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Analysis
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max time kernel
132s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
08/05/2024, 03:42
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe
Resource
win10v2004-20240419-en
General
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Target
2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe
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Size
71KB
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MD5
04b8127757b255a0ddd8c439136249e2
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SHA1
f55213963df1a849291d52767a652148a6f07e0b
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SHA256
299169bc7a4687aa3fd1f1fbaa951b8a75229840ce61a06677234b5bda46817a
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SHA512
ac162a538746d479bf6e35e682ce2eb51ec57e529329ddf23ac4a67fbffd81f715d73c954577ccf480f1a1db14da84cd95999c6a0d8a31d1570d8131221db496
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SSDEEP
1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT3m:ZRpAyazIliazT2
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 3252 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" 2024-05-08_04b8127757b255a0ddd8c439136249e2_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 2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3652 2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe Token: SeDebugPrivilege 3252 CTS.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3652 wrote to memory of 3252 3652 2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe 84 PID 3652 wrote to memory of 3252 3652 2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe 84 PID 3652 wrote to memory of 3252 3652 2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-08_04b8127757b255a0ddd8c439136249e2_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3652 -
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:3252
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
392KB
MD5caa490350e7ff566510d42e95635e332
SHA1038edc03163f57a59cc28cdb7bcd5f347bc7937d
SHA2563fad9a63769e27d3c4bf60e822075dd55aeebac24cef9924211b5790f0d08582
SHA51228367f2cffa8b7652c577eb7692efa0e813802735d9298e0b2d715e2489ce8a93980ed295dff3fcaad836e4e6eebff8eb6dcef9d714f3858d4a2a51857ced940
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Filesize
71KB
MD5a7050faaf6bfa2e400a6fe243835a0bf
SHA161817d403cfb51f26e205971452f6bc0442e8051
SHA256244662c63a513a942fb7c366c549ecf9ed2f60bb82d55ee95d19b4e6ba315371
SHA512b99ce9881a66e8d0ffefa774598885794a029ec77fc99dbb774455d13a9f0c489b7db0febe70ba38d9628ed6889f239eee5f51e0e74d4dc2b1cf5d6321ceb053
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Filesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432