Analysis Overview
SHA256
92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080
Threat Level: Known bad
The file 92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N was found to be: Known bad.
Malicious Activity Summary
Urelas
Checks computer location settings
Deletes itself
Executes dropped EXE
Loads dropped DLL
Unsigned PE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-10-13 11:13
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-10-13 11:13
Reported
2024-10-13 11:16
Platform
win7-20241010-en
Max time kernel
90s
Max time network
91s
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\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.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\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.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\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.exe
"C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.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/2356-0-0x0000000000DE0000-0x0000000000E12000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 3f389dcbe2efc1317672b2ac03ee8203 |
| SHA1 | c1821c7169b9aff676260fc6787fd462e375a9d6 |
| SHA256 | a883f2b7c73a08f88f7b4a1758592df8526ada16b4b28bdbc06dd6da2dcf0379 |
| SHA512 | fda9ca733c5b455ed889ceed871290f61148d4e4c8481a4cb6e19dfb95714c34849e556b9866ce9e6a8c8c96a2f2d9c9f6f83b1f7114593823386246603049ce |
memory/2356-9-0x00000000008E0000-0x0000000000912000-memory.dmp
memory/1284-10-0x00000000000C0000-0x00000000000F2000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 676482554c49f761e4f44639b6e96633 |
| SHA1 | 4a2ec30252639ab31b09694f49df2b01def0a56c |
| SHA256 | be4fdbd3339f0c3f757adb6ffacee9d92a378abbfb9251a1d06ec0dbf3aa200f |
| SHA512 | 034bed4cc8767d8100cd5c32d63f59b4c7dd4020c58d75600e4e0dd0fd8d4267a6c29e17a6c55357473784c499e92448bf4f0d40a80c7929f62b6e26b412b4e4 |
memory/2356-19-0x0000000000DE0000-0x0000000000E12000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 26625b4ca7658f7ba4dc7d982782323c |
| SHA1 | 574aa314998c39e683675ccf457b0305341a4aaf |
| SHA256 | c494e0ffeee72023dac244366c08072f677ba328ba805f9e480abc2824e99283 |
| SHA512 | 5a9af4c6be10240dec0d33b37bc6f6836f1db5d0a2a9dd158d63848a8a97dad68e2d9217aca2b2d1cf122d9534aba0d23b247f6686c4ff934bd7035a927d9b9d |
memory/1284-22-0x00000000000C0000-0x00000000000F2000-memory.dmp
memory/1284-24-0x00000000000C0000-0x00000000000F2000-memory.dmp
memory/1284-31-0x00000000000C0000-0x00000000000F2000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-10-13 11:13
Reported
2024-10-13 11:15
Platform
win10v2004-20241007-en
Max time kernel
96s
Max time network
97s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.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:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.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\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.exe
"C:\Users\Admin\AppData\Local\Temp\92ea1c4a69e8b1f2708691e8a6160e78f74c224d7a498f7f3cecb93a745ce080N.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 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| KR | 218.54.47.74:11150 | tcp | |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.117.19.2.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
Files
memory/3468-0-0x0000000000CE0000-0x0000000000D12000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | c454d11cd16427db01e5c9f338601de6 |
| SHA1 | 4c7ed8985f3805cc8cc2c1eebec0d1c5a068131d |
| SHA256 | 116f48a90c9a11ede03c165312ea672913bd195d3cc900b012573dc446622698 |
| SHA512 | d6e979640b89efe891f8ea32ba82f4127a5a8609973936484eb2508f53c11a45b186bcd1c6a1480faa3d6c6cafc3add9d0b0ad19b63a584a0547edc62c461545 |
memory/936-13-0x0000000000620000-0x0000000000652000-memory.dmp
memory/3468-18-0x0000000000CE0000-0x0000000000D12000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 676482554c49f761e4f44639b6e96633 |
| SHA1 | 4a2ec30252639ab31b09694f49df2b01def0a56c |
| SHA256 | be4fdbd3339f0c3f757adb6ffacee9d92a378abbfb9251a1d06ec0dbf3aa200f |
| SHA512 | 034bed4cc8767d8100cd5c32d63f59b4c7dd4020c58d75600e4e0dd0fd8d4267a6c29e17a6c55357473784c499e92448bf4f0d40a80c7929f62b6e26b412b4e4 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 26625b4ca7658f7ba4dc7d982782323c |
| SHA1 | 574aa314998c39e683675ccf457b0305341a4aaf |
| SHA256 | c494e0ffeee72023dac244366c08072f677ba328ba805f9e480abc2824e99283 |
| SHA512 | 5a9af4c6be10240dec0d33b37bc6f6836f1db5d0a2a9dd158d63848a8a97dad68e2d9217aca2b2d1cf122d9534aba0d23b247f6686c4ff934bd7035a927d9b9d |
memory/936-21-0x0000000000620000-0x0000000000652000-memory.dmp
memory/936-23-0x0000000000620000-0x0000000000652000-memory.dmp
memory/936-30-0x0000000000620000-0x0000000000652000-memory.dmp