Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
27/05/2024, 14:39
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-27_ebb6b5964e08f55110d0af5306743b2b_bkransomware.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-27_ebb6b5964e08f55110d0af5306743b2b_bkransomware.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-27_ebb6b5964e08f55110d0af5306743b2b_bkransomware.exe
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Size
71KB
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MD5
ebb6b5964e08f55110d0af5306743b2b
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SHA1
d58928af79ee0562c30b80265921b768cb46d81f
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SHA256
7fea5bb76f83869740578da6b5c5e7255884e061c7a0a6279ee6c8abebf729e9
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SHA512
44de38a82d50d7cc0a938a826ae7d47b8ecf629542313bf63d599a399615daa56f12b3684bdf40737d8ba84a622aa6f56e86ff36704f34805a7b39c4d6566601
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SSDEEP
1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT/:ZRpAyazIliazT/
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 3824 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" 2024-05-27_ebb6b5964e08f55110d0af5306743b2b_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 2024-05-27_ebb6b5964e08f55110d0af5306743b2b_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1492 2024-05-27_ebb6b5964e08f55110d0af5306743b2b_bkransomware.exe Token: SeDebugPrivilege 3824 CTS.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1492 wrote to memory of 3824 1492 2024-05-27_ebb6b5964e08f55110d0af5306743b2b_bkransomware.exe 83 PID 1492 wrote to memory of 3824 1492 2024-05-27_ebb6b5964e08f55110d0af5306743b2b_bkransomware.exe 83 PID 1492 wrote to memory of 3824 1492 2024-05-27_ebb6b5964e08f55110d0af5306743b2b_bkransomware.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-27_ebb6b5964e08f55110d0af5306743b2b_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-27_ebb6b5964e08f55110d0af5306743b2b_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1492 -
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:3824
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
394KB
MD5d650a5a448d0487b0d2f625740c24dc4
SHA10d35dc6d0465968863ee3ccc6ec10f79842d1cf7
SHA256de9a8e2b9596405306713c9acf27d2136d06928e16e604ac39a99f28110da867
SHA51263e52e1408e67af598b8cf1d953a3be4e3061b49be4edd00d643762edf6ee1cd1e618694f102eda8ef9f90650d1bcf3f5630a12bdb77510750263168adba14ad
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Filesize
71KB
MD5cf96b1ca52d937926c8f55ce8e576d24
SHA194e6f495566eb6e1a4858fc7d24c21e607ac1d51
SHA25641f747d50cee9c0fbd69fe655f78200574d1fe30dae033c1dd1e1f8419997811
SHA512ab5e2a9b4af59caf4f7019b47a1d710964a8707593e9eeb47a72160542e30d6628b9c7ce83eee283aaf88046dde43f5491edc3276d330c70a32faebe4ca95e49
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Filesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432