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Analysis
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max time kernel
171s -
max time network
183s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
10/03/2024, 09:52
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe
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Size
58KB
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MD5
f8708d184ab613226c80a2715e8e4af3
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SHA1
e20fcc78028ce77ce7d4c210a1060c911f3eae69
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SHA256
84b2eacf23ff79ca2d81a1ff905d9ca23c5eeaf2e9df195db7c3615c4a9fca4f
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SHA512
c7bdce7d062ab5498b36f7e764c3be8c0fa42415ae1d3b290ed65ee5995dbd5933462b936feab94cefd334756c8b9a27844856c6324081d139d134ab7f4a6320
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SSDEEP
768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPt547/2VoJ:V6QFElP6n+gMQMOtEvwDpjyaLccVCbH
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000023239-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0008000000023239-12.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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation 2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3968 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 1096 wrote to memory of 3968 1096 2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe 93 PID 1096 wrote to memory of 3968 1096 2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe 93 PID 1096 wrote to memory of 3968 1096 2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1096 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3968
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
58KB
MD5359a07b603a791c13c304479b5d812e7
SHA1b5555621d0af127266165e453f4209d635b6962e
SHA2568c2d75afe52ec37e66a4420bb948467a47562aef8dae74a72ef8051076a51118
SHA512c4beba1e06751a267a06722deb54e62a5cc6e41a50d1ac2c811004ac4d740d11e9907b8dca5196cea7e668242c2422db9ff16abc36ffab0f27dc072dee7adc67