Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
11/03/2024, 00:00
Behavioral task
behavioral1
Sample
2024-03-10_f2d72709ace821ceaf6cd54133c59a6d_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-10_f2d72709ace821ceaf6cd54133c59a6d_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-10_f2d72709ace821ceaf6cd54133c59a6d_cryptolocker.exe
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Size
92KB
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MD5
f2d72709ace821ceaf6cd54133c59a6d
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SHA1
2255d428ab6f67be8737f192d71c593bc428f108
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SHA256
8f9f63dbe017b563e7e0f37906c6f79bdec98212755ad9531ad15d90a2a5408d
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SHA512
3a29c5787e39ce6278a49ef311b3912899dc47c900ff6c1bffcde07f3264888860f70b890572ee0dbacf17e7e79802483be0314467f3bfe941b4c8d039230582
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0oL0:AnBdOOtEvwDpj6z/
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0008000000012253-11.dat CryptoLocker_rule2 behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2988-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2988-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0008000000012253-11.dat CryptoLocker_set1 behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2988-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2988-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x0008000000012253-11.dat UPX behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2988-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2988-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2988 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2212 2024-03-10_f2d72709ace821ceaf6cd54133c59a6d_cryptolocker.exe -
resource yara_rule behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x0008000000012253-11.dat upx behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2988-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2988-26-0x0000000000500000-0x000000000050F000-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 2212 wrote to memory of 2988 2212 2024-03-10_f2d72709ace821ceaf6cd54133c59a6d_cryptolocker.exe 28 PID 2212 wrote to memory of 2988 2212 2024-03-10_f2d72709ace821ceaf6cd54133c59a6d_cryptolocker.exe 28 PID 2212 wrote to memory of 2988 2212 2024-03-10_f2d72709ace821ceaf6cd54133c59a6d_cryptolocker.exe 28 PID 2212 wrote to memory of 2988 2212 2024-03-10_f2d72709ace821ceaf6cd54133c59a6d_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-10_f2d72709ace821ceaf6cd54133c59a6d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-10_f2d72709ace821ceaf6cd54133c59a6d_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2212 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2988
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
92KB
MD584b7e57003362c7350bff287cab4804b
SHA1459c2cff12e044afb8d54105d7e0da6565ca447d
SHA2567693ee0f38b33bacd5025f1364e6a9f54d5de27fe7893ca6ccffa7cc2ade318c
SHA5122e69b90241cf30332cb8d3c0aa13ad521bada90d8befb94a4c2d5b31101fd93492f5586a3dd1e17d3eff35182ee7054f3744c3e8bfe9a2d50214f01927042e65