Analysis

  • max time kernel
    79s
  • max time network
    126s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    07/12/2021, 04:13

General

  • Target
    ca.dll
  • Size 1.7MB
  • Sample211207-es72gsage2
  • SHA256 f0b6c677bac2de611e0866e849cebd64ec5454885fdd7be5bf0c1c5a17846e3a
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • zloader

Botnet
  • return

Campaign
  • return

C2
  • https://asdfghdsajkl.com/gate.php

  • https://lkjhgfgsdshja.com/gate.php

  • https://kjdhsasghjds.com/gate.php

  • https://kdjwhqejqwij.com/gate.php

  • https://iasudjghnasd.com/gate.php

  • https://daksjuggdhwa.com/gate.php

  • https://dkisuaggdjhna.com/gate.php

  • https://eiqwuggejqw.com/gate.php

  • https://dquggwjhdmq.com/gate.php

  • https://djshggadasj.com/gate.php

Attributes
  • build_id

    157

rc4.plain
rsa_pubkey.plain

Signatures

  • Zloader, Terdot, DELoader, ZeusSphinx

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\ca.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3520
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\ca.dll,#1
      2⤵
        PID:3996
        • C:\Windows\SysWOW64\msiexec.exe
          msiexec.exe
          3⤵
            PID:1924

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            memory/1924-121-0x0000000000400000-0x0000000000426000-memory.dmp

            memory/1924-123-0x0000000000100000-0x0000000000101000-memory.dmp

            memory/1924-124-0x0000000000100000-0x0000000000101000-memory.dmp

            memory/1924-125-0x0000000000400000-0x0000000000426000-memory.dmp

            memory/3996-119-0x00000000001E0000-0x00000000001E1000-memory.dmp

            memory/3996-120-0x0000000010000000-0x00000000101C8000-memory.dmp