Analysis Overview
SHA256
d91dcc301722692594664654a2aa3feb53c4fbdf0c10cf9f1b6790a59e982298
Threat Level: Known bad
The file 55ae6ad49d02908444ba196526e9bfd0N.exe was found to be: Known bad.
Malicious Activity Summary
Urelas
Checks computer location settings
Deletes itself
Executes dropped EXE
Loads dropped DLL
Unsigned PE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-13 18:13
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-13 18:13
Reported
2024-08-13 18:16
Platform
win7-20240704-en
Max time kernel
119s
Max time network
124s
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\55ae6ad49d02908444ba196526e9bfd0N.exe | N/A |
Enumerates physical storage devices
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\55ae6ad49d02908444ba196526e9bfd0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\biudfw.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.exe
"C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.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/1188-0-0x0000000000400000-0x0000000000428000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 50048ce65981b4b5bf756e8553a358fa |
| SHA1 | 3f61ea5e5bcecdbf2848aafef726e84a6063c9c3 |
| SHA256 | 7f6b57ed37b4d8a7871fff14662cd93cb8d8b9f96688f898747f011822040709 |
| SHA512 | 24bd4944a0b80864242f039fb2199352f1b98320b8cfe3538add1d0ba0b244a5576566e4ede75fd730b52b971afe59e815c6b3a5ccab3de081162439492f1eed |
memory/1188-6-0x0000000001CE0000-0x0000000001D08000-memory.dmp
memory/2640-10-0x0000000000400000-0x0000000000428000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 0880417ff4f9404f0041785383084e0d |
| SHA1 | 0dfe2d0fc025e5af7ee986e6a3b050ce43fc5a05 |
| SHA256 | b18ea1807ec1546cfc0da9fb9db95251bb3cf4c12f2d01bab1e8ab22e4059805 |
| SHA512 | f2a794e51ebeb95532059afd1d1607afff7755ab5ef04682a27ceba59ec4c39ab9ced1e6654462ba6cc899776900e4c1320888a0349a67b35d41f270f2e9c0f9 |
memory/1188-19-0x0000000000400000-0x0000000000428000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | b4a86880004da8726288d7ec954885a8 |
| SHA1 | 1bab1cfbdc2c540246210bc7852f8fe7e8357b31 |
| SHA256 | c85016a9115aeb492bf116ab05791a9c3e6e30c39274767bd0476bd56a37db46 |
| SHA512 | 22758f6c6de591c99f8f9857c1b03e55c242f0a4987d376b08c30bc608027d1574a228a8230099ddac2a3214663396b016e85d085204155a5ec26f87a28496b4 |
memory/2640-22-0x0000000000400000-0x0000000000428000-memory.dmp
memory/2640-24-0x0000000000400000-0x0000000000428000-memory.dmp
memory/2640-30-0x0000000000400000-0x0000000000428000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-13 18:13
Reported
2024-08-13 18:15
Platform
win10v2004-20240802-en
Max time kernel
105s
Max time network
107s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.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
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\55ae6ad49d02908444ba196526e9bfd0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\biudfw.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3980 wrote to memory of 4968 | N/A | C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 3980 wrote to memory of 4968 | N/A | C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 3980 wrote to memory of 4968 | N/A | C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 3980 wrote to memory of 748 | N/A | C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3980 wrote to memory of 748 | N/A | C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3980 wrote to memory of 748 | N/A | C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.exe
"C:\Users\Admin\AppData\Local\Temp\55ae6ad49d02908444ba196526e9bfd0N.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 | 14.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| KR | 218.54.47.74:11150 | tcp | |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 240.143.123.92.in-addr.arpa | udp |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.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 |
Files
memory/3980-0-0x0000000000400000-0x0000000000428000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 44253b16ac3dc7a69853bf8a66c6f1ce |
| SHA1 | cb0f6618de766bc37833bca036c8a726acd57a79 |
| SHA256 | b5e987cf4fcb756c29381fb8e81a987f4e693506f2ff2374fb0608bd0350c101 |
| SHA512 | 5171b2d41b111ed042842d9f26c6df63b95566700fba8a1e7ece2607fb736d1aa2d2c403ce75e46d13ef89ee5c6f95ead4f1367d98ea8db35396a13ab2fdefab |
memory/4968-12-0x0000000000400000-0x0000000000428000-memory.dmp
memory/3980-14-0x0000000000400000-0x0000000000428000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 0880417ff4f9404f0041785383084e0d |
| SHA1 | 0dfe2d0fc025e5af7ee986e6a3b050ce43fc5a05 |
| SHA256 | b18ea1807ec1546cfc0da9fb9db95251bb3cf4c12f2d01bab1e8ab22e4059805 |
| SHA512 | f2a794e51ebeb95532059afd1d1607afff7755ab5ef04682a27ceba59ec4c39ab9ced1e6654462ba6cc899776900e4c1320888a0349a67b35d41f270f2e9c0f9 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | b4a86880004da8726288d7ec954885a8 |
| SHA1 | 1bab1cfbdc2c540246210bc7852f8fe7e8357b31 |
| SHA256 | c85016a9115aeb492bf116ab05791a9c3e6e30c39274767bd0476bd56a37db46 |
| SHA512 | 22758f6c6de591c99f8f9857c1b03e55c242f0a4987d376b08c30bc608027d1574a228a8230099ddac2a3214663396b016e85d085204155a5ec26f87a28496b4 |
memory/4968-17-0x0000000000400000-0x0000000000428000-memory.dmp
memory/4968-19-0x0000000000400000-0x0000000000428000-memory.dmp
memory/4968-26-0x0000000000400000-0x0000000000428000-memory.dmp