Analysis
- max time kernel
17s - max time network
114s - platform
windows10_x64 - resource
win10v200722 - submitted
13/10/2020, 17:54
General
- Target Sep_offerAlumi_pdf.exe
- Size 1006KB
- Sample201013-97xbjrmr1n
- SHA256 74162983ed626c05ba65a31fa71a81ff2bc4cabcfe5019a94f63dc32ae873f23
Malware Config
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 3 IoCs
- UPX packed file 3 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Sep_offerAlumi_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Sep_offerAlumi_pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Sep_offerAlumi_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Sep_offerAlumi_pdf.exe"2⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2584-0-0x0000000000400000-0x0000000000501000-memory.dmp
memory/3728-1-0x0000000000400000-0x000000000051F000-memory.dmp
memory/3728-3-0x0000000000400000-0x000000000051F000-memory.dmp
memory/3728-4-0x0000000000400000-0x000000000051F000-memory.dmp
memory/3728-5-0x0000000002290000-0x0000000002316000-memory.dmp
memory/3728-6-0x0000000000AB2000-0x0000000000AB3000-memory.dmp
memory/3728-7-0x0000000073450000-0x0000000073B3E000-memory.dmp
memory/3728-10-0x00000000027E0000-0x00000000027E1000-memory.dmp
memory/3728-11-0x0000000004EC0000-0x0000000004EC1000-memory.dmp
memory/3728-12-0x0000000005B70000-0x0000000005B71000-memory.dmp
memory/3728-13-0x0000000006470000-0x0000000006471000-memory.dmp
memory/3728-14-0x0000000006450000-0x0000000006451000-memory.dmp
memory/3728-15-0x0000000006580000-0x0000000006581000-memory.dmp