Analysis Overview
SHA256
96b4bd5b7368b7edebc5a515978c32be9373046ec3488cb1ae6741eb8519c548
Threat Level: Known bad
The file 2024-05-27_a1911cf727fe388c5a6806262a0a78ef_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
Creates a large amount of network flows
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of UnmapMainImage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-27 18:37
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
2024-05-27 18:37
Reported
2024-05-27 18:40
Platform
win7-20240419-en
Max time kernel
14s
Max time network
125s
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\retln.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe | N/A |
Creates a large amount of network flows
Enumerates physical storage devices
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\retln.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1860 wrote to memory of 2316 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1860 wrote to memory of 2316 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1860 wrote to memory of 2316 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1860 wrote to memory of 2316 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\retln.exe
"C:\Users\Admin\AppData\Local\Temp\retln.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
Files
memory/1860-8-0x0000000000310000-0x0000000000316000-memory.dmp
memory/1860-0-0x0000000000310000-0x0000000000316000-memory.dmp
memory/1860-1-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 830634c406589c2469c155a650eacf8c |
| SHA1 | 9704f506599b910e43245d77aa637d250ff70e55 |
| SHA256 | 858d80c54c4054f77da3c66de98caa79cff6befdea99090e7c91b4d8a1818e17 |
| SHA512 | 5ed1f6eafc4dc935f323e89a55315590a33609bf154c34f1e48b5f3612f42749dbb0a204c26170ea9a4bd132b48a96143f95c77d32c3f1abc68888f7ff69a3ff |
memory/2316-23-0x00000000005C0000-0x00000000005C6000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-27 18:37
Reported
2024-05-27 18:40
Platform
win10v2004-20240226-en
Max time kernel
152s
Max time network
157s
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\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\retln.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4964 wrote to memory of 1640 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 4964 wrote to memory of 1640 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 4964 wrote to memory of 1640 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_a1911cf727fe388c5a6806262a0a78ef_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\retln.exe
"C:\Users\Admin\AppData\Local\Temp\retln.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=4140 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 224.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| FR | 142.250.74.234:443 | chromewebstore.googleapis.com | tcp |
| US | 8.8.8.8:53 | 234.74.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 213.143.182.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
Files
memory/4964-0-0x00000000021E0000-0x00000000021E6000-memory.dmp
memory/4964-1-0x00000000021E0000-0x00000000021E6000-memory.dmp
memory/4964-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 830634c406589c2469c155a650eacf8c |
| SHA1 | 9704f506599b910e43245d77aa637d250ff70e55 |
| SHA256 | 858d80c54c4054f77da3c66de98caa79cff6befdea99090e7c91b4d8a1818e17 |
| SHA512 | 5ed1f6eafc4dc935f323e89a55315590a33609bf154c34f1e48b5f3612f42749dbb0a204c26170ea9a4bd132b48a96143f95c77d32c3f1abc68888f7ff69a3ff |
memory/1640-19-0x0000000002D60000-0x0000000002D66000-memory.dmp