Analysis Overview
SHA256
394d1f64fce15b2667c21ea8e5997126e1128b71ee753583e86df80312e6f5ca
Threat Level: Known bad
The file 2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_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
2024-02-23 11:02
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 11:02
Reported
2024-02-23 11:05
Platform
win7-20240220-en
Max time kernel
3s
Max time network
71s
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_c9dd1680b1b34fc5d1fb66bddfd3548b_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_c9dd1680b1b34fc5d1fb66bddfd3548b_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 2468 wrote to memory of 1796 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2468 wrote to memory of 1796 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2468 wrote to memory of 1796 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2468 wrote to memory of 1796 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_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/2468-0-0x00000000003E0000-0x00000000003E6000-memory.dmp
memory/2468-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2468-8-0x00000000003E0000-0x00000000003E6000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 1cbec3a9763e1651814a1494cea4f718 |
| SHA1 | 81792cdb9cbadee4d279459415e7976559be8e88 |
| SHA256 | 409df8a3fbc1ab13d5829bee234f0d24f662772c5dec3258fbfcef56c4bb4a3e |
| SHA512 | ac77438646ee735163210c7179892a8396c415465bb5065f9550fc5ae7077eee02402315962df1cf5403b0ea2f06368e936878e4b2880b4243801dad2cfa6546 |
memory/1796-17-0x0000000000380000-0x0000000000386000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-23 11:02
Reported
2024-02-23 11:05
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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_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 2188 wrote to memory of 3988 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2188 wrote to memory of 3988 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2188 wrote to memory of 3988 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_c9dd1680b1b34fc5d1fb66bddfd3548b_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 | 146.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 175.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.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 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.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 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 0.205.248.87.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 | 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 | 8.173.189.20.in-addr.arpa | udp |
Files
memory/2188-0-0x00000000021D0000-0x00000000021D6000-memory.dmp
memory/2188-1-0x00000000021D0000-0x00000000021D6000-memory.dmp
memory/2188-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 1cbec3a9763e1651814a1494cea4f718 |
| SHA1 | 81792cdb9cbadee4d279459415e7976559be8e88 |
| SHA256 | 409df8a3fbc1ab13d5829bee234f0d24f662772c5dec3258fbfcef56c4bb4a3e |
| SHA512 | ac77438646ee735163210c7179892a8396c415465bb5065f9550fc5ae7077eee02402315962df1cf5403b0ea2f06368e936878e4b2880b4243801dad2cfa6546 |
memory/3988-20-0x0000000002120000-0x0000000002126000-memory.dmp