Analysis
- max time kernel
71s - max time network
131s - platform
windows10_x64 - resource
win10v20201028 - submitted
16/11/2020, 13:12
General
- Target IMPORT-BOOKING DETAILS.xls.bit.exe
- Size 942KB
- Sample201116-xndwr7vxmx
- SHA256 09abaa1b12ae6d7ed845027756e8852a39ac0a75fecf53f76c08ce48bdf58b91
Malware Config
Signatures
- ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
- ISR Stealer Payload 3 IoCs
- NirSoft MailPassView 1 IoCs
Password recovery tool for various email clients
- Nirsoft 1 IoCs
- UPX packed file 6 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Drops startup file 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Suspicious use of SetThreadContext 3 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 24 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\IMPORT-BOOKING DETAILS.xls.bit.exe"C:\Users\Admin\AppData\Local\Temp\IMPORT-BOOKING DETAILS.xls.bit.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\notepad.exe"C:\Windows\system32\notepad.exe"2⤵
- Drops startup file
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C:\Users\Admin\AppData\Local\Temp\IMPORT-BOOKING DETAILS.xls.bit.exe"C:\Users\Admin\AppData\Local\Temp\IMPORT-BOOKING DETAILS.xls.bit.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\IMPORT-BOOKING DETAILS.xls.bit.exe/scomma "C:\Users\Admin\AppData\Local\Temp\UgBp7YUTrZ.ini"3⤵
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C:\Users\Admin\AppData\Local\Temp\IMPORT-BOOKING DETAILS.xls.bit.exe/scomma "C:\Users\Admin\AppData\Local\Temp\dgacOuW8FT.ini"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/728-0-0x0000000000400000-0x00000000004F2000-memory.dmp
memory/3008-7-0x0000000000400000-0x0000000000453000-memory.dmp
memory/3008-9-0x0000000000400000-0x0000000000453000-memory.dmp
memory/3008-10-0x0000000000400000-0x0000000000453000-memory.dmp
memory/3208-4-0x0000000000400000-0x0000000000442000-memory.dmp
memory/3208-2-0x0000000000400000-0x0000000000442000-memory.dmp
memory/3264-12-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3264-14-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3264-15-0x0000000000400000-0x000000000041F000-memory.dmp