Analysis
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max time kernel
149s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
20/11/2024, 03:26
Static task
static1
Behavioral task
behavioral1
Sample
2024-11-20_44fb9b0ce18d1347be43ff5e430dd711_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-11-20_44fb9b0ce18d1347be43ff5e430dd711_cryptolocker.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-20_44fb9b0ce18d1347be43ff5e430dd711_cryptolocker.exe
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Size
64KB
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MD5
44fb9b0ce18d1347be43ff5e430dd711
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SHA1
fedef65e806bbf8069d8dc448c50e374e81af144
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SHA256
094cf7d3f338cd7ee7d9788078b24b1ff25651fe3d78cb9353722f9661992280
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SHA512
70981f035380c9717775db6c7c45f50a64692e47ba123905c2f3941fdb2b1600059d0fdb88e2df393f82bdc8dfcd655a82b76a2d36bdf538345edc61412dd171
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SSDEEP
1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnT5N:btng54SMLr+/AO/kIhfoKMHda/
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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation 2024-11-20_44fb9b0ce18d1347be43ff5e430dd711_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation gewos.exe -
Executes dropped EXE 1 IoCs
pid Process 3672 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 2024-11-20_44fb9b0ce18d1347be43ff5e430dd711_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 4732 wrote to memory of 3672 4732 2024-11-20_44fb9b0ce18d1347be43ff5e430dd711_cryptolocker.exe 83 PID 4732 wrote to memory of 3672 4732 2024-11-20_44fb9b0ce18d1347be43ff5e430dd711_cryptolocker.exe 83 PID 4732 wrote to memory of 3672 4732 2024-11-20_44fb9b0ce18d1347be43ff5e430dd711_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-11-20_44fb9b0ce18d1347be43ff5e430dd711_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-20_44fb9b0ce18d1347be43ff5e430dd711_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4732 -
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:3672
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
64KB
MD5d53c418dd9e9cc6fe275f1b0fbfb5bd2
SHA1ff1b86c65033cdec5117c05994a2e0e982bd3380
SHA256cfaf77167bac0dc236cff3a25fc0f67c1e057969be61a623e2f8ed43507ac3a1
SHA512a253d7fda170bd10a38fab53c2f60b7982bca301de8079427519f3c77ee830b8a3139b0398136f95cf37e1fa72ad5e12147bce75eef9e26cc6cefdf681a5abd6