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
02/06/2024, 04:47
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe
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Size
49KB
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MD5
d29f3177ae2b2e7d6b186d7c7ac8d06b
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SHA1
c58be2f92dd3de1aa14a446497f2c0d2d0c787b8
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SHA256
c4bd9d42ca929f3c732aaf18d26c55b381de1a4d08feb1dac35e97a1485d611e
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SHA512
3b09ed2123a7779c6857c2a917064e9c3b4c30bcd717e75fd46e0d65890524bf43a760a910460e682cbb2779efee049b186cfc2b04595373c5cae6e6be61a21c
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vdXfy:X6QFElP6n+gJBMOtEvwDpjBtEdXfy
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000500000002328f-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000500000002328f-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 732 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 4900 wrote to memory of 732 4900 2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe 83 PID 4900 wrote to memory of 732 4900 2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe 83 PID 4900 wrote to memory of 732 4900 2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4900 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:732
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
50KB
MD5a852dcd6d411822d80834909187d88cb
SHA1a6fbcb999b108757b2a81751260cad20e5629c53
SHA2569970d30c31fa2071f03f2304b5663673cd1751f9a8ae1a97f49b08e8c844d857
SHA51220df9a873d5693e764acbc633ecd2af19a4f762b7d0647d51e5e44cacb8e63d53b0be21002dbdbcba00bdf2759d05bdc572ab6651d066b6d2eccf460f70e7b1c