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Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
07/03/2024, 18:56
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe
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Size
49KB
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MD5
ae4ed7d2da881f0cd252ef93f4fdb6ed
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SHA1
a7432564f9f332255da07763fe3d5e5281ad66de
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SHA256
1a07d36518f9de32a3b29c083e553e21f6b03b34201920480c8f9b820968a336
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SHA512
59139134df7bae3dde5707162691285a1bacc8310418f4fccab083b356b749a635600f4a692dec85749a80412ba5f8acd0640dae82feec109c1a051108ac4541
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SSDEEP
768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CSn:bgGYcA/53GAA6y37Q6dI+d5v
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000400000001e5eb-12.dat CryptoLocker_rule2 -
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 2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3884 hasfj.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 3724 wrote to memory of 3884 3724 2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe 87 PID 3724 wrote to memory of 3884 3724 2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe 87 PID 3724 wrote to memory of 3884 3724 2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3724 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:3884
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
49KB
MD5662c242adf7899b48754724fd9523ec5
SHA1f429b46b62322922eddc5dc78461bced5a8155a1
SHA256d8f472c7bb7a15e20c512a76f7ab052dc337e2524d1def0102d07d002c38ec4f
SHA512108cb70b956ebb0dcd470dad61fc4d42344f1e220a1596ac490c1859d760472c8a4cefc5b09da35a5993111348eeef09bb21895e6f983ba983c603635d9b7c19