Analysis Overview
SHA256
829baaf34b074e7efe50d68a19a022d3085e2c8b74bff6742785145dfd4b6c2c
Threat Level: Known bad
The file 2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Creates a large amount of network flows
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious use of UnmapMainImage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-23 10:53
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-23 10:53
Reported
2024-02-23 10:56
Platform
win10v2004-20240221-en
Max time kernel
151s
Max time network
154s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3538781373-1545967067-4263767959-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\retln.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2392 wrote to memory of 2020 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2392 wrote to memory of 2020 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2392 wrote to memory of 2020 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\retln.exe
"C:\Users\Admin\AppData\Local\Temp\retln.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 190.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 200.79.70.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
Files
memory/2392-0-0x0000000002350000-0x0000000002356000-memory.dmp
memory/2392-1-0x0000000002350000-0x0000000002356000-memory.dmp
memory/2392-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 83ecf5187dcb5a86da7a441b56e3b74a |
| SHA1 | d213e561c064ed3f343d9ee42934c355d485124a |
| SHA256 | 16df08ec826bd1b514ef0f129cdda4eaf78c28ef798f294804981e6d3f78ef4f |
| SHA512 | b151732e9ea488c3d43a4f1cddfe01cbdfb0351f2f5d3b9ff09ab1e08268474d936c1c7f5df6e9653404e1d87826db42745c7fa2cf1207067bde956fb38a16b5 |
memory/2020-24-0x0000000002010000-0x0000000002016000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-23 10:53
Reported
2024-02-23 10:56
Platform
win7-20240221-en
Max time kernel
18s
Max time network
121s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\retln.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe | N/A |
Creates a large amount of network flows
Enumerates physical storage devices
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\retln.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1860 wrote to memory of 2280 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1860 wrote to memory of 2280 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1860 wrote to memory of 2280 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1860 wrote to memory of 2280 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_8a5ca1f1ea6229115d0a471c96a80dc7_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\retln.exe
"C:\Users\Admin\AppData\Local\Temp\retln.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
Files
memory/1860-0-0x0000000000340000-0x0000000000346000-memory.dmp
memory/1860-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/1860-2-0x0000000000340000-0x0000000000346000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 83ecf5187dcb5a86da7a441b56e3b74a |
| SHA1 | d213e561c064ed3f343d9ee42934c355d485124a |
| SHA256 | 16df08ec826bd1b514ef0f129cdda4eaf78c28ef798f294804981e6d3f78ef4f |
| SHA512 | b151732e9ea488c3d43a4f1cddfe01cbdfb0351f2f5d3b9ff09ab1e08268474d936c1c7f5df6e9653404e1d87826db42745c7fa2cf1207067bde956fb38a16b5 |
memory/2280-17-0x00000000003C0000-0x00000000003C6000-memory.dmp