Analysis
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max time kernel
120s -
max time network
100s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
13-06-2024 03:51
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe
Resource
win10v2004-20240611-en
General
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Target
2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe
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Size
71KB
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MD5
d3b25507101c1664beb2e07bc784b0bb
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SHA1
44762e2e73d6c43cc6f544cd2b78442e7f772c4b
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SHA256
e5b966e0e1e54ddf6ea0e78fe0e1bad3c08a7872f789cdde9d5a6a810cbd492b
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SHA512
ce21be09b627735dcf49a50605a6776edd33eb58368c9379645b0f7e35fe2c127b5d8ea932c85f25d5e974ff118857aaee83e5c0bec646944b8a7ea2efe122a9
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SSDEEP
1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTI:ZhpAyazIlyazTI
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
CTS.exepid process 1280 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
Processes:
2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exeCTS.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_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
Processes:
2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exeCTS.exedescription ioc process File created C:\Windows\CTS.exe 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exeCTS.exedescription pid process Token: SeDebugPrivilege 1012 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe Token: SeDebugPrivilege 1280 CTS.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exedescription pid process target process PID 1012 wrote to memory of 1280 1012 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe CTS.exe PID 1012 wrote to memory of 1280 1012 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe CTS.exe PID 1012 wrote to memory of 1280 1012 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe CTS.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1012 -
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:1280
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
394KB
MD56750bf0c5f2d8d70eac1449c4cf7d881
SHA11ac0dd3f2fe32609256c1b98c70fb68fa27e5da6
SHA256d7392e038f3e3023c6464f81a11ab22fe566aae50f01821a0dd9dacdf727ab88
SHA5120880edcd1fceea820d019c13caf02bd3cc78bd68dea4a98d73e8888cf205cb7c0771676dfe811004658160a304abe68c83bf3f33aa92e9df2f3223590e3f64f0
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Filesize
71KB
MD5dd109eaeda70c835005847214547f656
SHA1ca848099434f0e8fe098e21fec098403d2554048
SHA256d6eecfa9d844a61ec1a111a3b2851208206f81d08e001c46df2842b54e64d0ac
SHA51238305f4ae65aac1c73cb2cc8a00cd5dbc4d78d316bcade66fa686e21bf773c1ebbbf2acc343d2ef460bd6e81aa70779ef94b22021aa6adacff9531b6e7c7e81d
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Filesize
71KB
MD566df4ffab62e674af2e75b163563fc0b
SHA1dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA5121588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25