Analysis Overview
SHA256
0edb5a71269986b02bfea9b1a16a0f7c4bdb73fe99083dacb2f30b524214d871
Threat Level: Known bad
The file 2024-02-22_f335673f25f838240b76ee713f786f02_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Loads dropped DLL
Executes dropped EXE
Checks computer location settings
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 20:47
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 20:47
Reported
2024-02-22 20:50
Platform
win7-20240221-en
Max time kernel
4s
Max time network
82s
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_f335673f25f838240b76ee713f786f02_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_f335673f25f838240b76ee713f786f02_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 1712 wrote to memory of 2120 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1712 wrote to memory of 2120 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1712 wrote to memory of 2120 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1712 wrote to memory of 2120 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_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 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
Files
memory/1712-0-0x0000000000340000-0x0000000000346000-memory.dmp
memory/1712-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/1712-2-0x0000000000340000-0x0000000000346000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 7bd6a9cb61b48e862024957f6cefdaff |
| SHA1 | 7a8a365c2d57966b8643b30e3ff43d491489737c |
| SHA256 | eb88d4d90d75c9fc6b963e07c46f12d94c766514863af95efb6bc7c26980fe35 |
| SHA512 | 348dc6d94e06e296e9211a8537c1429fbbb9d5c21593fd2596f6442bf1d9931ec160e379b06c24cc9e5838cc64415252831b47b6a4ff6fb5a686c56a9bc15a33 |
memory/2120-23-0x0000000000390000-0x0000000000396000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-22 20:47
Reported
2024-02-22 20:50
Platform
win10v2004-20240221-en
Max time kernel
150s
Max time network
148s
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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_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 2348 wrote to memory of 4020 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2348 wrote to memory of 4020 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2348 wrote to memory of 4020 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_f335673f25f838240b76ee713f786f02_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 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 68.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 176.178.17.96.in-addr.arpa | 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 | 9.228.82.20.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 | 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 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.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 | 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 | 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 | 13.227.111.52.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 | 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/2348-0-0x00000000021C0000-0x00000000021C6000-memory.dmp
memory/2348-1-0x00000000021C0000-0x00000000021C6000-memory.dmp
memory/2348-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 7bd6a9cb61b48e862024957f6cefdaff |
| SHA1 | 7a8a365c2d57966b8643b30e3ff43d491489737c |
| SHA256 | eb88d4d90d75c9fc6b963e07c46f12d94c766514863af95efb6bc7c26980fe35 |
| SHA512 | 348dc6d94e06e296e9211a8537c1429fbbb9d5c21593fd2596f6442bf1d9931ec160e379b06c24cc9e5838cc64415252831b47b6a4ff6fb5a686c56a9bc15a33 |
memory/4020-21-0x00000000005E0000-0x00000000005E6000-memory.dmp