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Windows Analysis Report PO#042.exe

Overview

General Information

Sample Name:PO#042.exe
Analysis ID:528392
MD5:081ec29dd4df8134f1f0c51f5620dd1a
SHA1:a41a3e4874f2dedcc28a732f12c2a9e0efc84995
SHA256:d9aa3e1081c4300ab2c24df237e2ce1f3d66e0c1b8856a2a01d5b95449dccf58
Tags:exeNanoCoreRAT
Infos:

Most interesting Screenshot:

Detection

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

Signatures

Found malware configuration
Yara detected MailPassView
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Sigma detected: NanoCore
Yara detected AntiVM3
Detected Nanocore Rat
Yara detected AveMaria stealer
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
Injects a PE file into a foreign processes
Yara detected WebBrowserPassView password recovery tool
Machine Learning detection for dropped file
C2 URLs / IPs found in malware configuration
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
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
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)
Contains functionality to call native functions
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
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

Process Tree

  • System is w10x64
  • PO#042.exe (PID: 7120 cmdline: "C:\Users\user\Desktop\PO#042.exe" MD5: 081EC29DD4DF8134F1F0C51F5620DD1A)
    • schtasks.exe (PID: 6516 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qCsCiBEHcy" /XML "C:\Users\user\AppData\Local\Temp\tmp5821.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 6528 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • PO#042.exe (PID: 6576 cmdline: {path} MD5: 081EC29DD4DF8134F1F0C51F5620DD1A)
      • schtasks.exe (PID: 6488 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor" /xml "C:\Users\user\AppData\Local\Temp\tmpE454.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 6400 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • PO#042.exe (PID: 6708 cmdline: C:\Users\user\Desktop\PO#042.exe 0 MD5: 081EC29DD4DF8134F1F0C51F5620DD1A)
    • schtasks.exe (PID: 3576 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qCsCiBEHcy" /XML "C:\Users\user\AppData\Local\Temp\tmp82EA.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 3672 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • PO#042.exe (PID: 5768 cmdline: {path} MD5: 081EC29DD4DF8134F1F0C51F5620DD1A)
  • cleanup

Malware Configuration

Threatname: NanoCore

{"Version": "1.2.2.0", "Mutex": "15c24b29-1f3d-4f9d-946e-af4f83ba", "Group": "Blaze", "Domain1": "rickjohssn.ddns.net", "Domain2": "", "Port": 5612, "KeyboardLogging": "Enable", "RunOnStartup": "Disable", "RequestElevation": "Disable", "BypassUAC": "Enable", "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", "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"}

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
00000011.00000002.341913940.0000000000402000.00000040.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0xff8d:$x1: NanoCore.ClientPluginHost
  • 0xffca:$x2: IClientNetworkHost
  • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
00000011.00000002.341913940.0000000000402000.00000040.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    00000011.00000002.341913940.0000000000402000.00000040.00000001.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
    • 0xfcf5:$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
    00000011.00000000.326594390.0000000000402000.00000040.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0xff8d:$x1: NanoCore.ClientPluginHost
    • 0xffca:$x2: IClientNetworkHost
    • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    00000011.00000000.326594390.0000000000402000.00000040.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
      Click to see the 74 entries

      Unpacked PEs

      SourceRuleDescriptionAuthorStrings
      11.2.PO#042.exe.5700000.13.raw.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0xe75:$x1: NanoCore.ClientPluginHost
      • 0xe8f:$x2: IClientNetworkHost
      11.2.PO#042.exe.5700000.13.raw.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
      • 0xe75:$x2: NanoCore.ClientPluginHost
      • 0x1261:$s3: PipeExists
      • 0x1136:$s4: PipeCreated
      • 0xeb0:$s5: IClientLoggingHost
      17.0.PO#042.exe.400000.12.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0x1018d:$x1: NanoCore.ClientPluginHost
      • 0x101ca:$x2: IClientNetworkHost
      • 0x13cfd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
      17.0.PO#042.exe.400000.12.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
      • 0xff05:$x1: NanoCore Client.exe
      • 0x1018d:$x2: NanoCore.ClientPluginHost
      • 0x117c6:$s1: PluginCommand
      • 0x117ba:$s2: FileCommand
      • 0x1266b:$s3: PipeExists
      • 0x18422:$s4: PipeCreated
      • 0x101b7:$s5: IClientLoggingHost
      17.0.PO#042.exe.400000.12.unpackJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
        Click to see the 160 entries

        Sigma Overview

        AV Detection:

        barindex
        Sigma detected: NanoCoreShow sources
        Source: File createdAuthor: Joe Security: Data: EventID: 11, Image: C:\Users\user\Desktop\PO#042.exe, ProcessId: 6576, 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:\Users\user\Desktop\PO#042.exe, ProcessId: 6576, 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\qCsCiBEHcy" /XML "C:\Users\user\AppData\Local\Temp\tmp5821.tmp, CommandLine: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qCsCiBEHcy" /XML "C:\Users\user\AppData\Local\Temp\tmp5821.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#042.exe" , ParentImage: C:\Users\user\Desktop\PO#042.exe, ParentProcessId: 7120, ProcessCommandLine: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qCsCiBEHcy" /XML "C:\Users\user\AppData\Local\Temp\tmp5821.tmp, ProcessId: 6516

        Stealing of Sensitive Information:

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