Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-06-2024 19:33

General

  • Target

    causativenesszb.exe

  • Size

    181KB

  • MD5

    0d9f4b56d3f36373f8bf26e8107100b0

  • SHA1

    8516094991d5fe0a4c2cec90e9f54833f1d0a326

  • SHA256

    a6b5435b16903b2c557210a813fdfacc9d4b965d01b05a46a3d2b6c353719e05

  • SHA512

    a313b0219d5248f9995f3b2f70bf30e8e9cf528659e98a4cb53b3ffdc80d1b0c9ee03cc3bc6d3bed36d31801506200a1188c849f551d401b725bd009f6e91c20

  • SSDEEP

    3072:3CmlA+2TGMF85+bkRG32foUP9GmPe97UoSs1urv9zHKipsK/huffqeNntqpKRnHV:SmlV4h8JG3QUzSOwzH6K/hC9tqp6HhNZ

Score
10/10

Malware Config

Extracted

Family

koiloader

C2

http://195.123.224.66/marasmus.php

Attributes
  • payload_url

    https://www.dsestimation.com/wp-content/uploads/2015/10

Signatures

  • KoiLoader

    KoiLoader is a malware loader written in C++.

  • Detects KoiLoader payload 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\causativenesszb.exe
    "C:\Users\Admin\AppData\Local\Temp\causativenesszb.exe"
    1⤵
      PID:2836
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /7
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3292

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2836-0-0x0000000002550000-0x000000000255D000-memory.dmp

      Filesize

      52KB

    • memory/3292-4-0x000001EC3D590000-0x000001EC3D591000-memory.dmp

      Filesize

      4KB

    • memory/3292-5-0x000001EC3D590000-0x000001EC3D591000-memory.dmp

      Filesize

      4KB

    • memory/3292-6-0x000001EC3D590000-0x000001EC3D591000-memory.dmp

      Filesize

      4KB

    • memory/3292-11-0x000001EC3D590000-0x000001EC3D591000-memory.dmp

      Filesize

      4KB

    • memory/3292-16-0x000001EC3D590000-0x000001EC3D591000-memory.dmp

      Filesize

      4KB

    • memory/3292-15-0x000001EC3D590000-0x000001EC3D591000-memory.dmp

      Filesize

      4KB

    • memory/3292-14-0x000001EC3D590000-0x000001EC3D591000-memory.dmp

      Filesize

      4KB

    • memory/3292-13-0x000001EC3D590000-0x000001EC3D591000-memory.dmp

      Filesize

      4KB

    • memory/3292-12-0x000001EC3D590000-0x000001EC3D591000-memory.dmp

      Filesize

      4KB

    • memory/3292-10-0x000001EC3D590000-0x000001EC3D591000-memory.dmp

      Filesize

      4KB