Analysis
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max time kernel
142s -
max time network
159s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
15-06-2024 10:50
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe
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Size
3.7MB
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MD5
22120b87cbe5e194246fa4f19db74678
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SHA1
b716709f5328e5680a84cdaf73e505beffb6d7df
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SHA256
52deae9d2143ef00e3334135c119aca8e867b4231c27d6565fa0778fb1a57e59
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SHA512
41a0781d90016c71d2fe193fc38b699a992728d693e5df10cb0791974eb68ddcca926f9f8aa73b16d07447582cc661c2554909d67c61cf83b919a11c958bd921
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SSDEEP
98304:6jAnEcfx1KvmrS26gga/bIPajNHH9syAOhyvKD8G7szHFu:7Ec3Agjp3sDOhyvYR7s78
Malware Config
Signatures
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Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exedescription ioc process File opened for modification \??\PhysicalDrive0 2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exepid process 4292 2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe -
Suspicious use of SendNotifyMessage 1 IoCs
Processes:
2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exepid process 4292 2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exepid process 4292 2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe 4292 2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe 4292 2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exedescription pid process target process PID 4292 wrote to memory of 2932 4292 2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe msedge.exe PID 4292 wrote to memory of 2932 4292 2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe msedge.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-15_22120b87cbe5e194246fa4f19db74678_bkransomware.exe"1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument http://ssd-life.com/eng/why-ssd-not-found.html2⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=17 --mojo-platform-channel-handle=3644 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:11⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=18 --mojo-platform-channel-handle=4820 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:11⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4520 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:81⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --disable-gpu-compositing --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=20 --mojo-platform-channel-handle=5756 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:11⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=5524 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:81⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_search_indexer.mojom.SearchIndexerInterfaceBroker --lang=en-US --service-sandbox-type=search_indexer --message-loop-type-ui --no-appcompat-clear --mojo-platform-channel-handle=5520 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\laF915.tmpFilesize
44KB
MD51c9c8f4c4ec16502045d308f365a3af1
SHA1b82728c632d3d87b4ccbb170b420097b43490274
SHA25633292b4403ad1eb74b1106a7d603a7c0a04046e1bff39bdbd77544f362756eb5
SHA512daacc2ec3c3b981b397e3a3fbc3cf5cb884dd1b90a3ca7d87f39b8e4d62706c2393bf0ee7ef50fbea66fdab22cab392c80fb8c638ba80b35cdb14bb8d2526fee