Analysis Overview
SHA256
c3c50a5e04cf999e097087219f291c86ded5368a5134d2d6613939768ce2b03e
Threat Level: Known bad
The file c3c50a5e04cf999e097087219f291c86ded5368a5134d2d6613939768ce2b03e was found to be: Known bad.
Malicious Activity Summary
Urelas
Urelas family
Loads dropped DLL
Checks computer location settings
Deletes itself
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-16 23:47
Signatures
Urelas family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-16 23:47
Reported
2024-03-16 23:50
Platform
win7-20240221-en
Max time kernel
122s
Max time network
133s
Command Line
Signatures
Urelas
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\biudfw.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c3c50a5e04cf999e097087219f291c86ded5368a5134d2d6613939768ce2b03e.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c3c50a5e04cf999e097087219f291c86ded5368a5134d2d6613939768ce2b03e.exe
"C:\Users\Admin\AppData\Local\Temp\c3c50a5e04cf999e097087219f291c86ded5368a5134d2d6613939768ce2b03e.exe"
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
"C:\Users\Admin\AppData\Local\Temp\biudfw.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "
Network
| Country | Destination | Domain | Proto |
| KR | 218.54.47.76:11120 | tcp | |
| KR | 218.54.47.74:11150 | tcp | |
| KR | 218.54.47.76:11170 | tcp | |
| KR | 218.54.47.77:11150 | tcp |
Files
memory/1764-0-0x0000000000F30000-0x0000000000F57000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 2748a90c81fa5adfbc5c40c2c996e607 |
| SHA1 | 3190da332d1ebb8cb699f7f09b42a4bc0033f43f |
| SHA256 | 5c77dd975ef53413f868a0e92a70eb20711a19ae70a6f3e47cf9dddcd5958e94 |
| SHA512 | 93d99186d7fae6b25a4a7cd29d4ed5910745e37ec394a24fa3442c47008bc0ccbae934bd32f3e4f7fd91e6c6b83597fc6c098a838fca2dfeb4576bd085e66dfa |
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | d732eaa281de751ba31a94485d3ec3ba |
| SHA1 | 0fa7f872ef8cef20902ddbf368e1675e8e6bf3de |
| SHA256 | 346a210530638d2ad77b850382def437e7667c212ec9c864ce5f092c0783a60b |
| SHA512 | 383396611aaec52532bd022e998c397814fbcfa5953c390aeafd5e4a99c71a9a4dcd622a2b53f1cd7d936f7a3093a0d97e6306cb5e36d534fee2e0798e87f02f |
memory/1748-9-0x0000000000E70000-0x0000000000E97000-memory.dmp
memory/1764-17-0x0000000000F30000-0x0000000000F57000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | e2d9c84d22710b94f88db5e136efd92e |
| SHA1 | 5636678dda45ea10068357a9b17878399804aea3 |
| SHA256 | 91377fdab72045adb923f62c3b0b46de7360e62beaab96489eefb36dd8554f25 |
| SHA512 | 11159ba71474c0fc20139e27d71e10349b486d17cdd60a1df93babf9d8f40d8ab0764a881b93472e03036a50735b2b3defc790da5519d8cf723c6de46b008f3d |
memory/1748-20-0x0000000000E70000-0x0000000000E97000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-16 23:47
Reported
2024-03-16 23:50
Platform
win10v2004-20240226-en
Max time kernel
144s
Max time network
157s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\c3c50a5e04cf999e097087219f291c86ded5368a5134d2d6613939768ce2b03e.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\biudfw.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c3c50a5e04cf999e097087219f291c86ded5368a5134d2d6613939768ce2b03e.exe
"C:\Users\Admin\AppData\Local\Temp\c3c50a5e04cf999e097087219f291c86ded5368a5134d2d6613939768ce2b03e.exe"
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
"C:\Users\Admin\AppData\Local\Temp\biudfw.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| KR | 218.54.47.74:11150 | tcp | |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.239.69.13.in-addr.arpa | udp |
Files
memory/3472-0-0x0000000000B20000-0x0000000000B47000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 7f2e47a3e13d0de1d873024a6615453b |
| SHA1 | 922b437c6e166b6e29c3afa3e98b85880ecaef8f |
| SHA256 | 3955b655862b5ebbdfb835a4f1d50c624a0db93b3d9d96747ddf23b889af54f7 |
| SHA512 | ad9e047738cb9a913082da15291592a2c699bfbedfcaa036f4c6c898d865e202fe07e4797f0f9906a4c6a0cc7754680e4ef8851c3cb45aa2c84d25875f1fe01c |
memory/804-13-0x0000000000DE0000-0x0000000000E07000-memory.dmp
memory/3472-17-0x0000000000B20000-0x0000000000B47000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | d732eaa281de751ba31a94485d3ec3ba |
| SHA1 | 0fa7f872ef8cef20902ddbf368e1675e8e6bf3de |
| SHA256 | 346a210530638d2ad77b850382def437e7667c212ec9c864ce5f092c0783a60b |
| SHA512 | 383396611aaec52532bd022e998c397814fbcfa5953c390aeafd5e4a99c71a9a4dcd622a2b53f1cd7d936f7a3093a0d97e6306cb5e36d534fee2e0798e87f02f |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | e2d9c84d22710b94f88db5e136efd92e |
| SHA1 | 5636678dda45ea10068357a9b17878399804aea3 |
| SHA256 | 91377fdab72045adb923f62c3b0b46de7360e62beaab96489eefb36dd8554f25 |
| SHA512 | 11159ba71474c0fc20139e27d71e10349b486d17cdd60a1df93babf9d8f40d8ab0764a881b93472e03036a50735b2b3defc790da5519d8cf723c6de46b008f3d |
memory/804-20-0x0000000000DE0000-0x0000000000E07000-memory.dmp