Analysis

  • max time kernel
    27s
  • max time network
    136s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    18/10/2021, 13:28

General

  • Target
    34ff816c9decd4151520a12452cde537.exe
  • Size 164KB
  • Sample211018-qqpb5sefar
  • SHA256 32016cf36c5e99a6c8fba8fd4ffad8b5f301cac55439ae73fec5db799ac341ab
  • MD5 SHA1 SHA512

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/?102YAHJAMOA 5. and open ticket ---------------------------------------------------------------------------------------- Alternate communication channel here: https://yip.su/2QstD5
URLs
  • http://mmeeiix2ejdwkmseycljetmpiwebdvgjts75c63camjofn2cjdoulzqd.onion/?102YAHJAMOA

  • https://yip.su/2QstD5

Signatures

  • Turns off Windows Defender SpyNet reporting 2 TTPs
  • Windows security bypass 2 TTPs
  • Nirsoft 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 11 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 15 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\34ff816c9decd4151520a12452cde537.exe
    "C:\Users\Admin\AppData\Local\Temp\34ff816c9decd4151520a12452cde537.exe"
    1⤵
    • Windows security modification
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Cursors\㒀㒁㑤㑿㒀㒁㒂㑾㑿㒁㑧㑓㒕㒂㑔\svchost.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2224
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\34ff816c9decd4151520a12452cde537.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:632
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Cursors\㒀㒁㑤㑿㒀㒁㒂㑾㑿㒁㑧㑓㒕㒂㑔\svchost.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2448
    • C:\Users\Admin\AppData\Local\Temp\b274ce06-0420-439d-a9db-ff78af476053\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\b274ce06-0420-439d-a9db-ff78af476053\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\b274ce06-0420-439d-a9db-ff78af476053\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3196
      • C:\Users\Admin\AppData\Local\Temp\b274ce06-0420-439d-a9db-ff78af476053\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\b274ce06-0420-439d-a9db-ff78af476053\AdvancedRun.exe" /SpecialRun 4101d8 3196
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3544
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\34ff816c9decd4151520a12452cde537.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2216
    • C:\Users\Admin\AppData\Local\Temp\34ff816c9decd4151520a12452cde537.exe
      "C:\Users\Admin\AppData\Local\Temp\34ff816c9decd4151520a12452cde537.exe"
      2⤵
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      PID:2732
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1676 -s 2400
      2⤵
      • Drops file in Windows directory
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3892
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
      PID:1276
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
        PID:1268
      • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
        "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
        1⤵
          PID:3164
        • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
          "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
          1⤵
            PID:3060
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
              PID:4292
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k appmodel -s tiledatamodelsvc
              1⤵
                PID:3428
              • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
                "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
                1⤵
                  PID:4684
                • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
                  1⤵
                    PID:4716

                  Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

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                        Downloads

                        memory/632-220-0x000000007F7D0000-0x000000007F7D1000-memory.dmp

                        memory/632-256-0x0000000004603000-0x0000000004604000-memory.dmp

                        memory/632-172-0x0000000002D80000-0x0000000002D81000-memory.dmp

                        memory/632-128-0x0000000002D80000-0x0000000002D81000-memory.dmp

                        memory/632-129-0x0000000002D80000-0x0000000002D81000-memory.dmp

                        memory/632-140-0x0000000004600000-0x0000000004601000-memory.dmp

                        memory/632-142-0x0000000004602000-0x0000000004603000-memory.dmp

                        memory/1676-135-0x0000000006660000-0x0000000006661000-memory.dmp

                        memory/1676-145-0x0000000005DB0000-0x0000000005DB1000-memory.dmp

                        memory/1676-115-0x0000000000680000-0x0000000000681000-memory.dmp

                        memory/1676-118-0x00000000059E0000-0x00000000059E1000-memory.dmp

                        memory/1676-117-0x0000000004F30000-0x0000000004F31000-memory.dmp

                        memory/1676-121-0x0000000005940000-0x00000000059B3000-memory.dmp

                        memory/1676-122-0x0000000005F80000-0x0000000005F81000-memory.dmp

                        memory/2216-181-0x0000000002A70000-0x0000000002A71000-memory.dmp

                        memory/2216-303-0x0000000002DC3000-0x0000000002DC4000-memory.dmp

                        memory/2216-186-0x0000000002DC0000-0x0000000002DC1000-memory.dmp

                        memory/2216-182-0x0000000002A70000-0x0000000002A71000-memory.dmp

                        memory/2216-187-0x0000000002DC2000-0x0000000002DC3000-memory.dmp

                        memory/2216-300-0x000000007F780000-0x000000007F781000-memory.dmp

                        memory/2224-211-0x000000007EDF0000-0x000000007EDF1000-memory.dmp

                        memory/2224-149-0x00000000078F0000-0x00000000078F1000-memory.dmp

                        memory/2224-176-0x0000000002F60000-0x0000000002F61000-memory.dmp

                        memory/2224-125-0x0000000002F60000-0x0000000002F61000-memory.dmp

                        memory/2224-126-0x0000000002F60000-0x0000000002F61000-memory.dmp

                        memory/2224-130-0x0000000004830000-0x0000000004831000-memory.dmp

                        memory/2224-132-0x0000000007290000-0x0000000007291000-memory.dmp

                        memory/2224-139-0x0000000002F70000-0x0000000002F71000-memory.dmp

                        memory/2224-141-0x0000000002F72000-0x0000000002F73000-memory.dmp

                        memory/2224-255-0x0000000002F73000-0x0000000002F74000-memory.dmp

                        memory/2224-155-0x0000000007B30000-0x0000000007B31000-memory.dmp

                        memory/2448-254-0x00000000044B3000-0x00000000044B4000-memory.dmp

                        memory/2448-215-0x000000007FDF0000-0x000000007FDF1000-memory.dmp

                        memory/2448-152-0x0000000007490000-0x0000000007491000-memory.dmp

                        memory/2448-173-0x00000000041E0000-0x00000000041E1000-memory.dmp

                        memory/2448-169-0x0000000007E20000-0x0000000007E21000-memory.dmp

                        memory/2448-166-0x0000000007F60000-0x0000000007F61000-memory.dmp

                        memory/2448-143-0x00000000044B0000-0x00000000044B1000-memory.dmp

                        memory/2448-144-0x00000000044B2000-0x00000000044B3000-memory.dmp

                        memory/2448-159-0x0000000007680000-0x0000000007681000-memory.dmp

                        memory/2448-134-0x00000000041E0000-0x00000000041E1000-memory.dmp

                        memory/2448-136-0x00000000041E0000-0x00000000041E1000-memory.dmp

                        memory/2448-163-0x00000000075E0000-0x00000000075E1000-memory.dmp

                        memory/2732-179-0x0000000000400000-0x000000000041F000-memory.dmp

                        memory/2732-185-0x0000000000400000-0x000000000041F000-memory.dmp