Joe Sandbox Cloud Basic Analysis Report

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Windows Analysis Report
5JbQqP8SDG.exe

Overview

General Information

Sample Name:5JbQqP8SDG.exe
Analysis ID:623788
MD5:250d122f4af32b52435a02787689ebbd
SHA1:39346c41bcb75109dac251320d4afea649538f85
SHA256:14f5c3ab5cbad5d2f6e751e8b3d42204460b8b10a38285623734d631a2ceda09
Tags:exeNanoCoreRAT
Infos:

Detection

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

Signatures

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
Connects to many ports of the same IP (likely port scanning)
Protects its processes via BreakOnTermination flag
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Machine Learning detection for sample
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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
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
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
  • 5JbQqP8SDG.exe (PID: 7036 cmdline: "C:\Users\user\Desktop\5JbQqP8SDG.exe" MD5: 250D122F4AF32B52435A02787689EBBD)
    • schtasks.exe (PID: 6368 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GryVAO" /XML "C:\Users\user\AppData\Local\Temp\tmpBE25.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 6348 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • 5JbQqP8SDG.exe (PID: 4676 cmdline: {path} MD5: 250D122F4AF32B52435A02787689EBBD)
      • schtasks.exe (PID: 1408 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor" /xml "C:\Users\user\AppData\Local\Temp\tmpFEC7.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 6608 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
      • schtasks.exe (PID: 5564 cmdline: schtasks.exe" /create /f /tn "DHCP Monitor Task" /xml "C:\Users\user\AppData\Local\Temp\tmpBD8.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 6652 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • 5JbQqP8SDG.exe (PID: 5976 cmdline: C:\Users\user\Desktop\5JbQqP8SDG.exe 0 MD5: 250D122F4AF32B52435A02787689EBBD)
    • schtasks.exe (PID: 4536 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GryVAO" /XML "C:\Users\user\AppData\Local\Temp\tmp3E23.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 6352 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • 5JbQqP8SDG.exe (PID: 7040 cmdline: {path} MD5: 250D122F4AF32B52435A02787689EBBD)
  • dhcpmon.exe (PID: 6388 cmdline: "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe" 0 MD5: 250D122F4AF32B52435A02787689EBBD)
    • schtasks.exe (PID: 4176 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GryVAO" /XML "C:\Users\user\AppData\Local\Temp\tmp5777.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 6360 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • dhcpmon.exe (PID: 4788 cmdline: {path} MD5: 250D122F4AF32B52435A02787689EBBD)
  • dhcpmon.exe (PID: 6700 cmdline: "C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe" MD5: 250D122F4AF32B52435A02787689EBBD)
    • schtasks.exe (PID: 7052 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GryVAO" /XML "C:\Users\user\AppData\Local\Temp\tmp58BF.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 5696 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • dhcpmon.exe (PID: 2260 cmdline: {path} MD5: 250D122F4AF32B52435A02787689EBBD)
  • cleanup

Malware Configuration

⊘No configs have been found

Yara Signatures

Memory Dumps

SourceRuleDescriptionAuthorStrings
0000001D.00000002.617062843.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0xff8d:$x1: NanoCore.ClientPluginHost
  • 0xffca:$x2: IClientNetworkHost
  • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
0000001D.00000002.617062843.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    0000001D.00000002.617062843.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
    • 0xfcf5:$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
    0000001C.00000000.579285516.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0xff8d:$x1: NanoCore.ClientPluginHost
    • 0xffca:$x2: IClientNetworkHost
    • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    0000001C.00000000.579285516.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security