Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-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 2036 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:
CTS.exe2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exedescription ioc process File created C:\Windows\CTS.exe CTS.exe File created C:\Windows\CTS.exe 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exeCTS.exedescription pid process Token: SeDebugPrivilege 1936 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe Token: SeDebugPrivilege 2036 CTS.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exedescription pid process target process PID 1936 wrote to memory of 2036 1936 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe CTS.exe PID 1936 wrote to memory of 2036 1936 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe CTS.exe PID 1936 wrote to memory of 2036 1936 2024-06-13_d3b25507101c1664beb2e07bc784b0bb_bkransomware.exe CTS.exe PID 1936 wrote to memory of 2036 1936 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:1936 -
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:2036
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
71KB
MD56d63c827130a3c148780e6f8e5aa62e0
SHA1267642496a8da22929fb6e41dd844ffa564c222c
SHA25647644ccbec332c54210725219ba0e9166d3c5536da0c3c13ccef7e0ce3126065
SHA512f88f7184b697b6d1dfdc00011ee9ee050e164afd9631b3ace1527925d88e2f7561ee4e84538794974b310188050487579da22c2f0ba50d75d417551786cccc57
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Filesize
71KB
MD566df4ffab62e674af2e75b163563fc0b
SHA1dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA5121588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25