Overview

overview

10

Static

static

www2.bin.dll

windows11_x64

10

www2.bin.dll

windows10_x64

10

www2.bin.dll

windows10_x64

10

Analysis

  • max time kernel
    1778s
  • max time network
    1781s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    24/09/2021, 14:21

Sharing

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General

  • Target
    www2.bin.dll
  • Size 334KB
  • Sample210924-rpcsdshca9
  • SHA256 671f477c3039786c5f3553760377be03b91bfb66f31ba9370ed2193192cf5b4e
  • MD5 SHA1 SHA512
Score
10/10
squirrelwaffledownloader

Malware Config

Extracted

Family

  • squirrelwaffle

C2

  • spiritofprespa.com/9783Tci2SGF6

  • amjsys.com/RIZszf8vR

  • hrms.prodigygroupindia.com/SKyufGZV

  • centralfloridaasphalt.com/GCN0FChS

  • jhehosting.com/rUuKheB7

  • shoeclearanceoutlet.co.uk/46awDTJjI4l

  • kmslogistik.com/aS1mjTkJIy

  • bartek-lenart.pl/1bWJ57V9vx

  • voip.voipcallhub.com/ZVmfdGHs4T

  • mercyfoundationcio.org/XF9aQrXnakeG

  • key4net.com/a8A2kcc1J

  • chaturanga.groopy.com/mxN3lxZoVApc

  • voipcallhub.com/ilGht5r26

  • ems.prodigygroupindia.com/v5RvVJTz

  • novamarketing.com.pk/k8l36uus

  • lenartsa.webd.pro/fz16DjmKmHtl

  • lead.jhinfotech.co/YERjiAMaupaz

Attributes
  • blocklist

    94.46.179.80

    206.189.205.251

    88.242.66.45

    85.75.110.214

    87.104.3.136

    207.244.91.171

    49.230.88.160

    91.149.252.75

    91.149.252.88

    92.211.109.152

    178.0.250.168

    88.69.16.230

    95.223.77.160

    99.234.62.23

    2.206.105.223

    84.222.8.201

    89.183.239.142

    5.146.132.101

    77.7.60.154

    45.41.106.122

    45.74.72.13

    74.58.152.123

    88.87.68.197

    211.107.25.121

    109.70.100.25

    185.67.82.114

    207.102.138.19

    204.101.161.14

    193.128.108.251

    111.7.100.17

Signatures

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

    SquirrelWaffle.

    downloadersquirrelwaffle
  • squirrelwaffle 2 IoCs

    Squirrelwaffle Payload

  • Blocklisted process makes network request 64 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\www2.bin.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1828
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\www2.bin.dll,#1
      2⤵
      • Blocklisted process makes network request
      PID:1964

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1964-117-0x00000000734F0000-0x0000000073552000-memory.dmp
        Download

        memory/1964-116-0x00000000734F0000-0x0000000073501000-memory.dmp
        Download

        memory/1964-118-0x00000000011D0000-0x00000000011D1000-memory.dmp
        Download