Analysis Overview
SHA256
37fc923f5c9d98bff902d465e93f84d0b1f1448648b5dd83c522b0a74c7bc608
Threat Level: Known bad
The file a4e5f1e7b92724a85597335c940a8619.zip was found to be: Known bad.
Malicious Activity Summary
Expiro, m0yv
Expiro payload
Unsigned PE
Program crash
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-31 04:35
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-31 04:35
Reported
2024-08-31 04:37
Platform
win7-20240708-en
Max time kernel
118s
Max time network
120s
Command Line
Signatures
Expiro, m0yv
Expiro payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 784 wrote to memory of 2352 | N/A | C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 784 wrote to memory of 2352 | N/A | C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 784 wrote to memory of 2352 | N/A | C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 784 wrote to memory of 2352 | N/A | C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe
"C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 784 -s 64
Network
Files
memory/784-0-0x000000000020B000-0x000000000029E000-memory.dmp
memory/784-1-0x00000000001A0000-0x000000000029E000-memory.dmp
memory/784-2-0x000000000020B000-0x000000000029E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-31 04:35
Reported
2024-08-31 04:37
Platform
win10v2004-20240802-en
Max time kernel
134s
Max time network
103s
Command Line
Signatures
Expiro, m0yv
Expiro payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe
"C:\Users\Admin\AppData\Local\Temp\e6e76e326d39cbe942d69f7d27cfa23355ddeb710a1ab7a29515cf0a001ce1b8.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2952 -ip 2952
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2952 -s 256
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.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 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
Files
memory/2952-0-0x000000000028B000-0x000000000031E000-memory.dmp
memory/2952-1-0x0000000000220000-0x000000000031E000-memory.dmp
memory/2952-2-0x000000000028B000-0x000000000031E000-memory.dmp
memory/2952-3-0x0000000000220000-0x000000000031E000-memory.dmp