Analysis
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max time kernel
148s -
max time network
152s -
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 05:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_24e3101e198f61edc4622908ef23715c_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_24e3101e198f61edc4622908ef23715c_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-12_24e3101e198f61edc4622908ef23715c_cryptolocker.exe
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Size
44KB
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MD5
24e3101e198f61edc4622908ef23715c
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SHA1
2e84596bcbaafb0ac0ce144ec115cb0783b1b37c
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SHA256
975f183d250f207e1d7cbded8e376e965aaadde3374a829d946cbaa37d83e896
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SHA512
6b46781b95593bc307a6466bff9ab1f2705dd4ddeb633f04463f24ad3f088191afe9cf50f8bd46ce63ef81bbe1e87ee0b8597457ed2e2034a2f5a8469869e601
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SSDEEP
768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+My3:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+j
Malware Config
Signatures
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Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/4492-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000022d84-13.dat CryptoLocker_rule2 behavioral2/memory/4492-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral2/memory/4492-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000a000000022d84-13.dat CryptoLocker_set1 behavioral2/memory/4492-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation 2024-02-12_24e3101e198f61edc4622908ef23715c_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3688 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
description pid Process procid_target PID 4492 wrote to memory of 3688 4492 2024-02-12_24e3101e198f61edc4622908ef23715c_cryptolocker.exe 85 PID 4492 wrote to memory of 3688 4492 2024-02-12_24e3101e198f61edc4622908ef23715c_cryptolocker.exe 85 PID 4492 wrote to memory of 3688 4492 2024-02-12_24e3101e198f61edc4622908ef23715c_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_24e3101e198f61edc4622908ef23715c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_24e3101e198f61edc4622908ef23715c_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4492 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3688
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
44KB
MD57cbd0fca0663d158c88a0585853c4320
SHA10719e1feec7da31029b9bccbea145a8008602622
SHA256f3c28803e002627f3cc2fb2f8efa9450b0ace2f4244371c00c0d889680d29e8c
SHA512674c918033fb57f91bf19085c7681b5809b111339f80b172cacc8dbb3f9d0a8a3add47e22928c7727c1cdcf17c4a3caf5cce7f06c98ad485fa8b5534d952c130