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Analysis
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max time kernel
144s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
28/04/2024, 03:55
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe
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Size
42KB
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MD5
edfa89c3010ca09184be57f88d0d51da
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SHA1
a7a33e23d9995af22518a388e4ba9bc8f29961a6
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SHA256
b2ad355f0f731a1bd2a879229d1d26c03692e8b8b9a9e4b1bd15489c03f20265
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SHA512
b682020cb3a085d80c761939cb01d990393fc9903fa25bcb2aa9a1bcb5922557a5770eb8820ebc917836faa29dbf9e410c0696c9d64f5586b197c1910d60d89a
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SSDEEP
768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAHa:bCDOw9aMDooc+vA6
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1516-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000012271-11.dat CryptoLocker_rule2 behavioral1/memory/1516-15-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2164-16-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2164-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2164 lossy.exe -
Loads dropped DLL 1 IoCs
pid Process 1516 2024-04-28_edfa89c3010ca09184be57f88d0d51da_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 1516 wrote to memory of 2164 1516 2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe 28 PID 1516 wrote to memory of 2164 1516 2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe 28 PID 1516 wrote to memory of 2164 1516 2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe 28 PID 1516 wrote to memory of 2164 1516 2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-28_edfa89c3010ca09184be57f88d0d51da_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1516 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:2164
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
42KB
MD5286f6a65fccd38702720ecb0038ea24b
SHA1f7b1c427dec12c3048d4089b2dcfccc8cbf418c3
SHA2564f73430677554526067287d473a58535cee9ec435ad4892851890bd4eb75b561
SHA5121db07e1af932cd1cdee72879b8e3f2e5a786a74344aa3bdd66aed7e1e98c1f5ef6db2bde5b432d054bf9e4c25fae86914148408f67d8ae6111ff1102b6fabe96