Analysis Overview
SHA256
8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc
Threat Level: Known bad
The file 8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc was found to be: Known bad.
Malicious Activity Summary
Urelas
Executes dropped EXE
Loads dropped DLL
Deletes itself
Checks computer location settings
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 00:09
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-10-12 00:09
Reported
2024-10-12 00:11
Platform
win7-20241010-en
Max time kernel
90s
Max time network
95s
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\8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.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\8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.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\8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe
"C:\Users\Admin\AppData\Local\Temp\8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.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/2220-0-0x0000000000B10000-0x0000000000B35000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 34a16d9217c9a19138ef045ede14ef6e |
| SHA1 | 50a15c9371e393549e654ebbcd506d198487f86c |
| SHA256 | c5ba3ca92caf1cf29ba20c38a34a076bfbd3b7d2847fb2b94e4acb9f238ebf60 |
| SHA512 | 17ab138a9bae1cc070a2726f4d696a1902b42e37d16b364d28226286a31bc5839163b3d679ca07ddc9ec772df4353e6099316e6eab0baf7a8bdd192818f5be33 |
memory/2220-6-0x00000000008F0000-0x0000000000915000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | ca924d4b88a01a30062207c12f11646a |
| SHA1 | 71aa72755cd58918ae9af3cc588db2ed7a9e19a1 |
| SHA256 | f6e5fc49e2ed487d335a5885a87d2e36da4be512939186548d1b0a823e21dc68 |
| SHA512 | bc1086536a44aa8a52e165b3425d3bc8ba12973dcb04bbea23bdc8f2a7deef4ceb5ea8b6148a32962dd96c6f8153de5599119a8c455f688cea2b54c6a9cc13f0 |
memory/2220-18-0x0000000000B10000-0x0000000000B35000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | efd90b3ac908d5482af367de3a82184a |
| SHA1 | de9f01d2ed0247b7b347e55c5a09721a60147fb9 |
| SHA256 | 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d |
| SHA512 | 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02 |
memory/2592-21-0x0000000000FC0000-0x0000000000FE5000-memory.dmp
memory/2592-23-0x0000000000FC0000-0x0000000000FE5000-memory.dmp
memory/2592-29-0x0000000000FC0000-0x0000000000FE5000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-10-12 00:09
Reported
2024-10-12 00:11
Platform
win10v2004-20241007-en
Max time kernel
94s
Max time network
97s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.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\8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.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\8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe
"C:\Users\Admin\AppData\Local\Temp\8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.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 | 150.171.27.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.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 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.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 |
Files
memory/4248-0-0x0000000000DF0000-0x0000000000E15000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 7f552cb504df509996ff3881a797562f |
| SHA1 | a683ecf5de73092b28e90a1eb4dc8f89ff8bf17e |
| SHA256 | 1d9569844a03fd53c2e43e8c64ff10380c62c3928d18aedb48ed302134244d8c |
| SHA512 | cc8570d02772080917db2f9829937a0eb53e882b8f41a292ceda13e13a9b321cd7d5146672520685acacb9c43471c7ffe58f7be08c5f4d791e3756ef26aada64 |
memory/2804-13-0x0000000000800000-0x0000000000825000-memory.dmp
memory/4248-17-0x0000000000DF0000-0x0000000000E15000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | ca924d4b88a01a30062207c12f11646a |
| SHA1 | 71aa72755cd58918ae9af3cc588db2ed7a9e19a1 |
| SHA256 | f6e5fc49e2ed487d335a5885a87d2e36da4be512939186548d1b0a823e21dc68 |
| SHA512 | bc1086536a44aa8a52e165b3425d3bc8ba12973dcb04bbea23bdc8f2a7deef4ceb5ea8b6148a32962dd96c6f8153de5599119a8c455f688cea2b54c6a9cc13f0 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | efd90b3ac908d5482af367de3a82184a |
| SHA1 | de9f01d2ed0247b7b347e55c5a09721a60147fb9 |
| SHA256 | 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d |
| SHA512 | 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02 |
memory/2804-20-0x0000000000800000-0x0000000000825000-memory.dmp
memory/2804-22-0x0000000000800000-0x0000000000825000-memory.dmp
memory/2804-28-0x0000000000800000-0x0000000000825000-memory.dmp