Analysis Overview
SHA256
1f806b21c34c0510c5b9041e36e6f7b14800b8f59eb1d3683f24eef41b176146
Threat Level: Known bad
The file 2024-06-02_f5ef3878a215808de9842f5df3174c06_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)
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
UPX packed file
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-02 04:49
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| 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 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-02 04:49
Reported
2024-06-02 04:52
Platform
win7-20231129-en
Max time kernel
149s
Max time network
153s
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 |
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\2024-06-02_f5ef3878a215808de9842f5df3174c06_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 |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1688 wrote to memory of 1756 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 1688 wrote to memory of 1756 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 1688 wrote to memory of 1756 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 1688 wrote to memory of 1756 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_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 |
Files
memory/1688-0-0x0000000008000000-0x000000000800F000-memory.dmp
memory/1688-1-0x00000000002C0000-0x00000000002C6000-memory.dmp
memory/1688-2-0x0000000000310000-0x0000000000316000-memory.dmp
memory/1688-8-0x00000000002C0000-0x00000000002C6000-memory.dmp
\Users\Admin\AppData\Local\Temp\lossy.exe
| MD5 | 095fbbc4d1384c2791faeea0b0cfb189 |
| SHA1 | cee651161a81fd64a909e5219d954eaef6a408ee |
| SHA256 | 5a0902a28c4e2450e527f896d9598c5c868d9acc8b0f28ce3d6f257fb6878b7c |
| SHA512 | 0814f57573e5f8a96d7c6e273e05268f2e199244b04a15b8c58bc594ccfae8722ebc68999bf15b383612c3deab550ef296a05d9ffa77149d129f33bcb0cba212 |
memory/1688-15-0x0000000008000000-0x000000000800F000-memory.dmp
memory/1756-24-0x00000000001D0000-0x00000000001D6000-memory.dmp
memory/1756-17-0x0000000000290000-0x0000000000296000-memory.dmp
memory/1756-25-0x0000000008000000-0x000000000800F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-02 04:49
Reported
2024-06-02 04:52
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
155s
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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_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 |
| N/A | N/A | N/A | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 736 wrote to memory of 1248 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 736 wrote to memory of 1248 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 736 wrote to memory of 1248 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_f5ef3878a215808de9842f5df3174c06_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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 2ndry.com | udp |
| US | 8.8.8.8:53 | 97.61.62.23.in-addr.arpa | 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 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.251.17.2.in-addr.arpa | 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 | 172.210.232.199.in-addr.arpa | 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 | 43.58.199.20.in-addr.arpa | 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 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | 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 | 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 | 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/736-0-0x0000000008000000-0x000000000800F000-memory.dmp
memory/736-1-0x0000000000620000-0x0000000000626000-memory.dmp
memory/736-3-0x0000000000640000-0x0000000000646000-memory.dmp
memory/736-2-0x0000000000620000-0x0000000000626000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\lossy.exe
| MD5 | 095fbbc4d1384c2791faeea0b0cfb189 |
| SHA1 | cee651161a81fd64a909e5219d954eaef6a408ee |
| SHA256 | 5a0902a28c4e2450e527f896d9598c5c868d9acc8b0f28ce3d6f257fb6878b7c |
| SHA512 | 0814f57573e5f8a96d7c6e273e05268f2e199244b04a15b8c58bc594ccfae8722ebc68999bf15b383612c3deab550ef296a05d9ffa77149d129f33bcb0cba212 |
memory/1248-17-0x0000000008000000-0x000000000800F000-memory.dmp
memory/1248-20-0x00000000020E0000-0x00000000020E6000-memory.dmp
memory/736-19-0x0000000008000000-0x000000000800F000-memory.dmp
memory/1248-26-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/1248-27-0x0000000008000000-0x000000000800F000-memory.dmp