Analysis
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max time kernel
150s -
max time network
162s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
18/01/2024, 13:42
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe
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Size
36KB
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MD5
4a7aefe48678466d227208625d758727
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SHA1
1a2741ddff5d533bc5699e587778cedf43de2066
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SHA256
563100499a42ef18cc696bb0cef0a2be3da722b00d4c2812e3c59bd28c14baaf
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SHA512
04a221df9afdd23354279cf796e76906272aeddbf3b4c7eda41d8a8773b2022c8bef47414ccd0e6847d160deb7556f72bb6811f6da11b7923b4d4832a0711148
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCm:X6QFElP6n+gJQMOtEvwDpjBmzDUm
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023204-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023204-12.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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation 2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4604 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 2852 wrote to memory of 4604 2852 2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe 88 PID 2852 wrote to memory of 4604 2852 2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe 88 PID 2852 wrote to memory of 4604 2852 2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-18_4a7aefe48678466d227208625d758727_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2852 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4604
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
36KB
MD5e4131f1513bacaeef2a5d91d654c7391
SHA1a6931a5ef460606c754320803dfd342a7ebb449d
SHA2562a185a6694de2e93a2133ed84e8096b3e832e7c5f35e1824aec8e05415d2b73b
SHA5129943481f6c74c28d177867aa8d8a102c7135acc81cb7afba66109bf1bfb09f515dd482e2553ce249a3ce18d35753156a971806df87cee6de4365568845707a84