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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
06/10/2024, 03:04
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-06_fc36e9c9de3fb0bea5e0e8c5294eb01d_cryptolocker.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-10-06_fc36e9c9de3fb0bea5e0e8c5294eb01d_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-10-06_fc36e9c9de3fb0bea5e0e8c5294eb01d_cryptolocker.exe
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Size
75KB
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MD5
fc36e9c9de3fb0bea5e0e8c5294eb01d
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SHA1
fb3c4aac2a3540a233b15c5827c54d67e43a941e
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SHA256
e635554ed2acb52e5aee78057ab523b96533776455bf69487f14c5fc12039ccb
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SHA512
584f83169c9d499fd736b46c056452a395782a508c5263863a092c901cd7de1e83ab0b38e096f3fb6054118cc9479ec7e3863a8f259d687c0dd51d23af4dc53b
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SSDEEP
768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMsrx:u6QFElP6n+gWMOtEvwDpjJGYQbrx
Malware Config
Signatures
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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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation 2024-10-06_fc36e9c9de3fb0bea5e0e8c5294eb01d_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4484 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-10-06_fc36e9c9de3fb0bea5e0e8c5294eb01d_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4444 wrote to memory of 4484 4444 2024-10-06_fc36e9c9de3fb0bea5e0e8c5294eb01d_cryptolocker.exe 82 PID 4444 wrote to memory of 4484 4444 2024-10-06_fc36e9c9de3fb0bea5e0e8c5294eb01d_cryptolocker.exe 82 PID 4444 wrote to memory of 4484 4444 2024-10-06_fc36e9c9de3fb0bea5e0e8c5294eb01d_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-06_fc36e9c9de3fb0bea5e0e8c5294eb01d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-06_fc36e9c9de3fb0bea5e0e8c5294eb01d_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4444 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4484
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
75KB
MD5589d075818a545e52544447c9bfd18d4
SHA171514935a2593c4e4ac3e0be16e85dcf3d725728
SHA25637c6973ec39fc9bfbb03728c450019478ed13e3bd92aca8f27ec0173a8aac96b
SHA512f4be3b966d660d592ae839a99b43366e28c29e382e9f0b53e9e45e8a66e9cbabf6c83b898995518d7dff87a5e0491c4e90050f0881428046e79045953cfa1e92