Analysis
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max time kernel
147s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
13-06-2024 12:33
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exe
Resource
win10v2004-20240611-en
General
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Target
2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exe
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Size
49KB
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MD5
3daccc27768288bbd1b898b683735b3c
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SHA1
b7e7235022e66f7127e65f345704cda63eab91d5
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SHA256
04a66ede7d31fe8a9160d572e73c7eab423e0e213bc679c5a0c41e378664068d
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SHA512
159afc54188a2fa9da6597d8159e706760cdf3d6374477de623ffff4062c6a813d934f1c887705b71479da3de79c57628a22240a65842563bfc5847b34cdbf27
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556Blvp:X6QFElP6n+gJQMOtEvwDpjB0GIWSlvp
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation 2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 4272 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exedescription pid process target process PID 3260 wrote to memory of 4272 3260 2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exe asih.exe PID 3260 wrote to memory of 4272 3260 2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exe asih.exe PID 3260 wrote to memory of 4272 3260 2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exe asih.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_3daccc27768288bbd1b898b683735b3c_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3260 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4272
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
49KB
MD58980246213746517a338e4ff92176842
SHA14f03c5d500b9ef20f8846c857e108a29b39a8b13
SHA256276d7e90f3d270b5934c5cc07d20814b96b1112799529e02e056701892a5db28
SHA51286f52a248f2cb52e948910359b80b8f8852dba64c0ed9353177bfcd7a8a1de3188203365de7821b517254cf8727b8d6387c93fccf12a979a72f533aec682b7b3