Analysis

  • max time kernel
    137s
  • max time network
    142s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    24/04/2022, 07:56

General

  • Target

    bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37.exe

  • Size

    727KB

  • MD5

    bf96fd3f3527ea84786e7f2cb21a58d3

  • SHA1

    e2e5a6f6669e2953eebf8a68297245a1c87df131

  • SHA256

    bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37

  • SHA512

    cf36acb21291fd174b2537a895ac191d511f48cc62a66dda35e1be3a8cc0bd8ae2a6cd6bd8fa41fc2d3e377dd0036163c2c2a8fdb80b228b677bcb68879e7e0b

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\bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37.exe
    "C:\Users\Admin\AppData\Local\Temp\bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3980
    • C:\Users\Admin\AppData\Local\Temp\bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37.exe
      "C:\Users\Admin\AppData\Local\Temp\bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1744
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a0731ca4-3bae-41a4-a3ef-9b2f7a824e4e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4064
      • C:\Users\Admin\AppData\Local\Temp\bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37.exe
        "C:\Users\Admin\AppData\Local\Temp\bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4072
        • C:\Users\Admin\AppData\Local\Temp\bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37.exe
          "C:\Users\Admin\AppData\Local\Temp\bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1788
          • C:\Users\Admin\AppData\Local\df45ee6f-6205-4ea9-931f-5eeafb9a889f\build2.exe
            "C:\Users\Admin\AppData\Local\df45ee6f-6205-4ea9-931f-5eeafb9a889f\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2572
            • C:\Users\Admin\AppData\Local\df45ee6f-6205-4ea9-931f-5eeafb9a889f\build2.exe
              "C:\Users\Admin\AppData\Local\df45ee6f-6205-4ea9-931f-5eeafb9a889f\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2668

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

          d9c694c2d95c6812aa0be903de46da96

          SHA1

          df1a733a9c6c27997c798ae4c5715cabe1ffa5e4

          SHA256

          f6f85bc0d1770803a206fbfb83c4cb888b3a24b494feac38baa3ea764cda37c0

          SHA512

          97a2eddf197aa74d1d05241008ead092f836b561bc1ad1d731d91db23d6dcce7a65d3dc1609384a3ad3fd5c858bae6c3a4361588b5a965ebf233f14410864793

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          Filesize

          4KB

          MD5

          f7dcb24540769805e5bb30d193944dce

          SHA1

          e26c583c562293356794937d9e2e6155d15449ee

          SHA256

          6b88c6ac55bbd6fea0ebe5a760d1ad2cfce251c59d0151a1400701cb927e36ea

          SHA512

          cb5ad678b0ef642bf492f32079fe77e8be20c02de267f04b545df346b25f3e4eb98bb568c4c2c483bb88f7d1826863cb515b570d620766e52476c8ee2931ea94

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

          Filesize

          471B

          MD5

          ad8e032271f02af2a955ce10661cc3a8

          SHA1

          967d1bd99bea34c3110cc75c0c0d8b8565eae9f9

          SHA256

          d5081bf75d530e9336a6da0f9142bc10f4d06368c365cf0e33f7c99b0f643ce8

          SHA512

          bc69dfb03284cf1b8d172ff55938f238b928a0c7846306d8232ab697f54c771a9acf8b0e04a85e149da87ea8cfd9395605d0d95afc30eae1793e91399aa7eef7

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

          Filesize

          402B

          MD5

          4a4f59b52e489a9cac10f99dc9d474e8

          SHA1

          2e600e9eb8735b67f6727bf5329051ce114807c7

          SHA256

          b9f822b81c186b4153445fdd8314a326e22f44454b360e69b9b54f7b911e557a

          SHA512

          2b8fb0c2d7dc51cb7a0a8261b54ed8e8a316a0e53944cfe2277e0887c18c97713521dc78b7ee8d4e7c07576551b3d962f84748dabf3119572377ea15b8044d5c

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          Filesize

          340B

          MD5

          486dd764257e68bc3208256d7d1245a7

          SHA1

          2b8146e9bea376f5c41523ab4f27145dc0ea212d

          SHA256

          8f150b779ae6c949dffed4dac889e51deeaf1b9f63c284142092cfbb30c5ea59

          SHA512

          8fb597fe16fe7763ac3ff13ce36e88e4c50d8c34659af34480f3a74d3ed7baf78e8f502245054e30dcae2d7ea1535a97644197acb4356948cea3e902ebc90c96

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

          Filesize

          396B

          MD5

          11636bada01f3354b86bd0467b83b903

          SHA1

          b410448b213e70f954617a93508ed0ec9307e4a8

          SHA256

          7a84a899eb9be85d5fc50c9cc279339863f3ef9f199533038974815172c0ca62

          SHA512

          7fb05d6c75f58a902830a03efe7cbe752f68e8cbab4956b0cd934c4d21fc6ff467b05eaf830e097f233f03598697e888fb86545b19b809ea9a3179ad668c5f44

        • C:\Users\Admin\AppData\Local\a0731ca4-3bae-41a4-a3ef-9b2f7a824e4e\bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37.exe

          Filesize

          727KB

          MD5

          bf96fd3f3527ea84786e7f2cb21a58d3

          SHA1

          e2e5a6f6669e2953eebf8a68297245a1c87df131

          SHA256

          bc6493d82f58e346d6842f9db60c23e70ca118e9316f550449cfa34b524c1d37

          SHA512

          cf36acb21291fd174b2537a895ac191d511f48cc62a66dda35e1be3a8cc0bd8ae2a6cd6bd8fa41fc2d3e377dd0036163c2c2a8fdb80b228b677bcb68879e7e0b

        • C:\Users\Admin\AppData\Local\df45ee6f-6205-4ea9-931f-5eeafb9a889f\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\df45ee6f-6205-4ea9-931f-5eeafb9a889f\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\df45ee6f-6205-4ea9-931f-5eeafb9a889f\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • \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/1744-122-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1744-121-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1744-117-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1744-119-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1788-135-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1788-130-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1788-129-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2572-144-0x0000000002080000-0x00000000020C9000-memory.dmp

          Filesize

          292KB

        • memory/2668-140-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2668-143-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2668-145-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2668-146-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/3980-120-0x00000000021C0000-0x00000000022DB000-memory.dmp

          Filesize

          1.1MB