Analysis Overview
SHA256
ad3fdf98b8be3c2bc0f7fe96aec6df4bd686fee78f5249cb73aeffe65540b99d
Threat Level: Known bad
The file d07ae5eb7a8e9c65fd0be420c14a0bb2 was found to be: Known bad.
Malicious Activity Summary
Urelas family
Urelas
Checks computer location settings
Executes dropped EXE
Deletes itself
Loads dropped DLL
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-17 09:05
Signatures
Urelas family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-17 09:05
Reported
2024-03-17 09:08
Platform
win10v2004-20240226-en
Max time kernel
149s
Max time network
151s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.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
| Description | Indicator | Process | Target |
| PID 2352 wrote to memory of 4220 | N/A | C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 2352 wrote to memory of 4220 | N/A | C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 2352 wrote to memory of 4220 | N/A | C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 2352 wrote to memory of 2844 | N/A | C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2352 wrote to memory of 2844 | N/A | C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2352 wrote to memory of 2844 | N/A | C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.exe
"C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.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 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 100.5.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| KR | 218.54.47.74:11150 | tcp | |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 174.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | 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 | 25.73.42.20.in-addr.arpa | udp |
Files
memory/2352-0-0x0000000000C90000-0x0000000000CC2000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | f44af430d6ad8e3c542b3acd781a3139 |
| SHA1 | a03a6632a2d1aad44487ad19b38adb514c5287d8 |
| SHA256 | 71b5fad460ac5290dbbe3672f5dc54cf458d9eba2199f1fccff81c9915263e39 |
| SHA512 | 91f6254a0f968d55f43700888704f108e079d51d7f67d1948b0e955b471ee9bf62ab957c1d1c3b72716dc3b660b27b1d4da6059d5b0f447c60a2926afd98643a |
memory/4220-15-0x0000000000620000-0x0000000000652000-memory.dmp
memory/2352-17-0x0000000000C90000-0x0000000000CC2000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | bc1d434dffa395a95abd4d58f4d2fbdf |
| SHA1 | f634dbbd5cd486ce545b80fcb03cdfee27f6d61f |
| SHA256 | 3399bedd7600583509c2abba117b9430dde2c884a9cb6bf86ea01a37b6b8ced5 |
| SHA512 | 1a1f9d9274bb7da1287b0bf1b1cf4db1823a5ad2247644583e4e31e45307fce1ef503140f59ba11d9043701ad035c6e83ab2568b5ff0cd9fc92a7b27d76c5d1f |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 1e75a7e32613b9d0b73f13b66c2c2f58 |
| SHA1 | 035e2d6ab4ac34190f0e684681098188409e978c |
| SHA256 | 9f8aa6da5d4cd4a6f17fc229bb965d1f2525d6bc7f70ffba6a13c7e3bbd2a1f3 |
| SHA512 | e8ba9e9796b506655b9432ed7036383a3eab746a948a18df6e9598e59e6830a834e30bad7455bc22d4ae19a63f051d2aaa57b435594e881130559aac385bd8cf |
memory/4220-20-0x0000000000620000-0x0000000000652000-memory.dmp
memory/4220-21-0x0000000000620000-0x0000000000652000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-17 09:05
Reported
2024-03-17 09:08
Platform
win7-20240220-en
Max time kernel
118s
Max time network
119s
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\d07ae5eb7a8e9c65fd0be420c14a0bb2.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.exe
"C:\Users\Admin\AppData\Local\Temp\d07ae5eb7a8e9c65fd0be420c14a0bb2.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/2172-0-0x0000000000840000-0x0000000000872000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | d07ae5eb7a8e9c65fd0be420c14a0bb2 |
| SHA1 | ebe8e5114b9fe1f8599b69f4de189676d6624301 |
| SHA256 | ad3fdf98b8be3c2bc0f7fe96aec6df4bd686fee78f5249cb73aeffe65540b99d |
| SHA512 | 3bce4a31d8c09ec196497ff7fc5fb534f057b18c6ca291382c06286662f220e99eb89063fce1ba6bbd5826bf9df3bf01f2fe9905f8096628836286fdf1e0e095 |
memory/2172-6-0x00000000003A0000-0x00000000003D2000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | bc1d434dffa395a95abd4d58f4d2fbdf |
| SHA1 | f634dbbd5cd486ce545b80fcb03cdfee27f6d61f |
| SHA256 | 3399bedd7600583509c2abba117b9430dde2c884a9cb6bf86ea01a37b6b8ced5 |
| SHA512 | 1a1f9d9274bb7da1287b0bf1b1cf4db1823a5ad2247644583e4e31e45307fce1ef503140f59ba11d9043701ad035c6e83ab2568b5ff0cd9fc92a7b27d76c5d1f |
memory/2880-18-0x00000000011F0000-0x0000000001222000-memory.dmp
memory/2172-17-0x0000000000840000-0x0000000000872000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 1e75a7e32613b9d0b73f13b66c2c2f58 |
| SHA1 | 035e2d6ab4ac34190f0e684681098188409e978c |
| SHA256 | 9f8aa6da5d4cd4a6f17fc229bb965d1f2525d6bc7f70ffba6a13c7e3bbd2a1f3 |
| SHA512 | e8ba9e9796b506655b9432ed7036383a3eab746a948a18df6e9598e59e6830a834e30bad7455bc22d4ae19a63f051d2aaa57b435594e881130559aac385bd8cf |
memory/2880-21-0x00000000011F0000-0x0000000001222000-memory.dmp
memory/2880-22-0x00000000011F0000-0x0000000001222000-memory.dmp