Analysis Overview
SHA256
8e7f65b7757f2c5dd10e43bb62e88531d6d6e9d4e293ee7b6133befffe24a178
Threat Level: Known bad
The file 2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
UPX dump on OEP (original entry point)
Detection of CryptoLocker Variants
UPX dump on OEP (original entry point)
Checks computer location settings
UPX packed file
Executes dropped EXE
Loads dropped DLL
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-10 21:39
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| 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 |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-10 21:39
Reported
2024-06-10 21:42
Platform
win7-20240419-en
Max time kernel
144s
Max time network
149s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| 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\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1704 wrote to memory of 2864 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 1704 wrote to memory of 2864 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 1704 wrote to memory of 2864 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 1704 wrote to memory of 2864 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_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 |
| 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 | 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/1704-0-0x0000000008000000-0x000000000800E000-memory.dmp
memory/1704-1-0x0000000000430000-0x0000000000436000-memory.dmp
memory/1704-2-0x00000000005C0000-0x00000000005C6000-memory.dmp
memory/1704-9-0x0000000000430000-0x0000000000436000-memory.dmp
\Users\Admin\AppData\Local\Temp\hasfj.exe
| MD5 | f58d74c8d2bf1cf499c288fc12f51c8a |
| SHA1 | ed63d8015129e3dfbe498d9713179062a98393c8 |
| SHA256 | 12917caeba52726a1fc9fe5ebd292c84e61b172825097654a2ab8749254a431f |
| SHA512 | 9a30f01a54b1e1a271f14323b8e95785c27356e94aaca7582f1a054f0209e9fc3d9d0c8e8f49b0c314ab3ad117b918493b8e1cfc4b7ae2841a5ff8c357ca1a00 |
memory/1704-15-0x0000000008000000-0x000000000800E000-memory.dmp
memory/2864-17-0x0000000008000000-0x000000000800E000-memory.dmp
memory/2864-19-0x0000000000370000-0x0000000000376000-memory.dmp
memory/2864-26-0x00000000002D0000-0x00000000002D6000-memory.dmp
memory/2864-27-0x0000000008000000-0x000000000800E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-10 21:39
Reported
2024-06-10 21:42
Platform
win10v2004-20240508-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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_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 |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4676 wrote to memory of 220 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 4676 wrote to memory of 220 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
| PID 4676 wrote to memory of 220 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\hasfj.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_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 |
| 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 | 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/4676-0-0x0000000008000000-0x000000000800E000-memory.dmp
memory/4676-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/4676-2-0x0000000003150000-0x0000000003156000-memory.dmp
memory/4676-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\hasfj.exe
| MD5 | f58d74c8d2bf1cf499c288fc12f51c8a |
| SHA1 | ed63d8015129e3dfbe498d9713179062a98393c8 |
| SHA256 | 12917caeba52726a1fc9fe5ebd292c84e61b172825097654a2ab8749254a431f |
| SHA512 | 9a30f01a54b1e1a271f14323b8e95785c27356e94aaca7582f1a054f0209e9fc3d9d0c8e8f49b0c314ab3ad117b918493b8e1cfc4b7ae2841a5ff8c357ca1a00 |
memory/4676-18-0x0000000008000000-0x000000000800E000-memory.dmp
memory/220-19-0x0000000008000000-0x000000000800E000-memory.dmp
memory/220-21-0x0000000003010000-0x0000000003016000-memory.dmp
memory/220-27-0x0000000002D60000-0x0000000002D66000-memory.dmp
memory/220-28-0x0000000008000000-0x000000000800E000-memory.dmp