Analysis Overview
SHA256
533cc19bd9b2b2bd5db03316d8a7e486f03c5c4b697887b33f1b691b37925d35
Threat Level: Known bad
The file 506a4b2f07b85042d59325b112bf3fc0N.exe was found to be: Known bad.
Malicious Activity Summary
Urelas
Loads dropped DLL
Deletes itself
Executes dropped EXE
Checks computer location settings
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
2024-08-03 04:48
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-03 04:48
Reported
2024-08-03 04:50
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\506a4b2f07b85042d59325b112bf3fc0N.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\506a4b2f07b85042d59325b112bf3fc0N.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\506a4b2f07b85042d59325b112bf3fc0N.exe
"C:\Users\Admin\AppData\Local\Temp\506a4b2f07b85042d59325b112bf3fc0N.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/2560-0-0x00000000008C0000-0x00000000008E8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 5e71120fbb0d221b56ac5d7620b47417 |
| SHA1 | 448b4014d2471362f97f7de40aa06c5958e539d6 |
| SHA256 | 5e7383e3bf16744b8b8a031f63668becc70a3bdfb98933a478d8bc938e418b62 |
| SHA512 | 6e8c2d1d482e0dd1d050d5eb73547f4193f5d17026e9221135a64ebd4b337f8dc9ee546e6ab26bd7a26e22a80aaf2ae6d93d431a48448c7d715b4994769c2b49 |
memory/2448-10-0x0000000000AC0000-0x0000000000AE8000-memory.dmp
memory/2560-9-0x0000000001CF0000-0x0000000001D18000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 41cb059dcbabf4eea539b86327b87ce6 |
| SHA1 | db95bfbabc68551c82723898a9f757077fe0a04a |
| SHA256 | adb300d917f874ff90168c061d97be534934c795169393cccb0b832925b9fcbe |
| SHA512 | a144f960448fd49c74be466039adcfbffe745e3205626f116003d960474017e97a73aba27710005dd5079e851189f6538aa7befe1c227b008dc10dc71494e951 |
memory/2560-19-0x00000000008C0000-0x00000000008E8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | a250860c0687ed9dda488805c025a2d2 |
| SHA1 | 0c181ed3b46463d35631ca169f0928c33a1da389 |
| SHA256 | 3947c34dfc780b424a3207c6ebe12f667bcb839733107f7a94fe495ec705cb37 |
| SHA512 | 0286fcd24203ef574c9fc37200e4b0e65d58296162aa89b5424ab48b814bd237e609ab7eaf42a69bdad2ab6414bfbbfaec4757e28b29c69752e0e65a653f665a |
memory/2448-22-0x0000000000AC0000-0x0000000000AE8000-memory.dmp
memory/2448-24-0x0000000000AC0000-0x0000000000AE8000-memory.dmp
memory/2448-31-0x0000000000AC0000-0x0000000000AE8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-03 04:48
Reported
2024-08-03 04:50
Platform
win10v2004-20240802-en
Max time kernel
93s
Max time network
95s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\506a4b2f07b85042d59325b112bf3fc0N.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\biudfw.exe | N/A |
| 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\506a4b2f07b85042d59325b112bf3fc0N.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4928 wrote to memory of 1376 | N/A | C:\Users\Admin\AppData\Local\Temp\506a4b2f07b85042d59325b112bf3fc0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 4928 wrote to memory of 1376 | N/A | C:\Users\Admin\AppData\Local\Temp\506a4b2f07b85042d59325b112bf3fc0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 4928 wrote to memory of 1376 | N/A | C:\Users\Admin\AppData\Local\Temp\506a4b2f07b85042d59325b112bf3fc0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 4928 wrote to memory of 216 | N/A | C:\Users\Admin\AppData\Local\Temp\506a4b2f07b85042d59325b112bf3fc0N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4928 wrote to memory of 216 | N/A | C:\Users\Admin\AppData\Local\Temp\506a4b2f07b85042d59325b112bf3fc0N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4928 wrote to memory of 216 | N/A | C:\Users\Admin\AppData\Local\Temp\506a4b2f07b85042d59325b112bf3fc0N.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\506a4b2f07b85042d59325b112bf3fc0N.exe
"C:\Users\Admin\AppData\Local\Temp\506a4b2f07b85042d59325b112bf3fc0N.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 | g.bing.com | udp |
| US | 13.107.21.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| KR | 218.54.47.74:11150 | tcp | |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
Files
memory/4928-0-0x00000000003D0000-0x00000000003F8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 79d2750a59e472ed8a23450c180289b1 |
| SHA1 | c9c639544a2eddc3ebf39c957d51beafc8875a49 |
| SHA256 | 83f7ca9b465ec3d6ff05bf332f31a01872a101179e848887ef7fb3919660f161 |
| SHA512 | b487c26a1566ffadb56824d9ecbb60e738f48c5fe5f33805fd730050cbd87158ab8fec3ddd58f374dbfc7c61a30afbfd206751e691eb95fc2640edca517f92ea |
memory/1376-15-0x0000000000D00000-0x0000000000D28000-memory.dmp
memory/4928-18-0x00000000003D0000-0x00000000003F8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 41cb059dcbabf4eea539b86327b87ce6 |
| SHA1 | db95bfbabc68551c82723898a9f757077fe0a04a |
| SHA256 | adb300d917f874ff90168c061d97be534934c795169393cccb0b832925b9fcbe |
| SHA512 | a144f960448fd49c74be466039adcfbffe745e3205626f116003d960474017e97a73aba27710005dd5079e851189f6538aa7befe1c227b008dc10dc71494e951 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | a250860c0687ed9dda488805c025a2d2 |
| SHA1 | 0c181ed3b46463d35631ca169f0928c33a1da389 |
| SHA256 | 3947c34dfc780b424a3207c6ebe12f667bcb839733107f7a94fe495ec705cb37 |
| SHA512 | 0286fcd24203ef574c9fc37200e4b0e65d58296162aa89b5424ab48b814bd237e609ab7eaf42a69bdad2ab6414bfbbfaec4757e28b29c69752e0e65a653f665a |
memory/1376-21-0x0000000000D00000-0x0000000000D28000-memory.dmp
memory/1376-23-0x0000000000D00000-0x0000000000D28000-memory.dmp
memory/1376-30-0x0000000000D00000-0x0000000000D28000-memory.dmp