Analysis Overview
SHA256
c89ca41e31e7a575c6ffa74026799ee5f1dd64e2a03beae1402f62a7de7f9471
Threat Level: Known bad
The file 2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_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
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
2024-05-27 18:30
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
2024-05-27 18:30
Reported
2024-05-27 18:33
Platform
win7-20240221-en
Max time kernel
148s
Max time network
149s
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\rewok.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe | N/A |
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rewok.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2864 wrote to memory of 2536 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
| PID 2864 wrote to memory of 2536 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
| PID 2864 wrote to memory of 2536 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
| PID 2864 wrote to memory of 2536 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\rewok.exe
"C:\Users\Admin\AppData\Local\Temp\rewok.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | spinistry.com | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
Files
memory/2864-0-0x0000000000280000-0x0000000000286000-memory.dmp
memory/2864-1-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\rewok.exe
| MD5 | ef030987595a2209bec02017a2744e52 |
| SHA1 | 43ef072e3ec02bb6781ac2e28cc89db78486983f |
| SHA256 | b28a58aca338fbebdf38af4b8968227781e98ebaaadad0f586858e6a1bd1b444 |
| SHA512 | 03a29b5b465470bffc90df171290b3d5f5f4b4e8e204e1eabb4670381b6f8c08153a15a12dbdee850e836ecb55dd0827b4086d3a50b0e839f02bd81e309251df |
memory/2864-13-0x0000000000280000-0x0000000000286000-memory.dmp
memory/2536-23-0x00000000005A0000-0x00000000005A6000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-27 18:30
Reported
2024-05-27 18:33
Platform
win10v2004-20240508-en
Max time kernel
148s
Max time network
157s
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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rewok.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3816 wrote to memory of 3272 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
| PID 3816 wrote to memory of 3272 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
| PID 3816 wrote to memory of 3272 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\rewok.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe"
C:\Users\Admin\AppData\Local\Temp\rewok.exe
"C:\Users\Admin\AppData\Local\Temp\rewok.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 --no-appcompat-clear --field-trial-handle=4592,i,6166776566165096562,4582328833313060853,262144 --variations-seed-version --mojo-platform-channel-handle=4200 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | spinistry.com | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.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 | 154.239.44.20.in-addr.arpa | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| 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 | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
| US | 64.98.135.121:443 | spinistry.com | tcp |
Files
memory/3816-0-0x0000000002120000-0x0000000002126000-memory.dmp
memory/3816-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/3816-8-0x0000000002120000-0x0000000002126000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\rewok.exe
| MD5 | ef030987595a2209bec02017a2744e52 |
| SHA1 | 43ef072e3ec02bb6781ac2e28cc89db78486983f |
| SHA256 | b28a58aca338fbebdf38af4b8968227781e98ebaaadad0f586858e6a1bd1b444 |
| SHA512 | 03a29b5b465470bffc90df171290b3d5f5f4b4e8e204e1eabb4670381b6f8c08153a15a12dbdee850e836ecb55dd0827b4086d3a50b0e839f02bd81e309251df |
memory/3272-25-0x0000000002D60000-0x0000000002D66000-memory.dmp