Analysis
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max time kernel
13s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
23/02/2024, 12:39
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe
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Size
32KB
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MD5
60bfe906d800bf4e1d36e16442812187
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SHA1
b8c87c956d92c4427a6b79e4b00b6e98fdf09432
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SHA256
98d4374754b3c2f1d6cd2c79f705f85f63935fb00c7a67bc4c289b638ed85feb
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SHA512
ed470e6fef381cee01d6bc5260f17099d59b2758359da4cb093d7af4d0bacfa26e2c4554e8f7641e4d749dd4120388e5489b50afa209b77db5de6f1ce63d43bb
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznUsDk2:b/yC4GyNM01GuQMNXw2PSjZR
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x0009000000012254-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 832 retln.exe -
Loads dropped DLL 1 IoCs
pid Process 548 2024-02-23_60bfe906d800bf4e1d36e16442812187_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 548 2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe 832 retln.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 548 wrote to memory of 832 548 2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe 28 PID 548 wrote to memory of 832 548 2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe 28 PID 548 wrote to memory of 832 548 2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe 28 PID 548 wrote to memory of 832 548 2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-23_60bfe906d800bf4e1d36e16442812187_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:548 -
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:832
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33KB
MD5e0671dc105ee61eced488bee1c94ba8e
SHA1465f8db788448669dfc029e9ecbedfea1f48dc57
SHA256b62698acab5cbb076c858f01c4247c26d630c79fea5c34dda92dfed4fae58643
SHA5129f06ab205dfd92c2bac1a801d9f278cb23cfa341510d839b08244285885f1472e97c74a54e040e1cbfb94b3d0a932485ac4da461c90c307bd7eca99ebd7af616