Analysis
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max time kernel
13s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
22/02/2024, 21:24
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe
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Size
31KB
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MD5
10c24dcc69a62127ce58d390091a317e
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SHA1
77999bdef98ad0131c88956dd0d11463f45dd8ee
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SHA256
1306752b59ffdb15f4a3cd61c54cbc400d71207cee150dd67dd45e90987a7932
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SHA512
c0cab91d3c5a7d6a821ac06af3c22368581e55ef590262666435af17b56d8c27a2b1d48dadb9246d5d83a2f7c6519eb395b4ea5254f3fb1f9aa6f2f1d5051d60
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznUssoYY:b/yC4GyNM01GuQMNXw2PSjWoYY
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x0009000000012251-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2512 retln.exe -
Loads dropped DLL 1 IoCs
pid Process 2208 2024-02-22_10c24dcc69a62127ce58d390091a317e_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 2208 2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe 2512 retln.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2208 wrote to memory of 2512 2208 2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe 28 PID 2208 wrote to memory of 2512 2208 2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe 28 PID 2208 wrote to memory of 2512 2208 2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe 28 PID 2208 wrote to memory of 2512 2208 2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-22_10c24dcc69a62127ce58d390091a317e_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2208 -
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:2512
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
32KB
MD5fff9f5ba0cdf87e537132c073d69645b
SHA166f598aa7ea5dd52ce8420f623b2985189d8af87
SHA2562e03dea3d573a5f5cac3a14eca74a1e5bd63b6627d6753db78247318321bc7d4
SHA5125bb1962fd700933871b9d0fad1d19744b395b8c2b7cb68b007da7c776d41cf84b0ff43203f3df4e8a796e3494057d56594028ab051c8ed3c241315ddb99716c1