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Windows Analysis Report YdACOWCggQ.exe

Overview

General Information

Sample Name:YdACOWCggQ.exe
Analysis ID:501907
MD5:b866823e1f8f4a52376bd108c457dd78
SHA1:fe99849ec27630463080445337798eeba8000a02
SHA256:ebe1bb18a77cf0b34d3ad06919a9adfff2aa69cfafa5b96b670534b890e3e2a8
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
Found malware configuration
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
C2 URLs / IPs found in malware configuration
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)
OS version to string mapping found (often used in BOTs)
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
Dropped file seen in connection with other malware
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
Internet Provider seen in connection with other malware
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)
IP address seen in connection with other malware
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 block mouse and keyboard input (often used to hinder debugging)

Classification

Process Tree

  • System is w10x64
  • YdACOWCggQ.exe (PID: 4896 cmdline: 'C:\Users\user\Desktop\YdACOWCggQ.exe' MD5: B866823E1F8F4A52376BD108C457DD78)
    • mmuiqlcvwo.pif (PID: 5828 cmdline: 'C:\Users\user\33920049\mmuiqlcvwo.pif' fmkkelc.omp MD5: 8E699954F6B5D64683412CC560938507)
      • RegSvcs.exe (PID: 6240 cmdline: C:\Users\user~1\AppData\Local\Temp\RegSvcs.exe MD5: 2867A3817C9245F7CF518524DFD18F28)
        • schtasks.exe (PID: 6272 cmdline: 'schtasks.exe' /create /f /tn 'DHCP Monitor' /xml 'C:\Users\user\AppData\Local\Temp\tmpB828.tmp' MD5: 15FF7D8324231381BAD48A052F85DF04)
          • conhost.exe (PID: 6280 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • RegSvcs.exe (PID: 6348 cmdline: C:\Users\user~1\AppData\Local\Temp\RegSvcs.exe 0 MD5: 2867A3817C9245F7CF518524DFD18F28)
    • conhost.exe (PID: 6364 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • cleanup

Malware Configuration

Threatname: NanoCore

{"Version": "1.2.2.0", "Mutex": "c213d282-998c-4a04-8f80-944681ca", "Group": "nano stub", "Domain1": "ezeani.duckdns.org", "Domain2": "194.5.98.48", "Port": 8338, "RunOnStartup": "Disable", "RequestElevation": "Disable", "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"}

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
0000000E.00000002.784677096.0000000006290000.00000004.00020000.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0xf7ad:$x1: NanoCore.ClientPluginHost
  • 0xf7da:$x2: IClientNetworkHost
0000000E.00000002.784677096.0000000006290000.00000004.00020000.sdmpNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
  • 0xf7ad:$x2: NanoCore.ClientPluginHost
  • 0x10888:$s4: PipeCreated
  • 0xf7c7:$s5: IClientLoggingHost
0000000E.00000002.784677096.0000000006290000.00000004.00020000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    00000008.00000003.300093094.0000000004364000.00000004.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0xf7e5:$x1: NanoCore.ClientPluginHost
    • 0xf822:$x2: IClientNetworkHost
    • 0x13355:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    00000008.00000003.300093094.0000000004364000.00000004.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
      Click to see the 54 entries

      Unpacked PEs

      SourceRuleDescriptionAuthorStrings
      8.3.mmuiqlcvwo.pif.43c9268.4.raw.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0x1018d:$x1: NanoCore.ClientPluginHost
      • 0x101ca:$x2: IClientNetworkHost
      • 0x13cfd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
      8.3.mmuiqlcvwo.pif.43c9268.4.raw.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
      • 0xff05:$x1: NanoCore Client.exe
      • 0x1018d:$x2: NanoCore.ClientPluginHost
      • 0x117c6:$s1: PluginCommand
      • 0x117ba:$s2: FileCommand
      • 0x1266b:$s3: PipeExists
      • 0x18422:$s4: PipeCreated
      • 0x101b7:$s5: IClientLoggingHost
      8.3.mmuiqlcvwo.pif.43c9268.4.raw.unpackJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
        8.3.mmuiqlcvwo.pif.43c9268.4.raw.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:$j: #=q
        14.2.RegSvcs.exe.6290000.8.raw.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
        • 0xf7ad:$x1: NanoCore.ClientPluginHost
        • 0xf7da:$x2: IClientNetworkHost
        Click to see the 65 entries

        Sigma Overview

        AV Detection:

        barindex
        Sigma detected: NanoCoreShow sources
        Source: File createdAuthor: Joe Security: Data: EventID: 11, Image: C:\Users\user\AppData\Local\Temp\RegSvcs.exe, ProcessId: 6240, 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\AppData\Local\Temp\RegSvcs.exe, ProcessId: 6240, TargetFilename: C:\Users\user\AppData\Roaming\D06ED635-68F6-4E9A-955C-4899F5F57B9A\run.dat

        System Summary:

        barindex
        Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper ArgumentsShow sources
        Source: Process startedAuthor: Oleg Kolesnikov @securonix invrep_de, oscd.community, Florian Roth, Christian Burkard: Data: Command: C:\Users\user~1\AppData\Local\Temp\RegSvcs.exe, CommandLine: C:\Users\user~1\AppData\Local\Temp\RegSvcs.exe, CommandLine|base64offset|contains: , Image: C:\Users\user\AppData\Local\Temp\RegSvcs.exe, NewProcessName: C:\Users\user\AppData\Local\Temp\RegSvcs.exe, OriginalFileName: C:\Users\user\AppData\Local\Temp\RegSvcs.exe, ParentCommandLine: 'C:\Users\user\33920049\mmuiqlcvwo.pif' fmkkelc.omp, ParentImage: C:\Users\user\33920049\mmuiqlcvwo.pif, ParentProcessId: 5828, ProcessCommandLine: C:\Users\user~1\AppData\Local\Temp\RegSvcs.exe, ProcessId: 6240
        Sigma detected: Possible Applocker BypassShow sources
        Source: Process startedAuthor: juju4: Data: Command: C:\Users\user~1\AppData\Local\Temp\RegSvcs.exe, CommandLine: C:\Users\user~1\AppData\Local\Temp\RegSvcs.exe, CommandLine|base64offset|contains: , Image: C:\Users\user\AppData\Local\Temp\RegSvcs.exe, NewProcessName: C:\Users\user\AppData\Local\Temp\RegSvcs.exe, OriginalFileName: C:\Users\user\AppData\Local\Temp\RegSvcs.exe, ParentCommandLine: 'C:\Users\user\33920049\mmuiqlcvwo.pif' fmkkelc.omp, ParentImage: C:\Users\user\33920049\mmuiqlcvwo.pif, ParentProcessId: 5828, ProcessCommandLine: C:\Users\user~1\AppData\Local\Temp\RegSvcs.exe, ProcessId: 6240

        Stealing of Sensitive Information:

        barindex
        Sigma detected: NanoCoreShow sources
        Source: File createdAuthor: Joe Security: Data: EventID: 11, Image: C:\Users\user\AppData\Local\Temp\RegSvcs.exe, ProcessId: 6240, TargetFilename: C:\Users\user\AppData\Roaming\D06ED635-68F6-4E9A-955C-4899F5F57B9A\run.dat

        Remote Access Functionality:

        barindex
        Sigma detected: NanoCoreShow sources
        Source: File createdAuthor: Joe Security: Data: EventID: 11, Image: C:\Users\user\AppData\Local\Temp\RegSvcs.exe, ProcessId: 6240, TargetFilename: C:\Users\user\AppData\Roaming\D06ED635-68F6-4E9A-955C-4899F5F57B9A\run.dat

        Jbx Signature Overview

        Click to jump to signature section

        Show All Signature Results

        AV Detection:

        barindex
        Yara detected Nanocore RATShow sources
        Source: Yara matchFile source: 8.3.mmuiqlcvwo.pif.43c9268.4.raw.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 14.2.RegSvcs.exe.6290000.8.raw.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 14.2.RegSvcs.exe.4834d2d.5.raw.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 14.2.RegSvcs.exe.6290000.8.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 8.3.mmuiqlcvwo.pif.43c9268.3.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 14.2.RegSvcs.exe.6294629.9.raw.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 8.3.mmuiqlcvwo.pif.4363658.0.raw.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 8.3.mmuiqlcvwo.pif.442ee78.1.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 14.2.RegSvcs.exe.1300000.1.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 8.3.mmuiqlcvwo.pif.442ee78.1.raw.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 14.2.RegSvcs.exe.4830704.4.raw.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 8.3.mmuiqlcvwo.pif.43c9268.4.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 8.3.mmuiqlcvwo.pif.43c9268.2.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 14.2.RegSvcs.exe.482b8ce.3.raw.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 14.2.RegSvcs.exe.4830704.4.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 8.3.mmuiqlcvwo.pif.43c9268.3.raw.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 8.3.mmuiqlcvwo.pif.4363658.0.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 8.3.mmuiqlcvwo.pif.43c9268.2.raw.unpack, type: UNPACKEDPE
        Source: Yara matchFile source: 0000000E.00000002.784677096.0000000006290000.00000004.00020000.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.300093094.0000000004364000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.300748651.00000000043FD000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.300023978.0000000004397000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.302510420.0000000004331000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 0000000E.00000002.783237000.0000000004829000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.300163395.0000000004331000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.302257446.0000000004792000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.302075228.0000000004397000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.302576684.00000000041A6000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.302365365.00000000043C9000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 0000000E.00000002.775408567.0000000001302000.00000040.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.302148632.0000000004364000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.302206640.00000000043C9000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.299948083.0000000004331000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.300057334.00000000041A7000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: 00000008.00000003.301942248.00000000043FD000.00000004.00000001.sdmp, type: MEMORY
        Source: Yara matchFile source: Process Memory Space: mmuiqlcvwo.pif PID: 5828, type: MEMORYSTR