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
Executes dropped EXE
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
2024-10-08 23:53
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-10-08 23:53
Reported
2024-10-08 23:55
Platform
win7-20240903-en
Max time kernel
122s
Max time network
125s
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:\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
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/1608-0-0x0000000001100000-0x0000000001128000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | c161442d6a748b04599a260b62583338 |
| SHA1 | b930c51f5557652f9b013f5788c1c3674a1f25ec |
| SHA256 | e9e3d337e5def42f772faf3a5abc4f5d78770c7150616006b26912b586f3a77f |
| SHA512 | 73ccc6f43739c184dc28b2709a1c05827814a6333439319493b533e30f7b8f51d4955ad434fa53921ab26c915abbd2d91ab86b751bf823659c79bd1cce78c9c5 |
memory/1608-6-0x0000000000880000-0x00000000008A8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 415a99a7256dc5ec428116ab06cf6df4 |
| SHA1 | 2d9ba6b153227c8b10968cea3bd61bb6ec16eb08 |
| SHA256 | e73f22f4d8fd9ccd1a873a0c92d56568c05958fc8d61bce774fc0a479faf894f |
| SHA512 | 98b62a5a727442e633f16ca6651e5688dedc87c053731a5f5d4bf659073040a9b71a68d0398450ca52f99784122f33ccc76eec4e4dabb1942c404ec60cb34bfb |
memory/1608-18-0x0000000001100000-0x0000000001128000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | a250860c0687ed9dda488805c025a2d2 |
| SHA1 | 0c181ed3b46463d35631ca169f0928c33a1da389 |
| SHA256 | 3947c34dfc780b424a3207c6ebe12f667bcb839733107f7a94fe495ec705cb37 |
| SHA512 | 0286fcd24203ef574c9fc37200e4b0e65d58296162aa89b5424ab48b814bd237e609ab7eaf42a69bdad2ab6414bfbbfaec4757e28b29c69752e0e65a653f665a |
memory/3012-21-0x0000000000A90000-0x0000000000AB8000-memory.dmp
memory/3012-23-0x0000000000A90000-0x0000000000AB8000-memory.dmp
memory/3012-30-0x0000000000A90000-0x0000000000AB8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-10-08 23:53
Reported
2024-10-08 23:55
Platform
win10v2004-20241007-en
Max time kernel
93s
Max time network
149s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 77.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| KR | 218.54.47.74:11150 | tcp | |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 139.190.18.2.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 79.190.18.2.in-addr.arpa | udp |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
Files
memory/2268-0-0x00000000006F0000-0x0000000000718000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 750ed92b5c76f83824e6ef261b0b4097 |
| SHA1 | 16a0b8df408e302d5d8fcdcc95dfc7a09a2e899a |
| SHA256 | 33cd89ff73e1a2693a020f072594d963f1a5d2a2ee36688c7ad1bcd99254b9b7 |
| SHA512 | 3fc5d8b2b5fbb15f94049aafd6908a97c58c81e517632b595e1475ba36464a1a6c8de2bb0d086333776d96f73d0f9ad16d3fd6cb39b14ebc57ff3051fa9ddb6a |
memory/2504-13-0x0000000000A30000-0x0000000000A58000-memory.dmp
memory/2268-18-0x00000000006F0000-0x0000000000718000-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/2504-21-0x0000000000A30000-0x0000000000A58000-memory.dmp
memory/2504-23-0x0000000000A30000-0x0000000000A58000-memory.dmp
memory/2504-29-0x0000000000A30000-0x0000000000A58000-memory.dmp