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Windows Analysis Report
8FA3B2EB7650AC7FF7DBBEED506E3F17B805D64D69327.exe

Overview

General Information

Sample Name:8FA3B2EB7650AC7FF7DBBEED506E3F17B805D64D69327.exe
Analysis ID:624876
MD5:df1dc1a245d93014003e9ecc4f654602
SHA1:b2f5da6a917d9535a623de61c603d03f0d225fb4
SHA256:8fa3b2eb7650ac7ff7dbbeed506e3f17b805d64d6932715f8885508fb6f988c6
Tags:exeNanoCoreRAT
Infos:

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
Detected Nanocore Rat
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Antivirus detection for dropped file
Multi AV Scanner detection for dropped file
Yara detected Nanocore RAT
Snort IDS alert for network traffic
Machine Learning detection for sample
.NET source code contains potential unpacker
Machine Learning detection for dropped file
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 dynamic DNS services
Uses 32bit PE files
Yara signature match
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Internet Provider seen in connection with other malware
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to call native functions
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
Drops PE files
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Detected TCP or UDP traffic on non-standard ports
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • 8FA3B2EB7650AC7FF7DBBEED506E3F17B805D64D69327.exe (PID: 6408 cmdline: "C:\Users\user\Desktop\8FA3B2EB7650AC7FF7DBBEED506E3F17B805D64D69327.exe" MD5: DF1DC1A245D93014003E9ECC4F654602)
    • schtasks.exe (PID: 6448 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor" /xml "C:\Users\user\AppData\Local\Temp\tmp187C.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 6488 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 6544 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor Task" /xml "C:\Users\user\AppData\Local\Temp\tmp21A4.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 6624 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • dhcpmon.exe (PID: 6776 cmdline: "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe" 0 MD5: DF1DC1A245D93014003E9ECC4F654602)
  • dhcpmon.exe (PID: 6860 cmdline: "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe" MD5: DF1DC1A245D93014003E9ECC4F654602)
  • cleanup
{"Version": "1.2.2.0", "Mutex": "3577d152-ce3c-4012-b95b-9d207c3b", "Group": "Default", "Domain1": "khalil3131.ddns.net", "Domain2": "127.0.0.1", "Port": 1991, "KeyboardLogging": "Enable", "RunOnStartup": "Enable", "RequestElevation": "Enable", "BypassUAC": "Enable", "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": "8.8.8.8", "BackupDNSServer": "8.8.4.4", "BypassUserAccountControlData": "<?xml version=\"1.0\" encoding=\"UTF-16\"?>\r\n<Task version=\"1.2\" xmlns=\"http://schemas.microsoft.com/windows/2004/02/mit/task\">\r\n  <RegistrationInfo />\r\n  <Triggers />\r\n  <Principals>\r\n    <Principal id=\"Author\">\r\n      <LogonType>InteractiveToken</LogonType>\r\n      <RunLevel>HighestAvailable</RunLevel>\r\n    </Principal>\r\n  </Principals>\r\n  <Settings>\r\n    <MultipleInstancesPolicy>Parallel</MultipleInstancesPolicy>\r\n    <DisallowStartIfOnBatteries>false</DisallowStartIfOnBatteries>\r\n    <StopIfGoingOnBatteries>false</StopIfGoingOnBatteries>\r\n    <AllowHardTerminate>true</AllowHardTerminate>\r\n    <StartWhenAvailable>false</StartWhenAvailable>\r\n    <RunOnlyIfNetworkAvailable>false</RunOnlyIfNetworkAvailable>\r\n    <IdleSettings>\r\n      <StopOnIdleEnd>false</StopOnIdleEnd>\r\n      <RestartOnIdle>false</RestartOnIdle>\r\n    </IdleSettings>\r\n    <AllowStartOnDemand>true</AllowStartOnDemand>\r\n    <Enabled>true</Enabled>\r\n    <Hidden>false</Hidden>\r\n    <RunOnlyIfIdle>false</RunOnlyIfIdle>\r\n    <WakeToRun>false</WakeToRun>\r\n    <ExecutionTimeLimit>PT0S</ExecutionTimeLimit>\r\n    <Priority>4</Priority>\r\n  </Settings>\r\n  <Actions Context=\"Author\">\r\n    <Exec>\r\n      <Command>\"#EXECUTABLEPATH\"</Command>\r\n      <Arguments>$(Arg0)</Arguments>\r\n    </Exec>\r\n  </Actions>\r\n</Task"}
SourceRuleDescriptionAuthorStrings
8FA3B2EB7650AC7FF7DBBEED506E3F17B805D64D69327.exeNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0x1018d:$x1: NanoCore.ClientPluginHost
  • 0x101ca:$x2: IClientNetworkHost
  • 0x13cfd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
8FA3B2EB7650AC7FF7DBBEED506E3F17B805D64D69327.exeNanocore_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:$s5: IClientLoggingHost
8FA3B2EB7650AC7FF7DBBEED506E3F17B805D64D69327.exeJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    8FA3B2EB7650AC7FF7DBBEED506E3F17B805D64D69327.exeMALWARE_Win_NanoCoreDetects NanoCoreditekSHen
    • 0xfef5:$x1: NanoCore Client
    • 0xff05:$x1: NanoCore Client
    • 0x1014d:$x2: NanoCore.ClientPlugin
    • 0x1018d:$x3: NanoCore.ClientPluginHost
    • 0x10142:$i1: IClientApp
    • 0x10163:$i2: IClientData
    • 0x1016f:$i3: IClientNetwork
    • 0x1017e:$i4: IClientAppHost
    • 0x101a7:$i5: IClientDataHost
    • 0x101b7:$i6: IClientLoggingHost
    • 0x101ca:$i7: IClientNetworkHost
    • 0x101dd:$i8: IClientUIHost
    • 0x101eb:$i9: IClientNameObjectCollection
    • 0x10207:$i10: IClientReadOnlyNameObjectCollection
    • 0xff54:$s1: ClientPlugin
    • 0x10156:$s1: ClientPlugin
    • 0x1064a:$s2: EndPoint
    • 0x10653:$s3: IPAddress
    • 0x1065d:$s4: IPEndPoint
    • 0x12093:$s6: get_ClientSettings
    • 0x12637:$s7: get_Connected
    8FA3B2EB7650AC7FF7DBBEED506E3F17B805D64D69327.exeNanoCoreunknown 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:$j: #=q
    SourceRuleDescriptionAuthorStrings
    C:\Program Files (x86)\DHCP Monitor\dhcpmon.exeNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0x1018d:$x1: NanoCore.ClientPluginHost
    • 0x101ca:$x2: IClientNetworkHost
    • 0x13cfd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    C:\Program Files (x86)\DHCP Monitor\dhcpmon.exeNanocore_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:$s5: IClientLoggingHost
    C:\Program Files (x86)\DHCP Monitor\dhcpmon.exeJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
      C:\Program Files (x86)\DHCP Monitor\dhcpmon.exeMALWARE_Win_NanoCoreDetects NanoCoreditekSHen
      • 0xfef5:$x1: NanoCore Client
      • 0xff05:$x1: NanoCore Client
      • 0x1014d:$x2: NanoCore.ClientPlugin
      • 0x1018d:$x3: NanoCore.ClientPluginHost
      • 0x10142:$i1: IClientApp
      • 0x10163:$i2: IClientData
      • 0x1016f:$i3: IClientNetwork
      • 0x1017e:$i4: IClientAppHost
      • 0x101a7:$i5: IClientDataHost
      • 0x101b7:$i6: IClientLoggingHost
      • 0x101ca:$i7: IClientNetworkHost
      • 0x101dd:$i8: IClientUIHost
      • 0x101eb:$i9: IClientNameObjectCollection
      • 0x10207:$i10: IClientReadOnlyNameObjectCollection
      • 0xff54:$s1: ClientPlugin
      • 0x10156:$s1: ClientPlugin
      • 0x1064a:$s2: EndPoint
      • 0x10653:$s3: IPAddress
      • 0x1065d:$s4: IPEndPoint
      • 0x12093:$s6: get_ClientSettings
      • 0x12637:$s7: get_Connected
      C:\Program Files (x86)\DHCP Monitor\dhcpmon.exeNanoCoreunknown 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:$j: #=q
      SourceRuleDescriptionAuthorStrings
      00000009.00000000.291791981.0000000000DB2000.00000002.00000001.01000000.00000005.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0xff8d:$x1: NanoCore.ClientPluginHost
      • 0xffca:$x2: IClientNetworkHost
      • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
      00000009.00000000.291791981.0000000000DB2000.00000002.00000001.01000000.00000005.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
        00000009.00000000.291791981.0000000000DB2000.00000002.00000001.01000000.00000005.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:$j: #=q
        00000003.00000002.298371939.0000000002B01000.00000004.00000800.00020000.00000000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
          00000003.00000002.298371939.0000000002B01000.00000004.00000800.00020000.00000000.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
          • 0x23ccb:$a: NanoCore
          • 0x23d24:$a: NanoCore
          • 0x23d61:$a: NanoCore
          • 0x23dda:$a: NanoCore
          • 0x23d2d:$b: ClientPlugin
          • 0x23d6a:$b: ClientPlugin
          • 0x24668:$b: ClientPlugin
          • 0x24675:$b: ClientPlugin
          • 0x1ba3f:$e: KeepAlive
          • 0x241b5:$g: LogClientMessage
          • 0x24135:$i: get_Connected
          • 0x15cfd:$j: #=q
          • 0x15d2d:$j: #=q
          • 0x15d69:$j: #=q
          • 0x15d91:$j: #=q
          • 0x15dc1:$j: #=q
          • 0x15df1:$j: #=q
          • 0x15e21:$j: #=q
          • 0x15e51:$j: #=q
          • 0x15e6d:$j: #=q
          • 0x15e9d:$j: #=q