Analysis

  • max time kernel
    103s
  • max time network
    129s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    23/04/2022, 17:32

General

  • Target

    1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a.exe

  • Size

    726KB

  • MD5

    62c8f2fadd8461b926048164b8dd9725

  • SHA1

    702686913160f1dc941edc6ccb5e8608d5a7d1bf

  • SHA256

    1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a

  • SHA512

    fecae2ff0c3d45e0d8a424527a1f2cc501f1cd943bc50f588b1ae1970b7ee0c49112cd19a447dc94a67fbe2179ac9c76a0cab4480992cc97dca3606b7bd98f18

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\1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a.exe
    "C:\Users\Admin\AppData\Local\Temp\1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2380
    • C:\Users\Admin\AppData\Local\Temp\1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a.exe
      "C:\Users\Admin\AppData\Local\Temp\1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2556
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e24fcbb0-bba9-4b15-8223-44a11201789d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3548
      • C:\Users\Admin\AppData\Local\Temp\1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a.exe
        "C:\Users\Admin\AppData\Local\Temp\1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4716
        • C:\Users\Admin\AppData\Local\Temp\1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a.exe
          "C:\Users\Admin\AppData\Local\Temp\1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4568
          • C:\Users\Admin\AppData\Local\67a746d2-8127-4e24-8191-fe755326929c\build2.exe
            "C:\Users\Admin\AppData\Local\67a746d2-8127-4e24-8191-fe755326929c\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4520
            • C:\Users\Admin\AppData\Local\67a746d2-8127-4e24-8191-fe755326929c\build2.exe
              "C:\Users\Admin\AppData\Local\67a746d2-8127-4e24-8191-fe755326929c\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2364

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

          d959c084665ec1cf8d0a757906f1c1cd

          SHA1

          af8f2b140844c11ad8792f7fc911a4ad48f6d731

          SHA256

          ab6898eb52ca9ec087e718714df649397902d22580aaf32f4d0cdadd4440acc1

          SHA512

          ac6c2e2d11a2848174f3b5abfd3b22a75691bf0d476b7c25b01b40200b1189b22ba9a01614fde65790a3c56832a4338c3ba3a921ac72b174fd5b455157af7073

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

          Filesize

          396B

          MD5

          73d8800a0e0cc2c2af1a0c3b5a43e066

          SHA1

          3525375647d702de44651c6b154258f3478955e4

          SHA256

          fd1dab4fec74248fa778fa48e03de3c804ce2957f29ed7bfd27859e108e70eb5

          SHA512

          22ebc2748ed58adef315f21c28c1c4e17d4ee997c9e5f3f08fb4458ade216db360a89061f9e62dbfab69095c755987295d3d817d645adc8c01ab9dd0b0d5aad3

        • C:\Users\Admin\AppData\Local\67a746d2-8127-4e24-8191-fe755326929c\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\67a746d2-8127-4e24-8191-fe755326929c\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\67a746d2-8127-4e24-8191-fe755326929c\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\e24fcbb0-bba9-4b15-8223-44a11201789d\1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a.exe

          Filesize

          726KB

          MD5

          62c8f2fadd8461b926048164b8dd9725

          SHA1

          702686913160f1dc941edc6ccb5e8608d5a7d1bf

          SHA256

          1492aa67782f4720eb61f3953156e4a99b0941ec6da8f95ad20ce0601fc4316a

          SHA512

          fecae2ff0c3d45e0d8a424527a1f2cc501f1cd943bc50f588b1ae1970b7ee0c49112cd19a447dc94a67fbe2179ac9c76a0cab4480992cc97dca3606b7bd98f18

        • \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/2364-148-0x0000000060900000-0x0000000060992000-memory.dmp

          Filesize

          584KB

        • memory/2364-147-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2364-143-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2364-140-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2364-146-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2380-121-0x0000000002290000-0x00000000023AB000-memory.dmp

          Filesize

          1.1MB

        • memory/2556-123-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-120-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-122-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-118-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4520-144-0x0000000000746000-0x0000000000771000-memory.dmp

          Filesize

          172KB

        • memory/4520-145-0x00000000020D0000-0x0000000002119000-memory.dmp

          Filesize

          292KB

        • memory/4568-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4568-131-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4568-130-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB