Analysis Overview
SHA256
704381fe2d234c45355135639671982d9c592662ef1e6263db78d2aadd7e8eb8
Threat Level: Known bad
The file 2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe was found to be: Known bad.
Malicious Activity Summary
MedusaLocker payload
Medusalocker family
Program crash
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix
Analysis: static1
Detonation Overview
Reported
2023-09-26 18:33
Signatures
MedusaLocker payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Medusalocker family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-09-26 18:33
Reported
2023-09-26 18:36
Platform
win7-20230831-en
Max time kernel
118s
Max time network
128s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1436 wrote to memory of 1708 | N/A | C:\Users\Admin\AppData\Local\Temp\2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1436 wrote to memory of 1708 | N/A | C:\Users\Admin\AppData\Local\Temp\2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1436 wrote to memory of 1708 | N/A | C:\Users\Admin\AppData\Local\Temp\2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1436 wrote to memory of 1708 | N/A | C:\Users\Admin\AppData\Local\Temp\2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 216
Network
Files
Analysis: behavioral2
Detonation Overview
Submitted
2023-09-26 18:33
Reported
2023-09-26 18:37
Platform
win10v2004-20230915-en
Max time kernel
194s
Max time network
214s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-26_821d0098dfec5bdf9df9fc1a41f36288_cobalt-strike_medusa-locker_JC.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3740 -ip 3740
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3740 -s 584
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.81.21.72.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 108.211.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.73.42.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.57.101.20.in-addr.arpa | udp |