Analysis
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max time kernel
150s -
max time network
147s -
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, 23:09
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-02_5b05b179fbc39ae636e3186687ebc46d_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-02_5b05b179fbc39ae636e3186687ebc46d_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-02_5b05b179fbc39ae636e3186687ebc46d_cryptolocker.exe
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Size
44KB
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MD5
5b05b179fbc39ae636e3186687ebc46d
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SHA1
77d2d14472fac330abefb13d28a424cd8527fa6e
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SHA256
da2292a4414b522ea769a560959d23130b04ffc22e50f8a4f2ad2d766260654f
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SHA512
780e269f8f945c2a38c1265520be072b90b6100d7415d0282f2c512448e6fd537fbf2c5af5efc0fc6088c8ef91ce073fc42a71de8bcabcda9ee885a9d73cd010
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SSDEEP
384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUadQC8i:bm74zYcgT/EkM0ryfjPdQZi
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/1416-0-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000002328e-13.dat CryptoLocker_rule2 behavioral2/memory/116-17-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1416-18-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/memory/116-26-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 -
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_5b05b179fbc39ae636e3186687ebc46d_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 116 hasfj.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 1416 wrote to memory of 116 1416 2024-06-02_5b05b179fbc39ae636e3186687ebc46d_cryptolocker.exe 83 PID 1416 wrote to memory of 116 1416 2024-06-02_5b05b179fbc39ae636e3186687ebc46d_cryptolocker.exe 83 PID 1416 wrote to memory of 116 1416 2024-06-02_5b05b179fbc39ae636e3186687ebc46d_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_5b05b179fbc39ae636e3186687ebc46d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_5b05b179fbc39ae636e3186687ebc46d_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1416 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:116
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD5e786e06e46b552c28aef133d754dab01
SHA1cd6892debbc8c19ca82687b08dcc977741c83cd7
SHA25668b66e8a4b89b8c9c2f3d1e0bc24134e1776280f61a50a3ec759bf01968cc75e
SHA5127e0c0f0c53c46d202baa7c9608f837cd687a2f3b2e9ee9bf23de15bf6a84e54b40e3d7c5e5e7d4c95f775ae71c8a4874ecde9e820d63f9bcc7a6630020636095