Analysis Overview
SHA256
d7b0ce3f71458c33857a02fd7ad9c751810a40bd1173c642c37b5c9a1462bc78
Threat Level: Known bad
The file 2edb82168379b1a7228928a87236b140N.exe was found to be: Known bad.
Malicious Activity Summary
Urelas
Deletes itself
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Unsigned PE
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-06 23:56
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-06 23:56
Reported
2024-08-06 23:58
Platform
win10v2004-20240802-en
Max time kernel
93s
Max time network
94s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.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\2edb82168379b1a7228928a87236b140N.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
| Description | Indicator | Process | Target |
| PID 2372 wrote to memory of 1388 | N/A | C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 2372 wrote to memory of 1388 | N/A | C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 2372 wrote to memory of 1388 | N/A | C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 2372 wrote to memory of 1988 | N/A | C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2372 wrote to memory of 1988 | N/A | C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2372 wrote to memory of 1988 | N/A | C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.exe
"C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.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 | 74.32.126.40.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 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.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 | |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
Files
memory/2372-0-0x0000000000410000-0x0000000000435000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 3378109fc9b84a9cef2b590c4c8e749d |
| SHA1 | 70fe1c9fa4c29407402db49e49b573ee43ec1335 |
| SHA256 | 251b675083ee6d6287c0c9c252d791581f96c10115f8cadb90498cf89e228abc |
| SHA512 | b028c519d4b81403a3444471a2f130f041c3d9961e65650648cfe940c28968b2c2ec10bbf465e37d7f46b708f51b6ccb509c1fb6723e34a78a8a69ceedc0de65 |
memory/1388-15-0x00000000000D0000-0x00000000000F5000-memory.dmp
memory/2372-17-0x0000000000410000-0x0000000000435000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | f56874ab5030601b0e8c6d35658230a9 |
| SHA1 | c3188bdbb9c98bfa8c7cf658dd79d98a6359eb4a |
| SHA256 | 841d5d4feb344ba5e2a9ab1fb9a01b9f11a4358a33fce12380c589cd593acdcd |
| SHA512 | 10fd8da9f18f8ed1ba46a02d48b9c4adfdac1abe151425252ab78d16bd78df184a85d56f878b727d737be97cfbad0d237ed37b62baeed0b0d1f65432dc066cfe |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | efd90b3ac908d5482af367de3a82184a |
| SHA1 | de9f01d2ed0247b7b347e55c5a09721a60147fb9 |
| SHA256 | 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d |
| SHA512 | 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02 |
memory/1388-20-0x00000000000D0000-0x00000000000F5000-memory.dmp
memory/1388-22-0x00000000000D0000-0x00000000000F5000-memory.dmp
memory/1388-28-0x00000000000D0000-0x00000000000F5000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-06 23:56
Reported
2024-08-06 23:58
Platform
win7-20240729-en
Max time kernel
89s
Max time network
77s
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\2edb82168379b1a7228928a87236b140N.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\2edb82168379b1a7228928a87236b140N.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.exe
"C:\Users\Admin\AppData\Local\Temp\2edb82168379b1a7228928a87236b140N.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/1520-0-0x0000000000230000-0x0000000000255000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 33d98522ada2aaf0f3eae418369f494c |
| SHA1 | 055dc8915178269e087eb0e06a8a20dd61c6a7ac |
| SHA256 | e853a14d86fbc30175b50ee59d6b7f5362f2eeb507d50f560706f1381ee35353 |
| SHA512 | d34415012debdd4aab92040bd88a229dbacafa8ef52dfcc679db0c174ecc8e4c2ce189df8a4936d379b3fe11fb71395e068a17c19acd008971a165fc05d1e517 |
memory/1520-9-0x0000000000580000-0x00000000005A5000-memory.dmp
memory/2160-10-0x0000000000FE0000-0x0000000001005000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | f56874ab5030601b0e8c6d35658230a9 |
| SHA1 | c3188bdbb9c98bfa8c7cf658dd79d98a6359eb4a |
| SHA256 | 841d5d4feb344ba5e2a9ab1fb9a01b9f11a4358a33fce12380c589cd593acdcd |
| SHA512 | 10fd8da9f18f8ed1ba46a02d48b9c4adfdac1abe151425252ab78d16bd78df184a85d56f878b727d737be97cfbad0d237ed37b62baeed0b0d1f65432dc066cfe |
memory/1520-19-0x0000000000230000-0x0000000000255000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | efd90b3ac908d5482af367de3a82184a |
| SHA1 | de9f01d2ed0247b7b347e55c5a09721a60147fb9 |
| SHA256 | 44f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d |
| SHA512 | 6e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02 |
memory/2160-22-0x0000000000FE0000-0x0000000001005000-memory.dmp
memory/2160-24-0x0000000000FE0000-0x0000000001005000-memory.dmp
memory/2160-31-0x0000000000FE0000-0x0000000001005000-memory.dmp