Analysis Overview
SHA256
1f838f808e67b4fe8c69f97fe489e7f86589a7c3b83a03e41e7f4e8c434d9568
Threat Level: Known bad
The file 2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Creates a large amount of network flows
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
2024-02-22 20:34
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 20:34
Reported
2024-02-22 20:37
Platform
win7-20240221-en
Max time kernel
11s
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\retln.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_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_648afc78acd72a9f26786ee7d2ef7d90_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 3012 wrote to memory of 2516 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3012 wrote to memory of 2516 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3012 wrote to memory of 2516 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 3012 wrote to memory of 2516 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_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/3012-0-0x0000000000260000-0x0000000000266000-memory.dmp
memory/3012-2-0x0000000000260000-0x0000000000266000-memory.dmp
memory/3012-1-0x0000000000400000-0x0000000000406000-memory.dmp
\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | dc40b9379c679d7eec20377b36552225 |
| SHA1 | 6aee4f7f4a684bd36aee4d0a4b1b7ab6f5deaf1c |
| SHA256 | 9c9bde0b9a8ed77071d7ccb7bfcd5381c9b5b74f3833db78b34b612079a4e164 |
| SHA512 | 444842ab4a9320a50a66b7d6f7db7ad1a4ccdee9d6600148ab3b5c4764bf0ff52b239ee7f79dd87dce71b0b450431ced12b3b7860d651814fdbd929e828cbb94 |
memory/2516-19-0x00000000002E0000-0x00000000002E6000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-22 20:34
Reported
2024-02-22 20:37
Platform
win10v2004-20240221-en
Max time kernel
151s
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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_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 4444 wrote to memory of 1520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 4444 wrote to memory of 1520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
| PID 4444 wrote to memory of 1520 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\retln.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_648afc78acd72a9f26786ee7d2ef7d90_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 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | 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 | 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 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
| US | 8.8.8.8:53 | 0.204.248.87.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 | 0.205.248.87.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 | 191.178.17.96.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 | 18.173.189.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storage-cabinets.info | udp |
Files
memory/4444-0-0x0000000000530000-0x0000000000536000-memory.dmp
memory/4444-1-0x0000000000530000-0x0000000000536000-memory.dmp
memory/4444-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\retln.exe
| MD5 | dc40b9379c679d7eec20377b36552225 |
| SHA1 | 6aee4f7f4a684bd36aee4d0a4b1b7ab6f5deaf1c |
| SHA256 | 9c9bde0b9a8ed77071d7ccb7bfcd5381c9b5b74f3833db78b34b612079a4e164 |
| SHA512 | 444842ab4a9320a50a66b7d6f7db7ad1a4ccdee9d6600148ab3b5c4764bf0ff52b239ee7f79dd87dce71b0b450431ced12b3b7860d651814fdbd929e828cbb94 |
memory/1520-21-0x00000000021D0000-0x00000000021D6000-memory.dmp