Analysis Overview
SHA256
5696a123e2420ad015dd20b7e15198792b32a079557b6f89ce3b96dc773f71af
Threat Level: Known bad
The file 6bb73a3ecda5d7f7fcdb2a9be988f6e0N.exe was found to be: Known bad.
Malicious Activity Summary
Urelas
Urelas family
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Deletes itself
System Location Discovery: System Language Discovery
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-13 06:47
Signatures
Urelas family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-13 06:47
Reported
2024-08-13 06:49
Platform
win7-20240704-en
Max time kernel
91s
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\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.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\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.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\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.exe
"C:\Users\Admin\AppData\Local\Temp\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.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
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | a8df7d6669bcaa6ce5351339fe4abf2e |
| SHA1 | 07f919f1fccf982024bc0ab4c387140654e51d95 |
| SHA256 | 2faf6611aeb06d781dfbb85cdad35a04ef839c65e14e8920564a5c9f014b048d |
| SHA512 | 6e641fcd5e93584a87adc1e9c9ad6b4e7bcebd49f325128087d135c8260d57bef55b9cfa78b1499cd97f0c711ae9d5a3327845c12effa978eb13d3a8971d88b8 |
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | a8a405d9721e5a83a9ed23ece0bfb95d |
| SHA1 | 19c70a5ded247f80cd80b066b756de4af4a7c6cd |
| SHA256 | 9ad46ab8c9a73e1236574c5b1a24e3833663aec1054a6aeca4af8fbc35d60b4f |
| SHA512 | 1ca7fa0ab17940e8112617ab6f2c38f14931e86aa4f71d0e5651e3df49aa7d7190f927abdcadd48b9d9633185a55fb10d91defa2b8ca89d06455aa24b959b45d |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 2930c042c9ee5e07f321f2134a0c7edc |
| SHA1 | ee39f41eaf6ce3c8d917a89e65959414ae0088e6 |
| SHA256 | a328475bbb730da292b83ed6cabbdbfc0616f042296f0c6fa356c5368ffc1309 |
| SHA512 | 2da91d5effc116d8c8661c2a99f1d9c2aaffda0f776551dc7ad1911fdb2765591e5b441b9a1fe0090bcda8ed24d180b563ed2c127676cf1de40001e4b15b5506 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-13 06:47
Reported
2024-08-13 06:49
Platform
win10v2004-20240802-en
Max time kernel
108s
Max time network
109s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.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\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\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3932 wrote to memory of 1452 | N/A | C:\Users\Admin\AppData\Local\Temp\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 3932 wrote to memory of 1452 | N/A | C:\Users\Admin\AppData\Local\Temp\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 3932 wrote to memory of 1452 | N/A | C:\Users\Admin\AppData\Local\Temp\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 3932 wrote to memory of 2188 | N/A | C:\Users\Admin\AppData\Local\Temp\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3932 wrote to memory of 2188 | N/A | C:\Users\Admin\AppData\Local\Temp\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3932 wrote to memory of 2188 | N/A | C:\Users\Admin\AppData\Local\Temp\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.exe
"C:\Users\Admin\AppData\Local\Temp\6bb73a3ecda5d7f7fcdb2a9be988f6e0N.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 | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.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 | |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| 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 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 147.142.123.92.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 0d2d6c3456512740f9e074c6af30b821 |
| SHA1 | 0d484fd4063e38f6cf31a1e9d568b32e39b27a42 |
| SHA256 | 2dbaa4b3c5a1f88a3ca13d8c82f6c72c5da27d67d1fefd3d08cd29d05238f454 |
| SHA512 | a9795e966eb5be471041243434e007edfd26df6c68da0ebcddf2d39819459bfaeb75f0f31fb61e953a78b9c07cf2cb1ab4d97d4aba73ca0aa11e7467dc6aaefb |
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | a8a405d9721e5a83a9ed23ece0bfb95d |
| SHA1 | 19c70a5ded247f80cd80b066b756de4af4a7c6cd |
| SHA256 | 9ad46ab8c9a73e1236574c5b1a24e3833663aec1054a6aeca4af8fbc35d60b4f |
| SHA512 | 1ca7fa0ab17940e8112617ab6f2c38f14931e86aa4f71d0e5651e3df49aa7d7190f927abdcadd48b9d9633185a55fb10d91defa2b8ca89d06455aa24b959b45d |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 2930c042c9ee5e07f321f2134a0c7edc |
| SHA1 | ee39f41eaf6ce3c8d917a89e65959414ae0088e6 |
| SHA256 | a328475bbb730da292b83ed6cabbdbfc0616f042296f0c6fa356c5368ffc1309 |
| SHA512 | 2da91d5effc116d8c8661c2a99f1d9c2aaffda0f776551dc7ad1911fdb2765591e5b441b9a1fe0090bcda8ed24d180b563ed2c127676cf1de40001e4b15b5506 |