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Analysis Report PO849300245777.exe


General Information

Sample Name:PO849300245777.exe
Analysis ID:265938

Most interesting Screenshot:


HawkEye MailPassView
Range:0 - 100


Detected HawkEye 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)
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Yara detected HawkEye Keylogger
Yara detected MailPassView
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Changes the view of files in windows explorer (hidden files and folders)
Contains functionality to detect sleep reduction / modifications
Contains functionality to log keystrokes (.Net Source)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
May check the online IP address of the machine
Sample uses process hollowing technique
Writes to foreign memory regions
Yara detected Keylogger Generic
Yara detected WebBrowserPassView password recovery tool
AV process strings found (often used to terminate AV products)
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
Checks if the current process is being debugged
Contains capabilities to detect virtual machines
Contains functionality for read data from the clipboard
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 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)
Creates a window with clipboard capturing capabilities
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 potential string decryption / allocating functions
HTTP GET or POST without a user agent
May infect USB drives
May sleep (evasive loops) to hinder dynamic analysis
One or more processes crash
PE file contains strange resources
Queries disk information (often used to detect virtual machines)
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample file is different than original file name gathered from version info
Sigma detected: Suspicious Process Creation
Stores large binary data to the registry
Tries to load missing DLLs
Uses SMTP (mail sending)
Uses code obfuscation techniques (call, push, ret)
Yara signature match



  • System is w10x64
  • PO849300245777.exe (PID: 6540 cmdline: 'C:\Users\user\Desktop\PO849300245777.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
    • PO849300245777.exe (PID: 6592 cmdline: 'C:\Users\user\Desktop\PO849300245777.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
      • Windows Update.exe (PID: 6660 cmdline: 'C:\Users\user\AppData\Roaming\Windows Update.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
        • Windows Update.exe (PID: 6680 cmdline: 'C:\Users\user\AppData\Roaming\Windows Update.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
          • dw20.exe (PID: 7092 cmdline: dw20.exe -x -s 2640 MD5: 8D10DA8A3E11747E51F23C882C22BBC3)
          • vbc.exe (PID: 6028 cmdline: C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext 'C:\Users\user\AppData\Local\Temp\holdermail.txt' MD5: C63ED21D5706A527419C9FBD730FFB2E)
          • vbc.exe (PID: 2516 cmdline: C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext 'C:\Users\user\AppData\Local\Temp\holderwb.txt' MD5: C63ED21D5706A527419C9FBD730FFB2E)
            • WerFault.exe (PID: 5624 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 704 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • dllhost.exe (PID: 6592 cmdline: C:\Windows\system32\DllHost.exe /Processid:{E10F6C3A-F1AE-4ADC-AA9D-2FE65525666E} MD5: 2528137C6745C4EADD87817A1909677E)
  • WindowsUpdate.exe (PID: 6556 cmdline: 'C:\Users\user\AppData\Roaming\WindowsUpdate.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
  • WindowsUpdate.exe (PID: 4180 cmdline: 'C:\Users\user\AppData\Roaming\WindowsUpdate.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
    • WindowsUpdate.exe (PID: 5768 cmdline: 'C:\Users\user\AppData\Roaming\WindowsUpdate.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
      • Windows Update.exe (PID: 6276 cmdline: 'C:\Users\user\AppData\Roaming\Windows Update.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
        • Windows Update.exe (PID: 4140 cmdline: 'C:\Users\user\AppData\Roaming\Windows Update.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
          • dw20.exe (PID: 5876 cmdline: dw20.exe -x -s 2636 MD5: 8D10DA8A3E11747E51F23C882C22BBC3)
          • vbc.exe (PID: 6904 cmdline: C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext 'C:\Users\user\AppData\Local\Temp\holdermail.txt' MD5: C63ED21D5706A527419C9FBD730FFB2E)
          • vbc.exe (PID: 4764 cmdline: C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext 'C:\Users\user\AppData\Local\Temp\holderwb.txt' MD5: C63ED21D5706A527419C9FBD730FFB2E)
  • WindowsUpdate.exe (PID: 4920 cmdline: 'C:\Users\user\AppData\Roaming\WindowsUpdate.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
  • WindowsUpdate.exe (PID: 1764 cmdline: 'C:\Users\user\AppData\Roaming\WindowsUpdate.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
    • WindowsUpdate.exe (PID: 5040 cmdline: 'C:\Users\user\AppData\Roaming\WindowsUpdate.exe' MD5: 4FFC019400736D096573FB09E94DDAFC)
  • cleanup

Malware Configuration

Threatname: HawkEye

{"Modules": ["WebBrowserPassView", "mailpv", "Mail PassView"], "Version": ""}

Yara Overview

Memory Dumps

00000002.00000001.241138825.0000000000497000.00000040.00020000.sdmpRAT_HawkEyeDetects HawkEye RATKevin Breen <kevin@techanarchy.net>
  • 0x7b9fb:$key: HawkEyeKeylogger
  • 0x7dc65:$salt: 099u787978786
  • 0x7c058:$string1: HawkEye_Keylogger
  • 0x7ce97:$string1: HawkEye_Keylogger
  • 0x7dbc5:$string1: HawkEye_Keylogger
  • 0x7c42d:$string2: holdermail.txt
  • 0x7c44d:$string2: holdermail.txt
  • 0x7c36f:$string3: wallet.dat
  • 0x7c387:$string3: wallet.dat
  • 0x7c39d:$string3: wallet.dat
  • 0x7d789:$string4: Keylog Records
  • 0x7daa1:$string4: Keylog Records
  • 0x7dcbd:$string5: do not script -->
  • 0x7b9e3:$string6: \pidloc.txt
  • 0x7ba71:$string7: BSPLIT
  • 0x7ba81:$string7: BSPLIT
00000002.00000001.241138825.0000000000497000.00000040.00020000.sdmpJoeSecurity_MailPassViewYara detected MailPassViewJoe Security
    00000002.00000001.241138825.0000000000497000.00000040.00020000.sdmpJoeSecurity_HawkEyeYara detected HawkEye KeyloggerJoe Security
      00000002.00000001.241138825.0000000000497000.00000040.00020000.sdmpJoeSecurity_WebBrowserPassViewYara detected WebBrowserPassView password recovery toolJoe Security
        00000002.00000001.241138825.0000000000497000.00000040.00020000.sdmpHawkeyedetect HawkEye in memoryJPCERT/CC Incident Response Group
        • 0x7c0b0:$hawkstr1: HawkEye Keylogger
        • 0x7cedd:$hawkstr1: HawkEye Keylogger
        • 0x7d20c:$hawkstr1: HawkEye Keylogger
        • 0x7d367:$hawkstr1: HawkEye Keylogger
        • 0x7d4ca:$hawkstr1: HawkEye Keylogger
        • 0x7d761:$hawkstr1: HawkEye Keylogger
        • 0x7bc22:$hawkstr2: Dear HawkEye Customers!
        • 0x7d25f:$hawkstr2: Dear HawkEye Customers!
        • 0x7d3b6:$hawkstr2: Dear HawkEye Customers!
        • 0x7d51d:$hawkstr2: Dear HawkEye Customers!
        • 0x7bd43:$hawkstr3: HawkEye Logger Details:
        Click to see the 231 entries

        Unpacked PEs

        31.2.Windows Update.exe.2620000.2.unpackRAT_HawkEyeDetects HawkEye RATKevin Breen <kevin@techanarchy.net>
        • 0xcd713:$key: HawkEyeKeylogger
        • 0xcf97d:$salt: 099u787978786
        • 0xcdd70:$string1: HawkEye_Keylogger
        • 0xcebaf:$string1: HawkEye_Keylogger
        • 0xcf8dd:$string1: HawkEye_Keylogger
        • 0xce145:$string2: holdermail.txt
        • 0xce165:$string2: holdermail.txt
        • 0xce087:$string3: wallet.dat
        • 0xce09f:$string3: wallet.dat
        • 0xce0b5:$string3: wallet.dat
        • 0xcf4a1:$string4: Keylog Records
        • 0xcf7b9:$string4: Keylog Records
        • 0xcf9d5:$string5: do not script -->
        • 0xcd6fb:$string6: \pidloc.txt
        • 0xcd789:$string7: BSPLIT
        • 0xcd799:$string7: BSPLIT
        31.2.Windows Update.exe.2620000.2.unpackJoeSecurity_MailPassViewYara detected MailPassViewJoe Security
          31.2.Windows Update.exe.2620000.2.unpackJoeSecurity_HawkEyeYara detected HawkEye KeyloggerJoe Security
            31.2.Windows Update.exe.2620000.2.unpackJoeSecurity_WebBrowserPassViewYara detected WebBrowserPassView password recovery toolJoe Security
              31.2.Windows Update.exe.2620000.2.unpackHawkeyedetect HawkEye in memoryJPCERT/CC Incident Response Group
              • 0xcddc8:$hawkstr1: HawkEye Keylogger
              • 0xcebf5:$hawkstr1: HawkEye Keylogger
              • 0xcef24:$hawkstr1: HawkEye Keylogger
              • 0xcf07f:$hawkstr1: HawkEye Keylogger
              • 0xcf1e2:$hawkstr1: HawkEye Keylogger
              • 0xcf479:$hawkstr1: HawkEye Keylogger
              • 0xcd93a:$hawkstr2: Dear HawkEye Customers!
              • 0xcef77:$hawkstr2: Dear HawkEye Customers!
              • 0xcf0ce:$hawkstr2: Dear HawkEye Customers!
              • 0xcf235:$hawkstr2: Dear HawkEye Customers!
              • 0xcda5b:$hawkstr3: HawkEye Logger Details: