Analysis Overview
SHA256
7c3a4e5e2e70335a50398b338d845e0801b6977bc835bd80a6e7eddd5380a18d
Threat Level: Known bad
The file 7c3a4e5e2e70335a50398b338d845e0801b6977bc835bd80a6e7eddd5380a18d was found to be: Known bad.
Malicious Activity Summary
Urelas family
Urelas
Deletes itself
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-16 21:27
Signatures
Urelas family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-16 21:27
Reported
2024-03-16 21:30
Platform
win7-20240221-en
Max time kernel
117s
Max time network
121s
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\7c3a4e5e2e70335a50398b338d845e0801b6977bc835bd80a6e7eddd5380a18d.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\7c3a4e5e2e70335a50398b338d845e0801b6977bc835bd80a6e7eddd5380a18d.exe
"C:\Users\Admin\AppData\Local\Temp\7c3a4e5e2e70335a50398b338d845e0801b6977bc835bd80a6e7eddd5380a18d.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 | 112.175.88.209:11120 | tcp | |
| KR | 112.175.88.208:11150 | tcp | |
| KR | 112.175.88.209:11170 | tcp | |
| KR | 112.175.88.207:11150 | tcp |
Files
memory/1956-0-0x00000000010B0000-0x00000000010D8000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 21547521a6fd3879a82439960675de00 |
| SHA1 | b1d9197b022d8f214c69953ee8f0c1801994a563 |
| SHA256 | e7edd3eae7e3566670fa409808132264c3bb0f07d087acabe0cedf371af8b2b5 |
| SHA512 | 71340bb609679abf1c1cd69dd786ed295a7d20d860a1da18912c3df796cc8bcd10cfd00930298f6f0c2358fa47c5c49e0623bed2e9f2eaad1b71d9a282fda2de |
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | fdbefa0c1e752d50214d4c836107e114 |
| SHA1 | 432deef8edfca72a89d2c77cc2fcbb649db6ebb8 |
| SHA256 | 61d2a491d28d4cff00de84e52578ffd45047d18e5cd0b3da1f1b7a3f70d4be47 |
| SHA512 | 9956007e15aa408f2971274cbc21c70e88091cc1176bfa35adc06b9cd0fcf193dfdda659b1729913056a6e0230440a79f44a20230036869430c7210e09b7e677 |
memory/2624-9-0x0000000000F70000-0x0000000000F98000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | d0eca34489c003255da2ab93c491e6ee |
| SHA1 | a72bb0bf2f8b425f905b8357545b22db3e42821b |
| SHA256 | a389de244b8ffcd8dcad2dc138e688439d682c61c5114ce5ef3d31f28145cedb |
| SHA512 | a5b826a94bfae596d138a8fead4aadfa0ea7ac029e643c700485a16d014222862049efba8b9e1a4bb6a1694cab6a0c743e9b959763dd8a9d91b6bb7ae36fe670 |
memory/1956-17-0x00000000010B0000-0x00000000010D8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | d8b6fb23d659bed3f6b1cf40a104e95a |
| SHA1 | 07c9c74af6b0fe9b78bb1b3aed5bdc1e0b5de952 |
| SHA256 | f28d96334bf66f634f899c800b4d5c6195bcf407cb073761f8a4f30a4061f136 |
| SHA512 | e841cd9283c63a92395b4221492e2ae6b06d9c4108fcbbfe7d8a7928cfca405c14c0634a6388a4f18da3db611696ea797f9b825ed314d1640a17aa767593e412 |
memory/2624-20-0x0000000000F70000-0x0000000000F98000-memory.dmp
memory/2624-21-0x0000000000F70000-0x0000000000F98000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-16 21:27
Reported
2024-03-16 21:30
Platform
win10v2004-20231215-en
Max time kernel
92s
Max time network
122s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\7c3a4e5e2e70335a50398b338d845e0801b6977bc835bd80a6e7eddd5380a18d.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
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\7c3a4e5e2e70335a50398b338d845e0801b6977bc835bd80a6e7eddd5380a18d.exe
"C:\Users\Admin\AppData\Local\Temp\7c3a4e5e2e70335a50398b338d845e0801b6977bc835bd80a6e7eddd5380a18d.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 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| KR | 112.175.88.209:11120 | tcp | |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| KR | 112.175.88.208:11150 | 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 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| KR | 112.175.88.209:11170 | tcp | |
| US | 8.8.8.8:53 | 186.178.17.96.in-addr.arpa | udp |
| KR | 112.175.88.207:11150 | tcp | |
| US | 8.8.8.8:53 | 190.178.17.96.in-addr.arpa | udp |
Files
memory/3036-0-0x0000000000600000-0x0000000000628000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 36bd298f96e4aaab5bb2c302b35fb2a5 |
| SHA1 | 221755e11cbff8be720bb18bbde999137c63c49e |
| SHA256 | 144e727fd30c96907af7e7c3dc8f76af4c448ade28fa6c545dc6c2d456534763 |
| SHA512 | 0014820647403fa713902f13936cd7ce340dc07840db3a92f5c696f513b170fb9d50e10089581eb0eeeb5d0a259a411a89d5aea06100726b02390b67c113fa5a |
memory/5008-15-0x0000000000F00000-0x0000000000F28000-memory.dmp
memory/3036-17-0x0000000000600000-0x0000000000628000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | d0eca34489c003255da2ab93c491e6ee |
| SHA1 | a72bb0bf2f8b425f905b8357545b22db3e42821b |
| SHA256 | a389de244b8ffcd8dcad2dc138e688439d682c61c5114ce5ef3d31f28145cedb |
| SHA512 | a5b826a94bfae596d138a8fead4aadfa0ea7ac029e643c700485a16d014222862049efba8b9e1a4bb6a1694cab6a0c743e9b959763dd8a9d91b6bb7ae36fe670 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | d8b6fb23d659bed3f6b1cf40a104e95a |
| SHA1 | 07c9c74af6b0fe9b78bb1b3aed5bdc1e0b5de952 |
| SHA256 | f28d96334bf66f634f899c800b4d5c6195bcf407cb073761f8a4f30a4061f136 |
| SHA512 | e841cd9283c63a92395b4221492e2ae6b06d9c4108fcbbfe7d8a7928cfca405c14c0634a6388a4f18da3db611696ea797f9b825ed314d1640a17aa767593e412 |
memory/5008-20-0x0000000000F00000-0x0000000000F28000-memory.dmp
memory/5008-21-0x0000000000F00000-0x0000000000F28000-memory.dmp