Analysis Overview
SHA256
423255a1ca7dcbbb040cdd6f80ce7f2caf8bdbbab50b48623c57d68caaabdcd2
Threat Level: Known bad
The file 423255a1ca7dcbbb040cdd6f80ce7f2caf8bdbbab50b48623c57d68caaabdcd2 was found to be: Known bad.
Malicious Activity Summary
Urelas
Deletes itself
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
System Location Discovery: System Language Discovery
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-11 20:39
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-11 20:39
Reported
2024-08-11 20:41
Platform
win7-20240708-en
Max time kernel
121s
Max time network
122s
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\423255a1ca7dcbbb040cdd6f80ce7f2caf8bdbbab50b48623c57d68caaabdcd2.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\423255a1ca7dcbbb040cdd6f80ce7f2caf8bdbbab50b48623c57d68caaabdcd2.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\423255a1ca7dcbbb040cdd6f80ce7f2caf8bdbbab50b48623c57d68caaabdcd2.exe
"C:\Users\Admin\AppData\Local\Temp\423255a1ca7dcbbb040cdd6f80ce7f2caf8bdbbab50b48623c57d68caaabdcd2.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/2180-0-0x00000000000E0000-0x0000000000105000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 2f738185a59f3f2ad315c0294d55058f |
| SHA1 | 98ac72de23ec1e61fc5f708d983733698f4193b3 |
| SHA256 | 3935b75f4cea5fc426366224b511f15140db14772dac97676f64bdec4f0797b3 |
| SHA512 | 19d457040496f0b0feffdba68eb34bd63ef9e2642877eefc353e054b72b78e00b4c7e8bcf9e2cbf5dc0193c5e1d1b9bf445da5cb49b279e72518982ef074e891 |
memory/2180-6-0x0000000001DE0000-0x0000000001E05000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | dc9528c2cac3a23f7a87a7d540d91884 |
| SHA1 | 256f6cf2ec410a56840e5fa3a5ca86f3b2d81154 |
| SHA256 | 496f2b0744689091d6449a47f472fab995fb0c604c9a0d325a965731c5b1dcc7 |
| SHA512 | c2b6ebeabae13ff4c113c03f528785bfde9d4619aa7cfe889cb299e011bfeeb10670b84b3231fbea08cea44daa485dd3adf533fde1d2f262e29cad686651ca57 |
memory/768-17-0x0000000001350000-0x0000000001375000-memory.dmp
memory/2180-18-0x00000000000E0000-0x0000000000105000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 657ce9e5dd337971e44dfb9cb3fbf7dd |
| SHA1 | 026734083afaa4b7d298781b26a72ac9b67ac831 |
| SHA256 | 3138d6a5526aaa3cb120adb309f2a27d5fec03c8aa088268a1c7f378dd722472 |
| SHA512 | 79aab9648bb19ebe5946dd9edd7e11a70ea7b340a1c7539ccff3d3d13de2932bf5ea9077c079208e09bf5d632f00541e52d4926c5c80f86741effb8d86acd26d |
memory/768-21-0x0000000001350000-0x0000000001375000-memory.dmp
memory/768-23-0x0000000001350000-0x0000000001375000-memory.dmp
memory/768-30-0x0000000001350000-0x0000000001375000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-11 20:39
Reported
2024-08-11 20:41
Platform
win10v2004-20240802-en
Max time kernel
143s
Max time network
125s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\423255a1ca7dcbbb040cdd6f80ce7f2caf8bdbbab50b48623c57d68caaabdcd2.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\423255a1ca7dcbbb040cdd6f80ce7f2caf8bdbbab50b48623c57d68caaabdcd2.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\423255a1ca7dcbbb040cdd6f80ce7f2caf8bdbbab50b48623c57d68caaabdcd2.exe
"C:\Users\Admin\AppData\Local\Temp\423255a1ca7dcbbb040cdd6f80ce7f2caf8bdbbab50b48623c57d68caaabdcd2.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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.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 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 147.142.123.92.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| 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 | 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 |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 10.28.171.150.in-addr.arpa | udp |
Files
memory/368-0-0x0000000000F80000-0x0000000000FA5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | ef24c3202c900696cb111e1de6dcea0a |
| SHA1 | 42ce4a39f71ec9758101a5de1143cb66165197a4 |
| SHA256 | c8f4e6cac07936178f94ea6c3b47d110f4e94f7825f6019332a1d2edcd8d9baf |
| SHA512 | 28aebfd26932648a6575b0cd99568f00c46278f66a0a2906918d76b573ad876af194505a992fa4141077c045e2cd38c5d366c626942a042de1f26d7ec44f0efd |
memory/2568-15-0x00000000001F0000-0x0000000000215000-memory.dmp
memory/368-18-0x0000000000F80000-0x0000000000FA5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | dc9528c2cac3a23f7a87a7d540d91884 |
| SHA1 | 256f6cf2ec410a56840e5fa3a5ca86f3b2d81154 |
| SHA256 | 496f2b0744689091d6449a47f472fab995fb0c604c9a0d325a965731c5b1dcc7 |
| SHA512 | c2b6ebeabae13ff4c113c03f528785bfde9d4619aa7cfe889cb299e011bfeeb10670b84b3231fbea08cea44daa485dd3adf533fde1d2f262e29cad686651ca57 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 657ce9e5dd337971e44dfb9cb3fbf7dd |
| SHA1 | 026734083afaa4b7d298781b26a72ac9b67ac831 |
| SHA256 | 3138d6a5526aaa3cb120adb309f2a27d5fec03c8aa088268a1c7f378dd722472 |
| SHA512 | 79aab9648bb19ebe5946dd9edd7e11a70ea7b340a1c7539ccff3d3d13de2932bf5ea9077c079208e09bf5d632f00541e52d4926c5c80f86741effb8d86acd26d |
memory/2568-21-0x00000000001F0000-0x0000000000215000-memory.dmp
memory/2568-23-0x00000000001F0000-0x0000000000215000-memory.dmp
memory/2568-30-0x00000000001F0000-0x0000000000215000-memory.dmp