Analysis
- max time kernel
146s - max time network
23s - platform
windows7_x64 - resource
win7v200722 - submitted
17/08/2020, 19:04
General
- Target NEFTSBIN220227540696.exe
- Size 1.2MB
- Sample200817-rn175thmp6
- SHA256 84742df4cd63ab373d601a9f4900b1b55f41ea5f48d93eaebb68b9fd4bf8235a
Malware Config
Extracted
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C:\Users\Admin\AppData\Local\42EF15E83D\Log.txt
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masslogger
- <|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.13 Location: United States Windows OS: Microsoft Windows 7 Professional 64bit Windows Serial Key: HYF8J-CVRMY-CM74G-RPHKF-PW487 CPU: Persocon Processor 2.5+ GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 8/17/2020 9:04:26 PM MassLogger Started: 8/17/2020 9:04:22 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\NEFTSBIN220227540696.exe MassLogger Melt: true MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Killed : 0 malware <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
- UPX packed file 6 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Deletes itself 1 IoCs
- 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 9 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\NEFTSBIN220227540696.exe"C:\Users\Admin\AppData\Local\Temp\NEFTSBIN220227540696.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\NEFTSBIN220227540696.exe"C:\Users\Admin\AppData\Local\Temp\NEFTSBIN220227540696.exe"2⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd" /c start /b powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\NEFTSBIN220227540696.exe' & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\NEFTSBIN220227540696.exe'4⤵
- Deletes itself
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1320-0-0x0000000000400000-0x0000000000582000-memory.dmp
memory/1320-2-0x0000000000400000-0x0000000000582000-memory.dmp
memory/1320-3-0x0000000000400000-0x0000000000582000-memory.dmp
memory/1320-4-0x0000000002090000-0x0000000002148000-memory.dmp
memory/1320-5-0x0000000000662000-0x0000000000663000-memory.dmp
memory/1320-6-0x0000000000670000-0x0000000000722000-memory.dmp
memory/1320-8-0x00000000739C0000-0x00000000740AE000-memory.dmp
memory/1320-11-0x00000000024C0000-0x0000000002531000-memory.dmp
memory/1860-15-0x0000000072D50000-0x000000007343E000-memory.dmp
memory/1860-16-0x00000000023E0000-0x00000000023E1000-memory.dmp
memory/1860-17-0x00000000048A0000-0x00000000048A1000-memory.dmp
memory/1860-18-0x0000000002610000-0x0000000002611000-memory.dmp
memory/1860-19-0x0000000005290000-0x0000000005291000-memory.dmp
memory/1860-22-0x0000000006080000-0x0000000006081000-memory.dmp
memory/1860-27-0x00000000060C0000-0x00000000060C1000-memory.dmp
memory/1860-28-0x00000000060F0000-0x00000000060F1000-memory.dmp
memory/1860-35-0x0000000006280000-0x0000000006281000-memory.dmp
memory/1860-36-0x00000000062A0000-0x00000000062A1000-memory.dmp