Analysis
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max time kernel
121s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
13-06-2024 04:25
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe
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Size
71KB
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MD5
2bba3977125de893ab5fd1c7383e26d4
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SHA1
b4d5e65e34bd85188d9456a89a5f04cbede42e6d
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SHA256
3cc717b344f1164fe5eaff17596dfd2ce49ba8ab50cf07bf068c5df52a1c8d0f
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SHA512
a306d421137682cc04adea7a6ad12a635b5215e93251b02cbf27ccf0711d17e8daaa04cdbabcec9bd7c7e26a5687dfa48d8fab52239c0631741c58b44fa3474f
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SSDEEP
1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT9:ZhpAyazIlyazT9
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
CTS.exepid process 2852 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_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exeCTS.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 2024-06-13_2bba3977125de893ab5fd1c7383e26d4_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_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exeCTS.exedescription ioc process File created C:\Windows\CTS.exe 2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exeCTS.exedescription pid process Token: SeDebugPrivilege 2980 2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe Token: SeDebugPrivilege 2852 CTS.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exedescription pid process target process PID 2980 wrote to memory of 2852 2980 2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe CTS.exe PID 2980 wrote to memory of 2852 2980 2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe CTS.exe PID 2980 wrote to memory of 2852 2980 2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe CTS.exe PID 2980 wrote to memory of 2852 2980 2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe CTS.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2980 -
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:2852
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
71KB
MD563a05f3172c8a0373029e3e380fd31cb
SHA1aa9665b992af1f4386545eb0e2c7d5713f5d0bb2
SHA256c056632539c6288763487dac272a276b7c29284ffbc9e5079dfe5876353fc8f9
SHA5125e2da67e9ef7e03a0d5e70713a8c6a692c73cbbbd3dad19db3f23bfcac7ad6c955da587034b570507d800c544ddd7c13af1ae63386093f4f1dd75fe0410671fd
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Filesize
71KB
MD566df4ffab62e674af2e75b163563fc0b
SHA1dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA5121588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25