Resubmissions

22/09/2021, 21:28

210922-1bdbfagedm10

22/09/2021, 15:32

210922-sys2eadbb810

Analysis

  • max time kernel
    146s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    22/09/2021, 15:32

General

  • Target
    squiwaf.dll
  • Size 260KB
  • Sample210922-sys2eadbb8
  • SHA256 5582447866948a38cb3d1013759854142cbbdc812de3d821c5d4c151e4ebbe6f
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • squirrelwaffle

C2
  • deanandwilconstruction.com/UXEvfuIlhws

  • arimeto.lv/Nm70oAfwB

  • gitamschool.com/oZbs0Oqw7uv

  • eresourcesmoneymarket.com/JbVwdgaV6l

  • flyershipmanager.com/SGAsORYsywt

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

    109.70.100.25

    185.67.82.114

    207.102.138.19

    204.101.161.14

    193.128.108.251

    111.7.100.17

    111.7.100.16

Signatures

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

    SquirrelWaffle.

  • squirrelwaffle 1 IoCs

    Squirrelwaffle Payload

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\squiwaf.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1124
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\squiwaf.dll,#1
      2⤵
        PID:1256

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1256-54-0x0000000075661000-0x0000000075663000-memory.dmp

          memory/1256-56-0x0000000010000000-0x0000000010044000-memory.dmp

          memory/1256-55-0x00000000001E0000-0x00000000001FE000-memory.dmp