Overview

overview

10

Static

static

0e5bd98bcf...fb.exe

windows7_x64

5

0e5bd98bcf...fb.exe

windows10_x64

10

Analysis

  • max time kernel
    56s
  • max time network
    120s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    05/12/2021, 08:20

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General

  • Target
    0e5bd98bcf1ef9bef39f19f41e1aabfb.exe
  • Size 1.3MB
  • Sample211205-j8fdmacbgp
  • SHA256 31f84b5a677f3be143c04055bf0d6dc79433332d98e7fd89c68429c2192ac385
  • MD5 SHA1 SHA512
Score
10/10
persistenceransomware

Malware Config

Extracted

Path

  • C:\Boot\bg-BG\Read_Me.txt

Ransom Note
  • Attention! All your files, documents, photos, databases and other important files are encrypted The only method of recovering files is to purchase an unique decryptor. Only we can give you this decryptor and only we can recover your files. The server with your decryptor is in a closed network TOR. You can get there by the following ways: ---------------------------------------------------------------------------------------- 1. Download Tor browser - https://www.torproject.org/ 2. Install Tor browser 3. Open Tor Browser 4. Open link in TOR browser: http://mmeeiix2ejdwkmseycljetmpiwebdvgjts75c63camjofn2cjdoulzqd.onion/?101ZRSUVXZA 5. and open ticket ---------------------------------------------------------------------------------------- Alternate communication channel here: https://yip.su/2QstD5
URLs

  • http://mmeeiix2ejdwkmseycljetmpiwebdvgjts75c63camjofn2cjdoulzqd.onion/?101ZRSUVXZA

  • https://yip.su/2QstD5

Signatures

  • Modifies Installed Components in the registry 2 TTPs
    persistence
  • Drops desktop.ini file(s) 4 IoCs
  • Enumerates connected drives 3 TTPs 26 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 5 IoCs
  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 12 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 29 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 38 IoCs
  • Suspicious use of FindShellTrayWindow 41 IoCs
  • Suspicious use of SendNotifyMessage 22 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0e5bd98bcf1ef9bef39f19f41e1aabfb.exe
    "C:\Users\Admin\AppData\Local\Temp\0e5bd98bcf1ef9bef39f19f41e1aabfb.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Users\Admin\AppData\Local\Temp\0e5bd98bcf1ef9bef39f19f41e1aabfb.exe
      "C:\Users\Admin\AppData\Local\Temp\0e5bd98bcf1ef9bef39f19f41e1aabfb.exe"
      2⤵
      • Drops desktop.ini file(s)
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      PID:1588
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1676 -s 952
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2712
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
      PID:864
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Drops desktop.ini file(s)
      • Enumerates connected drives
      • Drops file in Windows directory
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1804
    • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
      "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
      1⤵
      • Drops file in Windows directory
      • Suspicious use of SetWindowsHookEx
      PID:3612
    • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
      1⤵
      • Drops file in Windows directory
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3944
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
        PID:3436
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k appmodel -s tiledatamodelsvc
        1⤵
          PID:3516
        • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
          "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
          1⤵
            PID:3104
          • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
            "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
            1⤵
              PID:2624

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  memory/1588-123-0x0000000000400000-0x000000000041F000-memory.dmp
                  Download

                  memory/1588-126-0x0000000000400000-0x000000000041F000-memory.dmp
                  Download

                  memory/1676-120-0x0000000005A50000-0x0000000005A51000-memory.dmp
                  Download

                  memory/1676-121-0x0000000003450000-0x000000000347B000-memory.dmp
                  Download

                  memory/1676-122-0x00000000072E0000-0x00000000072E1000-memory.dmp
                  Download

                  memory/1676-125-0x0000000003310000-0x0000000003311000-memory.dmp
                  Download

                  memory/1676-118-0x0000000000F80000-0x0000000000F81000-memory.dmp
                  Download

                  memory/1804-127-0x00000000026A0000-0x00000000026A1000-memory.dmp
                  Download

                  memory/3436-133-0x0000000002EA0000-0x0000000002EA1000-memory.dmp
                  Download

                  memory/3516-130-0x000001AD77340000-0x000001AD77350000-memory.dmp
                  Download

                  memory/3516-131-0x000001AD779A0000-0x000001AD779A1000-memory.dmp
                  Download

                  memory/3516-132-0x000001AD77A20000-0x000001AD77A21000-memory.dmp
                  Download

                  memory/3516-129-0x000001AD77300000-0x000001AD77310000-memory.dmp
                  Download