Analysis

  • max time kernel
    144s
  • max time network
    142s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    28/03/2023, 04:55

General

  • Target

    543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590.exe

  • Size

    749KB

  • MD5

    95f5fa7b06c3599d18cf580bba1ad041

  • SHA1

    e420a046954a403db5e8ed4993f815f1cb432ed9

  • SHA256

    543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590

  • SHA512

    d0fa75cff951cee699f3b43bd31ad5f65abfb46f57486a82f96ff6789acb3bad775c8b535054b34820b99678b906b170c9196172031f9fc128b4056248c3c310

  • SSDEEP

    12288:75j0zu9Nd+/9VDVJKjx1wHF3LYIKB19I/78XB0JUnsBzQ+YN1iQH:75AuPIVEjDwlbYtS/78rNZH

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/raud/get.php

Attributes
  • extension

    .jyos

  • offline_id

    MEMHlobHgXqvmTWaMsLcwGZhDOd00bblO1yevst1

  • payload_url

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

    http://zexeq.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-fkW8qLaCVQ 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: 0677JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.1

Botnet

00d92484c9b27bc8482a2cc94cacc508

C2

https://steamcommunity.com/profiles/76561199472266392

https://t.me/tabootalks

http://135.181.26.183:80

Attributes
  • profile_id_v2

    00d92484c9b27bc8482a2cc94cacc508

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79

Signatures

  • Detected Djvu ransomware 16 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 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
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590.exe
    "C:\Users\Admin\AppData\Local\Temp\543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4668
    • C:\Users\Admin\AppData\Local\Temp\543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590.exe
      "C:\Users\Admin\AppData\Local\Temp\543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4880
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\1c71e41a-00ca-4740-8138-6a989b5fe98c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2292
      • C:\Users\Admin\AppData\Local\Temp\543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590.exe
        "C:\Users\Admin\AppData\Local\Temp\543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3876
        • C:\Users\Admin\AppData\Local\Temp\543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590.exe
          "C:\Users\Admin\AppData\Local\Temp\543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:944
          • C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build2.exe
            "C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1532
            • C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build2.exe
              "C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4456
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:500
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:644
          • C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build3.exe
            "C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4448
            • 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:4484
  • 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:744
    • 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:788

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

          Filesize

          2KB

          MD5

          e5b1cc0ae5af6a8277d75cff4af2c5e8

          SHA1

          4768fff3d4bbe02f89683b4a0e7b15b24b54eb9f

          SHA256

          d950c0d748aae641d71b11cd1c519b289917c23bee1a2b6bc5c496fd8e5d4655

          SHA512

          57a4737deeefac0124d73b52525993fecbbebd21a556ece87f8e79e845e07f037abb5e49f7458e8a010935c6691f18fbb913d77ecfb2ba902067788c483ec3d7

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

          Filesize

          1KB

          MD5

          3adac03b181d7980568dda0da0efc9de

          SHA1

          a283c4c9bd26a65b8240d21708e57f5946778341

          SHA256

          24c4973ced938b77d9670ac79eb76cd52411b17ab59ec78ba14c1b433f342933

          SHA512

          6fbd2a32fc18606628ea56311764cd879a1196405dddd4d269ad6163b2ffdcf916786f1c0328f27ec089be5cb9b4ecb3542363f4dfb3df1c1b91a0e038b67241

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

          Filesize

          488B

          MD5

          72db6e9d738503a5133f4f60cb3e6a3e

          SHA1

          56d78a215297b9cf9abcca38f0a7be1b324bfb94

          SHA256

          fab8c4ed5470b63167f1d8101b75412c1ba69545ba65cb33fb7703969c3d9476

          SHA512

          13435c81d116a8ccb5c3768be925cd4f62443f0c657ed0a8bbbbf967fc65cb3a6b22cac93b0612913e5a538db519c43c8e8dfd875e2ee3e7100de0c1effe8116

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

          Filesize

          482B

          MD5

          6b67d65cce19781be866927ba260c991

          SHA1

          f882b8b2220c084fd06bb2c2cdbb4db87ffb15a4

          SHA256

          f6523ec1f5a713c01b0bfc7675030124ec3a192b364e8a173b3bb3f8b69e8bff

          SHA512

          d1450d8706212ce4849c6c27e04a23f7e4f3e4f8f8a67c385ce7dea290297f14c4db87b940c1fb9be0b7d71e139265ed936e06a63352e390d92d621470ea6c06

        • C:\Users\Admin\AppData\Local\1c71e41a-00ca-4740-8138-6a989b5fe98c\543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590.exe

          Filesize

          749KB

          MD5

          95f5fa7b06c3599d18cf580bba1ad041

          SHA1

          e420a046954a403db5e8ed4993f815f1cb432ed9

          SHA256

          543eda6720be01859cba156967c7b777ea0de68524e37dbbfe9b405ecd5df590

          SHA512

          d0fa75cff951cee699f3b43bd31ad5f65abfb46f57486a82f96ff6789acb3bad775c8b535054b34820b99678b906b170c9196172031f9fc128b4056248c3c310

        • C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build2.exe

          Filesize

          299KB

          MD5

          6b343cd7dea3ae28d0819bc55a2f86fe

          SHA1

          cedd49849a5dd678d0a55da607e9b28a9680073c

          SHA256

          4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49

          SHA512

          7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48

        • C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build2.exe

          Filesize

          299KB

          MD5

          6b343cd7dea3ae28d0819bc55a2f86fe

          SHA1

          cedd49849a5dd678d0a55da607e9b28a9680073c

          SHA256

          4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49

          SHA512

          7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48

        • C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build2.exe

          Filesize

          299KB

          MD5

          6b343cd7dea3ae28d0819bc55a2f86fe

          SHA1

          cedd49849a5dd678d0a55da607e9b28a9680073c

          SHA256

          4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49

          SHA512

          7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48

        • C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\daf37fd1-3676-41fe-a870-da4e7e1e0bce\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

        • 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

        • memory/944-175-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/944-143-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/944-151-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/944-150-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/944-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/944-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/944-171-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/944-148-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/944-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/944-144-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1532-163-0x00000000005F0000-0x0000000000647000-memory.dmp

          Filesize

          348KB

        • memory/4456-241-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4456-162-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4456-160-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4456-246-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4456-174-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4456-245-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4456-186-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/4456-244-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4456-164-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4456-228-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4668-119-0x0000000002590000-0x00000000026AB000-memory.dmp

          Filesize

          1.1MB

        • memory/4880-132-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4880-123-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4880-120-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4880-117-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4880-118-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB