Analysis
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max time kernel
148s -
max time network
152s -
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 03:52
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe
Resource
win10v2004-20240611-en
General
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Target
2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe
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Size
71KB
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MD5
e3e22c3ade7b7fba3affee9afd606415
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SHA1
60b5ea0a2fffa52f6ccdcf3f908ef67ef7b3940d
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SHA256
ebce197b826e30c0206f28e62edfef1d624cd290345d229812b4377396020b6a
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SHA512
1b3a5fa26b307cbd934b9232102738443dff0f0798e4ef5b4ffadf8402460ff9107fefcfe266fc18c308289d88af4bf24742f49ffdd2bac59403a10b959520af
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SSDEEP
1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTM:ZhpAyazIlyazTM
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
CTS.exepid process 3780 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_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exeCTS.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 2024-06-13_e3e22c3ade7b7fba3affee9afd606415_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_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exeCTS.exedescription ioc process File created C:\Windows\CTS.exe 2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exeCTS.exedescription pid process Token: SeDebugPrivilege 3912 2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe Token: SeDebugPrivilege 3780 CTS.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exedescription pid process target process PID 3912 wrote to memory of 3780 3912 2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe CTS.exe PID 3912 wrote to memory of 3780 3912 2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe CTS.exe PID 3912 wrote to memory of 3780 3912 2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe CTS.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3912 -
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:3780
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
392KB
MD51b0fdfeea83ad199b45aea68c657656c
SHA1346461d6bcb6887c14c4a7648e403fe365b25a6e
SHA2564bf9fc6dc903d8b3c0d7d3a742a9e3f0171c201b6b8bab62072becbf0a7df597
SHA5121f2577ae9e559eefcbe8cb05a6904ae00cc74ec86bfb8b8ba6ad3befa7f2d34771b1d79e397067d4c2391acff82501427b8b4c32672215c1f3156e219b7c9fc8
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Filesize
71KB
MD5436b9ecaa9855d2ffe3d40ed46b9e35c
SHA15067bd2a34093b6f268f902c1e62b7a7cb70870e
SHA2567880c230030dd4df4df98bee91ef44cfac8a3176fb9d8ede08b53f60634f49ac
SHA51216ef627cd3191f700cd03fc89ee4bc4216c8c18a017e8008b3b0ac77de15f85dce92f958edb249706eef6f62d6ef9f6f509366fd219fedc489cc946a16dc9967
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Filesize
71KB
MD566df4ffab62e674af2e75b163563fc0b
SHA1dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA5121588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25