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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
14/10/2024, 04:24
Behavioral task
behavioral1
Sample
2024-10-14_0d7b3a1febfeb0c7032989b21994d3f7_cryptolocker.exe
Resource
win7-20240903-en
General
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Target
2024-10-14_0d7b3a1febfeb0c7032989b21994d3f7_cryptolocker.exe
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Size
60KB
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MD5
0d7b3a1febfeb0c7032989b21994d3f7
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SHA1
755e466b614767425a39781f64cc5277c54b2fb4
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SHA256
73b9bdb7c3196804821a03b1983c908a2342b82f0031f056e2cc87149a2137da
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SHA512
315d24762d4b592fe81792e1973e9b496fe5cf3b2916e06fba6911cdfa8e9034097bd78d7e9afed8c119cf33a3c3a14c7f37bda70faa51f4d60519ed3819dee5
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SSDEEP
768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP3qp:H6QFElP6n+gou9cvMOtEvwDpjCpVXhp
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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation 2024-10-14_0d7b3a1febfeb0c7032989b21994d3f7_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4452 asih.exe -
resource yara_rule behavioral2/memory/4440-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x000c000000023ba0-13.dat upx behavioral2/memory/4440-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/4452-26-0x0000000000500000-0x0000000000510000-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 2024-10-14_0d7b3a1febfeb0c7032989b21994d3f7_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 4440 wrote to memory of 4452 4440 2024-10-14_0d7b3a1febfeb0c7032989b21994d3f7_cryptolocker.exe 83 PID 4440 wrote to memory of 4452 4440 2024-10-14_0d7b3a1febfeb0c7032989b21994d3f7_cryptolocker.exe 83 PID 4440 wrote to memory of 4452 4440 2024-10-14_0d7b3a1febfeb0c7032989b21994d3f7_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-14_0d7b3a1febfeb0c7032989b21994d3f7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-14_0d7b3a1febfeb0c7032989b21994d3f7_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4440 -
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:4452
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60KB
MD577deaabc2fc0a079170e7d89db6e03e9
SHA172507ab5ffb3e42de9ebaf8c329b2cc218a99769
SHA2568f6e179b77d591d9f6aa019fc48014a2d5e0d9c12288431d00f1f8d35d250cf9
SHA512727b25ac6f84d67b4d7d5670a4497b3cc3fa453878968882ac19a21eaef0222e7d0bb24f3641870ce0c94569975720589dadc091dab3a23bf77c375990d93744