Analysis Overview
SHA256
2a61b9a53eab4f3367910d640a56f91efed198375bd01e2a66f0c3dc303f268d
Threat Level: Known bad
The file 62047ff726957cde33910db4cdabccc0N.exe was found to be: Known bad.
Malicious Activity Summary
Urelas
Loads dropped DLL
Checks computer location settings
Deletes itself
Executes dropped EXE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-28 06:26
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-28 06:26
Reported
2024-07-28 06:28
Platform
win7-20240708-en
Max time kernel
89s
Max time network
91s
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\62047ff726957cde33910db4cdabccc0N.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:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\biudfw.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe
"C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.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/2252-0-0x0000000000BB0000-0x0000000000BD5000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | fe3216fc538ad5f682b44e82570df674 |
| SHA1 | ad2e7edc4e315541f0a4a9184b03c6662711d3e8 |
| SHA256 | e9a8a78da442040322e8d4a30720671a431b85f859876e9c4770f008c2918117 |
| SHA512 | d638af478917f59d036786682f96eecfd7fee322b2b1aece6925a420ad97eeba6bbad5ca74230ecfd47ea5acc60c7607609d198f6df379701c60c6148438b149 |
memory/2776-10-0x0000000000B60000-0x0000000000B85000-memory.dmp
memory/2252-9-0x00000000004B0000-0x00000000004D5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 331d9128048d683331e5fcedf7a312b5 |
| SHA1 | e7933eefb989b83d24228475bfd485bd580e7671 |
| SHA256 | cf37066b11b4d00b6679168810bde72c9c4893e94203549585aef55521a80b17 |
| SHA512 | 096e541dfdee719747defe325dbd5486b313b94e7e63fa2b6ef1ba799f7d85ecbed8528a71839c4c98b92300cb163984674ed30967dc6e9e55c276c4430b26c3 |
memory/2252-19-0x0000000000BB0000-0x0000000000BD5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | efd90b3ac908d5482af367de3a82184a |
| SHA1 | de9f01d2ed0247b7b347e55c5a09721a60147fb9 |
| SHA256 | 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d |
| SHA512 | 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02 |
memory/2776-22-0x0000000000B60000-0x0000000000B85000-memory.dmp
memory/2776-24-0x0000000000B60000-0x0000000000B85000-memory.dmp
memory/2776-31-0x0000000000B60000-0x0000000000B85000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-28 06:26
Reported
2024-07-28 06:28
Platform
win10v2004-20240704-en
Max time kernel
100s
Max time network
104s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1403246978-718555486-3105247137-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.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:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\biudfw.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4068 wrote to memory of 2456 | N/A | C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 4068 wrote to memory of 2456 | N/A | C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 4068 wrote to memory of 2456 | N/A | C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 4068 wrote to memory of 1428 | N/A | C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4068 wrote to memory of 1428 | N/A | C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4068 wrote to memory of 1428 | N/A | C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.exe
"C:\Users\Admin\AppData\Local\Temp\62047ff726957cde33910db4cdabccc0N.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 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| KR | 218.54.47.74:11150 | tcp | |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 19.229.111.52.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/4068-0-0x0000000000050000-0x0000000000075000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | f74a4d615920e474e1107553d221c62f |
| SHA1 | 0d973e6d3dddced91cb55b4a4f1bc6e53cb2bd07 |
| SHA256 | 292cc6eeaa01be68d0126e400756b70ca4355e6baa2f1588839b4397bee9337d |
| SHA512 | eb7dde1df8478fbac8b9eb43b84d6f440b0d2ff57fe6ed2e30fe2933414a479a7f26ec03ea15c1bfe5f104adfb0862ff8f86e3d7150497007c9c239a27c6bb39 |
memory/2456-15-0x0000000000F30000-0x0000000000F55000-memory.dmp
memory/4068-17-0x0000000000050000-0x0000000000075000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 331d9128048d683331e5fcedf7a312b5 |
| SHA1 | e7933eefb989b83d24228475bfd485bd580e7671 |
| SHA256 | cf37066b11b4d00b6679168810bde72c9c4893e94203549585aef55521a80b17 |
| SHA512 | 096e541dfdee719747defe325dbd5486b313b94e7e63fa2b6ef1ba799f7d85ecbed8528a71839c4c98b92300cb163984674ed30967dc6e9e55c276c4430b26c3 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | efd90b3ac908d5482af367de3a82184a |
| SHA1 | de9f01d2ed0247b7b347e55c5a09721a60147fb9 |
| SHA256 | 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d |
| SHA512 | 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02 |
memory/2456-20-0x0000000000F30000-0x0000000000F55000-memory.dmp
memory/2456-22-0x0000000000F30000-0x0000000000F55000-memory.dmp
memory/2456-28-0x0000000000F30000-0x0000000000F55000-memory.dmp