Analysis Overview
SHA256
1306752b59ffdb15f4a3cd61c54cbc400d71207cee150dd67dd45e90987a7932
Threat Level: Known bad
The file 2024-02-22_10c24dcc69a62127ce58d390091a317e_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 21:24
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 21:24
Reported
2024-02-22 21:26
Platform
win10v2004-20240221-en
Max time kernel
150s
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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_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 4724 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 4724 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 4724 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_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 |
| US | 8.8.8.8:53 | 72.32.126.40.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 | 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 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | 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 | 193.178.17.96.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 | 208.178.17.96.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 |
| US | 8.8.8.8:53 | 169.253.116.51.in-addr.arpa | udp |
Files
memory/4724-0-0x0000000002250000-0x0000000002256000-memory.dmp
memory/4724-1-0x0000000002250000-0x0000000002256000-memory.dmp
memory/4724-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | fff9f5ba0cdf87e537132c073d69645b |
| SHA1 | 66f598aa7ea5dd52ce8420f623b2985189d8af87 |
| SHA256 | 2e03dea3d573a5f5cac3a14eca74a1e5bd63b6627d6753db78247318321bc7d4 |
| SHA512 | 5bb1962fd700933871b9d0fad1d19744b395b8c2b7cb68b007da7c776d41cf84b0ff43203f3df4e8a796e3494057d56594028ab051c8ed3c241315ddb99716c1 |
memory/2792-21-0x00000000020D0000-0x00000000020D6000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-22 21:24
Reported
2024-02-22 21:26
Platform
win7-20240221-en
Max time kernel
13s
Max time network
120s
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_10c24dcc69a62127ce58d390091a317e_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_10c24dcc69a62127ce58d390091a317e_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 2208 wrote to memory of 2512 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2208 wrote to memory of 2512 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2208 wrote to memory of 2512 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2208 wrote to memory of 2512 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_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/2208-0-0x00000000003E0000-0x00000000003E6000-memory.dmp
memory/2208-2-0x00000000003E0000-0x00000000003E6000-memory.dmp
memory/2208-1-0x0000000000400000-0x0000000000406000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | fff9f5ba0cdf87e537132c073d69645b |
| SHA1 | 66f598aa7ea5dd52ce8420f623b2985189d8af87 |
| SHA256 | 2e03dea3d573a5f5cac3a14eca74a1e5bd63b6627d6753db78247318321bc7d4 |
| SHA512 | 5bb1962fd700933871b9d0fad1d19744b395b8c2b7cb68b007da7c776d41cf84b0ff43203f3df4e8a796e3494057d56594028ab051c8ed3c241315ddb99716c1 |
memory/2512-21-0x0000000000270000-0x0000000000276000-memory.dmp