Analysis
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max time kernel
133s -
max time network
143s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
31-10-2024 08:23
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe
Resource
win10v2004-20241007-en
General
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Target
2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe
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Size
39KB
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MD5
2a767ced2540d530ae03e36dbe873ffa
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SHA1
6d6a6be9ced25510c172cc4de923d65d0d2d0a18
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SHA256
dc23d08504a34a60410079c50a4d88dd3a03d3f2027b06a9edc15c613fd4ee8a
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SHA512
229612f5345943c43100e37525ad86bddbccafe47b20f857ed022572a8cf284b68e4d58373230b18fb8347d06bde41e600b7c2808db2f879edf4ca7fe3476cc4
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SSDEEP
768:b7o/2n1TCraU6GD1a4Xcn62TUdcuQlqJ51mwl:bc/y2lm6Y0AqJ51mwl
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
rewok.exepid Process 2016 rewok.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exepid Process 2964 2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.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.
Processes:
2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exerewok.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rewok.exe -
Suspicious use of UnmapMainImage 2 IoCs
Processes:
2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exerewok.exepid Process 2964 2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe 2016 rewok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exedescription pid Process procid_target PID 2964 wrote to memory of 2016 2964 2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe 28 PID 2964 wrote to memory of 2016 2964 2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe 28 PID 2964 wrote to memory of 2016 2964 2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe 28 PID 2964 wrote to memory of 2016 2964 2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-31_2a767ced2540d530ae03e36dbe873ffa_cryptolocker.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2964 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
PID:2016
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
39KB
MD52e939ca01505cf56ef87aa878d3966c4
SHA1b3384e5feab3ea943f73fc314b45c48399777f41
SHA25617fafc1a72b1a3d4e03df61d6deecec91a04f01d6ba596a51f3c261dd52ed043
SHA5121aec128757a7fdd9341029230d31f86b29c5df077ca0cd2e146f10c14e99f4961f449d1cc5163e1eda643180305d193c94433c1ffeb0f8c5d83357646f989950