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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
20/02/2024, 01:57
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-20_e376209fd18b53ad962b922c684b34b6_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-20_e376209fd18b53ad962b922c684b34b6_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-20_e376209fd18b53ad962b922c684b34b6_cryptolocker.exe
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Size
94KB
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MD5
e376209fd18b53ad962b922c684b34b6
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SHA1
024457ef713e273df8a663ebf2c7367780cc0379
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SHA256
179897cd4c5b9e72f46fadc720f22958e20e8c0aedea454c9417b746b7b13e00
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SHA512
b5df714ef763d301323d9cee7f5553bfe8e7da8c84d3a1589721a52ced5a43c28010edbc9f90fe9ea255e524cc9a04575eabcff1a65aed103e5eed90fcaab89b
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpA:V6a+pOtEvwDpjtzL
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000900000002320b-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000900000002320b-12.dat CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation 2024-02-20_e376209fd18b53ad962b922c684b34b6_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4672 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4640 wrote to memory of 4672 4640 2024-02-20_e376209fd18b53ad962b922c684b34b6_cryptolocker.exe 84 PID 4640 wrote to memory of 4672 4640 2024-02-20_e376209fd18b53ad962b922c684b34b6_cryptolocker.exe 84 PID 4640 wrote to memory of 4672 4640 2024-02-20_e376209fd18b53ad962b922c684b34b6_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-20_e376209fd18b53ad962b922c684b34b6_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-20_e376209fd18b53ad962b922c684b34b6_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4640 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4672
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
94KB
MD5ac001e57bd4821b0d631137db1c9b0b0
SHA1ad0d5dfd5c8861d374e25392055c0010a6eb565c
SHA25625d3064c6fcc64485448660806e4cb4fe437b78144f1f0695688dce2a97f3a09
SHA5124da5deca9c616c59ae8b7b9752f64dc775e6f56601a4daf7793205a2fde12838d7762c4f7944388b4d24873a900c15cf8ae9cbf9ed1fc2c45f5fd870c6cd00a3