Analysis

  • max time kernel
    149s
  • max time network
    118s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    22/05/2026, 18:47

General

  • Target
    tmpdwst3s7a.dll
  • Size 647KB
  • Sample260522-xfla3adv2q
  • SHA256 b580afe615e4e13cffbcd130379521dcfdd89c2b36a0ab1d4b5fef98814b141e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • zloader

Botnet
  • bot5

Campaign
  • bot5

C2
  • https://militanttra.at/owg.php

Attributes
  • build_id

    11

rc4.plain

Signatures

  • Family: Zloader, Terdot, DELoader, ZeusSphinx

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

  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmpdwst3s7a.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2204
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmpdwst3s7a.dll,#1
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3888
      • C:\Windows\SysWOW64\msiexec.exe
        msiexec.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:4816

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        memory/3888-0-0x0000000002260000-0x0000000002261000-memory.dmp

        memory/3888-1-0x0000000075170000-0x0000000075311000-memory.dmp

        memory/3888-2-0x0000000075170000-0x0000000075311000-memory.dmp

        memory/3888-3-0x0000000002260000-0x0000000002261000-memory.dmp

        memory/3888-8-0x0000000075170000-0x0000000075311000-memory.dmp

        memory/4816-7-0x0000000000450000-0x0000000000487000-memory.dmp

        memory/4816-10-0x0000000000450000-0x0000000000487000-memory.dmp

        memory/4816-11-0x0000000000450000-0x0000000000487000-memory.dmp

        memory/4816-12-0x0000000000450000-0x0000000000487000-memory.dmp