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Analysis
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max time kernel
148s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
10/05/2024, 23:23
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-10_49fbaa883c6420116155bdcef92b74bd_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-10_49fbaa883c6420116155bdcef92b74bd_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-10_49fbaa883c6420116155bdcef92b74bd_cryptolocker.exe
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Size
76KB
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MD5
49fbaa883c6420116155bdcef92b74bd
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SHA1
c06cabdc2b0c07883cb74dff10831f579bccf8d4
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SHA256
d000ab68248879ca3906944ba7c384a886edf94c035205c5cb80b2884d07acf4
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SHA512
83d1d4ab167ff29db217a67c60c4bcaf1e90826fb1dc22819ba8b72358198097fa7aa1f8703d7109f98e7bfc947af28732701f0f16e72a55117ea7aa192968a3
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SSDEEP
1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsSljg:X6a+SOtEvwDpjBZYvQd2w
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000900000002291d-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000900000002291d-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation 2024-05-10_49fbaa883c6420116155bdcef92b74bd_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3208 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 3732 wrote to memory of 3208 3732 2024-05-10_49fbaa883c6420116155bdcef92b74bd_cryptolocker.exe 82 PID 3732 wrote to memory of 3208 3732 2024-05-10_49fbaa883c6420116155bdcef92b74bd_cryptolocker.exe 82 PID 3732 wrote to memory of 3208 3732 2024-05-10_49fbaa883c6420116155bdcef92b74bd_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-10_49fbaa883c6420116155bdcef92b74bd_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-10_49fbaa883c6420116155bdcef92b74bd_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3732 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3208
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
76KB
MD580ae6b0291d66cf94f33c9342fa581d0
SHA17e0a2c6e0473300a3078416021403cfdb75c16b6
SHA256e5f6f062b36c27e33581812fcaf305fecdc35db91ea98264eb66ff7c43e790dc
SHA51241ef73c6a249dbfea5a18cbdd304115c9b529e4f8baffa49eae9d323832b53aadc182e4dfd6c34bff574b03206716410edb8ad0b99dca0a55a7d0dbd4b021762