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Analysis
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max time kernel
149s -
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
13/09/2024, 09:16
Behavioral task
behavioral1
Sample
2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe
Resource
win7-20240903-en
General
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Target
2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe
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Size
90KB
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MD5
c1401b9fa68706995020ce885487fbb0
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SHA1
4422f8eb2850e89936bbc64790df598b0873ad55
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SHA256
5b9f96c730f2d2ed136c4d00497912bba980640d6d18a3726b9880fecf730d6d
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SHA512
433aefa256f0ddc5c1f082076886165ea3544bfdb81cfc1ed4e4c6659fb8b8283d7585a42d16e6bcc1cd9da0da88a82de70cb1db5051ac1c42dacaede44a107c
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SSDEEP
1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAu:n6a+1SEOtEvwDpjYYvQd2Pu
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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation 2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2008 asih.exe -
resource yara_rule behavioral2/memory/4572-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x0009000000023462-13.dat upx behavioral2/memory/4572-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/2008-26-0x0000000000500000-0x0000000000510000-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 2024-09-13_c1401b9fa68706995020ce885487fbb0_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 4572 wrote to memory of 2008 4572 2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe 84 PID 4572 wrote to memory of 2008 4572 2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe 84 PID 4572 wrote to memory of 2008 4572 2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4572 -
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:2008
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
90KB
MD5dbf36bcbe8e3f56e2758077d7e6f460f
SHA16997c8b66b8b2ebfe81522a2b62d98a436d16211
SHA25650d3c2af10bd469303378da5e509ef4f69adf0a80511adca8fd3e2a394f52052
SHA512f073bc4c4a01eb47ffcfc3f1051b717869959a6a59e9417151f525ddcc7131e000e6ccf1a304d9e422af6b8060e02b295cb9fdd40eab458df0d3dbb800832c7f