Overview

overview

10

Static

static

226a723ffb...in.exe

windows7_x64

10

226a723ffb...in.exe

windows10_x64

10

Analysis

  • max time kernel
    100s
  • max time network
    69s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    20/11/2020, 02:36

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General

  • Target
    226a723ffb4a91d9950a8b266167c5b354ab0db1dc225578494917fe53867ef2.bin.exe
  • Size 200KB
  • Sample201120-9w7j71xeaj
  • SHA256 226a723ffb4a91d9950a8b266167c5b354ab0db1dc225578494917fe53867ef2
  • MD5 SHA1 SHA512
Score
10/10
mountlockerransomware

Malware Config

Signatures

  • MountLocker Ransomware

    Ransomware family first seen in late 2020, which threatens to leak files if ransom is not paid.

    ransomwaremountlocker
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 4 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Drops desktop.ini file(s) 27 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\226a723ffb4a91d9950a8b266167c5b354ab0db1dc225578494917fe53867ef2.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\226a723ffb4a91d9950a8b266167c5b354ab0db1dc225578494917fe53867ef2.bin.exe"
    1⤵
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3484
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -windowstyle hidden -c $mypid='3484';[System.IO.File]::ReadAllText('C:\Users\Admin\AppData\Local\Temp\~259275796.tmp')|iex
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2768
      • C:\Windows\SysWOW64\vssadmin.exe
        "C:\Windows\system32\vssadmin.exe" delete shadows /all /Quiet
        3⤵
        • Interacts with shadow copies
        PID:700
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\\0F759432.bat" "C:\Users\Admin\AppData\Local\Temp\226a723ffb4a91d9950a8b266167c5b354ab0db1dc225578494917fe53867ef2.bin.exe""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2688
      • C:\Windows\SysWOW64\attrib.exe
        attrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\226a723ffb4a91d9950a8b266167c5b354ab0db1dc225578494917fe53867ef2.bin.exe"
        3⤵
        • Views/modifies file attributes
        PID:1832
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2756

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/2768-7-0x0000000007610000-0x0000000007611000-memory.dmp
        Download

        memory/2768-16-0x0000000008B10000-0x0000000008B11000-memory.dmp
        Download

        memory/2768-9-0x0000000007F40000-0x0000000007F41000-memory.dmp
        Download

        memory/2768-10-0x00000000080F0000-0x00000000080F1000-memory.dmp
        Download

        memory/2768-11-0x0000000007300000-0x0000000007301000-memory.dmp
        Download

        memory/2768-12-0x00000000089F0000-0x00000000089F1000-memory.dmp
        Download

        memory/2768-13-0x00000000087D0000-0x00000000087D1000-memory.dmp
        Download

        memory/2768-15-0x0000000009D10000-0x0000000009D11000-memory.dmp
        Download

        memory/2768-8-0x0000000007DF0000-0x0000000007DF1000-memory.dmp
        Download

        memory/2768-6-0x00000000076D0000-0x00000000076D1000-memory.dmp
        Download

        memory/2768-18-0x0000000009930000-0x0000000009931000-memory.dmp
        Download

        memory/2768-19-0x0000000009630000-0x0000000009631000-memory.dmp
        Download

        memory/2768-20-0x000000000A890000-0x000000000A891000-memory.dmp
        Download

        memory/2768-5-0x0000000004FC0000-0x0000000004FC1000-memory.dmp
        Download

        memory/2768-4-0x0000000073770000-0x0000000073E5E000-memory.dmp
        Download

        memory/3484-2-0x0000000002DB0000-0x0000000002DBF000-memory.dmp
        Download