Analysis
- max time kernel
158s - max time network
184s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
08/01/2024, 04:13
General
- Target 4a68ee47fd872d1e7a957bd6c9585fec.exe
- Size 335KB
- Sample240108-etdt2abhe4
- SHA256 55c845306575a4f6c64875549cbfaa27c17425b905d3e9a7e1e9c41653b88dda
Malware Config
Signatures
- Downloads MZ/PE file
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 12 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- UPX packed file 9 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Adds Run key to start application 2 TTPs 2 IoCs
- Drops file in Program Files directory 6 IoCs
- Drops file in Windows directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4a68ee47fd872d1e7a957bd6c9585fec.exe"C:\Users\Admin\AppData\Local\Temp\4a68ee47fd872d1e7a957bd6c9585fec.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\8zjYmDNjYiJWtMz.exeC:\Users\Admin\AppData\Local\Temp\8zjYmDNjYiJWtMz.exe2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\7zS0FED5518\setup-stub.exe.\setup-stub.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
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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
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
excel.exe_Rules.xml
setup-stub.exe
8zjYmDNjYiJWtMz.exe
InetBgDL.dll
System.dll
UAC.dll
UserInfo.dll
nsDialogs.dll
nsJSON.dll
CTS.exe
memory/632-12-0x00000000006F0000-0x0000000000707000-memory.dmp
memory/632-0-0x00000000006F0000-0x0000000000707000-memory.dmp
memory/1672-104-0x0000000003380000-0x000000000338B000-memory.dmp
memory/2452-59-0x00000000005F0000-0x0000000000607000-memory.dmp
memory/2452-11-0x00000000005F0000-0x0000000000607000-memory.dmp
memory/3824-55-0x0000000000400000-0x0000000000443000-memory.dmp
memory/3824-4-0x0000000000400000-0x0000000000443000-memory.dmp