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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
02/05/2024, 03:44
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe
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Size
52KB
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MD5
b6ad49e2c1c1cb80ed72905cb3a74381
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SHA1
3796e6a49b8a770f154714f0ca4a061933b481ad
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SHA256
f5ea53e4154e0c715d90307c4b320d6f06d97da2d491fc53d57d7c1b706b509f
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SHA512
f8db3d70c018130e9df90ae3d43958536f1323a3394b7fdb23ffab5a029943023d7cea51a02f8585386696611f98d276fc5d33de325985d830a2db5808ec8000
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjyaLccCGXliH:V6a+pOtEvwDpjvDG
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000d000000023b92-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000d000000023b92-12.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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation 2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4032 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 440 wrote to memory of 4032 440 2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe 83 PID 440 wrote to memory of 4032 440 2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe 83 PID 440 wrote to memory of 4032 440 2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-02_b6ad49e2c1c1cb80ed72905cb3a74381_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:440 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4032
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
52KB
MD50a03bf31fb9b8cf2a61750fc1b0dff5f
SHA1df884fbab7f50c31e962fe7a413145be4569de4b
SHA2563bdbf5ff1d39c207e4391ce8585d677ebc5907d2a93691e5ad3e22de47086ad5
SHA512372404703b52055711c79b45a7a4a724baf18da51db320c54692ca888e3a448cf5574ba4f6728cc45aac5deb23363825b3661ddaae724956c6d5c4a8e163c52f