Analysis

  • max time kernel
    136s
  • max time network
    126s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    31/03/2021, 03:50

General

  • Target
    document-392664139.xlsm
  • Size 105KB
  • Sample210331-t12b2le1bj
  • SHA256 82e46932e3e513ebee488786cc12a1840ec9c2e83dc907f47c82f3e40ba8053e
  • MD5 SHA1 SHA512

Malware Config

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 6 IoCs
  • Loads dropped DLL 3 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 6 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 10 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\document-392664139.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:504
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\ksjvoefv.skd,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:3116
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\ksjvoefv.skd1,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:1852
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\ksjvoefv.skd2,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:2764
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\ksjvoefv.skd3,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:2448
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\ksjvoefv.skd4,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:1268

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/504-6-0x00007FFC7E0E0000-0x00007FFC7E0F0000-memory.dmp

        memory/504-2-0x00007FFC7E0E0000-0x00007FFC7E0F0000-memory.dmp

        memory/504-5-0x00007FFCA1720000-0x00007FFCA1D57000-memory.dmp

        memory/504-4-0x00007FFC7E0E0000-0x00007FFC7E0F0000-memory.dmp

        memory/504-3-0x00007FFC7E0E0000-0x00007FFC7E0F0000-memory.dmp

        memory/3116-10-0x00000226B4E80000-0x00000226B4E87000-memory.dmp