Analysis

  • max time kernel
    137s
  • max time network
    127s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    31/03/2021, 03:30

General

  • Target
    document-643561196.xlsm
  • Size 105KB
  • Sample210331-6c1yrx1586
  • SHA256 55047f8ff45882f01bc51f9c67d25c6d052e30abc420e9150e30b1d4e962dd66
  • 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 FindShellTrayWindow 2 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-643561196.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4704
    • 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:4000
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\ksjvoefv.skd1,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:4472
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\ksjvoefv.skd2,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:4464
    • 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:4448
    • 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:684

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/4000-10-0x000001EC70800000-0x000001EC70807000-memory.dmp

        memory/4704-2-0x00007FF82F820000-0x00007FF82F830000-memory.dmp

        memory/4704-6-0x00007FF82F820000-0x00007FF82F830000-memory.dmp

        memory/4704-5-0x00007FF852960000-0x00007FF852F97000-memory.dmp

        memory/4704-4-0x00007FF82F820000-0x00007FF82F830000-memory.dmp

        memory/4704-3-0x00007FF82F820000-0x00007FF82F830000-memory.dmp