Analysis Overview
SHA256
fe6351bc6062a3c49f8d60e420d69118362ad1d1992d8d921abd64af36d9b2ee
Threat Level: Known bad
The file 2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker was found to be: Known bad.
Malicious Activity Summary
Detection of CryptoLocker Variants
Detection of CryptoLocker Variants
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
Modifies system certificate store
Suspicious use of UnmapMainImage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-06 20:34
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
2024-06-06 20:34
Reported
2024-06-06 20:36
Platform
win7-20231129-en
Max time kernel
117s
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\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe | N/A |
Enumerates physical storage devices
Modifies system certificate store
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
| Set value (data) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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 | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
| Set value (data) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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 | C:\Users\Admin\AppData\Local\Temp\gewos.exe | N/A |
Suspicious use of UnmapMainImage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_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 2648 wrote to memory of 2384 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2648 wrote to memory of 2384 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2648 wrote to memory of 2384 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2648 wrote to memory of 2384 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_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 |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
Files
memory/2648-8-0x0000000000490000-0x0000000000496000-memory.dmp
memory/2648-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2648-0-0x0000000000490000-0x0000000000496000-memory.dmp
\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | eca8f38e31cfb028091d12899b09780f |
| SHA1 | de04a0efe4051c9accb6d1561d26c1525c5afe0b |
| SHA256 | 6295503c8f52743b327e61dbaa47e32203267f619093502df637353b6310d996 |
| SHA512 | 603417155b65b1ded51b6270c6afaee0278fd1ae696c6b493d81dbbb39190085e96807357b7849055e7b1bac0d07310fca45c5d5919015c82f0f1f4cee79f973 |
memory/2384-23-0x00000000003E0000-0x00000000003E6000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
| MD5 | 49aebf8cbd62d92ac215b2923fb1b9f5 |
| SHA1 | 1723be06719828dda65ad804298d0431f6aff976 |
| SHA256 | b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f |
| SHA512 | bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-06 20:34
Reported
2024-06-06 20:36
Platform
win10v2004-20240508-en
Max time kernel
149s
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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\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 820 wrote to memory of 2572 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 820 wrote to memory of 2572 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 820 wrote to memory of 2572 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-06_926baeaa3db5decb93c1bc7e7b538199_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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | nasap.net | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | 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 | 226.20.18.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.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 |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| BE | 88.221.83.208:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 208.83.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.173.189.20.in-addr.arpa | udp |
Files
memory/820-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/820-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/820-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | eca8f38e31cfb028091d12899b09780f |
| SHA1 | de04a0efe4051c9accb6d1561d26c1525c5afe0b |
| SHA256 | 6295503c8f52743b327e61dbaa47e32203267f619093502df637353b6310d996 |
| SHA512 | 603417155b65b1ded51b6270c6afaee0278fd1ae696c6b493d81dbbb39190085e96807357b7849055e7b1bac0d07310fca45c5d5919015c82f0f1f4cee79f973 |
memory/2572-25-0x00000000020A0000-0x00000000020A6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewosik.exe
| MD5 | facf155abd9ca1953f2f76e7437538e1 |
| SHA1 | 734a6922907770a1af2dd8f6cadc0e3672c530f0 |
| SHA256 | 963c3f0e856c4b9beb889b55ae926042c0f2585f408451076d657e9d618a5404 |
| SHA512 | c3b58c68dc73b5cd3b8e72ead477fbb1eca37502d0ab5b7782b51eaf7d5a43fd08e9706220316a06a5e5bd46fdf76acd95f3b860e0324f8f1336f9cd40b85207 |