Overview

overview

8

Static

static

145631fadf...4f.exe

windows7-x64

8

145631fadf...4f.exe

windows10-2004-x64

3

Analysis

  • max time kernel
    150s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    29/11/2022, 10:44

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General

  • Target

    145631fadfc4a90fe9aa4b84e2afd967915115ba348bc1153fe224db5873194f.exe

  • Size

    448KB

  • MD5

    86940503acac72c15d8c6239df0c812e

  • SHA1

    c025e25dbba9bf38d3beec1c8e30beed904f6b37

  • SHA256

    145631fadfc4a90fe9aa4b84e2afd967915115ba348bc1153fe224db5873194f

  • SHA512

    421ed4ba14ce2aef5ad114132b6d9f083c651bb78b38d0efca55cf991d1f4dfc712158909408b9c5c2ce8ebb9f89286c88405c4ae0247a2ccc25612782f25ff2

  • SSDEEP

    12288:V4x37B0pGufmL5MZZWyan1sVsz/YM5m+J6t5tz:2x37mLmLOLWtn1r5hEtD

Score
8/10
persistence

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Kills process with taskkill 1 IoCs
    evasion
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 46 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\145631fadfc4a90fe9aa4b84e2afd967915115ba348bc1153fe224db5873194f.exe
    "C:\Users\Admin\AppData\Local\Temp\145631fadfc4a90fe9aa4b84e2afd967915115ba348bc1153fe224db5873194f.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1760
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 1760 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\145631fadfc4a90fe9aa4b84e2afd967915115ba348bc1153fe224db5873194f.exe" & start C:\Users\Admin\AppData\Local\knopdrcn.exe -f
      2⤵
      • Deletes itself
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2040
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /pid 1760
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1236
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 3 127.1
        3⤵
        • Runs ping.exe
        PID:268
      • C:\Users\Admin\AppData\Local\knopdrcn.exe
        C:\Users\Admin\AppData\Local\knopdrcn.exe -f
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:1640

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\knopdrcn.exe
    Filesize

    448KB

    MD5

    86940503acac72c15d8c6239df0c812e

    SHA1

    c025e25dbba9bf38d3beec1c8e30beed904f6b37

    SHA256

    145631fadfc4a90fe9aa4b84e2afd967915115ba348bc1153fe224db5873194f

    SHA512

    421ed4ba14ce2aef5ad114132b6d9f083c651bb78b38d0efca55cf991d1f4dfc712158909408b9c5c2ce8ebb9f89286c88405c4ae0247a2ccc25612782f25ff2

    Download Submit

  • C:\Users\Admin\AppData\Local\knopdrcn.exe
    Filesize

    448KB

    MD5

    86940503acac72c15d8c6239df0c812e

    SHA1

    c025e25dbba9bf38d3beec1c8e30beed904f6b37

    SHA256

    145631fadfc4a90fe9aa4b84e2afd967915115ba348bc1153fe224db5873194f

    SHA512

    421ed4ba14ce2aef5ad114132b6d9f083c651bb78b38d0efca55cf991d1f4dfc712158909408b9c5c2ce8ebb9f89286c88405c4ae0247a2ccc25612782f25ff2

    Download Submit

  • \Users\Admin\AppData\Local\knopdrcn.exe
    Filesize

    448KB

    MD5

    86940503acac72c15d8c6239df0c812e

    SHA1

    c025e25dbba9bf38d3beec1c8e30beed904f6b37

    SHA256

    145631fadfc4a90fe9aa4b84e2afd967915115ba348bc1153fe224db5873194f

    SHA512

    421ed4ba14ce2aef5ad114132b6d9f083c651bb78b38d0efca55cf991d1f4dfc712158909408b9c5c2ce8ebb9f89286c88405c4ae0247a2ccc25612782f25ff2

    Download Submit

  • \Users\Admin\AppData\Local\knopdrcn.exe
    Filesize

    448KB

    MD5

    86940503acac72c15d8c6239df0c812e

    SHA1

    c025e25dbba9bf38d3beec1c8e30beed904f6b37

    SHA256

    145631fadfc4a90fe9aa4b84e2afd967915115ba348bc1153fe224db5873194f

    SHA512

    421ed4ba14ce2aef5ad114132b6d9f083c651bb78b38d0efca55cf991d1f4dfc712158909408b9c5c2ce8ebb9f89286c88405c4ae0247a2ccc25612782f25ff2

    Download Submit

  • \Users\Admin\AppData\Local\knopdrcn.exe
    Filesize

    448KB

    MD5

    86940503acac72c15d8c6239df0c812e

    SHA1

    c025e25dbba9bf38d3beec1c8e30beed904f6b37

    SHA256

    145631fadfc4a90fe9aa4b84e2afd967915115ba348bc1153fe224db5873194f

    SHA512

    421ed4ba14ce2aef5ad114132b6d9f083c651bb78b38d0efca55cf991d1f4dfc712158909408b9c5c2ce8ebb9f89286c88405c4ae0247a2ccc25612782f25ff2

    Download Submit

  • memory/1640-67-0x0000000001000000-0x00000000010AA000-memory.dmp

    Filesize

    680KB

    Download

  • memory/1640-68-0x0000000001000000-0x00000000010AA000-memory.dmp

    Filesize

    680KB

    Download

  • memory/1760-56-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

    Download

  • memory/1760-54-0x0000000075931000-0x0000000075933000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1760-57-0x0000000001000000-0x00000000010AA000-memory.dmp

    Filesize

    680KB

    Download