Analysis Overview
SHA256
b21bc8fc04310760c0d5595516e1b80bdc402a0d15f1fd71b9869de65307d163
Threat Level: Known bad
The file 2024-05-27_6584819104e2fceda94f06fa7ac7d556_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
UPX dump on OEP (original entry point)
UPX dump on OEP (original entry point)
Detection of CryptoLocker Variants
Executes dropped EXE
Checks computer location settings
UPX packed file
Loads dropped DLL
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-27 12:11
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
2024-05-27 12:11
Reported
2024-05-27 12:13
Platform
win7-20240221-en
Max time kernel
149s
Max time network
150s
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\lossy.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_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 2036 wrote to memory of 2520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 2036 wrote to memory of 2520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 2036 wrote to memory of 2520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 2036 wrote to memory of 2520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_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/2036-0-0x0000000008000000-0x000000000800F000-memory.dmp
memory/2036-1-0x0000000000240000-0x0000000000246000-memory.dmp
memory/2036-2-0x0000000000610000-0x0000000000616000-memory.dmp
memory/2036-9-0x0000000000240000-0x0000000000246000-memory.dmp
\Users\Admin\AppData\Local\Temp\lossy.exe
| MD5 | 707ccc6d7a4b65ba6e8a54c11836455b |
| SHA1 | 95b1622b3b743e92300a5e3cf5f89ea7f6e2d176 |
| SHA256 | ca0a52961524eef42a878c8fa067626aa0ae97cb8d3316f204639a571fe0a001 |
| SHA512 | b444b490cddd382e6edf4ba119244008c16dbc9a101049c82de5cc2a077885cd67cec991218daf924d9f69700dde858e24cd74217b2d2d4bd5f27a09b388386d |
memory/2036-16-0x0000000008000000-0x000000000800F000-memory.dmp
memory/2036-13-0x0000000001C70000-0x0000000001C7F000-memory.dmp
memory/2520-18-0x00000000004A0000-0x00000000004A6000-memory.dmp
memory/2520-26-0x0000000008000000-0x000000000800F000-memory.dmp
memory/2520-25-0x0000000000300000-0x0000000000306000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-27 12:11
Reported
2024-05-27 12:13
Platform
win10v2004-20240426-en
Max time kernel
150s
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 |
| 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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_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 1232 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 1232 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
| PID 1232 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\lossy.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_6584819104e2fceda94f06fa7ac7d556_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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.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 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.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 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.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 | 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 | 25.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.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 | 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/1232-0-0x0000000008000000-0x000000000800F000-memory.dmp
memory/1232-1-0x0000000000730000-0x0000000000736000-memory.dmp
memory/1232-3-0x0000000000750000-0x0000000000756000-memory.dmp
memory/1232-9-0x0000000000730000-0x0000000000736000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\lossy.exe
| MD5 | 707ccc6d7a4b65ba6e8a54c11836455b |
| SHA1 | 95b1622b3b743e92300a5e3cf5f89ea7f6e2d176 |
| SHA256 | ca0a52961524eef42a878c8fa067626aa0ae97cb8d3316f204639a571fe0a001 |
| SHA512 | b444b490cddd382e6edf4ba119244008c16dbc9a101049c82de5cc2a077885cd67cec991218daf924d9f69700dde858e24cd74217b2d2d4bd5f27a09b388386d |
memory/2792-18-0x0000000008000000-0x000000000800F000-memory.dmp
memory/1232-17-0x0000000008000000-0x000000000800F000-memory.dmp
memory/2792-20-0x0000000000660000-0x0000000000666000-memory.dmp
memory/2792-26-0x0000000000640000-0x0000000000646000-memory.dmp
memory/2792-27-0x0000000008000000-0x000000000800F000-memory.dmp