Analysis Overview
SHA256
57ac5ce79f88140eacbc77f0be273a7685e56314812068b625fd452cc13616c1
Threat Level: Known bad
The file 2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-31 15:49
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
2024-05-31 15:49
Reported
2024-05-31 15:52
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
149s
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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\hasfj.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3096 wrote to memory of 2272 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 3096 wrote to memory of 2272 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 3096 wrote to memory of 2272 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 88.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.251.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 106.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 138.201.86.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
| US | 8.8.8.8:53 | mytarta.com | udp |
Files
memory/3096-0-0x0000000002D60000-0x0000000002D66000-memory.dmp
memory/3096-2-0x0000000003010000-0x0000000003016000-memory.dmp
memory/3096-1-0x0000000002D60000-0x0000000002D66000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\hasfj.exe
| MD5 | 4ce5ee58bab81c85040b65fb58e3475c |
| SHA1 | 743e24d5be123bb92a2d9049adb83c2e00b31429 |
| SHA256 | b96b7f46008804d229d68f9f6e0bfb6ab2828622864f44d99cb410e83196ac02 |
| SHA512 | 1c2b95f7b07d6b148af3a4753924a337298e8af54d24c005e8cc56499731a1d17a74a8ba0a322c7393154c2b9cc2c944d4d5482c53cfd7f867db0cc382e911e4 |
memory/2272-23-0x0000000002210000-0x0000000002216000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-31 15:49
Reported
2024-05-31 15:52
Platform
win7-20240221-en
Max time kernel
150s
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\hasfj.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2776 wrote to memory of 1616 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 2776 wrote to memory of 1616 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 2776 wrote to memory of 1616 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 2776 wrote to memory of 1616 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_7d3b385c9bba0e80c388a6de65ad0392_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | mytarta.com | udp |
Files
memory/1616-22-0x0000000000360000-0x0000000000366000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\hasfj.exe
| MD5 | 4ce5ee58bab81c85040b65fb58e3475c |
| SHA1 | 743e24d5be123bb92a2d9049adb83c2e00b31429 |
| SHA256 | b96b7f46008804d229d68f9f6e0bfb6ab2828622864f44d99cb410e83196ac02 |
| SHA512 | 1c2b95f7b07d6b148af3a4753924a337298e8af54d24c005e8cc56499731a1d17a74a8ba0a322c7393154c2b9cc2c944d4d5482c53cfd7f867db0cc382e911e4 |
memory/1616-15-0x0000000000380000-0x0000000000386000-memory.dmp
memory/2776-8-0x0000000000270000-0x0000000000276000-memory.dmp
memory/2776-1-0x0000000000350000-0x0000000000356000-memory.dmp
memory/2776-0-0x0000000000270000-0x0000000000276000-memory.dmp