Analysis Overview
SHA256
1a09288983e86e28e6542caf27f0aa856ee2375c24e579f835b390ed9ecfc761
Threat Level: Known bad
The file 1a09288983e86e28e6542caf27f0aa856ee2375c24e579f835b390ed9ecfc761 was found to be: Known bad.
Malicious Activity Summary
Expiro, m0yv
Expiro payload
System Location Discovery: System Language Discovery
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-01 06:10
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-01 06:10
Reported
2024-09-01 06:13
Platform
win10v2004-20240802-en
Max time kernel
135s
Max time network
129s
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\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.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\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe
"C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4836 -ip 4836
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4836 -s 292
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1296,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.27.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.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 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 10.28.171.150.in-addr.arpa | udp |
Files
memory/4836-0-0x0000000000BFB000-0x0000000000C8E000-memory.dmp
memory/4836-1-0x0000000000B90000-0x0000000000C8E000-memory.dmp
memory/4836-2-0x0000000000BFB000-0x0000000000C8E000-memory.dmp
memory/4836-3-0x0000000000B90000-0x0000000000C8E000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-01 06:10
Reported
2024-09-01 06:13
Platform
win7-20240708-en
Max time kernel
122s
Max time network
123s
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\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.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\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2684 wrote to memory of 2756 | N/A | C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2684 wrote to memory of 2756 | N/A | C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2684 wrote to memory of 2756 | N/A | C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2684 wrote to memory of 2756 | N/A | C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe
"C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 96
Network
Files
memory/2684-0-0x00000000013BB000-0x000000000144E000-memory.dmp
memory/2684-1-0x0000000001350000-0x000000000144E000-memory.dmp
memory/2684-2-0x00000000013BB000-0x000000000144E000-memory.dmp