Analysis

  • max time kernel
    69s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    31/03/2021, 03:50

General

  • Target
    document-1073531059.xlsm
  • Size 105KB
  • Sample210331-xg6jxp47bs
  • SHA256 f31dbf377284905c8a02119127267d7ae7bb4e9bb66f77b627648e3a7710b747
  • 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-1073531059.xlsm
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\ksjvoefv.skd,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:848
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\ksjvoefv.skd1,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:660
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\ksjvoefv.skd2,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:1760
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\ksjvoefv.skd3,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:1680
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32 ..\ksjvoefv.skd4,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:516
      • 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:1028

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/848-7-0x00000000766F1000-0x00000000766F3000-memory.dmp

        memory/1028-22-0x00000000001A0000-0x00000000001A7000-memory.dmp

        memory/1740-2-0x000000002F7F1000-0x000000002F7F4000-memory.dmp

        memory/1740-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1740-3-0x00000000715E1000-0x00000000715E3000-memory.dmp

        memory/1764-5-0x000007FEF63D0000-0x000007FEF664A000-memory.dmp