Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
12-02-2024 17:39
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exe
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Size
51KB
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MD5
717f4db2275768042bf9974dcf041612
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SHA1
ad992b89c306e4520dcf33bf9b64af6c68bfa27c
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SHA256
e3acd8754fd0b689e6ae0a1c218fc65681a08d6bd281996f9f5f03ed1ca861ed
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SHA512
4b08fc0d94ae5247f763c302ffaf18b87fbc1b9e2cf9deda14228133231363af970dcad2623432df430dfdd08e74f8932e6788c105eb0f928b56a239500a5d55
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojaklx:V6a+pOtEvwDpjS
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:
2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation 2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 2536 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:
2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exedescription pid process target process PID 1968 wrote to memory of 2536 1968 2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exe asih.exe PID 1968 wrote to memory of 2536 1968 2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exe asih.exe PID 1968 wrote to memory of 2536 1968 2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exe asih.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_717f4db2275768042bf9974dcf041612_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1968 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2536
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
52KB
MD5785373c6e17c7289d22accc2d28fbf7f
SHA1f7e5977daae3611a70d9c3875e2fd774783dbda1
SHA25648acf5d66bea20157b517452a1aa3de858d1ab450d3fcabb1c7d5c9c44650fb8
SHA5123c4e612d5d4f6e33db9db23b39afdfa2036b51da28c877bb7e6b905bce52d2b3ab8faa7c4372b17c015a1a51787c6c56e353436afb3268302ed07cac4c48df13