Analysis Overview
SHA256
7a5acd9fd0adcb951f40cfe533c8f7dd9f7a19ba56487b3b606108097f976c53
Threat Level: Known bad
The file 2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_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
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
2024-02-22 17:38
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
2024-02-22 17:38
Reported
2024-02-22 17:41
Platform
win10v2004-20240221-en
Max time kernel
150s
Max time network
147s
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-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_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 1612 wrote to memory of 4932 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1612 wrote to memory of 4932 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1612 wrote to memory of 4932 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_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 | 148.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.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 | 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 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | 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 | 191.178.17.96.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 | 181.178.17.96.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/1612-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/1612-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/1612-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | ffc35fc562442f6fb46cf352f3461d5f |
| SHA1 | 0618fba8726f5b3d299c088e6b99577561bfa061 |
| SHA256 | a2d5d7599d88262c21f0a916d10fbe3e3ea62acc4aaad79acd5533869f858c91 |
| SHA512 | 4c23d24956700318e8a13b59a82df525be737546f09462aa4bca04c29b0aa0a42c9d501e5139975c2ff6798ce10fd2d6d6d021b1c5f0b3d2caf9c99a982e2fd7 |
memory/4932-22-0x0000000002210000-0x0000000002216000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-22 17:38
Reported
2024-02-22 17:41
Platform
win7-20240221-en
Max time kernel
10s
Max time network
154s
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_5c1398d8bf8f62c68ea581b470a2c497_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_5c1398d8bf8f62c68ea581b470a2c497_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 2332 wrote to memory of 2540 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2332 wrote to memory of 2540 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2332 wrote to memory of 2540 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2332 wrote to memory of 2540 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_5c1398d8bf8f62c68ea581b470a2c497_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/2332-0-0x00000000002A0000-0x00000000002A6000-memory.dmp
memory/2332-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2332-2-0x00000000002A0000-0x00000000002A6000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | ffc35fc562442f6fb46cf352f3461d5f |
| SHA1 | 0618fba8726f5b3d299c088e6b99577561bfa061 |
| SHA256 | a2d5d7599d88262c21f0a916d10fbe3e3ea62acc4aaad79acd5533869f858c91 |
| SHA512 | 4c23d24956700318e8a13b59a82df525be737546f09462aa4bca04c29b0aa0a42c9d501e5139975c2ff6798ce10fd2d6d6d021b1c5f0b3d2caf9c99a982e2fd7 |
memory/2540-18-0x0000000000270000-0x0000000000276000-memory.dmp