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Windows Analysis Report
ENQUIRY.exe

Overview

General Information

Sample Name:ENQUIRY.exe
Analysis ID:623219
MD5:91bddb099072cd029f56f29dcecca198
SHA1:ad89747d1f03aa6b8ef04e15677a5294fd5a2611
SHA256:149f005f1bf1a73b2bdc3cf829e6f143206c3e24cf1286292ff31858ceca3279
Tags:exeNanoCore
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
Multi AV Scanner detection for dropped file
Yara detected Nanocore RAT
Snort IDS alert for network traffic
Initial sample is a PE file and has a suspicious name
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
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 dynamic DNS services
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
PE file contains strange resources
Drops PE files
Detected TCP or UDP traffic on non-standard ports
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • ENQUIRY.exe (PID: 4676 cmdline: "C:\Users\user\Desktop\ENQUIRY.exe" MD5: 91BDDB099072CD029F56F29DCECCA198)
    • ENQUIRY.exe (PID: 6596 cmdline: C:\Users\user\Desktop\ENQUIRY.exe MD5: 91BDDB099072CD029F56F29DCECCA198)
    • ENQUIRY.exe (PID: 6692 cmdline: C:\Users\user\Desktop\ENQUIRY.exe MD5: 91BDDB099072CD029F56F29DCECCA198)
      • schtasks.exe (PID: 5024 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor" /xml "C:\Users\user\AppData\Local\Temp\tmpDA7E.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 5596 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
      • schtasks.exe (PID: 3532 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor Task" /xml "C:\Users\user\AppData\Local\Temp\tmpE4A1.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 5080 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • ENQUIRY.exe (PID: 6528 cmdline: C:\Users\user\Desktop\ENQUIRY.exe 0 MD5: 91BDDB099072CD029F56F29DCECCA198)
    • ENQUIRY.exe (PID: 5852 cmdline: C:\Users\user\Desktop\ENQUIRY.exe MD5: 91BDDB099072CD029F56F29DCECCA198)
  • dhcpmon.exe (PID: 5896 cmdline: "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe" 0 MD5: 91BDDB099072CD029F56F29DCECCA198)
    • dhcpmon.exe (PID: 5068 cmdline: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe MD5: 91BDDB099072CD029F56F29DCECCA198)
  • dhcpmon.exe (PID: 6856 cmdline: "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe" MD5: 91BDDB099072CD029F56F29DCECCA198)
    • dhcpmon.exe (PID: 6608 cmdline: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe MD5: 91BDDB099072CD029F56F29DCECCA198)
  • cleanup
No configs have been found
SourceRuleDescriptionAuthorStrings
00000013.00000000.470143738.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0xff8d:$x1: NanoCore.ClientPluginHost
  • 0xffca:$x2: IClientNetworkHost
  • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
00000013.00000000.470143738.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    00000013.00000000.470143738.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
    • 0xfcf5:$a: NanoCore
    • 0xfd05:$a: NanoCore
    • 0xff39:$a: NanoCore
    • 0xff4d:$a: NanoCore
    • 0xff8d:$a: NanoCore
    • 0xfd54:$b: ClientPlugin
    • 0xff56:$b: ClientPlugin
    • 0xff96:$b: ClientPlugin
    • 0xfe7b:$c: ProjectData
    • 0x10882:$d: DESCrypto
    • 0x1824e:$e: KeepAlive
    • 0x1623c:$g: LogClientMessage
    • 0x12437:$i: get_Connected
    • 0x10bb8:$j: #=q
    • 0x10be8:$j: #=q
    • 0x10c04:$j: #=q
    • 0x10c34:$j: #=q
    • 0x10c50:$j: #=q
    • 0x10c6c:$j: #=q
    • 0x10c9c:$j: #=q
    • 0x10cb8:$j: #=q
    00000011.00000000.458731760.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0xff8d:$x1: NanoCore.ClientPluginHost
    • 0xffca:$x2: IClientNetworkHost
    • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    00000011.00000000.458731760.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security