Analysis Overview
SHA256
98d4374754b3c2f1d6cd2c79f705f85f63935fb00c7a67bc4c289b638ed85feb
Threat Level: Known bad
The file 2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Creates a large amount of network flows
Enumerates physical storage devices
Unsigned PE
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-23 12:39
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
2024-02-23 12:39
Reported
2024-02-23 12:42
Platform
win7-20240221-en
Max time kernel
13s
Max time network
122s
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_60bfe906d800bf4e1d36e16442812187_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_60bfe906d800bf4e1d36e16442812187_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 548 wrote to memory of 832 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 548 wrote to memory of 832 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 548 wrote to memory of 832 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 548 wrote to memory of 832 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_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/548-0-0x0000000000260000-0x0000000000266000-memory.dmp
memory/548-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/548-2-0x0000000000260000-0x0000000000266000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | e0671dc105ee61eced488bee1c94ba8e |
| SHA1 | 465f8db788448669dfc029e9ecbedfea1f48dc57 |
| SHA256 | b62698acab5cbb076c858f01c4247c26d630c79fea5c34dda92dfed4fae58643 |
| SHA512 | 9f06ab205dfd92c2bac1a801d9f278cb23cfa341510d839b08244285885f1472e97c74a54e040e1cbfb94b3d0a932485ac4da461c90c307bd7eca99ebd7af616 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-23 12:39
Reported
2024-02-23 12:42
Platform
win10v2004-20240221-en
Max time kernel
151s
Max time network
153s
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\2024-02-23_60bfe906d800bf4e1d36e16442812187_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 4832 wrote to memory of 5016 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 4832 wrote to memory of 5016 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 4832 wrote to memory of 5016 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_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 | 85.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 179.178.17.96.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 | 205.47.74.20.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 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 86.23.85.13.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 | 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 | 172.178.17.96.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 | 43.229.111.52.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 |
| US | 8.8.8.8:53 | 23.173.189.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
Files
memory/4832-0-0x0000000000650000-0x0000000000656000-memory.dmp
memory/4832-1-0x0000000000650000-0x0000000000656000-memory.dmp
memory/4832-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | e0671dc105ee61eced488bee1c94ba8e |
| SHA1 | 465f8db788448669dfc029e9ecbedfea1f48dc57 |
| SHA256 | b62698acab5cbb076c858f01c4247c26d630c79fea5c34dda92dfed4fae58643 |
| SHA512 | 9f06ab205dfd92c2bac1a801d9f278cb23cfa341510d839b08244285885f1472e97c74a54e040e1cbfb94b3d0a932485ac4da461c90c307bd7eca99ebd7af616 |
memory/5016-21-0x00000000006F0000-0x00000000006F6000-memory.dmp