Analysis Overview
SHA256
25ae6b227770d5911b2248a3ed8f38653902f40b2d276d07ef88be23b7c0d00a
Threat Level: Known bad
The file 2024-06-13_4b332d6960ccf7570c9432085da65dce_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
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious use of UnmapMainImage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-13 03:32
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: behavioral2
Detonation Overview
Submitted
2024-06-13 03:32
Reported
2024-06-13 03:35
Platform
win10v2004-20240508-en
Max time kernel
150s
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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_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 3252 wrote to memory of 3232 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 3252 wrote to memory of 3232 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 3252 wrote to memory of 3232 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_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 | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
Files
memory/3252-0-0x0000000002110000-0x0000000002116000-memory.dmp
memory/3252-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/3252-8-0x0000000002110000-0x0000000002116000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | e820838fce01787e3adabce13ff8632d |
| SHA1 | 127e79cbb74649d30cc67391c6aa921f1901dbd1 |
| SHA256 | 65d625c4342086bca7b3850ab7fd9e6f2661b67ffc78e5b8dfd909f290b07ba2 |
| SHA512 | 3eebf65e11ac0b4cbff52c9d3d6c43dad6fef3763d413b234f1bf03bf694bd5418c63d8092d27a3f9f4722fc582aed15b9de0bc7024507a383a4dc56604bd892 |
memory/3232-25-0x0000000000670000-0x0000000000676000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-13 03:32
Reported
2024-06-13 03:35
Platform
win7-20240221-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\2024-06-13_4b332d6960ccf7570c9432085da65dce_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\2024-06-13_4b332d6960ccf7570c9432085da65dce_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 2932 wrote to memory of 2252 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2932 wrote to memory of 2252 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2932 wrote to memory of 2252 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2932 wrote to memory of 2252 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4b332d6960ccf7570c9432085da65dce_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/2932-0-0x00000000003C0000-0x00000000003C6000-memory.dmp
memory/2932-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2932-8-0x00000000003C0000-0x00000000003C6000-memory.dmp
\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | e820838fce01787e3adabce13ff8632d |
| SHA1 | 127e79cbb74649d30cc67391c6aa921f1901dbd1 |
| SHA256 | 65d625c4342086bca7b3850ab7fd9e6f2661b67ffc78e5b8dfd909f290b07ba2 |
| SHA512 | 3eebf65e11ac0b4cbff52c9d3d6c43dad6fef3763d413b234f1bf03bf694bd5418c63d8092d27a3f9f4722fc582aed15b9de0bc7024507a383a4dc56604bd892 |
memory/2252-23-0x00000000003A0000-0x00000000003A6000-memory.dmp