Analysis Overview
SHA256
7b8e307c3337b89db988b2d008477c956b6ca7dc3a88bc8745b42280690db4bc
Threat Level: Known bad
The file 7b8e307c3337b89db988b2d008477c956b6ca7dc3a88bc8745b42280690db4bc was found to be: Known bad.
Malicious Activity Summary
Urelas
Deletes itself
Loads dropped DLL
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
2024-10-08 23:56
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-10-08 23:56
Reported
2024-10-08 23:58
Platform
win7-20240903-en
Max time kernel
119s
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\7b8e307c3337b89db988b2d008477c956b6ca7dc3a88bc8745b42280690db4bc.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\7b8e307c3337b89db988b2d008477c956b6ca7dc3a88bc8745b42280690db4bc.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\7b8e307c3337b89db988b2d008477c956b6ca7dc3a88bc8745b42280690db4bc.exe
"C:\Users\Admin\AppData\Local\Temp\7b8e307c3337b89db988b2d008477c956b6ca7dc3a88bc8745b42280690db4bc.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/2948-0-0x0000000000A40000-0x0000000000A68000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 87f18c606d0e976190250795aaab8a3b |
| SHA1 | a740ed68d629b59b76ced3f5dd823fecf39db2fc |
| SHA256 | 9306cf7cba1caa1f7ab607dd03139e4440a2a7f2e6ab85f31c17a632d23c4e79 |
| SHA512 | 94a95f216f2d832d0a963fade7c27014b0b46368acd60ea1e4c43dfb646fb48e94a7b47f1b3bfcd00217d545b0789e0eabc866d8982de3e374fab9c481e0a849 |
memory/2948-6-0x0000000000420000-0x0000000000448000-memory.dmp
memory/2956-10-0x0000000000380000-0x00000000003A8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 415a99a7256dc5ec428116ab06cf6df4 |
| SHA1 | 2d9ba6b153227c8b10968cea3bd61bb6ec16eb08 |
| SHA256 | e73f22f4d8fd9ccd1a873a0c92d56568c05958fc8d61bce774fc0a479faf894f |
| SHA512 | 98b62a5a727442e633f16ca6651e5688dedc87c053731a5f5d4bf659073040a9b71a68d0398450ca52f99784122f33ccc76eec4e4dabb1942c404ec60cb34bfb |
memory/2948-19-0x0000000000A40000-0x0000000000A68000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | a250860c0687ed9dda488805c025a2d2 |
| SHA1 | 0c181ed3b46463d35631ca169f0928c33a1da389 |
| SHA256 | 3947c34dfc780b424a3207c6ebe12f667bcb839733107f7a94fe495ec705cb37 |
| SHA512 | 0286fcd24203ef574c9fc37200e4b0e65d58296162aa89b5424ab48b814bd237e609ab7eaf42a69bdad2ab6414bfbbfaec4757e28b29c69752e0e65a653f665a |
memory/2956-22-0x0000000000380000-0x00000000003A8000-memory.dmp
memory/2956-24-0x0000000000380000-0x00000000003A8000-memory.dmp
memory/2956-30-0x0000000000380000-0x00000000003A8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-10-08 23:56
Reported
2024-10-08 23:58
Platform
win10v2004-20241007-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\7b8e307c3337b89db988b2d008477c956b6ca7dc3a88bc8745b42280690db4bc.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\7b8e307c3337b89db988b2d008477c956b6ca7dc3a88bc8745b42280690db4bc.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\7b8e307c3337b89db988b2d008477c956b6ca7dc3a88bc8745b42280690db4bc.exe
"C:\Users\Admin\AppData\Local\Temp\7b8e307c3337b89db988b2d008477c956b6ca7dc3a88bc8745b42280690db4bc.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 | 68.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.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 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 100.209.201.84.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
Files
memory/3120-0-0x00000000009B0000-0x00000000009D8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | e552928ca08827b60b345262931b5db1 |
| SHA1 | 952b55407f600c2c278c892c10431335b7d60349 |
| SHA256 | 99092e566b649670bbe0097568c4057cae541d7f13ff463c1828653db8d403a3 |
| SHA512 | 7cc6a69299fed86559b8d51ab5150c97551c9e0404c34633712d5cbef481a55a933faeb951dd5ee67088d96fc5a3a4960d7f9f34b283bf05bffc055163eb590a |
memory/1996-13-0x00000000002D0000-0x00000000002F8000-memory.dmp
memory/3120-18-0x00000000009B0000-0x00000000009D8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 415a99a7256dc5ec428116ab06cf6df4 |
| SHA1 | 2d9ba6b153227c8b10968cea3bd61bb6ec16eb08 |
| SHA256 | e73f22f4d8fd9ccd1a873a0c92d56568c05958fc8d61bce774fc0a479faf894f |
| SHA512 | 98b62a5a727442e633f16ca6651e5688dedc87c053731a5f5d4bf659073040a9b71a68d0398450ca52f99784122f33ccc76eec4e4dabb1942c404ec60cb34bfb |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | a250860c0687ed9dda488805c025a2d2 |
| SHA1 | 0c181ed3b46463d35631ca169f0928c33a1da389 |
| SHA256 | 3947c34dfc780b424a3207c6ebe12f667bcb839733107f7a94fe495ec705cb37 |
| SHA512 | 0286fcd24203ef574c9fc37200e4b0e65d58296162aa89b5424ab48b814bd237e609ab7eaf42a69bdad2ab6414bfbbfaec4757e28b29c69752e0e65a653f665a |
memory/1996-21-0x00000000002D0000-0x00000000002F8000-memory.dmp
memory/1996-23-0x00000000002D0000-0x00000000002F8000-memory.dmp
memory/1996-30-0x00000000002D0000-0x00000000002F8000-memory.dmp