Overview

overview

10

Static

static

10

2d2d2e39cc...in.dll

windows7_x64

10

2d2d2e39cc...in.dll

windows10_x64

10

Analysis

  • max time kernel
    42s
  • max time network
    41s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    12-05-2021 17:00

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General

  • Target

    2d2d2e39ccae1ff764e6618b5d7636d41ac6e752ce56d69a9acbb9cb1c8183d0.bin.dll

  • Size

    46KB

  • MD5

    75d07587e095647ff8f18479e73831b2

  • SHA1

    5da9c3f4b1db7972cf21d1553562660b289a4c59

  • SHA256

    2d2d2e39ccae1ff764e6618b5d7636d41ac6e752ce56d69a9acbb9cb1c8183d0

  • SHA512

    2e7dc10f3730824029359716b12d29d3b23b19f1d1e0bfd058d1ab05a6c469aae39a13d9c48e602cd262e4ed480d5697b4dc831a68a3f6713b333c643116ef65

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 8 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 WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs
    evasion

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\2d2d2e39ccae1ff764e6618b5d7636d41ac6e752ce56d69a9acbb9cb1c8183d0.bin.dll
    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 WriteProcessMemory
    PID:3896
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -windowstyle hidden -c $mypid='3896';[System.IO.File]::ReadAllText('C:\Users\Admin\AppData\Local\Temp\~259269937.tmp')|iex
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:604
      • C:\Windows\system32\vssadmin.exe
        "C:\Windows\system32\vssadmin.exe" delete shadows /all /Quiet
        3⤵
        • Interacts with shadow copies
        PID:3908
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\\0F74BC02.bat" "C:\Users\Admin\AppData\Local\Temp\2d2d2e39ccae1ff764e6618b5d7636d41ac6e752ce56d69a9acbb9cb1c8183d0.bin.dll""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:252
      • C:\Windows\system32\attrib.exe
        attrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\2d2d2e39ccae1ff764e6618b5d7636d41ac6e752ce56d69a9acbb9cb1c8183d0.bin.dll"
        3⤵
        • Views/modifies file attributes
        PID:2932
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2740

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/604-119-0x000001D27C980000-0x000001D27C981000-memory.dmp

    Filesize

    4KB

    Download

  • memory/604-125-0x000001D27D620000-0x000001D27D621000-memory.dmp

    Filesize

    4KB

    Download

  • memory/604-134-0x000001D27C9F0000-0x000001D27C9F2000-memory.dmp

    Filesize

    8KB

    Download

  • memory/604-135-0x000001D27C9F3000-0x000001D27C9F5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/604-140-0x000001D27C9F6000-0x000001D27C9F8000-memory.dmp

    Filesize

    8KB

    Download