Resubmissions

17-11-2023 10:11

231117-l79xyshg5x 10

09-11-2020 20:51

201109-e7t1r93kmn 10

Analysis

  • max time kernel
    436s
  • max time network
    1161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-11-2023 10:11

General

  • Target

    sustenance.dll

  • Size

    525KB

  • MD5

    d50829ab5499f6ec3a0829515db611d0

  • SHA1

    d6d5ea77c50e01a1472e8ea7dbd1380df65fe0b4

  • SHA256

    c194e82e8a3ada40421b28e668c9135f09f9336732dc31053fc0cebf7be97564

  • SHA512

    104e1e5a50e0928d96cf28c560fbab1006e3cbd049edc661e8512eabee2cc80119e143359a14ff6d6e509c0cd2ea8ef64a137f6010e017a36293485d134a88b9

  • SSDEEP

    6144:CG/nMeCMDNS1wz3YpxG7Y2nwT6ESbgwZQ6gRPhkqNMyHMr+u/B:PfM8DNS1wkb52UNaQ5R5kqytr+u5

Malware Config

Extracted

Family

zloader

Botnet

CAN1

Campaign

VBSDLL5

C2

https://studentsclasses.com/post.php

https://booking-king.com/post.php

Attributes
  • build_id

    39

rc4.plain
rsa_pubkey.plain

Signatures

  • Zloader, Terdot, DELoader, ZeusSphinx

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

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\sustenance.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2804
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\sustenance.dll,#1
      2⤵
        PID:1520
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1520 -s 596
          3⤵
          • Program crash
          PID:3616
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1520 -ip 1520
      1⤵
        PID:2824

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1520-0-0x0000000000D70000-0x0000000000D98000-memory.dmp

        Filesize

        160KB

      • memory/1520-1-0x00000000010B0000-0x00000000010DB000-memory.dmp

        Filesize

        172KB

      • memory/1520-2-0x0000000000D70000-0x0000000000D98000-memory.dmp

        Filesize

        160KB