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Windows Analysis Report filedata

Overview

General Information

Sample Name:filedata (renamed file extension from none to exe)
Analysis ID:552947
MD5:2ce21c68e4d03f35248689663dc820de
SHA1:5963d9d448d322cb49f4dee613734fe030131c11
SHA256:93d545c83fa462035ae0c2aa0036db008fc4bdf3d10ec89c6f0b6699b09c6fbf
Infos:

Most interesting Screenshot:

Detection

Nanocore
Score:96
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Malicious sample detected (through community Yara rule)
Sigma detected: NanoCore
Detected Nanocore Rat
Yara detected Nanocore RAT
Detected unpacking (creates a PE file in dynamic memory)
.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 dynamic DNS services
Uses 32bit PE files
Yara signature match
Antivirus or Machine Learning detection for unpacked file
Contains functionality to check if a debugger is running (IsDebuggerPresent)
May sleep (evasive loops) to hinder dynamic analysis
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Detected potential crypto function
Contains functionality to query CPU information (cpuid)
Found potential string decryption / allocating functions
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
Contains functionality which may be used to detect a debugger (GetProcessHeap)
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
Contains functionality to read the PEB
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Detected TCP or UDP traffic on non-standard ports
Creates a process in suspended mode (likely to inject code)
Contains functionality for read data from the clipboard

Classification

Process Tree

  • System is w10x64
  • filedata.exe (PID: 6760 cmdline: "C:\Users\user\Desktop\filedata.exe" MD5: 2CE21C68E4D03F35248689663DC820DE)
    • filedata.exe (PID: 6220 cmdline: "C:\Users\user\Desktop\filedata.exe" MD5: 2CE21C68E4D03F35248689663DC820DE)
  • chmac.exe (PID: 2812 cmdline: "C:\Users\user\AppData\Roaming\dihsw\chmac.exe" MD5: 2CE21C68E4D03F35248689663DC820DE)
    • chmac.exe (PID: 6352 cmdline: "C:\Users\user\AppData\Roaming\dihsw\chmac.exe" MD5: 2CE21C68E4D03F35248689663DC820DE)
  • chmac.exe (PID: 4476 cmdline: "C:\Users\user\AppData\Roaming\dihsw\chmac.exe" MD5: 2CE21C68E4D03F35248689663DC820DE)
    • chmac.exe (PID: 6968 cmdline: "C:\Users\user\AppData\Roaming\dihsw\chmac.exe" MD5: 2CE21C68E4D03F35248689663DC820DE)
  • cleanup

Malware Configuration

No configs have been found

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
0000000B.00000002.361160585.0000000004920000.00000004.00020000.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
  • 0x1018d:$x1: NanoCore.ClientPluginHost
  • 0x101ca:$x2: IClientNetworkHost
  • 0x13cfd:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
0000000B.00000002.361160585.0000000004920000.00000004.00020000.sdmpNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
  • 0xff05:$x1: NanoCore Client.exe
  • 0x1018d:$x2: NanoCore.ClientPluginHost
  • 0x117c6:$s1: PluginCommand
  • 0x117ba:$s2: FileCommand
  • 0x1266b:$s3: PipeExists
  • 0x18422:$s4: PipeCreated
  • 0x101b7:$s5: IClientLoggingHost
0000000B.00000002.361160585.0000000004920000.00000004.00020000.sdmpJoeSecurity_NanocoreYara detected Nanocore RATJoe Security
    0000000B.00000002.361160585.0000000004920000.00000004.00020000.sdmpNanoCoreunknown 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:$j: #=q
    00000005.00000000.298557071.0000000000414000.00000040.00000001.sdmpNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0x111e5:$x1: NanoCore.ClientPluginHost
    • 0x11222:$x2: IClientNetworkHost
    • 0x14d55:$x3: #=qjgz7ljmpp0J7FvL9dmi8ctJILdgtcbw8JYUc6GC8MeJ9B11Crfg2Djxcf0p8PZGe
    Click to see the 144 entries

    Unpacked PEs

    SourceRuleDescriptionAuthorStrings
    5.2.filedata.exe.5370000.34.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0x6da5:$x1: NanoCore.ClientPluginHost
    • 0x6dd2:$x2: IClientNetworkHost
    5.2.filedata.exe.5370000.34.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
    • 0x6da5:$x2: NanoCore.ClientPluginHost
    • 0x7d74:$s2: FileCommand
    • 0xc776:$s4: PipeCreated
    • 0x6dbf:$s5: IClientLoggingHost
    5.2.filedata.exe.383df59.19.raw.unpackNanocore_RAT_Gen_2Detetcs the Nanocore RATFlorian Roth
    • 0xb184:$x1: NanoCore.ClientPluginHost
    • 0x7eb2e:$x1: NanoCore.ClientPluginHost
    • 0xb1b1:$x2: IClientNetworkHost
    • 0x7eb48:$x2: IClientNetworkHost
    5.2.filedata.exe.383df59.19.raw.unpackNanocore_RAT_Feb18_1Detects Nanocore RATFlorian Roth
    • 0xb184:$x2: NanoCore.ClientPluginHost
    • 0x7eb2e:$x2: NanoCore.ClientPluginHost
    • 0xc25f:$s4: PipeCreated
    • 0x7fb63:$s4: PipeCreated
    • 0xb19e:$s5: IClientLoggingHost
    • 0x7eb1b:$s5: IClientLoggingHost
    5.2.filedata.exe.383df59.19.raw.unpackJoeSecurity_NanocoreYara detected Nanocore RATJoe Security