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Windows Analysis Report
lg5wG9Xf5M.exe

Overview

General Information

Sample Name:lg5wG9Xf5M.exe
Analysis ID:623791
MD5:0d8cb66d31ac86cd924b8d279a08f638
SHA1:67027cf108b3d6c2f70213bb6a2092203563a905
SHA256:73f9ccea6a86d11af4bdc6b570e4bf7089e89eafe5f8e27af428fce982b1938b
Tags:exeNanoCoreRAT
Infos:

Detection

Nanocore
Score:100
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Detected unpacking (overwrites its own PE header)
Sigma detected: NanoCore
Yara detected AntiVM3
Detected Nanocore Rat
Detected unpacking (changes PE section rights)
Multi AV Scanner detection for dropped file
Yara detected Nanocore RAT
Connects to many ports of the same IP (likely port scanning)
Protects its processes via BreakOnTermination flag
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Machine Learning detection for sample
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Adds a directory exclusion to Windows Defender
Hides that the sample has been downloaded from the Internet (zone.identifier)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Contains long sleeps (>= 3 min)
Enables debug privileges
Creates a DirectInput object (often for capturing keystrokes)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Installs a raw input device (often for capturing keystrokes)
Sample file is different than original file name gathered from version info
Drops PE files
Detected TCP or UDP traffic on non-standard ports
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • lg5wG9Xf5M.exe (PID: 7004 cmdline: "C:\Users\user\Desktop\lg5wG9Xf5M.exe" MD5: 0D8CB66D31AC86CD924B8D279A08F638)
    • powershell.exe (PID: 5376 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\AppData\Roaming\WabPKzGkhbokAF.exe MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 4992 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 5244 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WabPKzGkhbokAF" /XML "C:\Users\user\AppData\Local\Temp\tmpE5A3.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 6892 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • lg5wG9Xf5M.exe (PID: 4944 cmdline: C:\Users\user\Desktop\lg5wG9Xf5M.exe MD5: 0D8CB66D31AC86CD924B8D279A08F638)
      • schtasks.exe (PID: 2016 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor" /xml "C:\Users\user\AppData\Local\Temp\tmpB017.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 6836 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
      • schtasks.exe (PID: 1236 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor Task" /xml "C:\Users\user\AppData\Local\Temp\tmpBF4A.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 1404 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • lg5wG9Xf5M.exe (PID: 5420 cmdline: C:\Users\user\Desktop\lg5wG9Xf5M.exe 0 MD5: 0D8CB66D31AC86CD924B8D279A08F638)
    • powershell.exe (PID: 5564 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\AppData\Roaming\WabPKzGkhbokAF.exe MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 4624 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 3924 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WabPKzGkhbokAF" /XML "C:\Users\user\AppData\Local\Temp\tmp7FCF.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 640 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • lg5wG9Xf5M.exe (PID: 6068 cmdline: C:\Users\user\Desktop\lg5wG9Xf5M.exe MD5: 0D8CB66D31AC86CD924B8D279A08F638)
  • dhcpmon.exe (PID: 7064 cmdline: "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe" 0 MD5: 0D8CB66D31AC86CD924B8D279A08F638)
    • powershell.exe (PID: 2624 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\AppData\Roaming\WabPKzGkhbokAF.exe MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 3076 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 7072 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WabPKzGkhbokAF" /XML "C:\Users\user\AppData\Local\Temp\tmpA171.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 6980 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • dhcpmon.exe (PID: 6696 cmdline: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe MD5: 0D8CB66D31AC86CD924B8D279A08F638)
  • dhcpmon.exe (PID: 6408 cmdline: "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe" MD5: 0D8CB66D31AC86CD924B8D279A08F638)