Analysis Overview
SHA256
5044679442b15f0bf4197d73b3ca20f1cc247ab62846662cacdc68bb94ebeb51
Threat Level: Known bad
The file 5044679442b15f0bf4197d73b3ca20f1cc247ab62846662cacdc68bb94ebeb51 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
2024-08-31 08:13
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-31 08:13
Reported
2024-08-31 08:16
Platform
win7-20240729-en
Max time kernel
120s
Max time network
121s
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\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.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\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2264 wrote to memory of 2384 | N/A | C:\Users\Admin\AppData\Local\Temp\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2264 wrote to memory of 2384 | N/A | C:\Users\Admin\AppData\Local\Temp\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2264 wrote to memory of 2384 | N/A | C:\Users\Admin\AppData\Local\Temp\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2264 wrote to memory of 2384 | N/A | C:\Users\Admin\AppData\Local\Temp\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.exe
"C:\Users\Admin\AppData\Local\Temp\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 68
Network
Files
memory/2264-0-0x0000000000E5C000-0x0000000000EEF000-memory.dmp
memory/2264-1-0x0000000000DF0000-0x0000000000EEF000-memory.dmp
memory/2264-2-0x0000000000E5C000-0x0000000000EEF000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-31 08:13
Reported
2024-08-31 08:16
Platform
win10v2004-20240802-en
Max time kernel
133s
Max time network
128s
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\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.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\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.exe
"C:\Users\Admin\AppData\Local\Temp\19bdba4c02f3e286b2d7047e76e25aad356748edcec95e37634face159894eb2.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4984 -ip 4984
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 252
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=3980,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=4420 /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 | 196.249.167.52.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 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.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/4984-0-0x0000000000C3C000-0x0000000000CCF000-memory.dmp
memory/4984-1-0x0000000000BD0000-0x0000000000CCF000-memory.dmp
memory/4984-3-0x0000000000BD0000-0x0000000000CCF000-memory.dmp
memory/4984-2-0x0000000000C3C000-0x0000000000CCF000-memory.dmp