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Windows Analysis Report
Ki8WlC0ddA.exe

Overview

General Information

Sample Name:Ki8WlC0ddA.exe
Analysis ID:623786
MD5:0f8819270f261881bdfdbb15fe4f4d7c
SHA1:7473c2e2683725955a0e9ace00fa1dea2a884a4c
SHA256:42bc81c2809d6ae05c7eac0f21374e297f21acb00d3baee3a2c6a14b963a058a
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
Yara detected AntiVM3
Detected Nanocore Rat
Antivirus detection for URL or domain
Multi AV Scanner detection for domain / URL
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)
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
C2 URLs / IPs found in malware configuration
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)
Internet Provider seen in connection with other malware
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
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
Detected TCP or UDP traffic on non-standard ports
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • Ki8WlC0ddA.exe (PID: 4340 cmdline: "C:\Users\user\Desktop\Ki8WlC0ddA.exe" MD5: 0F8819270F261881BDFDBB15FE4F4D7C)
    • powershell.exe (PID: 6620 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\AppData\Roaming\nbbxvA.exe MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 2892 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 2896 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nbbxvA" /XML "C:\Users\user\AppData\Local\Temp\tmp39F4.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 5288 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • Ki8WlC0ddA.exe (PID: 5072 cmdline: C:\Users\user\Desktop\Ki8WlC0ddA.exe MD5: 0F8819270F261881BDFDBB15FE4F4D7C)
    • Ki8WlC0ddA.exe (PID: 6192 cmdline: C:\Users\user\Desktop\Ki8WlC0ddA.exe MD5: 0F8819270F261881BDFDBB15FE4F4D7C)
  • cleanup
{"Version": "1.2.2.0", "Mutex": "6d38b3f5-33a1-41b7-a7f2-d8fe2b39", "Group": "happy man", "Domain1": "91.193.75.221", "Domain2": "", "Port": 4040, "RunOnStartup": "Disable", "RequestElevation": "Disable", "BypassUAC": "Disable", "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"}
SourceRuleDescriptionAuthorStrings
0000000C.00000000.427017575.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0xff8d:$x1: NanoCore.ClientPluginHost
  • 0xffca:$x2: IClientNetworkHost
  • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
0000000C.00000000.427017575.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    0000000C.00000000.427017575.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
    • 0xfcf5:$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
    0000000C.00000002.624692987.0000000000402000.00000040.00000400.00020000.00000000.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0xff8d:$x1: NanoCore.ClientPluginHost
    • 0xffca:$x2: IClientNetworkHost
    • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    0000000C.00000002.624692987.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
      Click to see the 30 entries
      SourceRuleDescriptionAuthorStrings
      12.2.Ki8WlC0ddA.exe.53b4629.7.raw.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
      • 0xb184:$x1: NanoCore.ClientPluginHost
      • 0xb1b1:$x2: IClientNetworkHost
      12.2.Ki8WlC0ddA.exe.53b4629.7.raw.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
      • 0xb184:$x2: NanoCore.ClientPluginHost
      • 0xc25f:$s4: PipeCreated
      • 0xb19e:$s5: IClientLoggingHost
      12.2.Ki8WlC0ddA.exe.53b4629.7.raw.unpackJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
        12.2.Ki8WlC0ddA.exe.53b4629.7.raw.unpackMALWARE_Win_NanoCoreDetects NanoCoreditekSHen
        • 0xb14f:$x2: NanoCore.ClientPlugin
        • 0xb184:$x3: NanoCore.ClientPluginHost
        • 0xb143:$i2: IClientData
        • 0xb165:$i3: IClientNetwork
        • 0xb174:$i5: IClientDataHost
        • 0xb19e:$i6: IClientLoggingHost
        • 0xb1b1:$i7: IClientNetworkHost
        • 0xb1c4:$i8: IClientUIHost
        • 0xb1d2:$i9: IClientNameObjectCollection
        • 0xb1ee:$i10: IClientReadOnlyNameObjectCollection
        • 0xaf41:$s1: ClientPlugin
        • 0xb158:$s1: ClientPlugin
        • 0x10179:$s6: get_ClientSettings
        12.2.Ki8WlC0ddA.exe.53b0000.8.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
        • 0xd9ad:$x1: NanoCore.ClientPluginHost
        • 0xd9da:$x2: IClientNetworkHost