Analysis Overview
SHA256
c80ba4a8406d750232bd85229560fbef49e268296fec07e3372874bced583c44
Threat Level: Known bad
The file 2024-06-13_8b52fc63a91b2706ef173bec94a300dc_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
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 03:41
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
2024-06-13 03:41
Reported
2024-06-13 03:44
Platform
win7-20240221-en
Max time kernel
118s
Max time network
118s
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\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_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\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_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 2172 wrote to memory of 3064 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2172 wrote to memory of 3064 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2172 wrote to memory of 3064 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 2172 wrote to memory of 3064 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_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/2172-0-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/2172-8-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/2172-1-0x0000000000400000-0x0000000000406000-memory.dmp
\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | 277161b1bc81a136d27dd038387fad9c |
| SHA1 | 25378456a9d44e1602365f472808eb5761a3054e |
| SHA256 | fd873c9203add8f8143a9ee66e471f452281c1c02af9890871127a9448293414 |
| SHA512 | be191a236f22fbb03a7ca1a305e225b70372390599bc4ba84721dd70c86c11bb9312b7548eafc8a9529f1268c6ac59e0278687adc04bfa1809879fe1df9808dc |
memory/3064-23-0x00000000002A0000-0x00000000002A6000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-13 03:41
Reported
2024-06-13 03:44
Platform
win10v2004-20240226-en
Max time kernel
141s
Max time network
152s
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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_cryptolocker.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\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 3040 wrote to memory of 4320 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 3040 wrote to memory of 4320 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
| PID 3040 wrote to memory of 4320 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_cryptolocker.exe | C:\Users\Admin\AppData\Local\Temp\gewos.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_8b52fc63a91b2706ef173bec94a300dc_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 --mojo-platform-channel-handle=1324 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.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 | 71.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| 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 |
| GB | 142.250.187.202:443 | tcp | |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 63.141.182.52.in-addr.arpa | udp |
Files
memory/3040-0-0x0000000000640000-0x0000000000646000-memory.dmp
memory/3040-1-0x0000000000640000-0x0000000000646000-memory.dmp
memory/3040-2-0x0000000000400000-0x0000000000406000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewos.exe
| MD5 | 277161b1bc81a136d27dd038387fad9c |
| SHA1 | 25378456a9d44e1602365f472808eb5761a3054e |
| SHA256 | fd873c9203add8f8143a9ee66e471f452281c1c02af9890871127a9448293414 |
| SHA512 | be191a236f22fbb03a7ca1a305e225b70372390599bc4ba84721dd70c86c11bb9312b7548eafc8a9529f1268c6ac59e0278687adc04bfa1809879fe1df9808dc |
memory/4320-26-0x0000000002110000-0x0000000002116000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gewosik.exe
| MD5 | 8984e38e8f2fc8faf177a7fa18c015ca |
| SHA1 | 451b7af27109fbf399b0a3495ee0816d09882bd8 |
| SHA256 | 98bc65153cd3206c020705d87fd7ca8f0e3388f420ee41f285918369944d0238 |
| SHA512 | f8079c2cbed47efcda3d8828d06a1f85df6efb480c98419377bac0483ad755e46fe5a2e7dff7da9d9eb5d22e16f4bb1c2f65eaf475f55103750e8d946796f030 |