Analysis Overview
SHA256
ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f
Threat Level: Shows suspicious behavior
The file ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f was found to be: Shows suspicious behavior.
Malicious Activity Summary
Loads dropped DLL
Adds Run key to start application
Drops file in System32 directory
Unsigned PE
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-26 03:49
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-26 03:49
Reported
2024-05-26 03:51
Platform
win7-20240419-en
Max time kernel
121s
Max time network
122s
Command Line
Signatures
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2036 wrote to memory of 2588 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2036 wrote to memory of 2588 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2036 wrote to memory of 2588 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2036 wrote to memory of 2588 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2036 wrote to memory of 2588 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2036 wrote to memory of 2588 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2036 wrote to memory of 2588 | 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\ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f.dll,#1
Network
Files
memory/2588-4-0x0000000010000000-0x0000000010012000-memory.dmp
memory/2588-3-0x0000000010000000-0x0000000010012000-memory.dmp
memory/2588-2-0x0000000010000000-0x0000000010012000-memory.dmp
memory/2588-1-0x0000000010000000-0x0000000010012000-memory.dmp
memory/2588-0-0x0000000010000000-0x0000000010012000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-26 03:49
Reported
2024-05-26 03:51
Platform
win10v2004-20240426-en
Max time kernel
150s
Max time network
150s
Command Line
Signatures
Loads dropped DLL
| 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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\khfETmmm.dll,#1" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\khfETmmm.dll | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\khfETmmm.dll | C:\Windows\SysWOW64\rundll32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8D742974-DEA8-40F2-9008-9BAA973C958D} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8D742974-DEA8-40F2-9008-9BAA973C958D}\InprocServer32 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8D742974-DEA8-40F2-9008-9BAA973C958D}\InprocServer32\ = "C:\\Windows\\SysWow64\\khfETmmm.dll" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8D742974-DEA8-40F2-9008-9BAA973C958D}\InprocServer32\ThreadingModel = "Both" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| 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 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 4472 wrote to memory of 1864 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4472 wrote to memory of 1864 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4472 wrote to memory of 1864 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1864 wrote to memory of 612 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\system32\winlogon.exe |
| PID 1864 wrote to memory of 4324 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1864 wrote to memory of 4324 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1864 wrote to memory of 4324 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\winlogon.exe
winlogon.exe
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Windows\system32\khfETmmm.dll,a
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.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 | 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 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 168.117.168.52.in-addr.arpa | udp |
Files
memory/1864-1-0x0000000010000000-0x0000000010012000-memory.dmp
memory/1864-0-0x0000000010000000-0x0000000010012000-memory.dmp
memory/1864-2-0x0000000010000000-0x0000000010012000-memory.dmp
C:\Windows\SysWOW64\khfETmmm.dll
| MD5 | 39924d7821cc67b6f271b4f528ec0081 |
| SHA1 | 0a5049b966908f164a7ddbffa55fdadab4541b39 |
| SHA256 | ddd87658782244dec43b9e9fca693d4c0976496a6a8887f7f0c9f6e3516fda0f |
| SHA512 | c87cd842d35db62177d5b7c6612d0ffd3d465ae23c93435d3e09df7babf4a9bb109e6a67602b11ecbc83363f897d3d221f62f78e1ea5b61d77d59c773ede681e |
memory/1864-10-0x0000000001100000-0x0000000001112000-memory.dmp
memory/1864-9-0x0000000001100000-0x0000000001112000-memory.dmp
memory/1864-12-0x0000000001100000-0x0000000001112000-memory.dmp
memory/4324-18-0x0000000010000000-0x0000000010012000-memory.dmp
memory/4324-17-0x0000000010000000-0x0000000010012000-memory.dmp
memory/4324-19-0x0000000010000000-0x0000000010012000-memory.dmp
memory/4324-20-0x0000000010000000-0x0000000010012000-memory.dmp