Analysis Overview
SHA256
fee37357fdf781f827d0c1231eadf4a30b66f6081ee04ca57cbc9a5100c7540a
Threat Level: Known bad
The file d16d445722fcebd5b2c37bfe3ff79036 was found to be: Known bad.
Malicious Activity Summary
Urelas family
Urelas
Loads dropped DLL
Checks computer location settings
Deletes itself
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-17 17:14
Signatures
Urelas family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-17 17:14
Reported
2024-03-17 17:16
Platform
win7-20240221-en
Max time kernel
122s
Max time network
126s
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\d16d445722fcebd5b2c37bfe3ff79036.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.exe
"C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.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/1556-0-0x00000000001F0000-0x0000000000221000-memory.dmp
\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | 3a34d8f9b601456c000ca2655b553c76 |
| SHA1 | ca18fb77803e0e27f212d483b1f07f8dabd5abfd |
| SHA256 | b48ba6dc5422a03534b2b0c3b5938f1abe8cd3ca815be69627b19154fabce5aa |
| SHA512 | 68c31ca487a43773301b2272b0fbe628d6b5be62f1ccf4b6340b107023e396c436ca0d55c1ed0949e0ce43be546c677e0bc492c88c2566af601574374072e168 |
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 84f7ac848c93111d2cf12ba7c7c87c36 |
| SHA1 | 8bfb3409486b626307c09badd688c726ca3c5b76 |
| SHA256 | 3fa668132b33f643e67a76f05ab51582276d55ee5d108a1762798587aa6193c0 |
| SHA512 | 7a11b6cf78abd2b10f54e17af4fa6a1746792d1ca44277a98108ae7e1dfa32923fba818dc18504e7b644f90b849c9f970a8fdd960a10bd5f32f8fa641688ce78 |
memory/2172-9-0x0000000000F90000-0x0000000000FC1000-memory.dmp
memory/1556-17-0x00000000001F0000-0x0000000000221000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 0750e4580a3e9076e82bdc6ad33ba927 |
| SHA1 | b1e526b3833feda0e3b0738c6865fdac6360bf07 |
| SHA256 | 74428e568204ea0d1c31570864cb96b1c2b672880f7575220957bf5fc2b24d89 |
| SHA512 | 303b2cb8e644b336d7bf0892eadc84b414afdc41216719721aa0cf27fc18ecea1a2e943f07813c41d55c4166e489f89ec61a4fcead679ed3de8b323ecb42a8d9 |
memory/2172-20-0x0000000000F90000-0x0000000000FC1000-memory.dmp
memory/2172-21-0x0000000000F90000-0x0000000000FC1000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-17 17:14
Reported
2024-03-17 17:16
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
156s
Command Line
Signatures
Urelas
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.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
| Description | Indicator | Process | Target |
| PID 2064 wrote to memory of 2404 | N/A | C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 2064 wrote to memory of 2404 | N/A | C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 2064 wrote to memory of 2404 | N/A | C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.exe | C:\Users\Admin\AppData\Local\Temp\biudfw.exe |
| PID 2064 wrote to memory of 4680 | N/A | C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2064 wrote to memory of 4680 | N/A | C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2064 wrote to memory of 4680 | N/A | C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.exe
"C:\Users\Admin\AppData\Local\Temp\d16d445722fcebd5b2c37bfe3ff79036.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 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 187.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| KR | 218.54.47.76:11120 | tcp | |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 100.5.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.71.91.104.in-addr.arpa | udp |
| KR | 218.54.47.74:11150 | tcp | |
| US | 8.8.8.8:53 | 196.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 197.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| KR | 218.54.47.76:11170 | tcp | |
| US | 8.8.8.8:53 | 19.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 201.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.178.17.96.in-addr.arpa | udp |
| KR | 218.54.47.77:11150 | tcp | |
| US | 8.8.8.8:53 | 140.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 181.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.112.168.52.in-addr.arpa | udp |
| GB | 96.17.178.181:80 | tcp |
Files
memory/2064-0-0x00000000002E0000-0x0000000000311000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\biudfw.exe
| MD5 | ca9e53442e22e11b6959830a52e3818d |
| SHA1 | 6ef53e0eda45eb13735f5b350e876f743f6db36b |
| SHA256 | f58dbc21e606cadcc6a3f3565547cd8b5a24bbd42459e0d20d115b6012a5dd58 |
| SHA512 | 29ff405ddc9e2c52b212937b52c19ce0b6b4a94648a462dbf8fe947bd2078001799e73142c5e5c92a0ff18fc152eedb707fb40192223e09abcd0704d3bc5677a |
memory/2404-12-0x0000000000490000-0x00000000004C1000-memory.dmp
memory/2064-17-0x00000000002E0000-0x0000000000311000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
| MD5 | 84f7ac848c93111d2cf12ba7c7c87c36 |
| SHA1 | 8bfb3409486b626307c09badd688c726ca3c5b76 |
| SHA256 | 3fa668132b33f643e67a76f05ab51582276d55ee5d108a1762798587aa6193c0 |
| SHA512 | 7a11b6cf78abd2b10f54e17af4fa6a1746792d1ca44277a98108ae7e1dfa32923fba818dc18504e7b644f90b849c9f970a8fdd960a10bd5f32f8fa641688ce78 |
C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
| MD5 | 0750e4580a3e9076e82bdc6ad33ba927 |
| SHA1 | b1e526b3833feda0e3b0738c6865fdac6360bf07 |
| SHA256 | 74428e568204ea0d1c31570864cb96b1c2b672880f7575220957bf5fc2b24d89 |
| SHA512 | 303b2cb8e644b336d7bf0892eadc84b414afdc41216719721aa0cf27fc18ecea1a2e943f07813c41d55c4166e489f89ec61a4fcead679ed3de8b323ecb42a8d9 |
memory/2404-20-0x0000000000490000-0x00000000004C1000-memory.dmp
memory/2404-21-0x0000000000490000-0x00000000004C1000-memory.dmp