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Analysis
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max time kernel
142s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
20/06/2024, 12:55
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe
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Size
135KB
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MD5
468d816677c7d019a42d3b3237edaa03
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SHA1
78b52296b54d0ad849ed742ec43794440fcc3d74
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SHA256
f82b63410d14c666ce9186b623d8a711dd6424d4831f1e775cc9b922a0de5e06
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SHA512
2ca9ecda91f96c9961280e74cc4d3e8c05df3fcc1af7f5d79d3f13c210f54d43ef1e88592f60b1d7cb5d46f857a2cf1ace071c0a6e2957bc18708495ed7d5fae
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SSDEEP
3072:ZRpAyazIliazTQNVkZ3KY1I4Vq1NFlQ8Jw:xZ8az0GKYPw1NnQ9
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 4556 ilRUGiZaBbDMCeZ.exe 2152 CTS.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" CTS.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\CTS.exe 2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4292 2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe Token: SeDebugPrivilege 2152 CTS.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4292 wrote to memory of 4556 4292 2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe 92 PID 4292 wrote to memory of 4556 4292 2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe 92 PID 4292 wrote to memory of 4556 4292 2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe 92 PID 4292 wrote to memory of 2152 4292 2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe 93 PID 4292 wrote to memory of 2152 4292 2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe 93 PID 4292 wrote to memory of 2152 4292 2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4292 -
C:\Users\Admin\AppData\Local\Temp\ilRUGiZaBbDMCeZ.exeC:\Users\Admin\AppData\Local\Temp\ilRUGiZaBbDMCeZ.exe2⤵
- Executes dropped EXE
PID:4556
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C:\Windows\CTS.exe"C:\Windows\CTS.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2152
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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=4080 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:81⤵PID:2480
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
789KB
MD5910db8c0cd872672592f1c1dc1c17b1f
SHA1152604c669893f9130cf6b2c3ca4b37e6fac57bc
SHA2564b3d1bbbb9ff04180cc5bb46944c651af6d5f733e4135e8e73387072b6b89bfd
SHA512e0563d59b6295b038b6b0cbf999b4f127a64eeab448c7f725927385465120e0ca192bebc2b3506cf55a6d30b9fb962b4787424a42a00b225c1efefc18c2a6e05
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Filesize
64KB
MD5e97c622b03fb2a2598bf019fbbe29f2c
SHA132698bd1d3a0ff6cf441770d1b2b816285068d19
SHA2565c1af46c7300e87a73dacf6cf41ce397e3f05df6bd9c7e227b4ac59f85769160
SHA512db70c62fb35a8e5b005f13b57c1ebbf6c465f6ff0524422294c43e27fb4aa79379dc1e300ad11dc2354405c43b192ae06b91c0f525a1f2617e4d14673651a87d
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Filesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432