Analysis Overview
SHA256
228e913b3a21f68b1649e71d6e947b4596db6bd7d3dacdc224c0dfb087fe6892
Threat Level: Known bad
The file 2024-02-23_a149418ee29df4dde05b41d2222699bc_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
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
2024-02-23 12:51
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 12:51
Reported
2024-02-23 12:54
Platform
win7-20240221-en
Max time kernel
12s
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_a149418ee29df4dde05b41d2222699bc_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_a149418ee29df4dde05b41d2222699bc_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 624 wrote to memory of 1920 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 624 wrote to memory of 1920 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 624 wrote to memory of 1920 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 624 wrote to memory of 1920 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_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/624-0-0x00000000003E0000-0x00000000003E6000-memory.dmp
memory/624-2-0x00000000003E0000-0x00000000003E6000-memory.dmp
memory/624-1-0x0000000000400000-0x0000000000406000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 66e265f539eda4c87789f8fb8f333ca0 |
| SHA1 | 888e961d6bd7ac92fa832bb6ab5cf6cf07c7cc87 |
| SHA256 | 8af8cecb7ae45ff3c473b87b19ec8e6da6c9195d8f2a4dc13fb294f2e8ecf294 |
| SHA512 | 7aeb1b626180cb5d4efdcdd56149bb73f524e99295782e1dc8c7bc673b13457293751950966501894bff5c92bf69982af248e0b334cb3b75d591a8b97f14db43 |
memory/1920-19-0x0000000000260000-0x0000000000266000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-23 12:51
Reported
2024-02-23 12:54
Platform
win10v2004-20240221-en
Max time kernel
150s
Max time network
156s
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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_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 1780 wrote to memory of 4432 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1780 wrote to memory of 4432 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1780 wrote to memory of 4432 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_a149418ee29df4dde05b41d2222699bc_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 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | 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 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.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 | 180.178.17.96.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 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 173.178.17.96.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 | 123.10.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
Files
memory/1780-0-0x00000000022D0000-0x00000000022D6000-memory.dmp
memory/1780-1-0x00000000022D0000-0x00000000022D6000-memory.dmp
memory/1780-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 66e265f539eda4c87789f8fb8f333ca0 |
| SHA1 | 888e961d6bd7ac92fa832bb6ab5cf6cf07c7cc87 |
| SHA256 | 8af8cecb7ae45ff3c473b87b19ec8e6da6c9195d8f2a4dc13fb294f2e8ecf294 |
| SHA512 | 7aeb1b626180cb5d4efdcdd56149bb73f524e99295782e1dc8c7bc673b13457293751950966501894bff5c92bf69982af248e0b334cb3b75d591a8b97f14db43 |
memory/4432-20-0x0000000002120000-0x0000000002126000-memory.dmp