Analysis Overview
SHA256
68d130c466aa6b4cc5c3adb2997c055076232302e43eac2d914a8e086f966e09
Threat Level: Known bad
The file 2024-05-27_23e2286807afacdfdeee102e1e9d2439_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
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 19:07
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
2024-05-27 19:07
Reported
2024-05-27 19:10
Platform
win10v2004-20240508-en
Max time kernel
136s
Max time network
127s
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_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\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 |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2388 wrote to memory of 4992 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2388 wrote to memory of 4992 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2388 wrote to memory of 4992 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_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 --no-appcompat-clear --field-trial-handle=3920,i,1067197275908310731,12785105794523264014,262144 --variations-seed-version --mojo-platform-channel-handle=3848 /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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| 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 | 226.20.18.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| NL | 23.62.61.72:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 72.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.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 | 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 | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
Files
memory/2388-0-0x0000000000690000-0x0000000000696000-memory.dmp
memory/2388-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2388-8-0x0000000000690000-0x0000000000696000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | 6ea976dcf261a4c90ab519df8282afc2 |
| SHA1 | 62c006064fcbac9bde25f6f359f5730f235db3aa |
| SHA256 | 2d0090cffb0a137d0a6491677e8e484e0c1cdb3681bc05259ea6cf30d3e6ecfd |
| SHA512 | d1a50624c9603a6720360291c83d30ab7d3ce2f7327e3c9e03a1f3536caee63991f6591f197cbf816bbffd6c894f322d6859755b218b6e7e4828af3da2425e61 |
memory/4992-25-0x0000000000780000-0x0000000000786000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewosik.exe
| MD5 | c0c33f4e7e39ebdb0ef15fd46816f5ab |
| SHA1 | c2d978c1bd42c0f6762fa92239f0299786fb684d |
| SHA256 | b12bd036a45223ede0ccf91e834082ac2a6c11767660de13b96f583d1eaa0c24 |
| SHA512 | 3238b6a74cc32e1993f2e8c63f1c1534bdcd3b5685cce60dfc6266a5c3535ab09148e1e9f36eb5bf9d09251abde63b873be5abdb14b1f9304aaa5756ff9dab4c |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-27 19:07
Reported
2024-05-27 19:10
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\2024-05-27_23e2286807afacdfdeee102e1e9d2439_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\2024-05-27_23e2286807afacdfdeee102e1e9d2439_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 2340 wrote to memory of 3056 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2340 wrote to memory of 3056 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2340 wrote to memory of 3056 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2340 wrote to memory of 3056 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_23e2286807afacdfdeee102e1e9d2439_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/2340-0-0x0000000000310000-0x0000000000316000-memory.dmp
memory/2340-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2340-8-0x0000000000310000-0x0000000000316000-memory.dmp
\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | 6ea976dcf261a4c90ab519df8282afc2 |
| SHA1 | 62c006064fcbac9bde25f6f359f5730f235db3aa |
| SHA256 | 2d0090cffb0a137d0a6491677e8e484e0c1cdb3681bc05259ea6cf30d3e6ecfd |
| SHA512 | d1a50624c9603a6720360291c83d30ab7d3ce2f7327e3c9e03a1f3536caee63991f6591f197cbf816bbffd6c894f322d6859755b218b6e7e4828af3da2425e61 |
memory/3056-16-0x0000000000340000-0x0000000000346000-memory.dmp