Analysis
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max time kernel
148s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
12/06/2024, 18:42
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-12_b6b23973a6c384054e42e3d3eb6ab651_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-12_b6b23973a6c384054e42e3d3eb6ab651_cryptolocker.exe
Resource
win10v2004-20240611-en
General
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Target
2024-06-12_b6b23973a6c384054e42e3d3eb6ab651_cryptolocker.exe
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Size
75KB
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MD5
b6b23973a6c384054e42e3d3eb6ab651
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SHA1
5b06b1a6e570892d3503c5782ad86f2d3666129b
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SHA256
283a329004a5a20f34ba0370a84245fade9191d3037cb43f2a333911ea28f652
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SHA512
78cc899a07f54c47ce461384dee5582df7808b745dd4201ac5d4ca770ed07d008063017a0ff7b20c8576efac6b872b59ee99e611776b50f2952f54df04cac78c
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SSDEEP
768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMsi:u6QFElP6n+gWMOtEvwDpjJGYQbi
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0006000000022f3f-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0006000000022f3f-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-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation 2024-06-12_b6b23973a6c384054e42e3d3eb6ab651_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1560 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 2944 wrote to memory of 1560 2944 2024-06-12_b6b23973a6c384054e42e3d3eb6ab651_cryptolocker.exe 81 PID 2944 wrote to memory of 1560 2944 2024-06-12_b6b23973a6c384054e42e3d3eb6ab651_cryptolocker.exe 81 PID 2944 wrote to memory of 1560 2944 2024-06-12_b6b23973a6c384054e42e3d3eb6ab651_cryptolocker.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-12_b6b23973a6c384054e42e3d3eb6ab651_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-12_b6b23973a6c384054e42e3d3eb6ab651_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2944 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1560
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
75KB
MD5549a8d687b375a4a6886d65780375713
SHA121c556a1aeff89764e91dcad2f331910444c4031
SHA256862dc6c6cbc5a8e8db068477b4b4f66597c646689338d61fb234a9d192804583
SHA5126457545e49e33a5d2baec85ef39ffb7afe693c50a8450d6e2c0ea4fa2ee6249717534ef2c2ca67b015ec371547be6b24717598e5511504dc70559100963297df