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Windows Analysis Report
wzkp8c4Z3F.exe

Overview

General Information

Sample Name:wzkp8c4Z3F.exe
Analysis ID:708261
MD5:c143cac623fbf082adedd43cad691a69
SHA1:62bd3d43d6e897922cf557d4e40f7d6d9035a4bf
SHA256:3a542858ddb263f3b60a1c7340d508e7f392443e9ee8521d0c9e4a8289173fdf
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)
Sigma detected: NanoCore
Yara detected AntiVM3
Detected Nanocore Rat
Sigma detected: Scheduled temp file as task from temp location
Antivirus detection for URL or domain
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Yara detected Nanocore RAT
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
C2 URLs / IPs found in malware configuration
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
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Contains long sleeps (>= 3 min)
Enables debug privileges
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
Binary contains a suspicious time stamp
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • wzkp8c4Z3F.exe (PID: 5336 cmdline: "C:\Users\user\Desktop\wzkp8c4Z3F.exe" MD5: C143CAC623FBF082ADEDD43CAD691A69)
    • wzkp8c4Z3F.exe (PID: 6004 cmdline: C:\Users\user\Desktop\wzkp8c4Z3F.exe MD5: C143CAC623FBF082ADEDD43CAD691A69)
      • schtasks.exe (PID: 5180 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor" /xml "C:\Users\user\AppData\Local\Temp\tmpDBD9.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 4484 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
      • schtasks.exe (PID: 4596 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor Task" /xml "C:\Users\user\AppData\Local\Temp\tmpF6C5.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)