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Analysis
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max time kernel
148s -
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
12/09/2024, 05:35
Static task
static1
Behavioral task
behavioral1
Sample
2024-09-12_b39a79fbb19c9d9cc405896c7f9a0558_cryptolocker.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-09-12_b39a79fbb19c9d9cc405896c7f9a0558_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-12_b39a79fbb19c9d9cc405896c7f9a0558_cryptolocker.exe
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Size
43KB
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MD5
b39a79fbb19c9d9cc405896c7f9a0558
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SHA1
2c2f49f22edb9fdab3eacda6e5e4bdeda1a40f4f
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SHA256
5e6e743a95719e148754c14fc078966b78b0729c47be5eef914066d62ce4041b
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SHA512
df93c8c6f2b0d694d96f0b7ee0ac1a16c76527469064787bd6acf38be255269d5eaa3c4db966b4445dba7e86497a682b225ff0ce452fc5f4c52d86802f660214
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SSDEEP
768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vF1TJ:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLJ
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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation 2024-09-12_b39a79fbb19c9d9cc405896c7f9a0558_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 804 asih.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 2024-09-12_b39a79fbb19c9d9cc405896c7f9a0558_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 4420 wrote to memory of 804 4420 2024-09-12_b39a79fbb19c9d9cc405896c7f9a0558_cryptolocker.exe 84 PID 4420 wrote to memory of 804 4420 2024-09-12_b39a79fbb19c9d9cc405896c7f9a0558_cryptolocker.exe 84 PID 4420 wrote to memory of 804 4420 2024-09-12_b39a79fbb19c9d9cc405896c7f9a0558_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-12_b39a79fbb19c9d9cc405896c7f9a0558_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-12_b39a79fbb19c9d9cc405896c7f9a0558_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4420 -
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:804
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
44KB
MD5ea6175328d026450ec7d951acb00a57b
SHA1dbbe4a929269845e88976f5da50b5fe57736163b
SHA2569d99835c8162d3478f29ed1c4fbaa0435e5a25cbaaaf5c13a3a78f93b72bc3c0
SHA512d0f97eabc797d6f5d7dddc5a71469d33a3d84ca15349597a819f7eb3e789fe709e7951c72328ac00b89f8795b54b591bfe189b377e6774ac3e3189180597aa14