Analysis Overview
SHA256
1fce562d33b6ed2fd5e6afe4cf856bfcc21e679ba8d7344527a530a233697ae5
Threat Level: Known bad
The file 2024-05-26_aa44caf6478289043774feece217573a_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Enumerates physical storage devices
Unsigned PE
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-26 03:50
Signatures
Detection of CryptoLocker Variants
| 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
2024-05-26 03:50
Reported
2024-05-26 03:52
Platform
win7-20240508-en
Max time kernel
121s
Max time network
122s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| 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\gewos.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe | N/A |
Enumerates physical storage devices
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2980 wrote to memory of 2548 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2980 wrote to memory of 2548 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2980 wrote to memory of 2548 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2980 wrote to memory of 2548 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\gewos.exe
"C:\Users\Admin\AppData\Local\Temp\gewos.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 35.212.119.5:443 | nasap.net | tcp |
Files
memory/2980-0-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/2980-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2980-8-0x00000000005A0000-0x00000000005A6000-memory.dmp
\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | d046b310113223544a59c64b46e2721a |
| SHA1 | 30850ef625daacf9f55539f51f248cd31dc7a477 |
| SHA256 | 24b1d02f70ecf999693bf5e2225bd642ff5bab6ac6c78931f1e1d50306c79f1b |
| SHA512 | bb93247e5518e5e8b263cb5124eec3a1478c0393ecb818bd1d5bb3b3803a3e9ab235439758337e90e9f907b9bac566fe47062bc171993286596c0ed1d08e183d |
memory/2548-23-0x0000000000380000-0x0000000000386000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-26 03:50
Reported
2024-05-26 03:52
Platform
win10v2004-20240226-en
Max time kernel
142s
Max time network
150s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2260 wrote to memory of 4992 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2260 wrote to memory of 4992 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2260 wrote to memory of 4992 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_aa44caf6478289043774feece217573a_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\gewos.exe
"C:\Users\Admin\AppData\Local\Temp\gewos.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3996 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 35.212.119.5:443 | nasap.net | tcp |
| US | 8.8.8.8:53 | 5.119.212.35.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 226.20.18.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| GB | 142.250.187.202:443 | tcp | |
| 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 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 27.178.89.13.in-addr.arpa | udp |
Files
memory/2260-0-0x00000000021D0000-0x00000000021D6000-memory.dmp
memory/2260-1-0x00000000021D0000-0x00000000021D6000-memory.dmp
memory/2260-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | d046b310113223544a59c64b46e2721a |
| SHA1 | 30850ef625daacf9f55539f51f248cd31dc7a477 |
| SHA256 | 24b1d02f70ecf999693bf5e2225bd642ff5bab6ac6c78931f1e1d50306c79f1b |
| SHA512 | bb93247e5518e5e8b263cb5124eec3a1478c0393ecb818bd1d5bb3b3803a3e9ab235439758337e90e9f907b9bac566fe47062bc171993286596c0ed1d08e183d |
memory/4992-25-0x0000000002200000-0x0000000002206000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewosik.exe
| MD5 | 2f46acc858654b2fc3ed644895eeaa87 |
| SHA1 | 4c4f0eb3f4a5298d4152881277932dfbe07beb09 |
| SHA256 | 8a93b1618cf8a42deff24d2bd50bf8066ba7bac9c7de148d3cb6b86007b1e417 |
| SHA512 | 7382af2d4bc46d519e62eb15283bf3de61a9051c2ea9f1f828323fe4d992669fe6aed8b89b82659092cbb1107eb7cbb00f75a9d52f911a9900f8e0058240c8e7 |