Overview

overview

10

Static

static

8

inv_281.xls

windows7_x64

6

inv_281.xls

windows10_x64

10

Analysis

  • max time kernel
    137s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    25/06/2020, 06:56

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General

  • Target
    inv_281.xls
  • Size 283KB
  • Sample200625-e176xkzzea
  • SHA256 815d71524ed41e28a38222c821ce848ae6e6b925c0ea620d5bdc1aa66e58fa73
  • MD5 SHA1 SHA512
Score
10/10
trojanbotnetzloader

Malware Config

Extracted

Family

  • zloader

Botnet

  • id1

Campaign

  • spam

C2

  • https://axisbasis.xyz/data.php

  • Ts72YjsjO5TghE6m

  • eX�A�ץ�K8�z�d�or�����"t��r�҂.�ߨ=��FE�hI�j��En�PsO��<��M �KN��;4�Y �8��\ �q������8Gp�;�pm!g

rc4.plain

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Zloader, Terdot, DELoader, ZeusSphinx

    Zloader is a malware strain that was initially discovered back in August 2015.

    trojanbotnetzloader
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 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\inv_281.xls"
    1⤵
    • Checks processor information in registry
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    PID:2536
    • C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\MWqFreF\baDkCnr\cMtvRtx.dll,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1824
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\MWqFreF\baDkCnr\cMtvRtx.dll,DllRegisterServer
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        • Loads dropped DLL
        PID:3504
        • C:\Windows\SysWOW64\msiexec.exe
          msiexec.exe
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1008

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        memory/1008-4-0x00000000005D0000-0x00000000005FC000-memory.dmp
        Download