Analysis Overview
SHA256
1df9b4f11e6bbc316dce0399f0079e620bd6c23a269bc1b2e61aa5b70fb275e0
Threat Level: Known bad
The file 2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
UPX dump on OEP (original entry point)
Detection of CryptoLocker Variants
UPX dump on OEP (original entry point)
Loads dropped DLL
UPX packed file
Executes dropped EXE
Checks computer location settings
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
2024-06-13 03:38
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| 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
2024-06-13 03:38
Reported
2024-06-13 03:41
Platform
win7-20240419-en
Max time kernel
144s
Max time network
148s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| 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_7796225634074d84746f8a668eb0930b_cryptolocker.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | 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_7796225634074d84746f8a668eb0930b_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 2124 wrote to memory of 3044 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2124 wrote to memory of 3044 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2124 wrote to memory of 3044 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2124 wrote to memory of 3044 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_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 |
Files
memory/2124-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2124-1-0x00000000003F0000-0x00000000003F6000-memory.dmp
memory/2124-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2124-9-0x00000000003F0000-0x00000000003F6000-memory.dmp
\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | 4149574ac6b7105642b9ab910f597fe9 |
| SHA1 | bf981560d503211b0c6fe947b2fe4a532f72a492 |
| SHA256 | d50826803946db3ba9e30b1d396b969bebad0f92fc132eb2cabb9e0c2f9010da |
| SHA512 | 648b8c141139e0516b139ced3879f997c20899aa2c163b62562e098bc6af87e548acf5b83ee3eccd362ee2bc2b852ce4d6432b330d9a23d66e6a8b8595749c30 |
memory/3044-16-0x0000000000400000-0x000000000040E000-memory.dmp
memory/3044-25-0x0000000000290000-0x0000000000296000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-13 03:38
Reported
2024-06-13 03:41
Platform
win10v2004-20240611-en
Max time kernel
125s
Max time network
127s
Command Line
Signatures
Detection of CryptoLocker Variants
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4808 wrote to memory of 1776 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 4808 wrote to memory of 1776 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 4808 wrote to memory of 1776 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_7796225634074d84746f8a668eb0930b_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\gewos.exe
"C:\Users\Admin\AppData\Local\Temp\gewos.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 --field-trial-handle=4420,i,4778049104057176787,6631751660692402210,262144 --variations-seed-version --mojo-platform-channel-handle=3752 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 35.212.119.5:443 | nasap.net | tcp |
| US | 8.8.8.8:53 | 5.119.212.35.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 226.21.18.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| NL | 52.111.243.30:443 | tcp | |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
Files
memory/4808-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/4808-1-0x00000000020E0000-0x00000000020E6000-memory.dmp
memory/4808-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4808-9-0x00000000020E0000-0x00000000020E6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | 4149574ac6b7105642b9ab910f597fe9 |
| SHA1 | bf981560d503211b0c6fe947b2fe4a532f72a492 |
| SHA256 | d50826803946db3ba9e30b1d396b969bebad0f92fc132eb2cabb9e0c2f9010da |
| SHA512 | 648b8c141139e0516b139ced3879f997c20899aa2c163b62562e098bc6af87e548acf5b83ee3eccd362ee2bc2b852ce4d6432b330d9a23d66e6a8b8595749c30 |
memory/1776-17-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1776-27-0x00000000006D0000-0x00000000006D6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewosik.exe
| MD5 | dee9c981f17d739150aec7e30291bdfb |
| SHA1 | aed0c8757d9e789f28b77296012788eab51fbbbc |
| SHA256 | e7a5f16de5f21a54d8f44cd687d201e962641c455c62aa1f29b1843d339aa8f4 |
| SHA512 | 48a5622273ccf29b12187954bed61f6c8110a706d33b55f811abdfbce965030f1e8396a7215a52c89394bf9b1eb7222407d7d3b3914120bfda8ec5e544b349a5 |