Analysis Overview
SHA256
ac27aac6351d9d30b38cb6e0c020c8e1c59e145e0c149d2e0fc30f89c698d547
Threat Level: Known bad
The file 2024-02-22_7331189f179bf45624e853f42159b67d_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 UnmapMainImage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-22 17:41
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
2024-02-22 17:41
Reported
2024-02-22 17:44
Platform
win7-20240221-en
Max time kernel
12s
Max time network
124s
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\2024-02-22_7331189f179bf45624e853f42159b67d_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\2024-02-22_7331189f179bf45624e853f42159b67d_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 2384 wrote to memory of 2500 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2384 wrote to memory of 2500 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2384 wrote to memory of 2500 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 2384 wrote to memory of 2500 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_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/2384-0-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/2384-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2384-1-0x00000000005A0000-0x00000000005A6000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 8dad3616d8187ad43e69dc75f097ed03 |
| SHA1 | 7d9d3bcd9074ecd73eaf19c873a750156b82787b |
| SHA256 | 7cf7aa7cd7ffae8343a8673fc1e44e53f2a50f6c62456f4f1fba35e0cca3dbba |
| SHA512 | 543e5b762eb55298764de17ebe93516040e227437a236a504e46a8a8471574d8160afbc1ba7aabd2fbc10fd7cf9a29e2302b59e2aec5cb58c594c969c61659b2 |
memory/2500-23-0x0000000000260000-0x0000000000266000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-22 17:41
Reported
2024-02-22 17:44
Platform
win10v2004-20240221-en
Max time kernel
150s
Max time network
152s
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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_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 1152 wrote to memory of 1352 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1152 wrote to memory of 1352 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 1152 wrote to memory of 1352 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_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 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 209.78.101.95.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| 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 | 200.197.79.204.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 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.71.91.104.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 | 152.78.101.95.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 | 192.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 19.229.111.52.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 | 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 | 210.143.182.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
Files
memory/1152-0-0x00000000021D0000-0x00000000021D6000-memory.dmp
memory/1152-1-0x00000000021D0000-0x00000000021D6000-memory.dmp
memory/1152-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | 8dad3616d8187ad43e69dc75f097ed03 |
| SHA1 | 7d9d3bcd9074ecd73eaf19c873a750156b82787b |
| SHA256 | 7cf7aa7cd7ffae8343a8673fc1e44e53f2a50f6c62456f4f1fba35e0cca3dbba |
| SHA512 | 543e5b762eb55298764de17ebe93516040e227437a236a504e46a8a8471574d8160afbc1ba7aabd2fbc10fd7cf9a29e2302b59e2aec5cb58c594c969c61659b2 |
memory/1352-20-0x0000000002D60000-0x0000000002D66000-memory.dmp