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Analysis
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max time kernel
122s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
11/05/2024, 14:11
Behavioral task
behavioral1
Sample
2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe
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Size
55KB
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MD5
d3264329e9bb0a21b4b8dbbb43402578
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SHA1
5e7d41c10e4b5c56ce632e988a25a8c42e75701b
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SHA256
d10b5e45b45f43ccdc91bb7d53637402ca98e934eb294898e2241a2f40fea1f7
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SHA512
69a7e0524e66929fab9266c4cb11baaa4fc754169b3e73191dcac6af9148272fe27d87c0ed5a44e0b79baf4c3fce53a6c61be1464b592a5ecf30b7ad2813f093
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SSDEEP
768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjl+:bP9g/xtCS3Dxx0p
Malware Config
Signatures
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Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral1/memory/2856-0-0x0000000000400000-0x000000000040E000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b0000000144e8-11.dat CryptoLocker_rule2 behavioral1/memory/2548-16-0x0000000000400000-0x000000000040E000-memory.dmp CryptoLocker_rule2 -
UPX dump on OEP (original entry point) 3 IoCs
resource yara_rule behavioral1/memory/2856-0-0x0000000000400000-0x000000000040E000-memory.dmp UPX behavioral1/files/0x000b0000000144e8-11.dat UPX behavioral1/memory/2548-16-0x0000000000400000-0x000000000040E000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2548 gewos.exe -
Loads dropped DLL 1 IoCs
pid Process 2856 2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe -
resource yara_rule behavioral1/memory/2856-0-0x0000000000400000-0x000000000040E000-memory.dmp upx behavioral1/files/0x000b0000000144e8-11.dat upx behavioral1/memory/2548-16-0x0000000000400000-0x000000000040E000-memory.dmp upx -
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 2856 2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe 2548 gewos.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2856 wrote to memory of 2548 2856 2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe 28 PID 2856 wrote to memory of 2548 2856 2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe 28 PID 2856 wrote to memory of 2548 2856 2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe 28 PID 2856 wrote to memory of 2548 2856 2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-11_d3264329e9bb0a21b4b8dbbb43402578_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2856 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2548
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
56KB
MD5e34a2d579e6ee9c2fc237c7ff46265d0
SHA1bc2ce943a456072b82fba6037de4315c76902d3b
SHA256926085384ec421b6d85ca3a4d52aa3f014a2ad114a926d16921166578f96bbe3
SHA51207b21e898ce6d2d6819308f71b42ae8596bfd0d6bd8b6a19a2c715de3653df6ba7e12c6c3a9541dfc034701561e15adac5e76a1a81b1b146ff2213955f5e936b