Analysis Overview
SHA256
ef53e8071a456732eb373d3e1e6d599008681bde0a3cb05fdf862c589a2723de
Threat Level: Known bad
The file ef53e8071a456732eb373d3e1e6d599008681bde0a3cb05fdf862c589a2723de was found to be: Known bad.
Malicious Activity Summary
UAC bypass
Blocklisted process makes network request
Checks installed software on the system
Enumerates connected drives
Unsigned PE
System Location Discovery: System Language Discovery
System policy modification
Checks processor information in registry
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-04 03:46
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-04 03:46
Reported
2024-11-04 03:49
Platform
win7-20240903-en
Max time kernel
150s
Max time network
148s
Command Line
Signatures
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Windows\SysWOW64\rundll32.exe | N/A |
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 |
Checks installed software on the system
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\H: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\X: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\O: | 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) | \??\E: | 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) | \??\K: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\L: | 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) | \??\N: | 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) | \??\Z: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\Y: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\B: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\I: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\M: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\P: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\T: | 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 |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2672 wrote to memory of 3064 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2672 wrote to memory of 3064 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2672 wrote to memory of 3064 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2672 wrote to memory of 3064 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2672 wrote to memory of 3064 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2672 wrote to memory of 3064 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2672 wrote to memory of 3064 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef53e8071a456732eb373d3e1e6d599008681bde0a3cb05fdf862c589a2723de.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef53e8071a456732eb373d3e1e6d599008681bde0a3cb05fdf862c589a2723de.dll,#1
Network
| Country | Destination | Domain | Proto |
| KR | 91.204.224.157:6666 | tcp | |
| KR | 91.204.224.157:6666 | tcp |
Files
memory/3064-0-0x0000000000180000-0x0000000000182000-memory.dmp
memory/3064-1-0x0000000002310000-0x000000000238E000-memory.dmp
memory/3064-3-0x0000000000B90000-0x0000000000BE5000-memory.dmp
memory/3064-6-0x0000000000B90000-0x0000000000BE5000-memory.dmp
memory/3064-8-0x0000000000B90000-0x0000000000BE5000-memory.dmp
memory/3064-7-0x0000000000B90000-0x0000000000BE5000-memory.dmp
memory/3064-5-0x0000000000B90000-0x0000000000BE5000-memory.dmp
memory/3064-9-0x0000000000B90000-0x0000000000BE5000-memory.dmp
memory/3064-10-0x0000000000B90000-0x0000000000BE5000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-04 03:46
Reported
2024-11-04 03:49
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
151s
Command Line
Signatures
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Windows\SysWOW64\rundll32.exe | N/A |
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 |
Checks installed software on the system
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\B: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\J: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\K: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\N: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\S: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\M: | 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) | \??\W: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\X: | 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) | \??\O: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\P: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\Q: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\U: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\G: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\I: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\L: | 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) | \??\Z: | 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 |
| 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 SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3552 wrote to memory of 2040 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3552 wrote to memory of 2040 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3552 wrote to memory of 2040 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef53e8071a456732eb373d3e1e6d599008681bde0a3cb05fdf862c589a2723de.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef53e8071a456732eb373d3e1e6d599008681bde0a3cb05fdf862c589a2723de.dll,#1
Network
| Country | Destination | Domain | Proto |
| KR | 91.204.224.157:6666 | tcp | |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.224.204.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| KR | 91.204.224.157:6666 | tcp | |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.27.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 107.12.20.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
Files
memory/2040-0-0x0000000002E90000-0x0000000002E92000-memory.dmp
memory/2040-1-0x0000000003410000-0x000000000348E000-memory.dmp
memory/2040-2-0x0000000002FA0000-0x0000000002FF5000-memory.dmp
memory/2040-6-0x0000000002FA0000-0x0000000002FF5000-memory.dmp
memory/2040-5-0x0000000002FA0000-0x0000000002FF5000-memory.dmp
memory/2040-4-0x0000000002FA0000-0x0000000002FF5000-memory.dmp
memory/2040-7-0x0000000002FA0000-0x0000000002FF5000-memory.dmp
memory/2040-8-0x0000000002FA0000-0x0000000002FF5000-memory.dmp
memory/2040-9-0x0000000002FA0000-0x0000000002FF5000-memory.dmp