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Analysis
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max time kernel
149s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
23/02/2024, 04:28
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-23_1574091790541a420d0e3162b491d5d1_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-02-23_1574091790541a420d0e3162b491d5d1_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-23_1574091790541a420d0e3162b491d5d1_cryptolocker.exe
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Size
38KB
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MD5
1574091790541a420d0e3162b491d5d1
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SHA1
f811196faf3791de5ff5e619080bcb50c9085129
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SHA256
c0c9ea2c8d4b55f0a7b7218d8b17f81b265f512b565289d67632b5c5833d7a2f
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SHA512
0f94551ad56f804969fed3442af3c3866d51fc2012c030362c38360e6e6820263d484badc35ceeaca8a7c1294cf8a7e6b7530be9168007121518f8e3f77234c0
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcf7M:X6QFElP6n+gJQMOtEvwDpjBsYK6o
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000400000001e5ae-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000400000001e5ae-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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation 2024-02-23_1574091790541a420d0e3162b491d5d1_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3980 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 2528 wrote to memory of 3980 2528 2024-02-23_1574091790541a420d0e3162b491d5d1_cryptolocker.exe 89 PID 2528 wrote to memory of 3980 2528 2024-02-23_1574091790541a420d0e3162b491d5d1_cryptolocker.exe 89 PID 2528 wrote to memory of 3980 2528 2024-02-23_1574091790541a420d0e3162b491d5d1_cryptolocker.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-23_1574091790541a420d0e3162b491d5d1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-23_1574091790541a420d0e3162b491d5d1_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2528 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3980
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
39KB
MD5040600ec9ace80cfad11b7e38eeb3eb8
SHA11fb5e0637e679a7586e9cb8f6f9528c003c40962
SHA256f8f0ded04398c581a8c09aa904b92afa0f3d4b4f5ad9c51cf886c628cfc8d5b6
SHA5125c7c51192ce14a32d824e967267af5c6a5525881cc5bb7497645671107d90cd6e589ebbbc9cb401fab0cb2d139e7a2f6122e8d2c34e37071e83278fd7ecf7305