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Windows Analysis Report wIQLBHYbqz


General Information

Sample Name:wIQLBHYbqz (renamed file extension from none to exe)
Analysis ID:483799

Most interesting Screenshot:


Range:0 - 100


Found malware configuration
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Detected FrenchyShellcode packer
Sigma detected: NanoCore
Detected Nanocore Rat
Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for domain / URL
Antivirus detection for dropped file
Yara detected Nanocore RAT
Maps a DLL or memory area into another process
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Writes to foreign memory regions
Binary is likely a compiled AutoIt script file
.NET source code contains potential unpacker
AutoIt script contains suspicious strings
C2 URLs / IPs found in malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Contains functionality to check if a debugger is running (IsDebuggerPresent)
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
Sample execution stops while process was sleeping (likely an evasion)
Stores files to the Windows start menu directory
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to call native functions
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)
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Drops files with a non-matching file extension (content does not match file extension)
Installs a raw input device (often for capturing keystrokes)
Sample file is different than original file name gathered from version info
PE file contains an invalid checksum
PE file contains strange resources
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Creates a start menu entry (Start Menu\Programs\Startup)
Potential key logger detected (key state polling based)
Contains functionality to retrieve information about pressed keystrokes
Creates a process in suspended mode (likely to inject code)


Process Tree

  • System is w10x64
  • wIQLBHYbqz.exe (PID: 4904 cmdline: 'C:\Users\user\Desktop\wIQLBHYbqz.exe' MD5: 1312D6FF22DBD8E9E05D1B0D9130439D)
    • RegAsm.exe (PID: 4936 cmdline: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe MD5: 529695608EAFBED00ACA9E61EF333A7C)
  • RMActivate_isv.exe.bat (PID: 6788 cmdline: 'C:\Users\user\AppData\Roaming\Gfxv2_0\RMActivate_isv.exe.bat' MD5: F9F1A2B23DF822033EC717757776CBB7)
    • RegAsm.exe (PID: 7040 cmdline: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe MD5: 529695608EAFBED00ACA9E61EF333A7C)
  • cleanup

Malware Configuration

Threatname: NanoCore

{"Version": "", "Mutex": "0622add8-a38b-49c1-8dc8-c09cf432", "Group": "NewLappi", "Domain1": "megida.hopto.org", "Domain2": "", "Port": 8822, "KeyboardLogging": "Enable", "RunOnStartup": "Disable", "RequestElevation": "Disable", "BypassUAC": "Disable", "ClearZoneIdentifier": "Enable", "ClearAccessControl": "Disable", "SetCriticalProcess": "Disable", "PreventSystemSleep": "Enable", "ActivateAwayMode": "Disable", "EnableDebugMode": "Disable", "RunDelay": 0, "ConnectDelay": 4000, "RestartDelay": 5000, "TimeoutInterval": 5000, "KeepAliveTimeout": 30000, "MutexTimeout": 5000, "LanTimeout": 2500, "WanTimeout": 8000, "BufferSize": "ffff0000", "MaxPacketSize": "0000a000", "GCThreshold": "0000a000", "UseCustomDNS": "Enable", "PrimaryDNSServer": "", "BackupDNSServer": ""}

Yara Overview

Memory Dumps

0000000D.00000002.617258087.0000000005B70000.00000004.00020000.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0xf7ad:$x1: NanoCore.ClientPluginHost
  • 0xf7da:$x2: IClientNetworkHost
0000000D.00000002.617258087.0000000005B70000.00000004.00020000.sdmpNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
  • 0xf7ad:$x2: NanoCore.ClientPluginHost
  • 0x10888:$s4: PipeCreated
  • 0xf7c7:$s5: IClientLoggingHost
0000000D.00000002.617258087.0000000005B70000.00000004.00020000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    0000000E.00000003.581083346.0000000003668000.00000004.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0x108f5:$x1: NanoCore.ClientPluginHost
    • 0x10932:$x2: IClientNetworkHost
    • 0x14465:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    0000000E.00000003.581083346.0000000003668000.00000004.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
      Click to see the 78 entries

      Unpacked PEs

      22.2.RegAsm.exe.400000.0.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0x1018d:$x1: NanoCore.ClientPluginHost
      • 0x101ca:$x2: IClientNetworkHost
      • 0x13cfd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
      22.2.RegAsm.exe.400000.0.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
      • 0xff05:$x1: NanoCore Client.exe
      • 0x1018d:$x2: NanoCore.ClientPluginHost
      • 0x117c6:$s1: PluginCommand
      • 0x117ba:$s2: FileCommand
      • 0x1266b:$s3: PipeExists
      • 0x18422:$s4: PipeCreated
      • 0x101b7:$s5: IClientLoggingHost
      22.2.RegAsm.exe.400000.0.unpackJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
        22.2.RegAsm.exe.400000.0.unpackNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
        • 0xfef5:$a: NanoCore
        • 0xff05:$a: NanoCore
        • 0x10139:$a: NanoCore
        • 0x1014d:$a: NanoCore
        • 0x1018d:$a: NanoCore
        • 0xff54:$b: ClientPlugin
        • 0x10156:$b: ClientPlugin
        • 0x10196:$b: ClientPlugin
        • 0x1007b:$c: ProjectData
        • 0x10a82:$d: DESCrypto
        • 0x1844e:$e: KeepAlive
        • 0x1643c:$g: LogClientMessage
        • 0x12637:$i: get_Connected
        • 0x10db8:$j: #=q
        • 0x10de8:$j: #=q
        • 0x10e04:$j: #=q
        • 0x10e34:$j: #=q
        • 0x10e50:$j: #=q
        • 0x10e6c:$j: #=q
        • 0x10e9c:$j: #=q
        • 0x10eb8:$j: #=q
        13.2.RegAsm.exe.400000.0.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
        • 0x1018d:$x1: NanoCore.ClientPluginHost
        • 0x101ca:$x2: IClientNetworkHost
        • 0x13cfd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe