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
25/08/2024, 06:55
Static task
static1
Behavioral task
behavioral1
Sample
2024-08-25_a5c53c784caebca86aac66012d5ee96b_cryptolocker.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
2024-08-25_a5c53c784caebca86aac66012d5ee96b_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-08-25_a5c53c784caebca86aac66012d5ee96b_cryptolocker.exe
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Size
48KB
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MD5
a5c53c784caebca86aac66012d5ee96b
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SHA1
3648ccead1881688c1412e6b0dff122c697a6dce
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SHA256
6b28dce04d724d8c0ee27a02f3d2e5c5cf251ce8cfe4d13f04026054c6811049
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SHA512
162ad625a483fdf6fd3f8b49f0f61e2557403dcfcd178dafd065b7c0e1376946cd682f622acbf0571f50190825e75ce875d06d6eb5211a01e77c803123855c8d
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x5hjatK:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7W
Malware Config
Signatures
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Checks computer location settings 2 TTPs 2 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 hurok.exe Key value queried \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation 2024-08-25_a5c53c784caebca86aac66012d5ee96b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4624 hurok.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 2024-08-25_a5c53c784caebca86aac66012d5ee96b_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hurok.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 5020 wrote to memory of 4624 5020 2024-08-25_a5c53c784caebca86aac66012d5ee96b_cryptolocker.exe 87 PID 5020 wrote to memory of 4624 5020 2024-08-25_a5c53c784caebca86aac66012d5ee96b_cryptolocker.exe 87 PID 5020 wrote to memory of 4624 5020 2024-08-25_a5c53c784caebca86aac66012d5ee96b_cryptolocker.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-08-25_a5c53c784caebca86aac66012d5ee96b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-25_a5c53c784caebca86aac66012d5ee96b_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5020 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4624
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
48KB
MD5cc71104963a1548e119cb0d6d5e084bf
SHA1c016fa6a5802fa2732de63ec511eba9b3006bcaf
SHA2569409daeba98ce0fd886bd969ee8e45e24b5b4185ced45b99847a613f778dc02f
SHA512ee7e164c11f2db38246789e4a589dc55e2ee23c0fbd18adfc5c295aa6468801a208f9a86c9b87925aa89f196d1b93643915948a5371253eda4d8f6344cc32cd0