Analysis Overview
SHA256
9bf52f89312939e6e2d6c86c1479692a3c68698a78d46d900c37e1afc589ba08
Threat Level: Known bad
The file 9bf52f89312939e6e2d6c86c1479692a3c68698a78d46d900c37e1afc589ba08 was found to be: Known bad.
Malicious Activity Summary
Urelas family
Urelas
Deletes itself
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-16 22:35
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 22:35
Reported
2024-03-16 22:38
Platform
win7-20240221-en
Max time kernel
121s
Max time network
125s
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\9bf52f89312939e6e2d6c86c1479692a3c68698a78d46d900c37e1afc589ba08.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\9bf52f89312939e6e2d6c86c1479692a3c68698a78d46d900c37e1afc589ba08.exe
"C:\Users\Admin\AppData\Local\Temp\9bf52f89312939e6e2d6c86c1479692a3c68698a78d46d900c37e1afc589ba08.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
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 6b134de347829004a74ab81d52d64b69 |
| SHA1 | ed2b4aa0ac81ef6e85dc6ade7b8ec88db2869e5a |
| SHA256 | 2580e02f2dcb893fcd5389a8cd73c8269de1844254cf914b357f83340703733d |
| SHA512 | 839e84b4e1d105df724ecb47ec9596f0efc430e823a449df6d9578c8b1964a62b0ee3c62a7254330da7a35eb2ba987353739d5e898564905281bee92bd02ed91 |
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 868e95bbc0c9998d8dfe3e1f80431636 |
| SHA1 | 06cf6850d8448eb5b2ef1333a724881813322165 |
| SHA256 | e46e57c26b2079a85858b9e44b98e4efb6d3bfcea2c54f7e912aa8346ee9de4c |
| SHA512 | 209468d8fb982a21b02da9dadfadc2406b247aee2998de57f0e3ed7a3520936683f1a880cd38b749404750298b74cc3efb53ba4c3f3ffe881156924c9ad495e3 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | a250860c0687ed9dda488805c025a2d2 |
| SHA1 | 0c181ed3b46463d35631ca169f0928c33a1da389 |
| SHA256 | 3947c34dfc780b424a3207c6ebe12f667bcb839733107f7a94fe495ec705cb37 |
| SHA512 | 0286fcd24203ef574c9fc37200e4b0e65d58296162aa89b5424ab48b814bd237e609ab7eaf42a69bdad2ab6414bfbbfaec4757e28b29c69752e0e65a653f665a |
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-16 22:35
Reported
2024-03-16 22:38
Platform
win10v2004-20240226-en
Max time kernel
145s
Max time network
157s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\9bf52f89312939e6e2d6c86c1479692a3c68698a78d46d900c37e1afc589ba08.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\9bf52f89312939e6e2d6c86c1479692a3c68698a78d46d900c37e1afc589ba08.exe
"C:\Users\Admin\AppData\Local\Temp\9bf52f89312939e6e2d6c86c1479692a3c68698a78d46d900c37e1afc589ba08.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 | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 181.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
| GB | 2.17.5.133:80 | www.microsoft.com | tcp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| GB | 2.17.5.133:80 | www.microsoft.com | tcp |
| US | 8.8.8.8:53 | 133.5.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| KR | 218.54.47.74:11150 | tcp | |
| US | 8.8.8.8:53 | 100.5.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.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 | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.135.221.88.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 16.173.189.20.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 3cbb37662c0688e8869a6e3102ba30f9 |
| SHA1 | 272a4482a7f9c9263249037363722fc29b112539 |
| SHA256 | eee755f3a379b0ca03a0850b7722fe2dd4057c7345a58ffccec0ef94c43d05d9 |
| SHA512 | 5cd5087a46a69c65e3f5db97e62fedf78925af21f460620be43730bc3a0f059e411defcc985565f74fb3f061bdccebb15ae97276157cc890efc0b687e3570330 |
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 868e95bbc0c9998d8dfe3e1f80431636 |
| SHA1 | 06cf6850d8448eb5b2ef1333a724881813322165 |
| SHA256 | e46e57c26b2079a85858b9e44b98e4efb6d3bfcea2c54f7e912aa8346ee9de4c |
| SHA512 | 209468d8fb982a21b02da9dadfadc2406b247aee2998de57f0e3ed7a3520936683f1a880cd38b749404750298b74cc3efb53ba4c3f3ffe881156924c9ad495e3 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | a250860c0687ed9dda488805c025a2d2 |
| SHA1 | 0c181ed3b46463d35631ca169f0928c33a1da389 |
| SHA256 | 3947c34dfc780b424a3207c6ebe12f667bcb839733107f7a94fe495ec705cb37 |
| SHA512 | 0286fcd24203ef574c9fc37200e4b0e65d58296162aa89b5424ab48b814bd237e609ab7eaf42a69bdad2ab6414bfbbfaec4757e28b29c69752e0e65a653f665a |