Analysis

  • max time kernel
    65s
  • max time network
    60s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01/10/2022, 08:42

General

  • Target

    file.exe

  • Size

    663KB

  • MD5

    a54364a9cfb0432b809edb31eff09060

  • SHA1

    57480ed8ca4cc175f1bcabf76e6af29c9ed72e95

  • SHA256

    17b039e4983a63603f4870bcd36e7be0e08b86a9aa84601b49d76fa7f6613482

  • SHA512

    39e7b3a222aeb0c53b2c4737c2a331e05b4cb57a068435665dc78533ec96619800540b6e2b6869884c9f27809c31f41e81895f28b6529cb00d83753dcda7ec22

  • SSDEEP

    12288:QTtqle8To+CrQ7+1hyNMsjOvy9W+z+naY1AFB+gxry3ohs+ybF6:QT0c8EzUNb6vy9ptY1AGq23o6+OF6

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/test3/get.php

Attributes
  • extension

    .ofoq

  • offline_id

    xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://winnlinne.com/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-EWKSsSJiVn Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0568Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

54.7

Botnet

517

C2

https://t.me/trampapanam

https://nerdculture.de/@yoxhyp

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 6 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1388
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1944
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a919563b-056a-444c-b336-4ba7c21bc616" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1868
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1144
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:932
          • C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build2.exe
            "C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1372
            • C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build2.exe
              "C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Modifies system certificate store
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:624
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" J.198.89.6/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                  PID:1896
                  • C:\Windows\SysWOW64\taskkill.exe
                    taskkill /im build2.exe /f
                    8⤵
                    • Kills process with taskkill
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1880
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout /t 6
                    8⤵
                    • Delays execution with timeout.exe
                    PID:840
            • C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build3.exe
              "C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build3.exe"
              5⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:1352
              • C:\Windows\SysWOW64\schtasks.exe
                /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
                6⤵
                • Creates scheduled task(s)
                PID:1872
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {6CD2B6C4-B4C4-47BE-8FFC-238C89E81E58} S-1-5-21-3845472200-3839195424-595303356-1000:ZERMMMDR\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1108
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1624
        • C:\Windows\SysWOW64\schtasks.exe
          /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
          3⤵
          • Creates scheduled task(s)
          PID:1544

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

            Filesize

            60KB

            MD5

            d15aaa7c9be910a9898260767e2490e1

            SHA1

            2090c53f8d9fc3fbdbafd3a1e4dc25520eb74388

            SHA256

            f8ebaaf487cba0c81a17c8cd680bdd2dd8e90d2114ecc54844cffc0cc647848e

            SHA512

            7e1c1a683914b961b5cc2fe5e4ae288b60bab43bfaa21ce4972772aa0589615c19f57e672e1d93e50a7ed7b76fbd2f1b421089dcaed277120b93f8e91b18af94

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

            Filesize

            342B

            MD5

            2340fc1b7a7e89d76669ef2f81975688

            SHA1

            f78282c9d1a174343ed9ab2c36b688e71a7259ae

            SHA256

            bf46777fdc15e98578dcb3f57fcca92e3b5450362a1991cc91a9e43982598644

            SHA512

            197a5f38fe940b9ff3ba19dc2cbbe579899a27a897590e47b64f4905b8a53bd96ee8b13fd8d8a39c1fbda2c93bba098ca6f6be42511b838baf9c73b0e84a3a3f

          • C:\Users\Admin\AppData\Local\a919563b-056a-444c-b336-4ba7c21bc616\file.exe

            Filesize

            663KB

            MD5

            a54364a9cfb0432b809edb31eff09060

            SHA1

            57480ed8ca4cc175f1bcabf76e6af29c9ed72e95

            SHA256

            17b039e4983a63603f4870bcd36e7be0e08b86a9aa84601b49d76fa7f6613482

            SHA512

            39e7b3a222aeb0c53b2c4737c2a331e05b4cb57a068435665dc78533ec96619800540b6e2b6869884c9f27809c31f41e81895f28b6529cb00d83753dcda7ec22

          • C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build2.exe

            Filesize

            418KB

            MD5

            bc47d3a0d4a74adc40b3a7035344becb

            SHA1

            dd80bbe70106b62ea58924173a364cc936a0b1f4

            SHA256

            06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

            SHA512

            4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

          • C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build2.exe

            Filesize

            418KB

            MD5

            bc47d3a0d4a74adc40b3a7035344becb

            SHA1

            dd80bbe70106b62ea58924173a364cc936a0b1f4

            SHA256

            06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

            SHA512

            4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

          • C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build2.exe

            Filesize

            418KB

            MD5

            bc47d3a0d4a74adc40b3a7035344becb

            SHA1

            dd80bbe70106b62ea58924173a364cc936a0b1f4

            SHA256

            06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

            SHA512

            4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

          • C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build3.exe

            Filesize

            9KB

            MD5

            9ead10c08e72ae41921191f8db39bc16

            SHA1

            abe3bce01cd34afc88e2c838173f8c2bd0090ae1

            SHA256

            8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

            SHA512

            aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

          • C:\Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build3.exe

            Filesize

            9KB

            MD5

            9ead10c08e72ae41921191f8db39bc16

            SHA1

            abe3bce01cd34afc88e2c838173f8c2bd0090ae1

            SHA256

            8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

            SHA512

            aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

          • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

            Filesize

            9KB

            MD5

            9ead10c08e72ae41921191f8db39bc16

            SHA1

            abe3bce01cd34afc88e2c838173f8c2bd0090ae1

            SHA256

            8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

            SHA512

            aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

          • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

            Filesize

            9KB

            MD5

            9ead10c08e72ae41921191f8db39bc16

            SHA1

            abe3bce01cd34afc88e2c838173f8c2bd0090ae1

            SHA256

            8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

            SHA512

            aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

          • \ProgramData\mozglue.dll

            Filesize

            593KB

            MD5

            c8fd9be83bc728cc04beffafc2907fe9

            SHA1

            95ab9f701e0024cedfbd312bcfe4e726744c4f2e

            SHA256

            ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

            SHA512

            fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

          • \ProgramData\nss3.dll

            Filesize

            2.0MB

            MD5

            1cc453cdf74f31e4d913ff9c10acdde2

            SHA1

            6e85eae544d6e965f15fa5c39700fa7202f3aafe

            SHA256

            ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

            SHA512

            dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

          • \Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build2.exe

            Filesize

            418KB

            MD5

            bc47d3a0d4a74adc40b3a7035344becb

            SHA1

            dd80bbe70106b62ea58924173a364cc936a0b1f4

            SHA256

            06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

            SHA512

            4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

          • \Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build2.exe

            Filesize

            418KB

            MD5

            bc47d3a0d4a74adc40b3a7035344becb

            SHA1

            dd80bbe70106b62ea58924173a364cc936a0b1f4

            SHA256

            06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

            SHA512

            4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

          • \Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build3.exe

            Filesize

            9KB

            MD5

            9ead10c08e72ae41921191f8db39bc16

            SHA1

            abe3bce01cd34afc88e2c838173f8c2bd0090ae1

            SHA256

            8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

            SHA512

            aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

          • \Users\Admin\AppData\Local\bdf79759-89cb-494a-ab25-6f2bc4fea70d\build3.exe

            Filesize

            9KB

            MD5

            9ead10c08e72ae41921191f8db39bc16

            SHA1

            abe3bce01cd34afc88e2c838173f8c2bd0090ae1

            SHA256

            8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

            SHA512

            aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

          • memory/624-98-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            Filesize

            972KB

          • memory/624-95-0x0000000000400000-0x000000000045B000-memory.dmp

            Filesize

            364KB

          • memory/624-94-0x0000000000400000-0x000000000045B000-memory.dmp

            Filesize

            364KB

          • memory/624-124-0x0000000000400000-0x000000000045B000-memory.dmp

            Filesize

            364KB

          • memory/624-87-0x0000000000400000-0x000000000045B000-memory.dmp

            Filesize

            364KB

          • memory/932-74-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/932-73-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1144-71-0x0000000000310000-0x00000000003A1000-memory.dmp

            Filesize

            580KB

          • memory/1144-67-0x0000000000310000-0x00000000003A1000-memory.dmp

            Filesize

            580KB

          • memory/1372-90-0x00000000005EE000-0x0000000000617000-memory.dmp

            Filesize

            164KB

          • memory/1372-92-0x0000000000230000-0x0000000000277000-memory.dmp

            Filesize

            284KB

          • memory/1388-57-0x0000000000220000-0x00000000002B1000-memory.dmp

            Filesize

            580KB

          • memory/1388-54-0x0000000000220000-0x00000000002B1000-memory.dmp

            Filesize

            580KB

          • memory/1388-60-0x0000000001E50000-0x0000000001F6B000-memory.dmp

            Filesize

            1.1MB

          • memory/1944-62-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1944-61-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1944-66-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1944-55-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1944-59-0x00000000753C1000-0x00000000753C3000-memory.dmp

            Filesize

            8KB