Analysis

  • max time kernel
    120s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    30-01-2022 15:59

General

  • Target

    21f6d76a335c8c98e7d27e42f77c8bd167e79a02914cc4c7ea49c3600c48e57a.dll

  • Size

    300KB

  • MD5

    a10379c50615514343a479c964554c37

  • SHA1

    c292f39617bee5f26ab76db955851c78d1b26e9e

  • SHA256

    21f6d76a335c8c98e7d27e42f77c8bd167e79a02914cc4c7ea49c3600c48e57a

  • SHA512

    5241b736ba45b0e23f45f62a09a817c940e85d0a62bf4dd2943d9c81fdade4c3038bcc96d4c5f2d2a9ee1797eaf90d4d9541a0d6699950e413fc4ed1411174d9

Malware Config

Extracted

Family

squirrelwaffle

C2

http://hutraders.com/0eeUtmJf8O

http://goodartishard.com/0JXDM9kMwx

http://now.byteinsure.com/tnjUrmlhN

http://asceaub.com/Xl8UCLSU

http://colchonesmanzur.com/GjVgBnKaNIC

http://sistemasati.com/0SzGNkx6P

http://maldivehost.net/zLIisQRWZI9

http://lrdgon.org/l7r96tjAJ

http://binnawaz.com.pk/jhSZGWS76C

http://fhstorse.com/vJlgdjJnpIop

Signatures

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

    SquirrelWaffle.

  • Squirrelwaffle Payload 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\21f6d76a335c8c98e7d27e42f77c8bd167e79a02914cc4c7ea49c3600c48e57a.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1540
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\21f6d76a335c8c98e7d27e42f77c8bd167e79a02914cc4c7ea49c3600c48e57a.dll,#1
      2⤵
        PID:1780

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1780-55-0x00000000769D1000-0x00000000769D3000-memory.dmp

      Filesize

      8KB

    • memory/1780-56-0x0000000074E70000-0x0000000074F4F000-memory.dmp

      Filesize

      892KB

    • memory/1780-57-0x00000000000B0000-0x00000000000B1000-memory.dmp

      Filesize

      4KB

    • memory/1780-59-0x0000000074E70000-0x0000000074F4F000-memory.dmp

      Filesize

      892KB

    • memory/1780-58-0x0000000074E70000-0x0000000074E80000-memory.dmp

      Filesize

      64KB