Overview

overview

10

Static

static

6

killar.bin.exe

windows7_x64

10

killar.bin.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    20/10/2020, 06:45

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General

  • Target
    killar.bin.exe
  • Size 9.1MB
  • Sample201020-6mhhwl4366
  • SHA256 43c222eea7f1e367757e587b13bf17019f29bd61c07d20cbee14c4d66d43a71f
  • MD5 SHA1 SHA512
Score
10/10
ransomware

Malware Config

Extracted

Path

  • C:\Users\Admin\Desktop\ABOUT_UR_FILES.txt

Ransom Note
  • Your important files are encrypted, your access to them has been revoked until you pay me $80 in Bitcoin (BTC). Once you have sent $80 worth of Bitcoin to the following wallet address: 1LthWWSd82dKddmHwqhBv8XHiCYyUZqhmA Email me at [email protected] & I will send you a tool to decrypt the files and a tutorial on how to use said tool. If you don't know how to buy Bitcoin, read this: https://www.bitcoin.com/get-started/how-do-i-easily-buy-and-sell-bitcoin Sincerely, Agent W
Wallets

  • 1LthWWSd82dKddmHwqhBv8XHiCYyUZqhmA

URLs

  • https://www.bitcoin.com/get-started/how-do-i-easily-buy-and-sell-bitcoin

Signatures

  • Modifies extensions of user files 4 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Drops desktop.ini file(s) 15 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\killar.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\killar.bin.exe"
    1⤵
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Suspicious use of WriteProcessMemory
    PID:3108
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks.exe /create /sc minute /mo 3 /tn "Internet Explorer Error Handling" /tr %APPDATA%\Byxor\polisen.exe
      2⤵
      • Creates scheduled task(s)
      PID:1452

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3108-0-0x00000000003A0000-0x0000000000CE9000-memory.dmp
        Download