Analysis

  • max time kernel
    138s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27/09/2021, 12:50

General

  • Target
    test1.test.0.dr.dll
  • Size 235KB
  • Sample210927-p3d69shaaj
  • SHA256 6402b33d729c8bb44881747a8f397f4aec408bf5e18b9af6fd86cdfa3f96323b
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • squirrelwaffle

C2
  • acdlimited.com/2u6aW9Pfe

  • jornaldasoficinas.com/ZF8GKIGVDupL

  • orldofjain.com/lMsTA7tSYpe

  • altayaralsudani.net/SSUsPgb7PHgC

  • hoteloaktree.com/QthLWsZsVgb

  • aterwellnessinc.com/U7D0sswwp

  • sirifinco.com/Urbhq9wO50j

  • ordpress17.com/5WG6Z62sKWo

  • mohsinkhanfoundation.com/pcQLeLMbur

  • lendbiz.vn/xj3BhHtMbf

  • geosever.rs/ObHP1CHt

  • nuevainfotech.com/xCNyTjzkoe

  • dadabhoy.pk/m6rQE94U

  • 111

  • sjgrand.lk/zvMYuQqEZj

  • erogholding.com/GFM1QcCFk

  • armordetailing.rs/lgfrZb4Re6WO

  • lefrenchwineclub.com/eRUGdDox

Signatures

  • SquirrelWaffle is a simple downloader written in C++.

    SquirrelWaffle.

  • suricata: ET MALWARE Possible SQUIRRELWAFFLE Server Response

    suricata: ET MALWARE Possible SQUIRRELWAFFLE Server Response

  • suricata: ET MALWARE SQUIRRELWAFFLE Loader Activity (POST)

    suricata: ET MALWARE SQUIRRELWAFFLE Loader Activity (POST)

  • suricata: ET MALWARE SQUIRRELWAFFLE Server Response

    suricata: ET MALWARE SQUIRRELWAFFLE Server Response

  • squirrelwaffle 2 IoCs

    Squirrelwaffle Payload

  • Blocklisted process makes network request 4 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\test1.test.0.dr.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:636
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\test1.test.0.dr.dll,#1
      2⤵
      • Blocklisted process makes network request
      PID:804

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/804-115-0x0000000000310000-0x0000000000311000-memory.dmp

        memory/804-117-0x0000000010000000-0x00000000100D6000-memory.dmp

        memory/804-116-0x0000000010000000-0x0000000010010000-memory.dmp