Analysis

  • max time kernel
    71s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    31/03/2021, 04:00

General

  • Target
    document-393182473.xlsm
  • Size 105KB
  • Sample210331-s1cys6362e
  • SHA256 901d412443099b9ad7e15601a14070e0d4e1268eedc4b536a703348b883ddfa4
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    https://metaflip.io/ds/3003.gif

  • xlm40.dropper

    https://partsapp.com.br/ds/3003.gif

  • xlm40.dropper

    https://columbia.aula-web.net/ds/3003.gif

  • xlm40.dropper

    https://tajushariya.com/ds/3003.gif

  • xlm40.dropper

    https://agenbolatermurah.com/ds/3003.gif

Extracted

Family
  • icedid

Campaign
  • 3717128962

C2
  • usaaforced.fun

Signatures

  • IcedID, BokBot

    IcedID is a banking trojan capable of stealing credentials.

  • Process spawned unexpected child process 5 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • IcedID First Stage Loader 1 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 2 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 15 IoCs
  • Suspicious use of WriteProcessMemory 39 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\document-393182473.xlsm
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1340
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\ksjvoefv.skd,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:1728
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\ksjvoefv.skd1,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:752
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\ksjvoefv.skd2,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:1148
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\ksjvoefv.skd3,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:360
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\ksjvoefv.skd4,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1972
      • C:\Windows\system32\rundll32.exe
        rundll32 ..\ksjvoefv.skd4,DllRegisterServer
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        PID:1112

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1112-24-0x00000000003A0000-0x00000000003A7000-memory.dmp

        memory/1340-2-0x000000002FA61000-0x000000002FA64000-memory.dmp

        memory/1340-5-0x0000000002050000-0x0000000002051000-memory.dmp

        memory/1340-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1340-3-0x00000000718D1000-0x00000000718D3000-memory.dmp

        memory/1540-7-0x000007FEF7D20000-0x000007FEF7F9A000-memory.dmp

        memory/1728-9-0x0000000076691000-0x0000000076693000-memory.dmp