Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
06/06/2024, 21:35
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-06_cb5c53bb5534a37b6a427793956af3a9_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-06-06_cb5c53bb5534a37b6a427793956af3a9_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-06_cb5c53bb5534a37b6a427793956af3a9_cryptolocker.exe
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Size
46KB
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MD5
cb5c53bb5534a37b6a427793956af3a9
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SHA1
0cefddd957e5553ba60ce7a8860470b2ba047c08
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SHA256
c365d17190647945354022a0c1f0c5d40eb19b2cbaf6fef9ab0416a3bf970520
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SHA512
ddd9ece2f67b3785e0f481cfa9e40b1a70c43e45bbbbf481b4dd0fe6af8e5005708a2c26c71675398420f07c16bd93d3ef9c2613fdfd552e37613e7ba6356ca4
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SSDEEP
768:y6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpjbXOQ69zbjlAAX5e9zz:y6QFElP6n+gMQMOtEvwDpjbizbR9Xwzz
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000022f51-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-06-06_cb5c53bb5534a37b6a427793956af3a9_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3900 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 4432 wrote to memory of 3900 4432 2024-06-06_cb5c53bb5534a37b6a427793956af3a9_cryptolocker.exe 82 PID 4432 wrote to memory of 3900 4432 2024-06-06_cb5c53bb5534a37b6a427793956af3a9_cryptolocker.exe 82 PID 4432 wrote to memory of 3900 4432 2024-06-06_cb5c53bb5534a37b6a427793956af3a9_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-06_cb5c53bb5534a37b6a427793956af3a9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-06_cb5c53bb5534a37b6a427793956af3a9_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4432 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3900
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD5c527848bc9ff1d2176f283cd1af9ca39
SHA1c4467d8c4629874b4454b4fa402c2784be3e8af6
SHA25637dfb0d35c94f79a5f0a09cdec1296699e6aff56d9c48fa0df32cb623d675b1a
SHA5127857ed2d5f65828d32e07ec486a080fad84cd2d764f3f02e93898abe48819a09ca50c2010be918ee4e8d1c5b2ba5faa076ba2a7685485814dcee3ddf9fdf1f0c