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Analysis
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max time kernel
142s -
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
17/02/2024, 07:59
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe
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Size
59KB
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MD5
f646033e48e8e830b55e8183f5d51208
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SHA1
a643679e78dd1a444f256210a203f4d3e8b71719
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SHA256
01c5a555c72a60eca9d5a9e9f4e70c155850b8a070e644bb03287e2eb4247527
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SHA512
7924e7b333333cb74f54c6f368e1df3f0765e55e8cd6288c6d6df767abdf1aa0248ca4f6505ea2c8dc7f1344e5b9c228732248bd4eed27b7ff4d46584dbbfffa
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SSDEEP
1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMd3:TCjsIOtEvwDpj5HE/OUHnSM2
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3252-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000600000002321d-13.dat CryptoLocker_rule2 behavioral2/memory/3252-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4224-26-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/3252-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000600000002321d-13.dat CryptoLocker_set1 behavioral2/memory/3252-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/4224-26-0x0000000000500000-0x000000000050E000-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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation 2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4224 misid.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 3252 wrote to memory of 4224 3252 2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe 84 PID 3252 wrote to memory of 4224 3252 2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe 84 PID 3252 wrote to memory of 4224 3252 2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-17_f646033e48e8e830b55e8183f5d51208_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3252 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:4224
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
59KB
MD5a25052a3f36655b0e7c3b1ca7af87476
SHA15a24661937f13aff112dccb8588c4167c72e3fb1
SHA2561a5f7ed6780954d7591c08ea9862ea3b7db6c4ae22428581be59175d3fde2f44
SHA51257e4bfc51bb57920dfd0d515edc75a2418d40d9ee510e2c154a8662a0abdf6ab447897d6ec9b85488a1d3906681eb95972ef2c536bdd0b0c71e1dd202072d582