Analysis Overview
SHA256
a916bf519645d34dc9a55f47fb864b9074406be5311a88dd5193ddef8262a3e0
Threat Level: Known bad
The file 2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Creates a large amount of network flows
Unsigned PE
Enumerates physical storage devices
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-22 17:48
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: behavioral1
Detonation Overview
Submitted
2024-02-22 17:48
Reported
2024-02-22 17:50
Platform
win7-20240220-en
Max time kernel
16s
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\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_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\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_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 3032 wrote to memory of 2884 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3032 wrote to memory of 2884 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3032 wrote to memory of 2884 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3032 wrote to memory of 2884 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_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/3032-0-0x00000000002C0000-0x00000000002C6000-memory.dmp
memory/3032-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/3032-3-0x00000000002C0000-0x00000000002C6000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 533b9b2805c6ed4944bec0d6be0ec4dd |
| SHA1 | 415737c064168b442a055a405a22c6c154d9b35a |
| SHA256 | ede8df99d99dd15dedff2705d65c52485817a644946f58818c46715e69d3d2d2 |
| SHA512 | 887f72d098848aec2eeb231c8c753698c70645a748d904d3ce39a4634fa2dda5591aa70685fcfa7f73f75387f0da84ce44d5941feba611179c3e79585c7232b7 |
memory/2884-17-0x00000000003C0000-0x00000000003C6000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-22 17:48
Reported
2024-02-22 17:50
Platform
win10v2004-20240221-en
Max time kernel
150s
Max time network
152s
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-1-5-21-2828415587-3732861812-1919322417-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_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 3904 wrote to memory of 4792 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3904 wrote to memory of 4792 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3904 wrote to memory of 4792 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_aa64fef12286342a6b5de2fd9bfa853c_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 | 68.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 44.179.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 41.110.16.96.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 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 134.71.91.104.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 | 82.179.17.96.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 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 177.178.17.96.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 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
Files
memory/3904-0-0x0000000002260000-0x0000000002266000-memory.dmp
memory/3904-1-0x0000000002260000-0x0000000002266000-memory.dmp
memory/3904-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 533b9b2805c6ed4944bec0d6be0ec4dd |
| SHA1 | 415737c064168b442a055a405a22c6c154d9b35a |
| SHA256 | ede8df99d99dd15dedff2705d65c52485817a644946f58818c46715e69d3d2d2 |
| SHA512 | 887f72d098848aec2eeb231c8c753698c70645a748d904d3ce39a4634fa2dda5591aa70685fcfa7f73f75387f0da84ce44d5941feba611179c3e79585c7232b7 |
memory/4792-23-0x0000000002D60000-0x0000000002D66000-memory.dmp