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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
04/02/2024, 03:48
Behavioral task
behavioral1
Sample
2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe
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Size
70KB
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MD5
9a0cee245b8474795eba8c0120f90c04
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SHA1
7c6d2a75014def416316e809283ab2b59c7d3e66
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SHA256
81e17f7d3c6d6916e6f74968917f9c1d20128cfc5feceeb9d0ef9da4d51a68a9
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SHA512
3b1766426a8f7aa12979bf0206656b2b5ff132d218846dc73bc74a39b704b60c3929cfbc6ef084b38559f7d9f5b0793eaacfb5b6e8c8d55ac4d6aff36161f451
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsal3H:1nK6a+qdOOtEvwDpj8H
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2288-1-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2288-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2288-13-0x0000000001EF0000-0x0000000001F00000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2032-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a00000001224a-16.dat CryptoLocker_rule2 behavioral1/memory/2032-27-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/2288-1-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2288-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2288-13-0x0000000001EF0000-0x0000000001F00000-memory.dmp CryptoLocker_set1 behavioral1/memory/2032-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a00000001224a-16.dat CryptoLocker_set1 behavioral1/memory/2032-27-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/2288-1-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2288-15-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2288-13-0x0000000001EF0000-0x0000000001F00000-memory.dmp UPX behavioral1/memory/2032-17-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x000a00000001224a-16.dat UPX behavioral1/memory/2032-27-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2032 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2288 2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe -
resource yara_rule behavioral1/memory/2288-1-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2288-15-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2032-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x000a00000001224a-16.dat upx behavioral1/memory/2032-27-0x0000000000500000-0x000000000050F311-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 WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2288 wrote to memory of 2032 2288 2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe 28 PID 2288 wrote to memory of 2032 2288 2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe 28 PID 2288 wrote to memory of 2032 2288 2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe 28 PID 2288 wrote to memory of 2032 2288 2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2288 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2032
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
70KB
MD56e9dde7e4c30f29927bea79745a1c369
SHA115ef2ad93442110d811a19cf701a8f1db39db32c
SHA25602cc33289f45abefcf7c920826e9c5278933433fb6af2eb53f628005600fcbb3
SHA5126c9cd3b55c42f8fa9e750b648a511b8167057c59d11b79fa1d366de92cf559ece9e8d8f028de16fedf92d23d3a5fc3efa68e45f9497b57440025749b7bdb3776