Analysis Overview
SHA256
293e6bcf5cc5b6fd823c6b19add8afe6c8cc5667ee0af3dadf44a8402db87e58
Threat Level: Known bad
The file 2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
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
2024-05-28 01:29
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
2024-05-28 01:29
Reported
2024-05-28 01:31
Platform
win7-20240508-en
Max time kernel
10s
Max time network
119s
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\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_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\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_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 3068 wrote to memory of 2704 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3068 wrote to memory of 2704 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3068 wrote to memory of 2704 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3068 wrote to memory of 2704 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_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/3068-0-0x00000000003C0000-0x00000000003C6000-memory.dmp
memory/3068-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/3068-8-0x00000000003C0000-0x00000000003C6000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | e46cc3d1dabb4928b2abcf056fc41b6f |
| SHA1 | be3cbcaa5c3d1019ab1801f789f3f23d20067c40 |
| SHA256 | 58d6dda9aa697d05e4a337d98cf72818fd95b846bef15f4a7985495de483cecc |
| SHA512 | f772df1ac9623a0406dab9532721d74afc0b9d97df37dd5c4578e58237cfb55f261f32dfe7d4d4bf559e299d8c4889b2339ea6171c3495f42516c7135aa13e0c |
memory/2704-23-0x0000000000310000-0x0000000000316000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-28 01:29
Reported
2024-05-28 01:31
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
154s
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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_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 228 wrote to memory of 1592 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 228 wrote to memory of 1592 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 228 wrote to memory of 1592 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_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 |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | 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 | 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 | 206.23.85.13.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 | 96.136.73.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 203.107.17.2.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 | 88.156.103.20.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 | 29.243.111.52.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 | 43.58.199.20.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 | 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 |
Files
memory/228-0-0x0000000002120000-0x0000000002126000-memory.dmp
memory/228-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/228-8-0x0000000002120000-0x0000000002126000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | e46cc3d1dabb4928b2abcf056fc41b6f |
| SHA1 | be3cbcaa5c3d1019ab1801f789f3f23d20067c40 |
| SHA256 | 58d6dda9aa697d05e4a337d98cf72818fd95b846bef15f4a7985495de483cecc |
| SHA512 | f772df1ac9623a0406dab9532721d74afc0b9d97df37dd5c4578e58237cfb55f261f32dfe7d4d4bf559e299d8c4889b2339ea6171c3495f42516c7135aa13e0c |
memory/1592-25-0x0000000002160000-0x0000000002166000-memory.dmp