Analysis
- max time kernel
40s - max time network
43s - platform
windows7_x64 - resource
win7-20230220-en - resource tags
- submitted
30/04/2023, 13:44
General
- Target 4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe
- Size 646KB
- Sample230430-q1ycsshg96
- SHA256 4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d
Malware Config
Extracted
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
eJkG%KP9
Signatures
- 404 Keylogger
Information stealer and keylogger first seen in 2019.
- 404 Keylogger Main Executable 6 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- UPX packed file 3 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe"C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe"C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1788 -s 18683⤵
- Program crash
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1788-54-0x0000000000400000-0x0000000000450000-memory.dmp
memory/1788-57-0x0000000000400000-0x0000000000450000-memory.dmp
memory/1788-58-0x0000000000400000-0x0000000000450000-memory.dmp
memory/1788-59-0x0000000000310000-0x0000000000332000-memory.dmp
memory/1788-60-0x0000000000310000-0x0000000000332000-memory.dmp
memory/1788-71-0x0000000000400000-0x0000000000450000-memory.dmp
memory/1788-72-0x0000000004690000-0x00000000046D0000-memory.dmp
memory/1788-89-0x0000000004690000-0x00000000046D0000-memory.dmp
memory/2036-55-0x0000000000400000-0x00000000004A8000-memory.dmp