Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
12/06/2024, 18:48
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-12_570a8a8f4397f3aed716cd8d8b12f855_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-12_570a8a8f4397f3aed716cd8d8b12f855_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-12_570a8a8f4397f3aed716cd8d8b12f855_cryptolocker.exe
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Size
44KB
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MD5
570a8a8f4397f3aed716cd8d8b12f855
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SHA1
9b4298604cd22e9c41b569bd2b3f99d7520ce073
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SHA256
dea9b22a98b225868f7c2f9461255f05ab1a8c0cdc449a25448faadacaa6447a
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SHA512
ef7ce233f20d4fb0acfdee09d3c2c793baa33055fc2c7eb579d08f5f67d3d477a1cd81b057dccff77a9602676e9f2c8e0453a4db806c6627cc486b688d48a3f4
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD9Hxl:X6QFElP6n+gJQMOtEvwDpjBmzDkWDtj
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000700000002328e-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000700000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-06-12_570a8a8f4397f3aed716cd8d8b12f855_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 5032 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 3216 wrote to memory of 5032 3216 2024-06-12_570a8a8f4397f3aed716cd8d8b12f855_cryptolocker.exe 82 PID 3216 wrote to memory of 5032 3216 2024-06-12_570a8a8f4397f3aed716cd8d8b12f855_cryptolocker.exe 82 PID 3216 wrote to memory of 5032 3216 2024-06-12_570a8a8f4397f3aed716cd8d8b12f855_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-12_570a8a8f4397f3aed716cd8d8b12f855_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-12_570a8a8f4397f3aed716cd8d8b12f855_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3216 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:5032
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD55a0f0834f0552467c9ca89c6e3ff4f45
SHA1bf83c9eaa66f2f8f21196b4cc705b83f3294eddc
SHA2566265cdad19b6c0bb43884aad86c36c56ca636897239c1ef72704662c6ba2bc7d
SHA512536c06f809a10121d38e80493c4cf192ff5e5dcf63aa23d15fe654bf770f18e2117b8aeb5daca515437f58c0ed959199688bda4e3e71a74299eeeee8e34d82b1