Analysis
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max time kernel
148s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
15/10/2024, 05:27
Behavioral task
behavioral1
Sample
2024-10-15_2145ebbbabafaa5b5cb92247ee477580_cryptolocker.exe
Resource
win7-20240903-en
General
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Target
2024-10-15_2145ebbbabafaa5b5cb92247ee477580_cryptolocker.exe
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Size
90KB
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MD5
2145ebbbabafaa5b5cb92247ee477580
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SHA1
354b500a8ee9da17d68b60e5347e8630aaf0af6e
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SHA256
9d7fe6d917d472ad4232be1eb9054453cf837de01936530189e26b67f71e77df
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SHA512
a3fb315225bff504e9501a5e0ca8fd2e818a85c637b2956be49150d1300f57a617766a8b29424a1b59769e54948687bd283392cd1e252b7c7f50487a0cd9f543
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SSDEEP
1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAf:n6a+1SEOtEvwDpjYYvQd2Pf
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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation 2024-10-15_2145ebbbabafaa5b5cb92247ee477580_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1268 asih.exe -
resource yara_rule behavioral2/memory/3252-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x000d000000023b7f-13.dat upx behavioral2/memory/3252-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/1268-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
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 2024-10-15_2145ebbbabafaa5b5cb92247ee477580_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 3252 wrote to memory of 1268 3252 2024-10-15_2145ebbbabafaa5b5cb92247ee477580_cryptolocker.exe 84 PID 3252 wrote to memory of 1268 3252 2024-10-15_2145ebbbabafaa5b5cb92247ee477580_cryptolocker.exe 84 PID 3252 wrote to memory of 1268 3252 2024-10-15_2145ebbbabafaa5b5cb92247ee477580_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-15_2145ebbbabafaa5b5cb92247ee477580_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-15_2145ebbbabafaa5b5cb92247ee477580_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3252 -
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:1268
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
90KB
MD50da515017f3681674f54e8ae17d2c845
SHA1d7d3d5ad36845f6b035fd007120b13394ec3dd68
SHA256ca5356f0d8e782c544b80c4eb2219c7ca1b195f1009521d54647b9e5d87debdb
SHA512dfef96fe6c3f1f2b8c3a33e4a78e937b933480bec1a2848bc0847661a61d56b2a0cc8294da1b7f0d73ac07323812df3049c9b305ab46e95c8850f408a7aab1dd