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Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
13/03/2024, 17:28
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-13_29fd85812752fc3a840e0034aaf74a7b_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-03-13_29fd85812752fc3a840e0034aaf74a7b_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-13_29fd85812752fc3a840e0034aaf74a7b_cryptolocker.exe
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Size
104KB
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MD5
29fd85812752fc3a840e0034aaf74a7b
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SHA1
a6a025e3a04729c67c66718ecd6e2482eec9ca91
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SHA256
14bc665e0494a2b1f786974ad0c9641c7c093a792a7539dc2cb91079b87228f9
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SHA512
20ff2330387e4257b28941619aa8870483695e75ec907e22745d19487de543a02c59a4a90530ca2114465cbfcd1ea79f2399bc20dacecd3ed4540a3c799e14a8
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpQbCJhHg:V6a+pOtEvwDpjtzJ
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000f00000002314a-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000f00000002314a-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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation 2024-03-13_29fd85812752fc3a840e0034aaf74a7b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2908 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 1304 wrote to memory of 2908 1304 2024-03-13_29fd85812752fc3a840e0034aaf74a7b_cryptolocker.exe 87 PID 1304 wrote to memory of 2908 1304 2024-03-13_29fd85812752fc3a840e0034aaf74a7b_cryptolocker.exe 87 PID 1304 wrote to memory of 2908 1304 2024-03-13_29fd85812752fc3a840e0034aaf74a7b_cryptolocker.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-13_29fd85812752fc3a840e0034aaf74a7b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-13_29fd85812752fc3a840e0034aaf74a7b_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1304 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2908
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
105KB
MD5c2a843cf933fdf0694d6637f4aae6391
SHA1a88284554769ade76ec93065ecd5d49691c575bd
SHA256d39c274e7d754a0253c327827f7c8f70e4e455970021182c3a4c0363c6ceea75
SHA5129d2f674fd4711fd760c3c45a8c511cba33a629090ada70aaf1d070fa07aa152c8946d17e91b8554393c57fc285ee092c49c2a6d4168dc1c8189dac2e39275b70