Analysis

  • max time kernel
    144s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    23/04/2022, 18:55

General

  • Target

    7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8.exe

  • Size

    725KB

  • MD5

    e3855378a2ca9dc062fb148b809a2f43

  • SHA1

    f7be235c8293a65357ead3c95245ea80fc8ba787

  • SHA256

    7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8

  • SHA512

    150abb9e7d2a7495c54dc68f05cdf84b7e652b9afa523c5f96a8ccd96cf88f9c91ef0ff978845c81dc34b112e612de20fc8da2fdf428daa2703b43e53b94cf36

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes
  • extension

    .msjd

  • offline_id

    Xe4NOamOTHZrARTiL9dfVzAylFrEWLGGbr2dngt1

  • payload_url

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

    http://fuyt.org/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-FT7BNVbXC9 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: 0455JIjdm

rsa_pubkey.plain

Extracted

Family

vidar

Version

51.8

Botnet

517

C2

https://t.me/mm20220428

https://koyu.space/@ronxik123

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.

  • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

  • Vidar Stealer 6 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 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.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8.exe
    "C:\Users\Admin\AppData\Local\Temp\7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2764
    • C:\Users\Admin\AppData\Local\Temp\7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8.exe
      "C:\Users\Admin\AppData\Local\Temp\7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3000
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\84bfbd0d-444e-4887-aa21-630109e42753" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4612
      • C:\Users\Admin\AppData\Local\Temp\7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8.exe
        "C:\Users\Admin\AppData\Local\Temp\7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2892
        • C:\Users\Admin\AppData\Local\Temp\7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8.exe
          "C:\Users\Admin\AppData\Local\Temp\7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4628
          • C:\Users\Admin\AppData\Local\5e4e5b91-8459-4d88-b3db-472bd113cff5\build2.exe
            "C:\Users\Admin\AppData\Local\5e4e5b91-8459-4d88-b3db-472bd113cff5\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4752
            • C:\Users\Admin\AppData\Local\5e4e5b91-8459-4d88-b3db-472bd113cff5\build2.exe
              "C:\Users\Admin\AppData\Local\5e4e5b91-8459-4d88-b3db-472bd113cff5\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:5020

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          727B

          MD5

          ae80420644f9d17a1ceb04dfe52b4551

          SHA1

          aca7052dea384b8d31813c11839d16dcef04a4b5

          SHA256

          8893c680c876c7e9a453e301b2763e4310c2fc165bcb8e6cf23ae117f6cff476

          SHA512

          3f742909f7dc09e109f0eec4c245f3be76121dfdab494252eba5edb1907402cf7867cdc7595c529d3445a1676750aebbf9aba4df760ad58645aaf3d897a82a6d

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

          Filesize

          471B

          MD5

          4b48eeea719432bc0719653be71e6ecf

          SHA1

          41367524cf7d0c34d7737722cb2212558fca9938

          SHA256

          2d25e68537528a81bcadb24f24afda11671512a17d04ed304cf138a30b228866

          SHA512

          152b287e3d0c05f3b4dea98a20e1fc39a61008b3d5c4acc7632647bdffc090ef2ea76d4ec3a6d0cf3387c9f2f43fde1624f213908beb9583b6ad43429f551533

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

          Filesize

          402B

          MD5

          58216725ee464a7f4f52e75e9434b9cb

          SHA1

          b1c4e9c33fb7bee4bb848dffd46697b36e0908b4

          SHA256

          f28ad4130e5e2d79a2002925c889db3106f9a3dfcb0db5cdd35407c53329763e

          SHA512

          2de010d8b230d8f3e256b1afa5fe0ef3f3d686bcf2e81d2b3ec5699fb5c87834151c4345c8937e1dd018739bc739912d2da4352d2ffd1575668c4345b25f2eb0

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

          Filesize

          396B

          MD5

          6ac0c628e85e04b23aff1b422dbe6533

          SHA1

          e21dc40a3b1404ec00b4b28c8b5fca8b368eddd4

          SHA256

          c4443a119bdef591702f2481e8570dd4d986dd47a617af2ff4a9df050ab000a0

          SHA512

          2bf9f6baf3a07c00f813f6fee2a035de243e8ee6493a74e63d4b551ef0edfd90d7f4c1254f3d97818d3363c69d7bc78b675049d9693a0bee4fdcf7d3b8f24815

        • C:\Users\Admin\AppData\Local\5e4e5b91-8459-4d88-b3db-472bd113cff5\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\5e4e5b91-8459-4d88-b3db-472bd113cff5\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\5e4e5b91-8459-4d88-b3db-472bd113cff5\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\84bfbd0d-444e-4887-aa21-630109e42753\7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8.exe

          Filesize

          725KB

          MD5

          e3855378a2ca9dc062fb148b809a2f43

          SHA1

          f7be235c8293a65357ead3c95245ea80fc8ba787

          SHA256

          7e242067160c01819b6f279cacdc1b896d35ebf1b5edcd872154a18fdc8871a8

          SHA512

          150abb9e7d2a7495c54dc68f05cdf84b7e652b9afa523c5f96a8ccd96cf88f9c91ef0ff978845c81dc34b112e612de20fc8da2fdf428daa2703b43e53b94cf36

        • \ProgramData\mozglue.dll

          Filesize

          133KB

          MD5

          8f73c08a9660691143661bf7332c3c27

          SHA1

          37fa65dd737c50fda710fdbde89e51374d0c204a

          SHA256

          3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

          SHA512

          0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

        • \ProgramData\nss3.dll

          Filesize

          1.2MB

          MD5

          bfac4e3c5908856ba17d41edcd455a51

          SHA1

          8eec7e888767aa9e4cca8ff246eb2aacb9170428

          SHA256

          e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

          SHA512

          2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

        • memory/2764-121-0x0000000002320000-0x000000000243B000-memory.dmp

          Filesize

          1.1MB

        • memory/2892-127-0x0000000000616000-0x00000000006A7000-memory.dmp

          Filesize

          580KB

        • memory/3000-118-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3000-123-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3000-122-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3000-120-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4628-130-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4628-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4628-131-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4752-145-0x00000000020B0000-0x00000000020F9000-memory.dmp

          Filesize

          292KB

        • memory/5020-141-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/5020-146-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/5020-147-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/5020-144-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB