Analysis Overview
SHA256
c41d4004f10d1594470160dd951d8d974fe1a5fa29025be7995b02eecd94106d
Threat Level: Shows suspicious behavior
The file 2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker was found to be: Shows suspicious behavior.
Malicious Activity Summary
UPX packed file
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Unsigned PE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-25 06:55
Signatures
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 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-25 06:55
Reported
2024-08-25 06:58
Platform
win7-20240729-en
Max time kernel
148s
Max time network
149s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rewok.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_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 |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\rewok.exe | N/A |
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rewok.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2688 wrote to memory of 2248 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
| PID 2688 wrote to memory of 2248 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
| PID 2688 wrote to memory of 2248 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
| PID 2688 wrote to memory of 2248 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\rewok.exe
"C:\Users\Admin\AppData\Local\Temp\rewok.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | spinistry.com | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
Files
memory/2688-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2688-1-0x0000000000280000-0x0000000000286000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\rewok.exe
| MD5 | 11964a9b6cfba36811d1d684bef72eaa |
| SHA1 | 5458addf44be51a158b3f3b3e16c29506ebde09f |
| SHA256 | 674d349b2b7bdd4be1d969e618107fceb3808e0064c96df90ee3ff8b54bb4d8a |
| SHA512 | cc874f80dadd3a1ee2d109173e5d7423c1b4a9f8b16667603b79c1c9de335dab48b9952476d81ece5389e85fd7a76d70ecd8b99617cfcab312fd157105d95453 |
memory/2248-17-0x0000000000370000-0x0000000000376000-memory.dmp
memory/2688-9-0x0000000000280000-0x0000000000286000-memory.dmp
memory/2688-0-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-25 06:55
Reported
2024-08-25 06:58
Platform
win10v2004-20240802-en
Max time kernel
149s
Max time network
151s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rewok.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 |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\rewok.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 852 wrote to memory of 3824 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
| PID 852 wrote to memory of 3824 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
| PID 852 wrote to memory of 3824 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-25_a76390fafba98b5d45bd1d8b9590515f_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\rewok.exe
"C:\Users\Admin\AppData\Local\Temp\rewok.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | spinistry.com | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 147.142.123.92.in-addr.arpa | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 8.8.8.8:53 | 210.143.182.52.in-addr.arpa | udp |
Files
memory/852-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/852-1-0x0000000002240000-0x0000000002246000-memory.dmp
memory/852-2-0x0000000002240000-0x0000000002246000-memory.dmp
memory/852-3-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\rewok.exe
| MD5 | 11964a9b6cfba36811d1d684bef72eaa |
| SHA1 | 5458addf44be51a158b3f3b3e16c29506ebde09f |
| SHA256 | 674d349b2b7bdd4be1d969e618107fceb3808e0064c96df90ee3ff8b54bb4d8a |
| SHA512 | cc874f80dadd3a1ee2d109173e5d7423c1b4a9f8b16667603b79c1c9de335dab48b9952476d81ece5389e85fd7a76d70ecd8b99617cfcab312fd157105d95453 |
memory/3824-26-0x0000000002080000-0x0000000002086000-memory.dmp