Analysis Overview
SHA256
ec95dfc127a1053672f3f078925436c9d3c52e72e6ea6678607f4a43bffc06d2
Threat Level: Known bad
The file ec95dfc127a1053672f3f078925436c9d3c52e72e6ea6678607f4a43bffc06d2N was found to be: Known bad.
Malicious Activity Summary
Urelas
Loads dropped DLL
Deletes itself
Checks computer location settings
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
2024-10-12 14:08
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-10-12 14:08
Reported
2024-10-12 14:10
Platform
win7-20240708-en
Max time kernel
118s
Max time network
120s
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\ec95dfc127a1053672f3f078925436c9d3c52e72e6ea6678607f4a43bffc06d2N.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\ec95dfc127a1053672f3f078925436c9d3c52e72e6ea6678607f4a43bffc06d2N.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\ec95dfc127a1053672f3f078925436c9d3c52e72e6ea6678607f4a43bffc06d2N.exe
"C:\Users\Admin\AppData\Local\Temp\ec95dfc127a1053672f3f078925436c9d3c52e72e6ea6678607f4a43bffc06d2N.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/388-0-0x00000000001B0000-0x00000000001D5000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 3ed96de26435a95bd724dd8192abeef5 |
| SHA1 | d9931ad4d4716cae690a269f7048ff579a1a001a |
| SHA256 | c50b0d466f3f79b624ef21297e89dfd462d06c54f57c4f9f4b7478a6894b45fb |
| SHA512 | 6f818ea0d5249969ee9bbab583bfe17b9432cb687279833c13012f67eb38c07fd3322c755a92546b3acd5409d6a352cf17adb0a3ad503b1f26855c5e8904aa3b |
memory/388-6-0x0000000000480000-0x00000000004A5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 52de364334f68538894034967dfa7b25 |
| SHA1 | d394b860ff927b3ea1504d8bbf73aaa61a450895 |
| SHA256 | 32c8eaa5d1514a1b8920543cbb2e86686812ef8d678ab6a092686398679beb01 |
| SHA512 | 45aeecea873ce57713bc49e65fb398f90a725ad1210e9b31feee0debe6a9df31c9c7345f1f5546b56cfa52c6ed1de0542ebf405aa0352ebed302bbc3b1407de5 |
memory/388-17-0x00000000001B0000-0x00000000001D5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | efd90b3ac908d5482af367de3a82184a |
| SHA1 | de9f01d2ed0247b7b347e55c5a09721a60147fb9 |
| SHA256 | 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d |
| SHA512 | 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02 |
memory/592-20-0x0000000000250000-0x0000000000275000-memory.dmp
memory/592-22-0x0000000000250000-0x0000000000275000-memory.dmp
memory/592-29-0x0000000000250000-0x0000000000275000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-10-12 14:08
Reported
2024-10-12 14:10
Platform
win10v2004-20241007-en
Max time kernel
96s
Max time network
97s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ec95dfc127a1053672f3f078925436c9d3c52e72e6ea6678607f4a43bffc06d2N.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\ec95dfc127a1053672f3f078925436c9d3c52e72e6ea6678607f4a43bffc06d2N.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\ec95dfc127a1053672f3f078925436c9d3c52e72e6ea6678607f4a43bffc06d2N.exe
"C:\Users\Admin\AppData\Local\Temp\ec95dfc127a1053672f3f078925436c9d3c52e72e6ea6678607f4a43bffc06d2N.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 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| KR | 218.54.47.74:11150 | tcp | |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.42.69.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.117.19.2.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 98.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
Files
memory/4624-0-0x0000000000FC0000-0x0000000000FE5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | ba3d1928e8e5ce6b32367aa65fa19036 |
| SHA1 | 0563de0c7c546cf5384f802cde98c42fde12d521 |
| SHA256 | 0056215373ba8f7413f065cb7c9158dbe08e5bd5c6b4e8c8e763fcd3fff2c4cb |
| SHA512 | e4b52506d6212805be8af805927d98020b77216e6f87c813e6266e23777f2b8c542ba216f328a624b21fc9cbcf690e7614f8b6fe3e6de20fa91a0f8eb3a7fed6 |
memory/2868-13-0x0000000000610000-0x0000000000635000-memory.dmp
memory/4624-18-0x0000000000FC0000-0x0000000000FE5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 52de364334f68538894034967dfa7b25 |
| SHA1 | d394b860ff927b3ea1504d8bbf73aaa61a450895 |
| SHA256 | 32c8eaa5d1514a1b8920543cbb2e86686812ef8d678ab6a092686398679beb01 |
| SHA512 | 45aeecea873ce57713bc49e65fb398f90a725ad1210e9b31feee0debe6a9df31c9c7345f1f5546b56cfa52c6ed1de0542ebf405aa0352ebed302bbc3b1407de5 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | efd90b3ac908d5482af367de3a82184a |
| SHA1 | de9f01d2ed0247b7b347e55c5a09721a60147fb9 |
| SHA256 | 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d |
| SHA512 | 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02 |
memory/2868-21-0x0000000000610000-0x0000000000635000-memory.dmp
memory/2868-23-0x0000000000610000-0x0000000000635000-memory.dmp
memory/2868-30-0x0000000000610000-0x0000000000635000-memory.dmp