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Windows Analysis Report XnQ8NBKkhW.exe

Overview

General Information

Sample Name:XnQ8NBKkhW.exe
Analysis ID:502390
MD5:c2f9ae069b620080b761d9280473e7aa
SHA1:3df08169a1cb6ec49b4359e5b580c56da2740945
SHA256:1ff5df8d27ee5989ad0e7c7270bf3c6d711a4ea6141043dedf2ce7028ae1bf42
Tags:exeNanoCoreRAT
Infos:

Most interesting Screenshot:

Detection

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

Signatures

Sigma detected: NanoCore
Detected Nanocore Rat
Yara detected AntiVM autoit script
Yara detected Nanocore RAT
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Allocates memory in foreign processes
.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
Drops PE files with a suspicious file extension
Writes to foreign memory regions
Antivirus or Machine Learning detection for unpacked file
Contains functionality to query locales information (e.g. system language)
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Sleep loop found (likely to delay execution)
Detected potential crypto function
Contains functionality to launch a process as a different user
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to check if a window is minimized (may be used to check if an application is visible)
Contains functionality to dynamically determine API calls
Contains functionality to simulate keystroke presses
Contains long sleeps (>= 3 min)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
PE file contains strange resources
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Contains functionality to retrieve information about pressed keystrokes
Creates a process in suspended mode (likely to inject code)
Contains functionality for read data from the clipboard
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to shutdown / reboot the system
Contains functionality to execute programs as a different user
Contains functionality to query CPU information (cpuid)
Found potential string decryption / allocating functions
Contains functionality to communicate with device drivers
Contains functionality to read the clipboard data
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Installs a raw input device (often for capturing keystrokes)
File is packed with WinRar
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Detected TCP or UDP traffic on non-standard ports
Contains functionality to launch a program with higher privileges
Potential key logger detected (key state polling based)
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Contains functionality to simulate mouse events
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to block mouse and keyboard input (often used to hinder debugging)

Classification

Process Tree

  • System is w10x64
  • XnQ8NBKkhW.exe (PID: 1500 cmdline: 'C:\Users\user\Desktop\XnQ8NBKkhW.exe' MD5: C2F9AE069B620080B761D9280473E7AA)
    • plfiqbrm.pif (PID: 1700 cmdline: 'C:\Users\user\68821130\plfiqbrm.pif' mofcxpne.aan MD5: 8E699954F6B5D64683412CC560938507)
      • RegSvcs.exe (PID: 3620 cmdline: C:\Users\user\AppData\Local\Temp\RegSvcs.exe MD5: 2867A3817C9245F7CF518524DFD18F28)
        • schtasks.exe (PID: 6436 cmdline: 'schtasks.exe' /create /f /tn 'DHCP Monitor' /xml 'C:\Users\user\AppData\Local\Temp\tmpD317.tmp' MD5: 15FF7D8324231381BAD48A052F85DF04)
          • conhost.exe (PID: 6464 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • plfiqbrm.pif (PID: 6416 cmdline: 'C:\Users\user\68821130\plfiqbrm.pif' C:\Users\user\68821130\mofcxpne.aan MD5: 8E699954F6B5D64683412CC560938507)
    • RegSvcs.exe (PID: 6684 cmdline: C:\Users\user\AppData\Local\Temp\RegSvcs.exe MD5: 2867A3817C9245F7CF518524DFD18F28)
  • RegSvcs.exe (PID: 6576 cmdline: C:\Users\user\AppData\Local\Temp\RegSvcs.exe 0 MD5: 2867A3817C9245F7CF518524DFD18F28)
    • conhost.exe (PID: 6596 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • cleanup

Malware Configuration

No configs have been found

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
0000000F.00000003.333450416.0000000004171000.00000004.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0xf9dd:$x1: NanoCore.ClientPluginHost
  • 0x427e5:$x1: NanoCore.ClientPluginHost
  • 0xfa1a:$x2: IClientNetworkHost
  • 0x42822:$x2: IClientNetworkHost
  • 0x1354d:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
  • 0x46355:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
0000000F.00000003.333450416.0000000004171000.00000004.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    0000000F.00000003.333450416.0000000004171000.00000004.00000001.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
    • 0xf745:$a: NanoCore
    • 0xf755:$a: NanoCore
    • 0xf989:$a: NanoCore
    • 0xf99d:$a: NanoCore
    • 0xf9dd:$a: NanoCore
    • 0x4254d:$a: NanoCore
    • 0x4255d:$a: NanoCore
    • 0x42791:$a: NanoCore
    • 0x427a5:$a: NanoCore
    • 0x427e5:$a: NanoCore
    • 0xf7a4:$b: ClientPlugin
    • 0xf9a6:$b: ClientPlugin
    • 0xf9e6:$b: ClientPlugin
    • 0x425ac:$b: ClientPlugin
    • 0x427ae:$b: ClientPlugin
    • 0x427ee:$b: ClientPlugin
    • 0xf8cb:$c: ProjectData
    • 0x426d3:$c: ProjectData
    • 0x102d2:$d: DESCrypto
    • 0x430da:$d: DESCrypto
    • 0x17c9e:$e: KeepAlive
    00000008.00000003.296707219.0000000004E99000.00000004.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0xfe5d:$x1: NanoCore.ClientPluginHost
    • 0xfe9a:$x2: IClientNetworkHost
    • 0x139cd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    00000008.00000003.296707219.0000000004E99000.00000004.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
      Click to see the 104 entries

      Unpacked PEs

      SourceRuleDescriptionAuthorStrings
      13.2.RegSvcs.exe.6110000.6.raw.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0xe75:$x1: NanoCore.ClientPluginHost
      • 0xe8f:$x2: IClientNetworkHost
      13.2.RegSvcs.exe.6110000.6.raw.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
      • 0xe75:$x2: NanoCore.ClientPluginHost
      • 0x1261:$s3: PipeExists
      • 0x1136:$s4: PipeCreated
      • 0xeb0:$s5: IClientLoggingHost
      21.2.RegSvcs.exe.4914d2d.4.raw.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0xb184:$x1: NanoCore.ClientPluginHost
      • 0x241f8:$x1: NanoCore.ClientPluginHost
      • 0xb1b1:$x2: IClientNetworkHost
      • 0x24225:$x2: IClientNetworkHost
      21.2.RegSvcs.exe.4914d2d.4.raw.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
      • 0xb184:$x2: NanoCore.ClientPluginHost
      • 0x241f8:$x2: NanoCore.ClientPluginHost
      • 0xc25f:$s4: PipeCreated
      • 0x252d3:$s4: PipeCreated
      • 0xb19e:$s5: IClientLoggingHost
      • 0x24212:$s5: IClientLoggingHost
      21.2.RegSvcs.exe.4914d2d.4.raw.unpackJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
        Click to see the 108 entries

        Sigma Overview

        AV Detection:

        barindex
        Sigma detected: NanoCore