Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/05/2026, 17:59

General

  • Target
    tmpwdzres4w.dll
  • Size 452KB
  • Sample260522-wkpnlsct2j
  • SHA256 bc0b57f04efe4239fcc02f049c97016c653c963de8cbe45bcf9449cd16919f08
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • zloader

Botnet
  • goosdoc

Campaign
  • retcrypt

C2
  • http://wmwifbajxxbcxmucxmlc.com/post.php

  • http://pwkqhdgytsshkoibaake.com/post.php

  • http://snnmnkxdhflwgthqismb.com/post.php

  • http://iawfqecrwohcxnhwtofa.com/post.php

  • http://nlbmfsyplohyaicmxhum.com/post.php

  • http://fvqlkgedqjiqgapudkgq.com/post.php

  • http://cmmxhurildiigqghlryq.com/post.php

  • http://nmqsmbiabjdnuushksas.com/post.php

  • http://fyratyubvflktyyjiqgq.com/post.php

Attributes
  • build_id

    117

rc4.plain

Signatures

  • Family: Zloader, Terdot, DELoader, ZeusSphinx

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

  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • 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\tmpwdzres4w.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4860
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmpwdzres4w.dll,#1
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4576
      • C:\Windows\SysWOW64\msiexec.exe
        msiexec.exe
        3⤵
        • Badlisted process makes network request
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:4824

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4576-0-0x0000000010068000-0x000000001006B000-memory.dmp

        memory/4576-1-0x0000000010000000-0x0000000010F81000-memory.dmp

        memory/4576-2-0x0000000010000000-0x0000000010F81000-memory.dmp

        memory/4576-3-0x0000000010000000-0x0000000010F81000-memory.dmp

        memory/4576-4-0x0000000010068000-0x000000001006B000-memory.dmp

        memory/4576-12-0x0000000010000000-0x0000000010F81000-memory.dmp

        memory/4824-9-0x0000000000F20000-0x0000000000F54000-memory.dmp

        memory/4824-11-0x0000000000F20000-0x0000000000F54000-memory.dmp

        memory/4824-14-0x0000000000F20000-0x0000000000F54000-memory.dmp

        memory/4824-15-0x0000000000F20000-0x0000000000F54000-memory.dmp