Analysis

  • max time kernel
    152s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/10/2022, 14:21

General

  • Target

    5564c4680da43fb5501cd028b43531f5.exe

  • Size

    730KB

  • MD5

    5564c4680da43fb5501cd028b43531f5

  • SHA1

    0e11e3f578c5271423bb9ace237fb2bebe496444

  • SHA256

    77f6a304c9f641f5c2bb23f1071a28518532f08ecf6aaf99133dfcc89491bcd8

  • SHA512

    aa04b7280e3316c408e2e92d88949a583f4c35012298fc19765c286ec5dc41c3c4a8c2a1698cdafe8cea26b5c329955758b281f0b85698d1a5a5a81cec774baf

  • SSDEEP

    12288:r2V9envgvHStv9oN66C8trmyWq8NZ15kaf7y0ujTQfNcsWXjvQWuODDJ:r2GmStv9oNRPr9W3yVnQF6XjvQCJ

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/test1/get.php

Attributes
  • extension

    .tohj

  • offline_id

    SSHsHMHGmSIhrz50VnIxLJJX15osxEQY6iXedXt1

  • 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-Kbx8mJatqN 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: 0574Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

55

Botnet

517

C2

https://t.me/truewallets

https://mas.to/@zara99

http://116.203.10.3:80

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 2 IoCs
  • Checks computer location settings 2 TTPs 2 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.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5564c4680da43fb5501cd028b43531f5.exe
    "C:\Users\Admin\AppData\Local\Temp\5564c4680da43fb5501cd028b43531f5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2908
    • C:\Users\Admin\AppData\Local\Temp\5564c4680da43fb5501cd028b43531f5.exe
      "C:\Users\Admin\AppData\Local\Temp\5564c4680da43fb5501cd028b43531f5.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4952
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\4f6c299e-bc02-4c92-b984-8d8f116d0f15" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4804
      • C:\Users\Admin\AppData\Local\Temp\5564c4680da43fb5501cd028b43531f5.exe
        "C:\Users\Admin\AppData\Local\Temp\5564c4680da43fb5501cd028b43531f5.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1312
        • C:\Users\Admin\AppData\Local\Temp\5564c4680da43fb5501cd028b43531f5.exe
          "C:\Users\Admin\AppData\Local\Temp\5564c4680da43fb5501cd028b43531f5.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2256
          • C:\Users\Admin\AppData\Local\86d695e0-aa89-4f65-9483-06f7d493b5b5\build2.exe
            "C:\Users\Admin\AppData\Local\86d695e0-aa89-4f65-9483-06f7d493b5b5\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:116
            • C:\Users\Admin\AppData\Local\86d695e0-aa89-4f65-9483-06f7d493b5b5\build2.exe
              "C:\Users\Admin\AppData\Local\86d695e0-aa89-4f65-9483-06f7d493b5b5\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:1536
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1536 -s 756
                7⤵
                • Program crash
                PID:2280
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1536 -ip 1536
    1⤵
      PID:4620

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          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\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

            Filesize

            2KB

            MD5

            6f59ed058aa06aaf5ec6213b955aabd4

            SHA1

            baf7b828a563b8fb6111e4ce35e0055575ad80b4

            SHA256

            2d82e2629fa2e08f28b43b15da43dff56c7f4b23b39d66109c7c61998e35b4d5

            SHA512

            6b0f041dafb98b9eaf70ac0d20a98c56e1c42231c4a4ae6e11582b20d20bf8f96dfd7747739a10d77368994441adb0e181b356f8569697b1f22ab4fe931170ce

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

            Filesize

            1KB

            MD5

            0698dbc93ba7b6bef73ba316695f8317

            SHA1

            a444078ff1eb7c88f52cb4e324365926b491ed47

            SHA256

            263292040d77903899257c1d21201dc64d6f8d6b5a1d945cd5b28d0124d7906c

            SHA512

            ebacaa7009aebb88199cd70fd0bb3afe69ed300318cb633edd1c0404e42aef829617f589bcbad6cb7ab4bd0a8ae87f7df1435c786184ecc5de61c8fc6950a900

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

            Filesize

            488B

            MD5

            76ae69fca39bf602ccd1c443821d30b2

            SHA1

            ee319c29666d04f7308b2e6f548ae3e706c7ffbc

            SHA256

            fa301f54d1be51ec5d4ccb74a7d0bb9598b1282074085bfc9c3f043dfd05686e

            SHA512

            9a759952b614ede343aed297c4de793aaf3499012e47d2b795d721a88a4be0a6d2780591981deb2e2219772d881145dcd44dd2a04ccb5502391a34edafb70807

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

            Filesize

            482B

            MD5

            21e2bd1b0d4c6f33fcb40e626a26fea7

            SHA1

            a59a76c1e958d9d1d51e7bedbad79429a7cbbc95

            SHA256

            4926d244f53918b7019a21457f9e08f560bab1ef9bb826da0f7840209f9298fa

            SHA512

            7b7886759cb2e39eea0fbd59ece2f6fccde7c8bc192affa8a126f567f374e7a9d96ed8bb97c8f895ea291a45c523abd6307238f8b55ec804a77ccf56ecff4348

          • C:\Users\Admin\AppData\Local\4f6c299e-bc02-4c92-b984-8d8f116d0f15\5564c4680da43fb5501cd028b43531f5.exe

            Filesize

            730KB

            MD5

            5564c4680da43fb5501cd028b43531f5

            SHA1

            0e11e3f578c5271423bb9ace237fb2bebe496444

            SHA256

            77f6a304c9f641f5c2bb23f1071a28518532f08ecf6aaf99133dfcc89491bcd8

            SHA512

            aa04b7280e3316c408e2e92d88949a583f4c35012298fc19765c286ec5dc41c3c4a8c2a1698cdafe8cea26b5c329955758b281f0b85698d1a5a5a81cec774baf

          • C:\Users\Admin\AppData\Local\86d695e0-aa89-4f65-9483-06f7d493b5b5\build2.exe

            Filesize

            321KB

            MD5

            5fd8c38657bb9393bb4736c880675223

            SHA1

            f3a03b2e75cef22262f6677e3832b6ad9327905c

            SHA256

            2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6

            SHA512

            43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe

          • C:\Users\Admin\AppData\Local\86d695e0-aa89-4f65-9483-06f7d493b5b5\build2.exe

            Filesize

            321KB

            MD5

            5fd8c38657bb9393bb4736c880675223

            SHA1

            f3a03b2e75cef22262f6677e3832b6ad9327905c

            SHA256

            2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6

            SHA512

            43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe

          • C:\Users\Admin\AppData\Local\86d695e0-aa89-4f65-9483-06f7d493b5b5\build2.exe

            Filesize

            321KB

            MD5

            5fd8c38657bb9393bb4736c880675223

            SHA1

            f3a03b2e75cef22262f6677e3832b6ad9327905c

            SHA256

            2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6

            SHA512

            43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe

          • memory/116-161-0x0000000000700000-0x000000000074F000-memory.dmp

            Filesize

            316KB

          • memory/116-159-0x00000000007AE000-0x00000000007DA000-memory.dmp

            Filesize

            176KB

          • memory/1312-146-0x000000000237E000-0x0000000002410000-memory.dmp

            Filesize

            584KB

          • memory/1536-163-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/1536-164-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            Filesize

            972KB

          • memory/1536-162-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/1536-186-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/1536-157-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/1536-185-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/2256-184-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2256-147-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2256-152-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2256-145-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2908-133-0x0000000002450000-0x000000000256B000-memory.dmp

            Filesize

            1.1MB

          • memory/2908-132-0x0000000000818000-0x00000000008AA000-memory.dmp

            Filesize

            584KB

          • memory/4952-137-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4952-135-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4952-136-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4952-142-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4952-138-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB