Analysis

  • max time kernel
    133s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/09/2022, 15:38

General

  • Target

    b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61.exe

  • Size

    660KB

  • MD5

    dec855ecf490ced8c4ece704c43ea3e6

  • SHA1

    942860fddbe4a4ff3dfd5a11315a6ad65d95ecf3

  • SHA256

    b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61

  • SHA512

    65e767b82fcb03c38b01584938af520309ef5ab2c0a1aa574f6a63d0cb434fd97393fe902237f49e7f283e9585d8127e110811a9947680649c05663fd7824c37

  • SSDEEP

    12288:ES+wK9I5WzQEsbnkOdcBG8x9losbrz9BfFhOotPEnOrAZtPJ:9JSI8NsbvdijFz9tOeAO83J

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 10 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
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Loads dropped DLL 2 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 3 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
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61.exe
    "C:\Users\Admin\AppData\Local\Temp\b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4984
    • C:\Users\Admin\AppData\Local\Temp\b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61.exe
      "C:\Users\Admin\AppData\Local\Temp\b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4576
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6d99128c-603f-45d6-9137-50c2cb4c4758" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3820
      • C:\Users\Admin\AppData\Local\Temp\b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61.exe
        "C:\Users\Admin\AppData\Local\Temp\b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4036
        • C:\Users\Admin\AppData\Local\Temp\b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61.exe
          "C:\Users\Admin\AppData\Local\Temp\b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1224
          • C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build2.exe
            "C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1164
            • C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build2.exe
              "C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build2.exe"
              6⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4088
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3936
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:896
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1776
          • C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build3.exe
            "C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3372
            • 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:3104
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2488
    • 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"
      2⤵
      • Creates scheduled task(s)
      PID:3944

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\ProgramData\mozglue.dll

          Filesize

          593KB

          MD5

          c8fd9be83bc728cc04beffafc2907fe9

          SHA1

          95ab9f701e0024cedfbd312bcfe4e726744c4f2e

          SHA256

          ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

          SHA512

          fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

        • C:\ProgramData\nss3.dll

          Filesize

          2.0MB

          MD5

          1cc453cdf74f31e4d913ff9c10acdde2

          SHA1

          6e85eae544d6e965f15fa5c39700fa7202f3aafe

          SHA256

          ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

          SHA512

          dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3538626A1FCCCA43C7E18F220BDD9B02

          Filesize

          978B

          MD5

          81ed3bbb26b6dfda8dec62e8a68a830b

          SHA1

          c237b1bcf86662acc39a89cd648cbf699dc44085

          SHA256

          435621a4514b0660fd2b24ec63bfeca4ecdc5a3fe03f6c2be1e3d11c28a176de

          SHA512

          fd5829088c905a28f497e60f99fc663c5cdd64bba69d92a584e541ec0185b58af5d5d276a666fccbe2e476e2c3a366b3eaa7d66d06a7968eb2895363f57d3256

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

          Filesize

          1KB

          MD5

          cb19ea31ccbd0203dd87e096916c57fa

          SHA1

          cab9da6765c414006fc24a26afe3d9faed3da46c

          SHA256

          f2c2e4c4cb0138ea54016a5b4e248a37f10c3ce22ad3ac85f8509a9692d0394b

          SHA512

          20b5e6d75aa6340e47bb723541ede1ca9a54b8df916e3b9ae6e27ae869dfd13605feb400e0c847974594e126b9852dcb1785f55fc93ba10abcdef93ef71f5b36

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3538626A1FCCCA43C7E18F220BDD9B02

          Filesize

          274B

          MD5

          15b523d7b61f655552adc49c067425a7

          SHA1

          a405b3eb3eab26c36b1a56bd4f435ec5b465f4bb

          SHA256

          04c841859bb1e8f69d345c7e6485ed1ad9dd4cbc34f7815dd95a52e8d14f44ea

          SHA512

          599330fbf1c6c1e6b99de599f2d3c5d15a2835a6959c31339e0bc5da249cfd8cb87955b784071ba7d201216242b683b60087faec98ebbd2e0e5c77a714d73381

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

          Filesize

          482B

          MD5

          f377e1bf6694fcfa3a499f905bafcf58

          SHA1

          278c2e704a9bb7096907104f4129eb5e471104bb

          SHA256

          9a26df28d056a1b13cef8abff7ed4baf0364793c49f074fd1b00d8d068e5bcf9

          SHA512

          8d8d51ae51a509cba2d1a2a09238108e09896dc2580cd9764846e9f472bffbb4c409a0b436084ef44cab36c22e00ae5ce312017a933d3a3e446851f1e5e2fdef

        • C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build2.exe

          Filesize

          418KB

          MD5

          bc47d3a0d4a74adc40b3a7035344becb

          SHA1

          dd80bbe70106b62ea58924173a364cc936a0b1f4

          SHA256

          06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

          SHA512

          4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

        • C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build2.exe

          Filesize

          418KB

          MD5

          bc47d3a0d4a74adc40b3a7035344becb

          SHA1

          dd80bbe70106b62ea58924173a364cc936a0b1f4

          SHA256

          06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

          SHA512

          4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

        • C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build2.exe

          Filesize

          418KB

          MD5

          bc47d3a0d4a74adc40b3a7035344becb

          SHA1

          dd80bbe70106b62ea58924173a364cc936a0b1f4

          SHA256

          06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

          SHA512

          4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

        • C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\1be63b93-fb9d-4988-bba7-6ca0f07de001\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\6d99128c-603f-45d6-9137-50c2cb4c4758\b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61.exe

          Filesize

          660KB

          MD5

          dec855ecf490ced8c4ece704c43ea3e6

          SHA1

          942860fddbe4a4ff3dfd5a11315a6ad65d95ecf3

          SHA256

          b7b52dce1e76841dc91e76b8287192d26563cdd51ce737ad3f9b29ca44378c61

          SHA512

          65e767b82fcb03c38b01584938af520309ef5ab2c0a1aa574f6a63d0cb434fd97393fe902237f49e7f283e9585d8127e110811a9947680649c05663fd7824c37

        • 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

        • memory/1164-166-0x00000000007D0000-0x0000000000817000-memory.dmp

          Filesize

          284KB

        • memory/1164-164-0x00000000005EE000-0x0000000000617000-memory.dmp

          Filesize

          164KB

        • memory/1224-145-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1224-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1224-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1224-167-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4036-146-0x000000000236D000-0x00000000023FF000-memory.dmp

          Filesize

          584KB

        • memory/4088-163-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4088-165-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4088-190-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4088-168-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4088-169-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/4088-161-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4576-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4576-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4576-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4576-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4576-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4984-136-0x0000000002400000-0x000000000251B000-memory.dmp

          Filesize

          1.1MB

        • memory/4984-135-0x000000000236D000-0x00000000023FF000-memory.dmp

          Filesize

          584KB