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Windows Analysis Report


General Information

Sample Name:file.exe
Analysis ID:715158


Range:0 - 100


Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Yara detected Nymaim
Antivirus detection for URL or domain
Multi AV Scanner detection for dropped file
Binary is likely a compiled AutoIt script file
Machine Learning detection for sample
May check the online IP address of the machine
C2 URLs / IPs found in malware configuration
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
One or more processes crash
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)
JA3 SSL client fingerprint seen in connection with other malware
Found dropped PE file which has not been started or loaded
PE file contains executable resources (Code or Archives)
IP address seen in connection with other malware
Downloads executable code via HTTP
Enables debug privileges
Drops files with a non-matching file extension (content does not match file extension)
Sample file is different than original file name gathered from version info
Drops PE files
Uses a known web browser user agent for HTTP communication
Checks if the current process is being debugged
Binary contains a suspicious time stamp
Uses taskkill to terminate processes
Creates a process in suspended mode (likely to inject code)


  • System is w10x64
  • file.exe (PID: 6136 cmdline: C:\Users\user\Desktop\file.exe MD5: 526FDE9E61B1B4835885973331FA1616)
    • WerFault.exe (PID: 6120 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 6136 -s 532 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • WerFault.exe (PID: 3016 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 6136 -s 700 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • WerFault.exe (PID: 4728 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 6136 -s 700 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • WerFault.exe (PID: 4156 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 6136 -s 720 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • WerFault.exe (PID: 2140 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 6136 -s 776 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • WerFault.exe (PID: 4708 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 6136 -s 868 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • WerFault.exe (PID: 5928 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 6136 -s 880 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • WerFault.exe (PID: 1680 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 6136 -s 976 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • WerFault.exe (PID: 1324 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 6136 -s 1268 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • cmd.exe (PID: 5144 cmdline: C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\user\AppData\Local\Temp\gVbgwXdNtgMn\Cleaner.exe MD5: F3BDBE3BB6F734E357235F4D5898582D)
      • conhost.exe (PID: 5112 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
      • Cleaner.exe (PID: 4628 cmdline: "C:\Users\user\AppData\Local\Temp\gVbgwXdNtgMn\Cleaner.exe" MD5: 04514BD4962F7D60679434E0EBE49184)
    • WerFault.exe (PID: 5216 cmdline: C:\Windows\SysWOW64\WerFault.exe -u -p 6136 -s 1556 MD5: 9E2B8ACAD48ECCA55C0230D63623661B)
    • cmd.exe (PID: 6044 cmdline: "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\user\Desktop\file.exe" & exit MD5: F3BDBE3BB6F734E357235F4D5898582D)
      • conhost.exe (PID: 6060 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
      • taskkill.exe (PID: 6080 cmdline: taskkill /im "file.exe" /f MD5: 15E2E0ACD891510C6268CB8899F2A1A1)
  • cleanup
{"C2 addresses": ["", ""]}
00000000.00000000.286250062.00000000021D0000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_NymaimYara detected NymaimJoe Security
    • 0x30d:$a: 0C 8B 45 F0 89 45 C8 8B 45 C8 8B 40 3C 8B 4D F0 8D 44 01 04 89
    00000000.00000000.279758880.0000000000400000.00000040.00000001.01000000.00000003.sdmpJoeSecurity_NymaimYara detected NymaimJoe Security
      • 0x1028:$a: 55 8B EC 8B 45 14 56 57 8B 7D 08 33 F6 89 47 0C 39 75 10 76 15 8B
      • 0x1028:$a: 55 8B EC 8B 45 14 56 57 8B 7D 08 33 F6 89 47 0C 39 75 10 76 15 8B
      Click to see the 60 entries
      0.0.file.exe.21d0e67.30.unpackJoeSecurity_NymaimYara detected NymaimJoe Security
        0.0.file.exe.21d0e67.18.raw.unpackJoeSecurity_NymaimYara detected NymaimJoe Security
          0.0.file.exe.400000.13.unpackJoeSecurity_NymaimYara detected NymaimJoe Security
            0.0.file.exe.400000.7.raw.unpackJoeSecurity_NymaimYara detected NymaimJoe Security
              0.0.file.exe.400000.23.unpackJoeSecurity_NymaimYara detected NymaimJoe Security