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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
20/02/2024, 01:26
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe
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Size
30KB
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MD5
1f70d10feb59a8aa2412c852bdc3deea
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SHA1
e63d0494f6b086aac1623af56794e7b8daa1098f
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SHA256
145633926f053d37dc5d7d555d444d310e10cbf298f589457a2bcca5eb196860
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SHA512
b54cd3b4fce2b88fddc5a40bfe0d06ef123479588b84593db0a73e1380097ca77df545f425daf9c03af0d27ad9e8e2a9756b96ab2af8dc3bd1977f0cf6e8d1c9
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SSDEEP
384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9RXmo:b7o/2n1TCraU6GD1a4Xt9Rt
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000d000000012251-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2672 rewok.exe -
Loads dropped DLL 1 IoCs
pid Process 2324 2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 2324 2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe 2672 rewok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2324 wrote to memory of 2672 2324 2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe 28 PID 2324 wrote to memory of 2672 2324 2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe 28 PID 2324 wrote to memory of 2672 2324 2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe 28 PID 2324 wrote to memory of 2672 2324 2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-20_1f70d10feb59a8aa2412c852bdc3deea_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2324 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2672
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
31KB
MD5dad86d97a4aeb071d22236697db36c05
SHA14f618dc4b8a609918d2f7bb320d94ae49aa6183f
SHA25600c02b2f8cb57678c511a7266514db0b42a85e84df47d1634b1ac7f6120b2bea
SHA51203dde01a72f640d1f31557c6600e18c3be0bda35f1b5cfcc2b4d0a334d401009f643954e58d3ac30b73bdd934091ca967a2b42fdfd948d4fb957d480d1008a00