Analysis Overview
SHA256
e57d4b377ee0271136c016f994c84a8c08dae93f658a5d069d2552832895e18f
Threat Level: Shows suspicious behavior
The file dd1d4e7f5b640fc3d968c8ac07f334c5 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Checks computer location settings
UPX packed file
Installs/modifies Browser Helper Object
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-25 03:22
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
2024-03-25 03:22
Reported
2024-03-25 03:25
Platform
win7-20240221-en
Max time kernel
141s
Max time network
124s
Command Line
Signatures
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FF5137B5-C506-4D9B-8682-E0BE4675B899} | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{FF5137B5-C506-4D9B-8682-E0BE4675B899}\ | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\OJHMUHLIOIM | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
| File created | C:\Windows\pmspl.dll | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
| File opened for modification | C:\Windows\pmspl.dll | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe
"C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe"
C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" /s C:\Windows\pmspl.dll
Network
Files
memory/1524-0-0x0000000000400000-0x000000000048C000-memory.dmp
memory/1524-1-0x00000000001C0000-0x00000000001C1000-memory.dmp
C:\Windows\pmspl.dll
| MD5 | 99404cd500609f705b28631e25535241 |
| SHA1 | 5ebbf13c3afed4135e5c3c6355571d3699f88a81 |
| SHA256 | 55acf2d68de3021def3ae2c591e7985c9e3fd050f6e2bdd2f328b64eb2b415ca |
| SHA512 | 88417ce7a533b5a2692b78bfde2aaa865456ff082b68d2bf9cb4fe3e7a01cc254b5f4f1f7a6aea18f30f4f7ad1cbb29bc9ef4398b0f700bc387c34f7ce1b5e3a |
memory/1524-8-0x0000000000400000-0x000000000048C000-memory.dmp
memory/1524-10-0x00000000001C0000-0x00000000001C1000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-25 03:22
Reported
2024-03-25 03:25
Platform
win10v2004-20240226-en
Max time kernel
149s
Max time network
154s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.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 |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FF5137B5-C506-4D9B-8682-E0BE4675B899} | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FF5137B5-C506-4D9B-8682-E0BE4675B899}\ | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\MJUIOHUOHHJ | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
| File created | C:\Windows\pmspl.dll | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
| File opened for modification | C:\Windows\pmspl.dll | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4124 wrote to memory of 2348 | N/A | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4124 wrote to memory of 2348 | N/A | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4124 wrote to memory of 2348 | N/A | C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe | C:\Windows\SysWOW64\regsvr32.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe
"C:\Users\Admin\AppData\Local\Temp\dd1d4e7f5b640fc3d968c8ac07f334c5.exe"
C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" /s C:\Windows\pmspl.dll
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 178.223.142.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 85.65.42.20.in-addr.arpa | udp |
Files
memory/4124-0-0x0000000000400000-0x000000000048C000-memory.dmp
memory/4124-1-0x00000000009A0000-0x00000000009A1000-memory.dmp
C:\Windows\MJUIOHUOHHJ
| MD5 | 99404cd500609f705b28631e25535241 |
| SHA1 | 5ebbf13c3afed4135e5c3c6355571d3699f88a81 |
| SHA256 | 55acf2d68de3021def3ae2c591e7985c9e3fd050f6e2bdd2f328b64eb2b415ca |
| SHA512 | 88417ce7a533b5a2692b78bfde2aaa865456ff082b68d2bf9cb4fe3e7a01cc254b5f4f1f7a6aea18f30f4f7ad1cbb29bc9ef4398b0f700bc387c34f7ce1b5e3a |
memory/4124-9-0x0000000000400000-0x000000000048C000-memory.dmp
memory/4124-11-0x00000000009A0000-0x00000000009A1000-memory.dmp