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Analysis
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max time kernel
94s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
05/09/2024, 12:13
Static task
static1
Behavioral task
behavioral1
Sample
2024-09-05_a444daee3a1111cf4f4f01ecf6faa9dd_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-09-05_a444daee3a1111cf4f4f01ecf6faa9dd_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-05_a444daee3a1111cf4f4f01ecf6faa9dd_cryptolocker.exe
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Size
63KB
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MD5
a444daee3a1111cf4f4f01ecf6faa9dd
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SHA1
f5d232a902a63095a3bfd69d8e75ba34b2ba3c76
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SHA256
d02fc02255af25b78355424a72fbd0b7e0387ebbb574fdd054726ee4e7697c0f
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SHA512
6ff2b41bce00e54e0bffcd6aba2e4cb847ef6a03a18361dd87cdbee8cdad498cd8f56eee8e7f65459d50077e25d94f8b17e90555eab49fbe228c54f99a0a4179
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SSDEEP
1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnTR:btng54SMLr+/AO/kIhfoKMHdat
Malware Config
Signatures
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Checks computer location settings 2 TTPs 2 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 2024-09-05_a444daee3a1111cf4f4f01ecf6faa9dd_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation gewos.exe -
Executes dropped EXE 1 IoCs
pid Process 1424 gewos.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 2024-09-05_a444daee3a1111cf4f4f01ecf6faa9dd_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language gewos.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1788 wrote to memory of 1424 1788 2024-09-05_a444daee3a1111cf4f4f01ecf6faa9dd_cryptolocker.exe 85 PID 1788 wrote to memory of 1424 1788 2024-09-05_a444daee3a1111cf4f4f01ecf6faa9dd_cryptolocker.exe 85 PID 1788 wrote to memory of 1424 1788 2024-09-05_a444daee3a1111cf4f4f01ecf6faa9dd_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-05_a444daee3a1111cf4f4f01ecf6faa9dd_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-05_a444daee3a1111cf4f4f01ecf6faa9dd_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1788 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1424
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
63KB
MD5e759489507d7eed5661ecc1d4de232d8
SHA10e52ecede958276ecb808f4e132c5c3b74552e66
SHA25691efb02cbab34bcae4be109881cd61dba6fcdb9cc456a15fd859765f7f8903aa
SHA5129de61d8e3851eb698c34cb0e35e1b9d9b7cd56999fa2667aa2ea70566b9e8dcfe82ffddc6ea22687f5aee402c3bdefdae54039ab2733a734d7788bac3d2027b0
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Filesize
184B
MD5900203dbb2cc962939ac057cd1b389e3
SHA17018d7bb36f6cfaea49b9292afeeeecc16df82e8
SHA25699d76e4a305596a6356e827a3163dd8842ebf9629444e20e3355798a89a98c75
SHA5123dc07bdf182adc97faf0ff8bfe2fde9845e2d50acf7f3a05fdbd5722755e275ea74b9116bdcac6893ad61866681c68264723b9d104332963241ae6fb436b5512