Analysis

  • max time kernel
    146s
  • max time network
    126s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    09-11-2021 06:19

General

  • Target

    xnfipyy.inf.dll

  • Size

    38KB

  • MD5

    18ff6706dac4cda1c85afa02495f4149

  • SHA1

    a9b70524165713bcb147ca22c95475c091232904

  • SHA256

    4889479cc52b989f745d78a483c62fabaa70e7f078a82a5656c8a454e599bac5

  • SHA512

    d3c2ae6497eeaa323544e72a39d3dfe95a5701054944cf09307cfc2b6e70011ea93035e1523739af3a8b39022b7fe3ca7ebc95493731b4184132f2ae783582d9

Score
10/10

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\readme.txt

Family

magniber

Ransom Note
ALL YOUR DOCUMENTS PHOTOS DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ==================================================================================================== Your files are NOT damaged! Your files are modified only. This modification is reversible. The only 1 way to decrypt your files is to receive the private key and decryption program. Any attempts to restore your files with the third party software will be fatal for your files! ==================================================================================================== To receive the private key and decryption program follow the instructions below: 1. Download "Tor Browser" from https://www.torproject.org/ and install it. 2. In the "Tor Browser" open your personal page here: http://62c4684026f46e107cdujyxylz.w3disbrllt7cfknxuutwevchixw5vbyc4ujvg5cz3u57nryezwqgwnad.onion/dujyxylz Note! This page is available via "Tor Browser" only. ==================================================================================================== Also you can use temporary addresses on your personal page without using "Tor Browser": http://62c4684026f46e107cdujyxylz.wonsre.space/dujyxylz http://62c4684026f46e107cdujyxylz.wheelgo.sbs/dujyxylz http://62c4684026f46e107cdujyxylz.fitsbus.uno/dujyxylz http://62c4684026f46e107cdujyxylz.amlack.quest/dujyxylz Note! These are temporary addresses! They will be available for a limited amount of time!
URLs

http://62c4684026f46e107cdujyxylz.w3disbrllt7cfknxuutwevchixw5vbyc4ujvg5cz3u57nryezwqgwnad.onion/dujyxylz

http://62c4684026f46e107cdujyxylz.wonsre.space/dujyxylz

http://62c4684026f46e107cdujyxylz.wheelgo.sbs/dujyxylz

http://62c4684026f46e107cdujyxylz.fitsbus.uno/dujyxylz

http://62c4684026f46e107cdujyxylz.amlack.quest/dujyxylz

Signatures

  • Magniber Ransomware

    Ransomware family widely seen in Asia being distributed by the Magnitude exploit kit.

  • Process spawned unexpected child process 3 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 9 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Suspicious use of SetThreadContext 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies registry class 64 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\xnfipyy.inf.dll,#1
    1⤵
    • Modifies extensions of user files
    • Suspicious use of SetThreadContext
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3996
    • C:\Windows\system32\notepad.exe
      notepad.exe C:\Users\Public\readme.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:2140
    • C:\Windows\system32\cmd.exe
      cmd /c "start http://62c4684026f46e107cdujyxylz.wonsre.space/dujyxylz^&1^&28731418^&60^&271^&2215063"
      2⤵
      • Checks computer location settings
      PID:952
    • C:\Windows\system32\wbem\wmic.exe
      C:\Windows\system32\wbem\wmic process call create "vssadmin.exe Delete Shadows /all /quiet"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2340
    • C:\Windows\system32\cmd.exe
      cmd.exe /c "%SystemRoot%\system32\wbem\wmic process call create "cmd /c computerdefaults.exe""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1156
      • C:\Windows\system32\wbem\WMIC.exe
        C:\Windows\system32\wbem\wmic process call create "cmd /c computerdefaults.exe"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1884
    • C:\Windows\system32\cmd.exe
      cmd.exe /c "%SystemRoot%\system32\wbem\wmic process call create "cmd /c computerdefaults.exe""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2264
      • C:\Windows\system32\wbem\WMIC.exe
        C:\Windows\system32\wbem\wmic process call create "cmd /c computerdefaults.exe"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1080
  • C:\Windows\system32\cmd.exe
    cmd /c computerdefaults.exe
    1⤵
    • Process spawned unexpected child process
    • Suspicious use of WriteProcessMemory
    PID:2712
    • C:\Windows\system32\ComputerDefaults.exe
      computerdefaults.exe
      2⤵
        PID:824
    • C:\Windows\system32\cmd.exe
      cmd /c computerdefaults.exe
      1⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:2156
      • C:\Windows\system32\ComputerDefaults.exe
        computerdefaults.exe
        2⤵
          PID:3208
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe Delete Shadows /all /quiet
        1⤵
        • Process spawned unexpected child process
        • Interacts with shadow copies
        PID:2756
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
          PID:3404
        • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
          "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
          1⤵
          • Drops file in Windows directory
          • Modifies Internet Explorer settings
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:4012
        • C:\Windows\system32\browser_broker.exe
          C:\Windows\system32\browser_broker.exe -Embedding
          1⤵
          • Modifies Internet Explorer settings
          PID:2468
        • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
          "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
          1⤵
          • Modifies registry class
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2960
        • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
          "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
          1⤵
          • Drops file in Windows directory
          • Modifies Internet Explorer settings
          • Modifies registry class
          PID:2724
        • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
          "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
          1⤵
          • Modifies registry class
          PID:2768

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Public\readme.txt

          MD5

          e77eb8b3514c271a603f3837ce58c5b8

          SHA1

          e8697207ae183d1b0a10c509a0fdd3d61b069ebe

          SHA256

          36fc3611e8ac4d511c034545f2cec1cc85887c58dddba978879366a2385fe0a9

          SHA512

          2690e4efda7df9ba1501b1a675a1118ddcc42fbccd749a61338f504cfaf9aebe03bdc31197d7067da92152c4388cfed61388758214cca4934f9f92ebfb37817d

        • memory/824-142-0x0000000000000000-mapping.dmp

        • memory/952-134-0x0000000000000000-mapping.dmp

        • memory/1080-140-0x0000000000000000-mapping.dmp

        • memory/1156-137-0x0000000000000000-mapping.dmp

        • memory/1884-139-0x0000000000000000-mapping.dmp

        • memory/2140-132-0x0000000000000000-mapping.dmp

        • memory/2264-136-0x0000000000000000-mapping.dmp

        • memory/2340-135-0x0000000000000000-mapping.dmp

        • memory/3208-141-0x0000000000000000-mapping.dmp

        • memory/3788-144-0x0000027087A70000-0x0000027087A71000-memory.dmp

          Filesize

          4KB

        • memory/3788-143-0x0000027087B10000-0x0000027087B18000-memory.dmp

          Filesize

          32KB

        • memory/3996-124-0x0000019618B40000-0x0000019618B41000-memory.dmp

          Filesize

          4KB

        • memory/3996-125-0x0000019618B50000-0x0000019618B51000-memory.dmp

          Filesize

          4KB

        • memory/3996-130-0x000001961C670000-0x000001961C671000-memory.dmp

          Filesize

          4KB

        • memory/3996-129-0x0000019619140000-0x0000019619141000-memory.dmp

          Filesize

          4KB

        • memory/3996-128-0x0000019619130000-0x0000019619131000-memory.dmp

          Filesize

          4KB

        • memory/3996-127-0x0000019619120000-0x0000019619121000-memory.dmp

          Filesize

          4KB

        • memory/3996-126-0x0000019619110000-0x0000019619111000-memory.dmp

          Filesize

          4KB

        • memory/3996-131-0x000001961C680000-0x000001961C685000-memory.dmp

          Filesize

          20KB

        • memory/3996-138-0x000001961E1A0000-0x000001961E1A1000-memory.dmp

          Filesize

          4KB

        • memory/3996-119-0x0000019618920000-0x0000019618921000-memory.dmp

          Filesize

          4KB

        • memory/3996-123-0x0000019618B30000-0x0000019618B31000-memory.dmp

          Filesize

          4KB

        • memory/3996-122-0x0000019618B20000-0x0000019618B21000-memory.dmp

          Filesize

          4KB

        • memory/3996-118-0x0000019618BA0000-0x000001961910D000-memory.dmp

          Filesize

          5.4MB

        • memory/3996-121-0x0000019618B10000-0x0000019618B11000-memory.dmp

          Filesize

          4KB

        • memory/3996-120-0x0000019618B00000-0x0000019618B01000-memory.dmp

          Filesize

          4KB