Analysis
-
max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
04-06-2024 01:40
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe
Resource
win10v2004-20240508-en
General
-
Target
2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe
-
Size
71KB
-
MD5
ddabb10468039a14619a357bd42f494d
-
SHA1
74e6ff7c661b4f4e5743d14e14caae6b73a93b87
-
SHA256
9de7cac8c186c098f889262f30f87b76eb907a2545fe17fb3e8c8733b43b1f87
-
SHA512
683468ecd9743b8dbf2374d2c453f27d69cdd4bbb2692f317afa4af6638991e287dce2122d00bb49a41137179df5cf85d9a4801d217613c8c42522977224b715
-
SSDEEP
1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTE:ZhpAyazIlyazTE
Malware Config
Signatures
-
Executes dropped EXE 1 IoCs
Processes:
CTS.exepid Process 2812 CTS.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exeCTS.exedescription ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 2024-06-04_ddabb10468039a14619a357bd42f494d_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:
2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exeCTS.exedescription ioc Process File created C:\Windows\CTS.exe 2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exeCTS.exedescription pid Process Token: SeDebugPrivilege 2952 2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe Token: SeDebugPrivilege 2812 CTS.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exedescription pid Process procid_target PID 2952 wrote to memory of 2812 2952 2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe 28 PID 2952 wrote to memory of 2812 2952 2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe 28 PID 2952 wrote to memory of 2812 2952 2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe 28 PID 2952 wrote to memory of 2812 2952 2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-04_ddabb10468039a14619a357bd42f494d_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2952 -
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:2812
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
71KB
MD54e6bb05687076152dfaecbe24a2c52f6
SHA14e6863d163ea4a2ee8233e1da468888df7707494
SHA2569e8f1b7f9dfade3341dd9b9efe965444025bba252b61344ab1bbccb84be579d3
SHA512cf183f422ad86e186dd1a0b1dcd43db815118076109c7661012ff864d100bf9955b21dcda50f208c4f7eff3fb0d080eaa97c42d3c902922bc1a85a82d3b914ff
-
Filesize
71KB
MD566df4ffab62e674af2e75b163563fc0b
SHA1dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA5121588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25