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Analysis Report Alice Rotich CV.exe

Overview

General Information

Sample Name:Alice Rotich CV.exe
Analysis ID:254729
MD5:00f1eca79a7182fa6b69d34bf81cdf07
SHA1:10e45e7a3eaae06586a768de7c17a36d0dfc510a
SHA256:35b150d62d867c78b998721316d307a77d0d3625b5a314bfc1d16d8c2347bb22

Most interesting Screenshot:

Detection

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

Signatures

Detected Nanocore Rat
Detected unpacking (changes PE section rights)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Malicious sample detected (through community Yara rule)
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Yara detected Nanocore RAT
.NET source code contains potential unpacker
Contains functionality to detect sleep reduction / modifications
Hides that the sample has been downloaded from the Internet (zone.identifier)
Maps a DLL or memory area into another process
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Checks if the current process is being debugged
Contains functionality to call native functions
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a window is minimized (may be used to check if an application is visible)
Contains functionality to detect sandboxes (mouse cursor move detection)
Contains functionality to dynamically determine API calls
Contains functionality to query CPU information (cpuid)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality to read the clipboard data
Contains functionality to record screenshots
Contains functionality to retrieve information about pressed keystrokes
Contains long sleeps (>= 3 min)
Creates a DirectInput object (often for capturing keystrokes)
Creates a process in suspended mode (likely to inject code)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Drops PE files
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found potential string decryption / allocating functions
Installs a raw input device (often for capturing keystrokes)
May sleep (evasive loops) to hinder dynamic analysis
PE file contains strange resources
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Uses code obfuscation techniques (call, push, ret)
Yara signature match

Classification

Startup

  • System is w10x64
  • Alice Rotich CV.exe (PID: 6960 cmdline: 'C:\Users\user\Desktop\Alice Rotich CV.exe' MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
    • Alice Rotich CV.exe (PID: 7088 cmdline: 'C:\Users\user\Desktop\Alice Rotich CV.exe' MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
      • schtasks.exe (PID: 7144 cmdline: 'schtasks.exe' /create /f /tn 'DHCP Monitor' /xml 'C:\Users\user\AppData\Local\Temp\tmp3E68.tmp' MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 7152 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
      • schtasks.exe (PID: 5860 cmdline: 'schtasks.exe' /create /f /tn 'DHCP Monitor Task' /xml 'C:\Users\user\AppData\Local\Temp\tmp4186.tmp' MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 5628 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • Alice Rotich CV.exe (PID: 7096 cmdline: 'C:\Users\user\Desktop\Alice Rotich CV.exe' 2 7088 7026921 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
  • Alice Rotich CV.exe (PID: 5916 cmdline: 'C:\Users\user\Desktop\Alice Rotich CV.exe' 0 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
    • Alice Rotich CV.exe (PID: 4916 cmdline: 'C:\Users\user\Desktop\Alice Rotich CV.exe' 0 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
    • Alice Rotich CV.exe (PID: 5568 cmdline: 'C:\Users\user\Desktop\Alice Rotich CV.exe' 2 4916 7031828 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
      • Alice Rotich CV.exe (PID: 1004 cmdline: C:\Users\user\Desktop\Alice Rotich CV.exe MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
        • Alice Rotich CV.exe (PID: 6780 cmdline: C:\Users\user\Desktop\Alice Rotich CV.exe MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
        • Alice Rotich CV.exe (PID: 6664 cmdline: 'C:\Users\user\Desktop\Alice Rotich CV.exe' 2 6780 7045640 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
          • Alice Rotich CV.exe (PID: 5428 cmdline: C:\Users\user\Desktop\Alice Rotich CV.exe MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
            • Alice Rotich CV.exe (PID: 5292 cmdline: C:\Users\user\Desktop\Alice Rotich CV.exe MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
            • Alice Rotich CV.exe (PID: 5116 cmdline: 'C:\Users\user\Desktop\Alice Rotich CV.exe' 2 5292 7063968 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
  • dhcpmon.exe (PID: 6340 cmdline: 'C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe' 0 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
    • dhcpmon.exe (PID: 6420 cmdline: 'C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe' 0 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
    • dhcpmon.exe (PID: 496 cmdline: 'C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe' 2 6420 7034328 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
      • dhcpmon.exe (PID: 6892 cmdline: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
        • dhcpmon.exe (PID: 6084 cmdline: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
        • dhcpmon.exe (PID: 1304 cmdline: 'C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe' 2 6084 7052406 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
          • dhcpmon.exe (PID: 2516 cmdline: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
            • dhcpmon.exe (PID: 6176 cmdline: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
  • dhcpmon.exe (PID: 6460 cmdline: 'C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe' MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
    • dhcpmon.exe (PID: 5496 cmdline: 'C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe' MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
    • dhcpmon.exe (PID: 824 cmdline: 'C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe' 2 5496 7041703 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
      • dhcpmon.exe (PID: 6800 cmdline: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
        • dhcpmon.exe (PID: 6264 cmdline: C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
        • dhcpmon.exe (PID: 7140 cmdline: 'C:\Program Files (x86)\DHCP Monitor\dhcpmon.exe' 2 6264 7063359 MD5: 00F1ECA79A7182FA6B69D34BF81CDF07)
  • cleanup

Malware Configuration

Threatname: NanoCore

{"C2: ": ["79.134.225.75"], "Version: ": "NanoCore Client, Version=1.2.2.0"}

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
00000022.00000002.322589470.0000000000992000.00000040.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0xff8d:$x1: NanoCore.ClientPluginHost
  • 0xffca:$x2: IClientNetworkHost
  • 0x13afd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
00000022.00000002.322589470.0000000000992000.00000040.00000001.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    00000022.00000002.322589470.0000000000992000.00000040.00000001.sdmpNanoCoreunknown Kevin Breen <kevin@techanarchy.net>
    • 0xfcf5:$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
    00000013.00000002.285175238.0000000002230000.00000004.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0x1018d:$x1: NanoCore.ClientPluginHost
    • 0x101ca:$x2: IClientNetworkHost
    • 0x13cfd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    00000013.00000002.285175238.0000000002230000.00000004.00000001.sdmpNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
    • 0xff05:$x1: NanoCore Client.exe
    • 0x1018d:$x2: NanoCore.ClientPluginHost
    • 0x117c6:$s1: PluginCommand
    • 0x117ba:$s2: FileCommand
    • 0x1266b:$s3: PipeExists
    • 0x18422:$s4: PipeCreated
    • 0x101b7:$s5: IClientLoggingHost