Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
31-10-2024 08:24
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exe
Resource
win10v2004-20241007-en
General
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Target
2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exe
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Size
45KB
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MD5
43c5150c6d6825cac269ba0cb824806b
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SHA1
354fc6f7bb18d0a2320d1ea27fb76371797250cc
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SHA256
d303bf41e8a124f876bd5d58f17c532d89aafc15be60cc06dd26dd1f18e515fe
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SHA512
d112f490e22379eadfc968a2e3f0d58b664f61d500b365e92cbde138f20a156f6a05cf1d2ada35b6b4b2b6ef5aeed391e191b3dbb16323b82633cb03ecb56d78
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55Q:X6QFElP6n+gJQMOtEvwDpjB0GIWQ
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.
Processes:
2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation 2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid Process 4580 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.
Processes:
2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exeasih.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exedescription pid Process procid_target PID 3544 wrote to memory of 4580 3544 2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exe 85 PID 3544 wrote to memory of 4580 3544 2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exe 85 PID 3544 wrote to memory of 4580 3544 2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-31_43c5150c6d6825cac269ba0cb824806b_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3544 -
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:4580
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD58a53b5cd152b66b733737c7bef358d83
SHA144009f4fc90cd7724a7d50cd30c31ab25e8d68b3
SHA256e8ca784bd06f55b0fb9c2031ffbb016cda74c059d7ff6bf7b029b5caf8b7a70e
SHA512dcd11ca64dfd6d738ff100f4834a238cb9ea13393e0bf4ddbf128cc6f8c3f2ce4bd623ba89ed90c7c3f6f5ca2060829ee49433f8f8a0d8e668bc35f04e9a968e