebd2d645c5949469fce76616c1477555e6fe61a795
Threat Level: Likely malicious
The file f135531a4e85ab7a26c8baebd2d645c5949469fce76616c1477555e6fe61a795N was found to be: Likely malicious.
Malicious Activity Summary
Blocklisted process makes network request
Reads user/profile data of web browsers
Enumerates connected drives
Writes to the Master Boot Record (MBR)
Adds Run key to start application
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-11 17:57
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-11 17:57
Reported
2024-11-11 17:59
Platform
win7-20241010-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\sDisk = "C:\\Windows\\SysWOW64\\rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\f135531a4e85ab7a26c8baebd2d645c5949469fce76616c1477555e6fe61a795N.dll\",SSL_clear" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\w: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\z: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\i: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\u: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\k: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\q: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\t: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\y: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\a: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\e: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\h: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\l: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\o: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\s: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\v: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\b: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\g: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\n: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\p: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\r: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\x: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\j: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\m: | C:\Windows\SysWOW64\rundll32.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PHYSICALDRIVE0 | C:\Windows\SysWOW64\rundll32.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\rundll32.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2320 wrote to memory of 1572 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2320 wrote to memory of 1572 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2320 wrote to memory of 1572 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2320 wrote to memory of 1572 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2320 wrote to memory of 1572 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2320 wrote to memory of 1572 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2320 wrote to memory of 1572 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f135531a4e85ab7a26c8baebd2d645c5949469fce76616c1477555e6fe61a795N.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f135531a4e85ab7a26c8baebd2d645c5949469fce76616c1477555e6fe61a795N.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 110.34.196.36:803 | tcp | |
| US | 110.34.196.36:803 | tcp | |
| US | 110.34.196.34:3204 | tcp | |
| US | 110.34.196.35:805 | tcp | |
| US | 110.34.196.35:805 | tcp | |
| US | 110.34.196.35:805 | tcp | |
| US | 110.34.196.35:805 | tcp | |
| US | 110.34.196.34:3204 | tcp | |
| US | 110.34.196.34:3204 | tcp |
Files
memory/1572-0-0x0000000010000000-0x0000000010059000-memory.dmp
memory/1572-1-0x0000000010000000-0x0000000010059000-memory.dmp
memory/1572-2-0x0000000010037000-0x0000000010038000-memory.dmp
memory/1572-3-0x0000000010000000-0x0000000010059000-memory.dmp
memory/1572-5-0x0000000010000000-0x0000000010059000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-11 17:57
Reported
2024-11-11 17:59
Platform
win10v2004-20241007-en
Max time kernel
117s
Max time network
122s
Command Line
Signatures
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sDisk = "C:\\Windows\\SysWOW64\\rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\f135531a4e85ab7a26c8baebd2d645c5949469fce76616c1477555e6fe61a795N.dll\",SSL_clear" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\o: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\p: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\a: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\b: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\h: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\i: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\k: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\m: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\u: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\w: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\q: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\r: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\v: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\y: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\z: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\e: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\l: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\n: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\g: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\j: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\s: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\t: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\x: | C:\Windows\SysWOW64\rundll32.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PHYSICALDRIVE0 | C:\Windows\SysWOW64\rundll32.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\rundll32.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 780 wrote to memory of 4876 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 780 wrote to memory of 4876 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 780 wrote to memory of 4876 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f135531a4e85ab7a26c8baebd2d645c5949469fce76616c1477555e6fe61a795N.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f135531a4e85ab7a26c8baebd2d645c5949469fce76616c1477555e6fe61a795N.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 110.34.196.36:803 | tcp | |
| US | 110.34.196.34:3204 | tcp | |
| US | 110.34.196.35:805 | tcp | |
| US | 110.34.196.35:805 | tcp | |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.190.18.2.in-addr.arpa | udp |
| US | 110.34.196.35:805 | tcp | |
| US | 110.34.196.34:3204 | tcp | |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 110.34.196.34:3204 | tcp | |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 110.34.196.34:3204 | tcp |
Files
memory/4876-0-0x0000000010000000-0x0000000010059000-memory.dmp
memory/4876-1-0x0000000010037000-0x0000000010038000-memory.dmp
memory/4876-2-0x0000000010000000-0x0000000010059000-memory.dmp
memory/4876-4-0x0000000010000000-0x0000000010059000-memory.dmp