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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
15/04/2024, 10:17
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe
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Size
63KB
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MD5
dcc5a3ed41b5b7a9b1c865e8d08d3355
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SHA1
adf735561923fb3abc30f5b8531ed16a48b56a73
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SHA256
82f8610672240cd354fea695bac11e3099945f84b78339764c0959b92a3c519a
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SHA512
d61c8a3844ee5bb68360d192e62c48a02e943292849e9959f3e6eceaae80e9c036b34b411d85f65ac078ba52151ca0614277a29adad3cf30a5bc530c6b9943da
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF2998:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7k
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x0009000000012248-10.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x0009000000012248-10.dat CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
pid Process 3020 hurok.exe -
Loads dropped DLL 1 IoCs
pid Process 1776 2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 1776 2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe 3020 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1776 wrote to memory of 3020 1776 2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe 28 PID 1776 wrote to memory of 3020 1776 2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe 28 PID 1776 wrote to memory of 3020 1776 2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe 28 PID 1776 wrote to memory of 3020 1776 2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-15_dcc5a3ed41b5b7a9b1c865e8d08d3355_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1776 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:3020
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
64KB
MD5e3579dc5408d7288d38514b4c8b100de
SHA1669bd149f7a6cced8bb48a8cf206240e03e9e9b0
SHA256a8a9dcd99c2ebbe04103a11476a8e6db99ee201ad4759c901d9d9d60c79250be
SHA512f6759914957cbb3e44548aa072c718c4757ef6e566a7165f8ec1d148ea20aa1867d11c438b9d7da417fd360013d02d24e48aabd0b40c30d4a81b1f1287db4340