Analysis
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max time kernel
149s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
25-02-2024 02:24
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe
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Size
51KB
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MD5
073cbff64b3190425e6d6884785545fd
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SHA1
524959a90d1a30bc09921a649da92ca0217e55fc
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SHA256
f67bfcef6a8b4f4fdebdabbb4d344b651320ecf96e9beadf9d8765326740703c
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SHA512
c3afc7d21526f8321889c0ec08acc3f224f5467b061c5ee74d7cd60ff13cd49358ced00aabda6637369757cded00c4695cf281c6d9a58611a62230b247f43b71
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojaklC:V6a+pOtEvwDpjp
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00040000000006e1-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x00040000000006e1-12.dat 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-1-5-21-2200714112-3788720386-2559682836-1000\Control Panel\International\Geo\Nation 2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1224 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 4588 wrote to memory of 1224 4588 2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe 90 PID 4588 wrote to memory of 1224 4588 2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe 90 PID 4588 wrote to memory of 1224 4588 2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4588 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1224
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
51KB
MD5483eda6671e874aa44b1b945e7f8d3c9
SHA10b8735de69fef60f94f2cf88bebc27c3007b9645
SHA256d5f86f67f0dbb3df31bbd390fd6203e1a4598df3e21d542b2e34a12075cf1d3f
SHA512f5da5388e2109cc39b287d748c02dab0d889e15edcb4d71b72c74bf35bc12200487f5ab2b1969ad913731ac371b8eec5dc4df150ff02dcbf0d54a2b6744d0975