Analysis Overview
SHA256
bdb613c87738d5f8915b3581857f0bd5a7f231e281a2f094f6679c8f7acb53f8
Threat Level: Shows suspicious behavior
The file 90146ee8c911d1ba806bb51c9a6e6d62 was found to be: Shows suspicious behavior.
Malicious Activity Summary
UPX packed file
Loads dropped DLL
Installs/modifies Browser Helper Object
Adds Run key to start application
Drops file in System32 directory
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-04 20:28
Signatures
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-04 20:28
Reported
2024-02-04 20:31
Platform
win7-20231215-en
Max time kernel
140s
Max time network
119s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.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 |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ojfmqrd.dll = "C:\\Windows\\system32\\rundll32.exe C:\\Windows\\system32\\ojfmqrd.dll,fxotoj" | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{318513FE-8B07-F98A-6407-08D912A74554} | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\ojfmqrd.dll | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| File created | C:\Windows\SysWOW64\omcnjxg.dll | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{318513FE-8B07-F98A-6407-08D912A74554}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{318513FE-8B07-F98A-6407-08D912A74554} | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{318513FE-8B07-F98A-6407-08D912A74554}\InprocServer32\ = "C:\\Windows\\SysWow64\\omcnjxg.dll" | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{318513FE-8B07-F98A-6407-08D912A74554}\InprocServer32\ThreadingModel = "Apartment" | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe
"C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe"
C:\Windows\SysWOW64\rundll32.exe
C:\Windows\system32\rundll32.exe C:\Windows\system32\ojfmqrd.dll,fxotoj
Network
| Country | Destination | Domain | Proto |
| NL | 88.208.8.8:80 | tcp | |
| NL | 88.208.8.8:80 | tcp |
Files
\Windows\SysWOW64\omcnjxg.dll
| MD5 | 278dd526adb0537839e07c8c5df1518e |
| SHA1 | a255c19e03a416610c7e0384a828527dc3e346e6 |
| SHA256 | d67c0b08fa4c51134835bf89efa84c2260260b202b76d5f57c2e02eb6265e4a0 |
| SHA512 | cc60253675ca6e6f9b1cb1201c3e96da94a3c6232b873b1f8f8a1824a5708424aede85b1d636c47dda90cc20dcb5db948538efb197f42ac750729d36f5c6e451 |
memory/1872-4-0x0000000000400000-0x0000000000433000-memory.dmp
memory/1872-5-0x0000000010000000-0x0000000010019000-memory.dmp
C:\Windows\SysWOW64\ojfmqrd.dll
| MD5 | 56d4b45a20fc496519c6269291628d6b |
| SHA1 | cb2632b55a817049265a61c64c006e2fdf78559c |
| SHA256 | 5f1d0884dbadc9ef0924258721dd661106356e4b96217e578457415db34ad39a |
| SHA512 | daf38cf0725730940900944b49c7c7e202685698b9c6a9bfe46c8381986aa58d4b51497bdea00d91081b80d9618806ba5bf681b1d03c796fea9a07970806ee3e |
\Windows\SysWOW64\ojfmqrd.dll
| MD5 | be8c7a21cd849265572918d8b9f0102d |
| SHA1 | bfca95a96e68deb3072d4b19c2fbb63cdc527dac |
| SHA256 | 1e20adb2bf88af727b6fd397013aeaae0034abf2bed2f91371f0f1d8f0a9d0ee |
| SHA512 | b36998675a26eecf8a28ac76ad0956462f358a63c9e703d4d00b8699b9e6884c4ae1fb14c19616db71ca7d9a91d77be7168edeaabe987e60a20c7bf36dfee4f5 |
memory/2748-11-0x0000000010000000-0x000000001001E000-memory.dmp
memory/2748-12-0x0000000010000000-0x000000001001E000-memory.dmp
memory/2748-13-0x0000000010000000-0x000000001001E000-memory.dmp
memory/1872-14-0x0000000000400000-0x0000000000433000-memory.dmp
memory/1872-20-0x0000000010000000-0x0000000010019000-memory.dmp
memory/2748-21-0x0000000010000000-0x000000001001E000-memory.dmp
memory/2748-22-0x0000000010000000-0x000000001001E000-memory.dmp
memory/1872-31-0x0000000010000000-0x0000000010019000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-04 20:28
Reported
2024-02-04 20:31
Platform
win10v2004-20231215-en
Max time kernel
92s
Max time network
122s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ojfmqrd.dll = "C:\\Windows\\system32\\rundll32.exe C:\\Windows\\system32\\ojfmqrd.dll,fxotoj" | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{318513FE-8B07-F98A-6407-08D912A74554} | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\ojfmqrd.dll | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| File created | C:\Windows\SysWOW64\omcnjxg.dll | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{318513FE-8B07-F98A-6407-08D912A74554} | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{318513FE-8B07-F98A-6407-08D912A74554}\InprocServer32\ = "C:\\Windows\\SysWow64\\omcnjxg.dll" | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{318513FE-8B07-F98A-6407-08D912A74554}\InprocServer32\ThreadingModel = "Apartment" | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{318513FE-8B07-F98A-6407-08D912A74554}\InprocServer32 | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2784 wrote to memory of 2240 | N/A | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2784 wrote to memory of 2240 | N/A | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2784 wrote to memory of 2240 | N/A | C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe
"C:\Users\Admin\AppData\Local\Temp\90146ee8c911d1ba806bb51c9a6e6d62.exe"
C:\Windows\SysWOW64\rundll32.exe
C:\Windows\system32\rundll32.exe C:\Windows\system32\ojfmqrd.dll,fxotoj
Network
| Country | Destination | Domain | Proto |
| NL | 88.208.8.8:80 | tcp | |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 175.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 178.223.142.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.160.77.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 187.178.17.96.in-addr.arpa | udp |
Files
memory/2784-0-0x0000000000400000-0x0000000000433000-memory.dmp
C:\Windows\SysWOW64\omcnjxg.dll
| MD5 | 278dd526adb0537839e07c8c5df1518e |
| SHA1 | a255c19e03a416610c7e0384a828527dc3e346e6 |
| SHA256 | d67c0b08fa4c51134835bf89efa84c2260260b202b76d5f57c2e02eb6265e4a0 |
| SHA512 | cc60253675ca6e6f9b1cb1201c3e96da94a3c6232b873b1f8f8a1824a5708424aede85b1d636c47dda90cc20dcb5db948538efb197f42ac750729d36f5c6e451 |
memory/2784-6-0x0000000010000000-0x0000000010019000-memory.dmp
C:\Windows\SysWOW64\ojfmqrd.dll
| MD5 | 56d4b45a20fc496519c6269291628d6b |
| SHA1 | cb2632b55a817049265a61c64c006e2fdf78559c |
| SHA256 | 5f1d0884dbadc9ef0924258721dd661106356e4b96217e578457415db34ad39a |
| SHA512 | daf38cf0725730940900944b49c7c7e202685698b9c6a9bfe46c8381986aa58d4b51497bdea00d91081b80d9618806ba5bf681b1d03c796fea9a07970806ee3e |
memory/2240-9-0x0000000010000000-0x000000001001E000-memory.dmp
memory/2240-11-0x0000000010000000-0x000000001001E000-memory.dmp
memory/2784-12-0x0000000000400000-0x0000000000433000-memory.dmp
memory/2784-16-0x0000000010000000-0x0000000010019000-memory.dmp