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Analysis
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max time kernel
0s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
09/01/2024, 06:40
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_cryptolocker.exe
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Size
36KB
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MD5
4dbfb24ec6b9576ca1e5668e4c0619fe
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SHA1
7b8389f21d821e184736e5e8d43ad1d0b846c30f
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SHA256
61c573f2cdcf8e5a2734408407559746774d5950e2ef874a38ba022d65d67bf5
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SHA512
e7af818e7b87f56eed3cf0a3b73d08211e2554cf2b52fd0d415befb029ecac3c6d452b4a6817d1c71ed48234654cda471d9a7b2cbfc85f13dcc8eb1c44271988
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlb:b/yC4GyNM01GuQMNXw2PSjHPbSuYlb
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2712 retln.exe -
Loads dropped DLL 1 IoCs
pid Process 2136 2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_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 2136 2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_cryptolocker.exe 2712 retln.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2136 wrote to memory of 2712 2136 2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_cryptolocker.exe 21 PID 2136 wrote to memory of 2712 2136 2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_cryptolocker.exe 21 PID 2136 wrote to memory of 2712 2136 2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_cryptolocker.exe 21 PID 2136 wrote to memory of 2712 2136 2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_cryptolocker.exe 21
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-08_4dbfb24ec6b9576ca1e5668e4c0619fe_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2136 -
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:2712
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
37KB
MD5a9262767a896c23340eac4d13216199c
SHA1d11fa381dc0453297bbaf5ac215b88817fb18c3b
SHA2568fee13b1d2f9b7164509c3506df9cf55b50d3879dd1f01d9baefef882092eb33
SHA51235af3b7c138d041a5108c620a3b832e7cf6525d08c9edef337662c0a8dc796b49e7f24478e4abab7f343b33a6df50511e9100945807dab7a4d4d427b479a1454