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
28-01-2024 19:33
Behavioral task
behavioral1
Sample
2024-01-28_ac7f4ac4641d2ea6014f5d7f9b96a8d6_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-28_ac7f4ac4641d2ea6014f5d7f9b96a8d6_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-28_ac7f4ac4641d2ea6014f5d7f9b96a8d6_cryptolocker.exe
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Size
67KB
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MD5
ac7f4ac4641d2ea6014f5d7f9b96a8d6
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SHA1
59ae37e807cecb8306eb209ea20e6c1b63d80dd0
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SHA256
048089a226b95fce2aa0f3da9b6bdf87a8ff0435259cae48c9ec4dd7e4d24649
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SHA512
e20d4aa5c680c3dbaf1bdd5e4efa7c2261438f60967605516041265c842ad41d68f2900c1593002b54d1ff7d601b6160173a64e07e93c7e7adf8ec87ff96ec1e
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SSDEEP
1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaFAeBW:z6a+CdOOtEvwDpjQo
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2028-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0008000000012254-11.dat CryptoLocker_rule2 behavioral1/memory/2528-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2028-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2528-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2028-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0008000000012254-11.dat CryptoLocker_set1 behavioral1/memory/2528-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2028-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2528-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2028-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0008000000012254-11.dat UPX behavioral1/memory/2528-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2028-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2528-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2528 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2028 2024-01-28_ac7f4ac4641d2ea6014f5d7f9b96a8d6_cryptolocker.exe -
resource yara_rule behavioral1/memory/2028-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0008000000012254-11.dat upx behavioral1/memory/2528-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2028-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2528-26-0x0000000000500000-0x0000000000510000-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 2028 wrote to memory of 2528 2028 2024-01-28_ac7f4ac4641d2ea6014f5d7f9b96a8d6_cryptolocker.exe 28 PID 2028 wrote to memory of 2528 2028 2024-01-28_ac7f4ac4641d2ea6014f5d7f9b96a8d6_cryptolocker.exe 28 PID 2028 wrote to memory of 2528 2028 2024-01-28_ac7f4ac4641d2ea6014f5d7f9b96a8d6_cryptolocker.exe 28 PID 2028 wrote to memory of 2528 2028 2024-01-28_ac7f4ac4641d2ea6014f5d7f9b96a8d6_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-28_ac7f4ac4641d2ea6014f5d7f9b96a8d6_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-28_ac7f4ac4641d2ea6014f5d7f9b96a8d6_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2028 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2528
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD5b616aee1fc958389bd452d667c8ff6e6
SHA1aa7b1225069f35bb5abd0743c96796426b1a9bfa
SHA25675ee91969541dbca2269bab78bfa2dddf44883367039286f21d5e86803a8cecd
SHA512724c6913a8212a4ecf49b7948825ca3ac9c90b769c4ccf6a62a93f259009003951c18af5e35f1f4a47204541d7757d8d92525239bab8c6e974bf1ae586243ccb