Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
13/02/2024, 08:44
Behavioral task
behavioral1
Sample
2024-02-13_ab38d18d7a657f2aaf117dbc653c85fe_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-13_ab38d18d7a657f2aaf117dbc653c85fe_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-13_ab38d18d7a657f2aaf117dbc653c85fe_cryptolocker.exe
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Size
86KB
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MD5
ab38d18d7a657f2aaf117dbc653c85fe
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SHA1
12400fccda20ef413e138ba3c79e391e23a1b725
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SHA256
d17b0669556b51a7f7716ef92dbdf07c8e0c8e9f9abd128224ecc4880d149fb8
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SHA512
bc80edb53e3548f8b95cb9e8dc9ffdf0252810ce9031d8275cc41024fb26feaf5c164941c51b9081f4cff02477fd1df8c02060b94967404f29e64c596f8ce6da
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgL6:AnBdOOtEvwDpj6zi
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2232-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d000000012251-11.dat CryptoLocker_rule2 behavioral1/memory/2232-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2708-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2708-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2232-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d000000012251-11.dat CryptoLocker_set1 behavioral1/memory/2232-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2708-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2708-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2232-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000d000000012251-11.dat UPX behavioral1/memory/2232-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2708-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2708-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2708 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2232 2024-02-13_ab38d18d7a657f2aaf117dbc653c85fe_cryptolocker.exe -
resource yara_rule behavioral1/memory/2232-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000d000000012251-11.dat upx behavioral1/memory/2232-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2708-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2708-26-0x0000000000500000-0x000000000050F000-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 2232 wrote to memory of 2708 2232 2024-02-13_ab38d18d7a657f2aaf117dbc653c85fe_cryptolocker.exe 28 PID 2232 wrote to memory of 2708 2232 2024-02-13_ab38d18d7a657f2aaf117dbc653c85fe_cryptolocker.exe 28 PID 2232 wrote to memory of 2708 2232 2024-02-13_ab38d18d7a657f2aaf117dbc653c85fe_cryptolocker.exe 28 PID 2232 wrote to memory of 2708 2232 2024-02-13_ab38d18d7a657f2aaf117dbc653c85fe_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-13_ab38d18d7a657f2aaf117dbc653c85fe_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-13_ab38d18d7a657f2aaf117dbc653c85fe_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2232 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2708
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
87KB
MD5ef05e03335951c40387eb98a7d369405
SHA1800168ed30ddb980a34201533adc3455265e78de
SHA2569ca0917c7d42abf1fd889f3b0392b7555289365bef6bab457f1b338a58261920
SHA51257e3103ecda17b629a214e8b139c92ee23bc286ee2726124a4509ba3f07913c856737a08251643a1130915d1da9a1b5d35b54039564eb6386c47b153ed575947