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Windows Analysis Report tj9KzQvUFy.exe

Overview

General Information

Sample Name:tj9KzQvUFy.exe
Analysis ID:527671
MD5:e8ae42cfaafd650a14285aaf700d1f2b
SHA1:d4da7fb39e1ef6aa56b01173ebb48fbd80acb416
SHA256:c398ec8923c9de2fe4ff2b9804f41663b1e929b22b3ee848576014f89663618a
Tags:exeNanoCoreRAT
Infos:

Most interesting Screenshot:

Detection

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

Signatures

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Sigma detected: Suspicius Add Task From User AppData Temp
.NET source code contains potential unpacker
Sigma detected: Powershell Defender Exclusion
Adds a directory exclusion to Windows Defender
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 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)
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
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
PE file contains strange resources
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
  • tj9KzQvUFy.exe (PID: 7016 cmdline: "C:\Users\user\Desktop\tj9KzQvUFy.exe" MD5: E8AE42CFAAFD650A14285AAF700D1F2B)
    • powershell.exe (PID: 6344 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\AppData\Roaming\QWtzAVmnpKpJx.exe MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 6324 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 6320 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QWtzAVmnpKpJx" /XML "C:\Users\user\AppData\Local\Temp\tmp6B9E.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 4680 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • tj9KzQvUFy.exe (PID: 6192 cmdline: C:\Users\user\Desktop\tj9KzQvUFy.exe MD5: E8AE42CFAAFD650A14285AAF700D1F2B)
      • schtasks.exe (PID: 6548 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor" /xml "C:\Users\user\AppData\Local\Temp\tmpC635.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 6048 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
      • schtasks.exe (PID: 6572 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor Task" /xml "C:\Users\user\AppData\Local\Temp\tmpCF6D.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 6644 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • tj9KzQvUFy.exe (PID: 5776 cmdline: C:\Users\user\Desktop\tj9KzQvUFy.exe 0 MD5: E8AE42CFAAFD650A14285AAF700D1F2B)
    • powershell.exe (PID: 7064 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\AppData\Roaming\QWtzAVmnpKpJx.exe MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 5420 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 5724 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QWtzAVmnpKpJx" /XML "C:\Users\user\AppData\Local\Temp\tmpB52A.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 6328 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • tj9KzQvUFy.exe (PID: 1992 cmdline: C:\Users\user\Desktop\tj9KzQvUFy.exe MD5: E8AE42CFAAFD650A14285AAF700D1F2B)
    • tj9KzQvUFy.exe (PID: 4804 cmdline: C:\Users\user\Desktop\tj9KzQvUFy.exe MD5: E8AE42CFAAFD650A14285AAF700D1F2B)
  • dhcpmon.exe (PID: 6732 cmdline: "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe" 0 MD5: E8AE42CFAAFD650A14285AAF700D1F2B)
  • dhcpmon.exe (PID: 7072 cmdline: "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe" MD5: E8AE42CFAAFD650A14285AAF700D1F2B)
  • cleanup

Malware Configuration

No configs have been found

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
0000001B.00000002.448411736.0000000000402000.00000040.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0xff8d:$x1: NanoCore.ClientPluginHost
  • 0xffca:$x2: IClientNetworkHost
  • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
0000001B.00000002.448411736.0000000000402000.00000040.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    0000001B.00000002.448411736.0000000000402000.00000040.00000001.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
    • 0xfcf5:$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
    00000009.00000000.377573313.0000000000402000.00000040.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0xff8d:$x1: NanoCore.ClientPluginHost
    • 0xffca:$x2: IClientNetworkHost
    • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    00000009.00000000.377573313.0000000000402000.00000040.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
      Click to see the 65 entries

      Unpacked PEs

      SourceRuleDescriptionAuthorStrings
      9.2.tj9KzQvUFy.exe.6470000.8.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0xd9ad:$x1: NanoCore.ClientPluginHost
      • 0xd9da:$x2: IClientNetworkHost
      9.2.tj9KzQvUFy.exe.6470000.8.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
      • 0xd9ad:$x2: NanoCore.ClientPluginHost
      • 0xea88:$s4: PipeCreated
      • 0xd9c7:$s5: IClientLoggingHost
      9.2.tj9KzQvUFy.exe.6470000.8.unpackJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
        1.2.tj9KzQvUFy.exe.2c617a8.1.raw.unpackJoeSecurity_AntiVM_3Yara detected AntiVM_3Joe Security
          9.0.tj9KzQvUFy.exe.400000.4.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
          • 0x1018d:$x1: NanoCore.ClientPluginHost
          • 0x101ca:$x2: IClientNetworkHost
          • 0x13cfd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
          Click to see the 122 entries

          Sigma Overview

          AV Detection:

          barindex
          Sigma detected: NanoCoreShow sources
          Source: File createdAuthor: Joe Security: Data: EventID: 11, Image: C:\Users\user\Desktop\tj9KzQvUFy.exe, ProcessId: 6192, TargetFilename: C:\Users\user\AppData\Roaming\D06ED635-68F6-4E9A-955C-4899F5F57B9A\run.dat

          E-Banking Fraud:

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