Analysis Overview
SHA256
3a83ee9cfb1e820ea71be2b85b88599fdc871e110c23ab4d0fdf4ae65ad8bd08
Threat Level: Known bad
The file 2024-06-13_a4069a3ffa18917ea23e39806e290458_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)
UPX packed file
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-13 03:46
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
2024-06-13 03:46
Reported
2024-06-13 03:49
Platform
win7-20240508-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 |
| 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 |
| 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\lossy.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_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 |
| N/A | N/A | N/A | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2008 wrote to memory of 2956 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 2008 wrote to memory of 2956 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 2008 wrote to memory of 2956 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 2008 wrote to memory of 2956 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\lossy.exe
"C:\Users\Admin\AppData\Local\Temp\lossy.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
Files
memory/2008-0-0x0000000008000000-0x000000000800E000-memory.dmp
memory/2008-1-0x0000000000520000-0x0000000000526000-memory.dmp
memory/2008-2-0x0000000001C90000-0x0000000001C96000-memory.dmp
memory/2008-9-0x0000000000520000-0x0000000000526000-memory.dmp
\Users\Admin\AppData\Local\Temp\lossy.exe
| MD5 | 8207fffa0c0ed4b9d34e2d3f71239fa4 |
| SHA1 | 5b9cedc2be34a2f83842e484ef5d05453fe40ed9 |
| SHA256 | 7746f0d65808e86108d75947eb862200e922d4535c67e1f680e28a38ec659a28 |
| SHA512 | a9f02b972425e21cd7ca59e67420bd68b2aafa4a06c4445c2b9c8549c083d62ffe7442bf0626e0f84457d5c7e9a8a4ef8db013c36c235a47f2cea8ebb6bb16ae |
memory/2008-13-0x0000000001DE0000-0x0000000001DEE000-memory.dmp
memory/2956-18-0x0000000008000000-0x000000000800E000-memory.dmp
memory/2008-17-0x0000000008000000-0x000000000800E000-memory.dmp
memory/2956-27-0x0000000000240000-0x0000000000246000-memory.dmp
memory/2956-20-0x0000000000280000-0x0000000000286000-memory.dmp
memory/2956-28-0x0000000008000000-0x000000000800E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-13 03:46
Reported
2024-06-13 03:49
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
157s
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 |
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 |
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\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\lossy.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 |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4160 wrote to memory of 1172 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 4160 wrote to memory of 1172 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 4160 wrote to memory of 1172 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_a4069a3ffa18917ea23e39806e290458_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\lossy.exe
"C:\Users\Admin\AppData\Local\Temp\lossy.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
Files
memory/4160-0-0x0000000008000000-0x000000000800E000-memory.dmp
memory/4160-1-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/4160-2-0x00000000020E0000-0x00000000020E6000-memory.dmp
memory/4160-9-0x00000000005A0000-0x00000000005A6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\lossy.exe
| MD5 | 8207fffa0c0ed4b9d34e2d3f71239fa4 |
| SHA1 | 5b9cedc2be34a2f83842e484ef5d05453fe40ed9 |
| SHA256 | 7746f0d65808e86108d75947eb862200e922d4535c67e1f680e28a38ec659a28 |
| SHA512 | a9f02b972425e21cd7ca59e67420bd68b2aafa4a06c4445c2b9c8549c083d62ffe7442bf0626e0f84457d5c7e9a8a4ef8db013c36c235a47f2cea8ebb6bb16ae |
memory/4160-18-0x0000000008000000-0x000000000800E000-memory.dmp
memory/1172-20-0x00000000006D0000-0x00000000006D6000-memory.dmp
memory/1172-26-0x0000000000590000-0x0000000000596000-memory.dmp
memory/1172-27-0x0000000008000000-0x000000000800E000-memory.dmp