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Windows Analysis Report PO-13917890546653455345200914.PDF.EXE

Overview

General Information

Sample Name:PO-13917890546653455345200914.PDF.EXE
Analysis ID:526564
MD5:84449b1242cb54afc4bb3e9b628fdfac
SHA1:5e652729685a2717ff71bffd51b6fd3f5614196d
SHA256:2b8acfa28705c8321a35e0a22f554e56b5007d2d4e383061ec3da0fb9658aeca
Tags:exeNanoCore
Infos:

Most interesting Screenshot:

Detection

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

Signatures

Found malware configuration
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
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)
Sigma detected: Suspicius Add Task From User AppData Temp
Machine Learning detection for sample
.NET source code contains potential unpacker
Sigma detected: Powershell Defender Exclusion
Machine Learning detection for dropped file
C2 URLs / IPs found in malware configuration
Adds a directory exclusion to Windows Defender
Uses an obfuscated file name to hide its real file extension (double extension)
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)
Internet Provider seen in connection with other malware
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
IP address seen in connection with other malware
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
Creates a process in suspended mode (likely to inject code)

Classification

Process Tree

  • System is w10x64
  • PO-13917890546653455345200914.PDF.EXE (PID: 5672 cmdline: "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE" MD5: 84449B1242CB54AFC4BB3E9B628FDFAC)
    • powershell.exe (PID: 2892 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 5016 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • powershell.exe (PID: 5320 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\AppData\Roaming\JlUFSgJsk.exe MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 5100 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 1760 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JlUFSgJsk" /XML "C:\Users\user\AppData\Local\Temp\tmpC2D8.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 1312 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • MSBuild.exe (PID: 6532 cmdline: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe MD5: D621FD77BD585874F9686D3A76462EF1)
  • cleanup

Malware Configuration

Threatname: NanoCore

{"Version": "1.2.2.0", "Mutex": "1d5c6a3e-60c1-4684-aee7-fbdc0338", "Domain1": "185.157.160.229", "Domain2": "neoncorex.duckdns.org", "Port": 60006, "KeyboardLogging": "Enable", "RunOnStartup": "Disable", "RequestElevation": "Disable", "BypassUAC": "Disable", "ClearZoneIdentifier": "Disable", "ClearAccessControl": "Disable", "SetCriticalProcess": "Disable", "PreventSystemSleep": "Disable", "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": "8.8.8.8", "BackupDNSServer": "8.8.4.4"}

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
0000000A.00000000.321914533.0000000000402000.00000040.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0xff8d:$x1: NanoCore.ClientPluginHost
  • 0xffca:$x2: IClientNetworkHost
  • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
0000000A.00000000.321914533.0000000000402000.00000040.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    0000000A.00000000.321914533.0000000000402000.00000040.00000001.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
    • 0xfcf5:$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
    0000000A.00000002.557435379.0000000003CC9000.00000004.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
      0000000A.00000002.557435379.0000000003CC9000.00000004.00000001.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
      • 0x2f45:$a: NanoCore
      • 0x2f9e:$a: NanoCore
      • 0x2fdb:$a: NanoCore
      • 0x3054:$a: NanoCore
      • 0x166ff:$a: NanoCore
      • 0x16714:$a: NanoCore
      • 0x16749:$a: NanoCore
      • 0x2f1d3:$a: NanoCore
      • 0x2f1e8:$a: NanoCore
      • 0x2f21d:$a: NanoCore
      • 0x2fa7:$b: ClientPlugin
      • 0x2fe4:$b: ClientPlugin
      • 0x38e2:$b: ClientPlugin
      • 0x38ef:$b: ClientPlugin
      • 0x164bb:$b: ClientPlugin
      • 0x164d6:$b: ClientPlugin
      • 0x16506:$b: ClientPlugin
      • 0x1671d:$b: ClientPlugin
      • 0x16752:$b: ClientPlugin
      • 0x2ef8f:$b: ClientPlugin
      • 0x2efaa:$b: ClientPlugin
      Click to see the 29 entries

      Unpacked PEs

      SourceRuleDescriptionAuthorStrings
      10.2.MSBuild.exe.55f0000.5.raw.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0xe75:$x1: NanoCore.ClientPluginHost
      • 0xe8f:$x2: IClientNetworkHost
      10.2.MSBuild.exe.55f0000.5.raw.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
      • 0xe75:$x2: NanoCore.ClientPluginHost
      • 0x1261:$s3: PipeExists
      • 0x1136:$s4: PipeCreated
      • 0xeb0:$s5: IClientLoggingHost
      10.2.MSBuild.exe.5750000.6.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0xd9ad:$x1: NanoCore.ClientPluginHost
      • 0xd9da:$x2: IClientNetworkHost
      10.2.MSBuild.exe.5750000.6.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
      • 0xd9ad:$x2: NanoCore.ClientPluginHost
      • 0xea88:$s4: PipeCreated
      • 0xd9c7:$s5: IClientLoggingHost
      10.2.MSBuild.exe.5750000.6.unpackJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
        Click to see the 60 entries

        Sigma Overview

        AV Detection:

        barindex
        Sigma detected: NanoCoreShow sources
        Source: File createdAuthor: Joe Security: Data: EventID: 11, Image: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe, ProcessId: 6532, TargetFilename: C:\Users\user\AppData\Roaming\D06ED635-68F6-4E9A-955C-4899F5F57B9A\run.dat

        E-Banking Fraud:

        barindex
        Sigma detected: NanoCoreShow sources
        Source: File createdAuthor: Joe Security: Data: EventID: 11, Image: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe, ProcessId: 6532, TargetFilename: C:\Users\user\AppData\Roaming\D06ED635-68F6-4E9A-955C-4899F5F57B9A\run.dat

        System Summary:

        barindex
        Sigma detected: Suspicius Add Task From User AppData TempShow sources
        Source: Process startedAuthor: frack113: Data: Command: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JlUFSgJsk" /XML "C:\Users\user\AppData\Local\Temp\tmpC2D8.tmp, CommandLine: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JlUFSgJsk" /XML "C:\Users\user\AppData\Local\Temp\tmpC2D8.tmp, CommandLine|base64offset|contains: *j, Image: C:\Windows\SysWOW64\schtasks.exe, NewProcessName: C:\Windows\SysWOW64\schtasks.exe, OriginalFileName: C:\Windows\SysWOW64\schtasks.exe, ParentCommandLine: "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE" , ParentImage: C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE, ParentProcessId: 5672, ProcessCommandLine: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JlUFSgJsk" /XML "C:\Users\user\AppData\Local\Temp\tmpC2D8.tmp, ProcessId: 1760
        Sigma detected: Powershell Defender ExclusionShow sources
        Source: Process startedAuthor: Florian Roth: Data: Command: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE, CommandLine: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE, CommandLine|base64offset|contains: ~2yzw, Image: C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe, NewProcessName: C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe, OriginalFileName: C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe, ParentCommandLine: "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE" , ParentImage: C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE, ParentProcessId: 5672, ProcessCommandLine: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE, ProcessId: 2892
        Sigma detected: Possible Applocker BypassShow sources
        Source: Process startedAuthor: juju4: Data: Command: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe, CommandLine: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe, CommandLine|base64offset|contains: , Image: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe, NewProcessName: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe, OriginalFileName: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe, ParentCommandLine: "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE" , ParentImage: C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE, ParentProcessId: 5672, ProcessCommandLine: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe, ProcessId: 6532
        Sigma detected: Non Interactive PowerShellShow sources
        Source: Process startedAuthor: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): Data: Command: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE, CommandLine: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE, CommandLine|base64offset|contains: ~2yzw, Image: C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe, NewProcessName: C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe, OriginalFileName: C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe, ParentCommandLine: "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE" , ParentImage: C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE, ParentProcessId: 5672, ProcessCommandLine: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\Desktop\PO-13917890546653455345200914.PDF.EXE, ProcessId: 2892
        Sigma detected: T1086 PowerShell ExecutionShow sources
        Source: Pipe createdAuthor: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research): Data: PipeName: \PSHost.132821096807555123.2892.DefaultAppDomain.powershell

        Stealing of Sensitive Information:

        barindex
        Sigma detected: NanoCoreShow sources
        Source: File createdAuthor: Joe Security: Data: EventID: 11, Image: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe, ProcessId: 6532, TargetFilename: C:\Users\user\AppData\Roaming\D06ED635-68F6-4E9A-955C-4899F5F57B9A\run.dat

        Remote Access Functionality: