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Analysis
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max time kernel
13s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
30/04/2024, 17:28
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe
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Size
34KB
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MD5
9e8c9c15840dba312d3ce09bb9de9936
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SHA1
5f59d645be5f9c64aa84d8a22c5f18d80e4e75ab
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SHA256
157c9fcf0777cc4e60bd212bb999515ccb0aa916f78aa744543459513c4bad97
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SHA512
703e2d1c20df435fde1e188775e4c64de8c495e0e95196ff523c3d22049f0be80d001eb1541c456ed7f7c91d444218ca1ca45be842c9c3808d33203339c2e569
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6A0MFNeGQn:b/yC4GyNM01GuQMNXw2PSjH+VGQn
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000c000000012279-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2056 retln.exe -
Loads dropped DLL 1 IoCs
pid Process 992 2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe -
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
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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 992 2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe 2056 retln.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 992 wrote to memory of 2056 992 2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe 28 PID 992 wrote to memory of 2056 992 2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe 28 PID 992 wrote to memory of 2056 992 2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe 28 PID 992 wrote to memory of 2056 992 2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-30_9e8c9c15840dba312d3ce09bb9de9936_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:992 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2056
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
34KB
MD52e3120757ae33f0dbe43e5cbd7436abb
SHA155d786adab6fac61c5048cbe13d26902f1752d4c
SHA25689237efa7c5a3f25a1b5422e579ec14fdd307b2858589f513f00cf6b6f69fe09
SHA5120b00754c38d3bc79ebe2aee9f0db0d70ad17f07ad4a617f980d80ed264ce3f62080844419c970862f53e411edd697a0a2dadc1cbf4787ddda1c9f806d87a352e