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Analysis
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max time kernel
148s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
07/09/2024, 08:29
Behavioral task
behavioral1
Sample
2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe
Resource
win7-20240903-en
General
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Target
2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe
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Size
96KB
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MD5
f3f9360273c26f2af050025f233cf0c9
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SHA1
f8b93758b188a17a2985d925c722933757155e1c
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SHA256
3472c9512be9b11ba4a644ce0bfebaba18fdd8db25b12bc81eed32a3625834ff
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SHA512
92ad95c16226543cc1855ad9723154c368aac4597a68852c25aa94309b2421c714fd791af24557bbe84d46232cb1f9292804451155e208e911fe4f3103bcd4e6
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPd:AnBdOOtEvwDpj6zv
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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation 2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3516 asih.exe -
resource yara_rule behavioral2/memory/1728-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral2/files/0x0009000000023451-13.dat upx behavioral2/memory/1728-17-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral2/memory/3516-26-0x0000000000500000-0x000000000050F000-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 2024-09-07_f3f9360273c26f2af050025f233cf0c9_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 1728 wrote to memory of 3516 1728 2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe 84 PID 1728 wrote to memory of 3516 1728 2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe 84 PID 1728 wrote to memory of 3516 1728 2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-07_f3f9360273c26f2af050025f233cf0c9_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1728 -
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:3516
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
96KB
MD555a87fbe9cc25a5f0a4de8455c80d27f
SHA11e1afb7e72317d607fc89230e72bc717fdc67f6e
SHA25633c85ce316fa34c2e26b74d242ff4cc1f44c9867cebc40dcdf349a50ce9ccb3c
SHA512135449568ab750279f0d9d7244afd0e30762ee895594e11ecff5109047d59e1171c628f869fb431a7149499cb22da89daf9b306cb9246cf16ac4089c9b684390