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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
18/02/2024, 22:55
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe
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Size
385KB
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MD5
87a9b1c588a7913b47ab6f1488cf7b31
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SHA1
b103677fea445e72e3c795a645b5d712d41a6ec8
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SHA256
679d214aee7de944f43295001eb37b9675acfa01b064d564c13f76ae69bb2caa
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SHA512
1e0b1d35fc193faedcdf6fc3f9c2b6dbc20cdf343d78ca509b56a0a8ddbccd2d1ed3376e642c4cd030ea9a6887c82cce04ac2fd31893c20aad7ff0bf056ca109
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SSDEEP
6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXO:nnOflT/ZFIjBz3xjTxynGUOUhXO
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x0009000000014a5b-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2320 hasfj.exe -
Loads dropped DLL 1 IoCs
pid Process 776 2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 776 wrote to memory of 2320 776 2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe 28 PID 776 wrote to memory of 2320 776 2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe 28 PID 776 wrote to memory of 2320 776 2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe 28 PID 776 wrote to memory of 2320 776 2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:776 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:2320
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
385KB
MD5e31897fc53e793b81fd76fb44cb1c12e
SHA1385f405f742ae5d58ddf2573c0736a7a780e8cfa
SHA25685ec168ee2d239b93c08491931023d5543c99b0bd47b06d59f9b814d9faccc2f
SHA512b639393ca0028671a751d96cb743c63e65c6fc8cbec3b966d880714f53cbe4d9c6d34f23fc2974ded6545a61d18bdcdb7de33fec7dd98a13bd74ab1c8477eeba