Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    19-07-2020 19:32

General

  • Target

    zloader 2_1.0.17.0.vir.dll

  • Size

    111KB

  • MD5

    e3564138588cba04c873bd054458f8b9

  • SHA1

    157ec7421e1333b714d01a750b6d5d6517a92c45

  • SHA256

    e3932ab83bc05de2e91d321c4d479ff1aa3d10fdbd91e1687c80cc0ec88270e8

  • SHA512

    2a2e8ce45a928bcffdb40ebf6559c1f071bb3feccfd9cfe355e593acb559ecf84858cf4474708d311317ab08b3f981eba7c8b80dceae973839a0eec9049665c8

Malware Config

Extracted

Family

zloader

Botnet

DLLobnova

Campaign

1017

C2

https://fdsjfjdsfjdsjfdjsfh.com/gate.php

https://fdsjfjdsfjdsdsjajjs.com/gate.php

https://idisaudhasdhasdj.com/gate.php

https://dsjdjsjdsadhasdas.com/gate.php

https://dsdjfhdsufudhjas.com/gate.php

https://dsdjfhdsufudhjas.info/gate.php

https://fdsjfjdsfjdsdsjajjs.info/gate.php

https://idisaudhasdhasdj.info/gate.php

rc4.plain

Signatures

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Blacklisted process makes network request 12 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Zloader, Terdot, DELoader, ZeusSphinx

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

  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.0.17.0.vir.dll",#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1400
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.0.17.0.vir.dll",#1
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1404
      • C:\Windows\SysWOW64\msiexec.exe
        msiexec.exe
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        • Blacklisted process makes network request
        • Adds Run key to start application
        • Modifies system certificate store
        PID:1780

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1404-0-0x0000000000000000-mapping.dmp
  • memory/1780-1-0x00000000000D0000-0x00000000000F1000-memory.dmp
    Filesize

    132KB

  • memory/1780-2-0x0000000000100000-0x0000000000101000-memory.dmp
    Filesize

    4KB

  • memory/1780-3-0x00000000000D0000-0x00000000000F1000-memory.dmp
    Filesize

    132KB

  • memory/1780-4-0x0000000000000000-mapping.dmp