Analysis Overview
SHA256
14fd78050b05f4e997ae15b78a2fe6e3112d47b386bf7f603005b5b7e3bf15d1
Threat Level: Known bad
The file 2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
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
2024-05-25 00:36
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
2024-05-25 00:36
Reported
2024-05-25 00:39
Platform
win10v2004-20240508-en
Max time kernel
134s
Max time network
149s
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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\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 3740 wrote to memory of 4524 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 3740 wrote to memory of 4524 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 3740 wrote to memory of 4524 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_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 | 183.142.211.20.in-addr.arpa | udp |
| 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 | 226.21.18.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 32.251.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.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 |
Files
memory/3740-0-0x00000000021C0000-0x00000000021C6000-memory.dmp
memory/3740-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/3740-8-0x00000000021C0000-0x00000000021C6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | ddf126c327089a3ee587bc91641c0724 |
| SHA1 | 6e7ab9b2806133024647a293ab3d071e28687d5c |
| SHA256 | 57324cfb6fe945313417f1d4af1bf1f7ca72d2538583e712864c11ccab199360 |
| SHA512 | 27e1d4b00f0fb0fab36516800bab59334f2679aa2c7c79c6f90d2282821f79623183390b2190cfd25269a6bb7474c0429bc02a7507693f2a38f739993be36f9a |
memory/4524-25-0x0000000000690000-0x0000000000696000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewosik.exe
| MD5 | ec88b457000d8899b0a6ed26578f2c49 |
| SHA1 | 8ec598e86916b10851b6d94d497117ab4eb057c3 |
| SHA256 | 38195a8672e27443e3c738ae7170c6cdae3574512bc866a7dba028411e2c467d |
| SHA512 | 195c1fbe4bebbc1fabe50464f6515be8bfb7d17821439fb49c059aa538fd1bb9b43f36610592819446dd0a1466ab636e0437fc23e994a0df5d09bfc0252b991e |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-25 00:36
Reported
2024-05-25 00:39
Platform
win7-20240220-en
Max time kernel
122s
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\2024-05-25_5c038d66be8e4314413c745733883996_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\2024-05-25_5c038d66be8e4314413c745733883996_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 1120 wrote to memory of 2976 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 1120 wrote to memory of 2976 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 1120 wrote to memory of 2976 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 1120 wrote to memory of 2976 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_5c038d66be8e4314413c745733883996_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/1120-0-0x0000000000290000-0x0000000000296000-memory.dmp
memory/1120-8-0x0000000000290000-0x0000000000296000-memory.dmp
memory/1120-1-0x0000000000400000-0x0000000000406000-memory.dmp
\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | ddf126c327089a3ee587bc91641c0724 |
| SHA1 | 6e7ab9b2806133024647a293ab3d071e28687d5c |
| SHA256 | 57324cfb6fe945313417f1d4af1bf1f7ca72d2538583e712864c11ccab199360 |
| SHA512 | 27e1d4b00f0fb0fab36516800bab59334f2679aa2c7c79c6f90d2282821f79623183390b2190cfd25269a6bb7474c0429bc02a7507693f2a38f739993be36f9a |
memory/2976-16-0x0000000000350000-0x0000000000356000-memory.dmp