Analysis Overview
SHA256
dcd5569afa621f11e18269a237b4bc200a0b23c97d4f4d54d9fa37234c7d26b3
Threat Level: Known bad
The file dcd5569afa621f11e18269a237b4bc200a0b23c97d4f4d54d9fa37234c7d26b3 was found to be: Known bad.
Malicious Activity Summary
Expiro, m0yv
Expiro payload
Program crash
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-31 14:13
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-31 14:13
Reported
2024-08-31 14:16
Platform
win10v2004-20240802-en
Max time kernel
142s
Max time network
126s
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\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.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\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.exe
"C:\Users\Admin\AppData\Local\Temp\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3320 -ip 3320
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3320 -s 476
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=4112,i,9445584274764997943,12714240264001792460,262144 --variations-seed-version --mojo-platform-channel-handle=4020 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 150.171.27.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.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 | 92.12.20.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.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 |
Files
memory/3320-0-0x0000000000420000-0x00000000004B4000-memory.dmp
memory/3320-1-0x00000000003B0000-0x00000000004B4000-memory.dmp
memory/3320-2-0x0000000000420000-0x00000000004B4000-memory.dmp
memory/3320-3-0x00000000003B0000-0x00000000004B4000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-31 14:13
Reported
2024-08-31 14:16
Platform
win7-20240705-en
Max time kernel
16s
Max time network
18s
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\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.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\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2524 wrote to memory of 2352 | N/A | C:\Users\Admin\AppData\Local\Temp\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2524 wrote to memory of 2352 | N/A | C:\Users\Admin\AppData\Local\Temp\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2524 wrote to memory of 2352 | N/A | C:\Users\Admin\AppData\Local\Temp\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 2524 wrote to memory of 2352 | N/A | C:\Users\Admin\AppData\Local\Temp\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.exe
"C:\Users\Admin\AppData\Local\Temp\b1cbe50c00ba8c397d2eabe9d0c2ebc9fc175455f9a6c9ea0b481f79ff7cab8f.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2524 -s 160
Network
Files
memory/2524-0-0x00000000011D0000-0x0000000001264000-memory.dmp
memory/2524-1-0x0000000001160000-0x0000000001264000-memory.dmp
memory/2524-2-0x00000000011D0000-0x0000000001264000-memory.dmp