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Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28/03/2024, 09:04
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe
Resource
win7-20240319-en
Behavioral task
behavioral2
Sample
2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe
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Size
49KB
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MD5
e53f4409f64e3c26782de5ed9a02a6d0
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SHA1
2f69b014ae6b9c5e5b6e4d81d666a06e3b34fb00
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SHA256
7665a1ae50a76f310f05584024ec794ce43d92e3804365411667b71e0ff8098a
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SHA512
2779f7b663f294af5250b36b707e561dc9856e6b5318b05b8093c23e1ec59603713a2e55a969838af1e094d86e5db20b9054d91e4ee2af57f433cd700a8e9cb6
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakNQ:V6a+pOtEvwDpjf
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000023203-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0008000000023203-12.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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation 2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4492 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 768 wrote to memory of 4492 768 2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe 86 PID 768 wrote to memory of 4492 768 2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe 86 PID 768 wrote to memory of 4492 768 2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:768 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4492
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
49KB
MD5f1c6b23b059124fa2db311f9cbae7b3e
SHA1dd462911fe589e66a49d48cfd3b86e7da850fe33
SHA256f70bc5e6dead95ceca567922ee5c0346040e47431c7460524d56d93af55ca077
SHA512eb85417e26a8c15659b14ad30d5ec05f05c81c23a0a7c1b55e0f63121591ff31fa7e6c75c60d17a94f0bf1232d7c2231b96988a12a4d5295ff0d7c51f1344c37