Analysis

  • max time kernel
    147s
  • max time network
    142s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    18-01-2022 19:12

General

  • Target

    31b22b3bfa7d0ca56d5da96fa37279dcfa197f6ab4caf533a51cb8bdcd5d90ec.xlsm

  • Size

    99KB

  • MD5

    5a8fa49e1cd7e07b7ff5e3fcc0377a47

  • SHA1

    ce476bdd4b8dc12cbbc20ecadfc3963b52ccc180

  • SHA256

    31b22b3bfa7d0ca56d5da96fa37279dcfa197f6ab4caf533a51cb8bdcd5d90ec

  • SHA512

    2cc8a654aa02445203e56107e407027b880123b0630724b8ec86162142b954fe25b1d04e0cd66c6d99663becf36513bac4da2ac3cf95b936d9b9198e77bdf415

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://avionxpress.com/lp/T9b1Bga4FdDfP5HI/

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 3 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.

  • 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 12 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\31b22b3bfa7d0ca56d5da96fa37279dcfa197f6ab4caf533a51cb8bdcd5d90ec.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3052
    • C:\Windows\SysWow64\rundll32.exe
      C:\Windows\SysWow64\rundll32.exe ..\ourl.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3924
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\ourl.ocx",DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:948
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Usioyksnyoby\gqqqorwnsylngoh.uln",rxlWHKYNnyi
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:372
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Usioyksnyoby\gqqqorwnsylngoh.uln",DllRegisterServer
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            PID:3708

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/372-282-0x0000000002510000-0x0000000002538000-memory.dmp

    Filesize

    160KB

  • memory/948-273-0x0000000004E00000-0x0000000004E28000-memory.dmp

    Filesize

    160KB

  • memory/948-279-0x0000000005000000-0x0000000005028000-memory.dmp

    Filesize

    160KB

  • memory/948-281-0x0000000005180000-0x00000000051A8000-memory.dmp

    Filesize

    160KB

  • memory/948-275-0x0000000004FA0000-0x0000000004FC8000-memory.dmp

    Filesize

    160KB

  • memory/948-271-0x0000000004D10000-0x0000000004D38000-memory.dmp

    Filesize

    160KB

  • memory/948-268-0x0000000004810000-0x0000000004838000-memory.dmp

    Filesize

    160KB

  • memory/3052-119-0x00007FFD72FE0000-0x00007FFD72FF0000-memory.dmp

    Filesize

    64KB

  • memory/3052-120-0x00007FFD72FE0000-0x00007FFD72FF0000-memory.dmp

    Filesize

    64KB

  • memory/3052-117-0x00007FFD72FE0000-0x00007FFD72FF0000-memory.dmp

    Filesize

    64KB

  • memory/3052-129-0x00007FFD72FE0000-0x00007FFD72FF0000-memory.dmp

    Filesize

    64KB

  • memory/3052-130-0x00007FFD6F570000-0x00007FFD6F580000-memory.dmp

    Filesize

    64KB

  • memory/3052-131-0x00007FFD6F570000-0x00007FFD6F580000-memory.dmp

    Filesize

    64KB

  • memory/3052-118-0x00007FFD72FE0000-0x00007FFD72FF0000-memory.dmp

    Filesize

    64KB

  • memory/3708-284-0x0000000004D20000-0x0000000004D48000-memory.dmp

    Filesize

    160KB