Analysis

  • max time kernel
    106s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    24/04/2022, 00:06

General

  • Target

    f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30.exe

  • Size

    726KB

  • MD5

    e0e5f7f1feca73bc4607b9b73cc580b6

  • SHA1

    c31a3743648d28fbd7db6332674fb15d014708a3

  • SHA256

    f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30

  • SHA512

    223d9d5a8451636d7aefa1836ce5e58d78d687c85bd473622e7530c1091062e792193b235df1697213c21153530a9d60ee28ffedd5b08aa2f424b9074607e412

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.

  • 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\f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30.exe
    "C:\Users\Admin\AppData\Local\Temp\f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3664
    • C:\Users\Admin\AppData\Local\Temp\f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30.exe
      "C:\Users\Admin\AppData\Local\Temp\f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1708
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\8e45836b-c59f-4b67-b2c2-c033444db85e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:584
      • C:\Users\Admin\AppData\Local\Temp\f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30.exe
        "C:\Users\Admin\AppData\Local\Temp\f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3988
        • C:\Users\Admin\AppData\Local\Temp\f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30.exe
          "C:\Users\Admin\AppData\Local\Temp\f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2468
          • C:\Users\Admin\AppData\Local\322024a4-fe00-4dbb-951e-b265eaedd8ef\build2.exe
            "C:\Users\Admin\AppData\Local\322024a4-fe00-4dbb-951e-b265eaedd8ef\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4068
            • C:\Users\Admin\AppData\Local\322024a4-fe00-4dbb-951e-b265eaedd8ef\build2.exe
              "C:\Users\Admin\AppData\Local\322024a4-fe00-4dbb-951e-b265eaedd8ef\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:1276

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

          ff83b4096c847764c0b2282d466b461f

          SHA1

          b09fba41f64cbfec7ac579c8ac90efb40d0f2cdc

          SHA256

          bd7f747e5f8a677ac7368baa9fc8f5d7bffa40e489a6497eb776409bf2774e57

          SHA512

          4eba2e04f9f8220cf4457746ac9fbf21ff98d21aacdb51ba1248c42631558199948a57836629c26812e4ce712ab2e9f6205d7eaf752cbca9cb2d81c70938bcdb

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

          Filesize

          396B

          MD5

          ae9416cbdbbd70a47a3cdc111c5b2b89

          SHA1

          99831c423edfadf105249311f39d4e19d75a9a83

          SHA256

          7164bf43277ea3c663126037c93d1a58b5598572331ec3d21b3f11ccdcdc0e74

          SHA512

          f81a8b431e8eee2210e3cb28fa3d778a7eddc88f02f8a72fa160fe1dd84289be0394db04f90827565e2bfb87e78c7ce39d927768af2c091a287a5c5f906ac0de

        • C:\Users\Admin\AppData\Local\322024a4-fe00-4dbb-951e-b265eaedd8ef\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\322024a4-fe00-4dbb-951e-b265eaedd8ef\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\322024a4-fe00-4dbb-951e-b265eaedd8ef\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\8e45836b-c59f-4b67-b2c2-c033444db85e\f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30.exe

          Filesize

          726KB

          MD5

          e0e5f7f1feca73bc4607b9b73cc580b6

          SHA1

          c31a3743648d28fbd7db6332674fb15d014708a3

          SHA256

          f7ec3c53c11e4efcdb111b38a1ee42b4f14b8f5a64bb55012cbb448e6491db30

          SHA512

          223d9d5a8451636d7aefa1836ce5e58d78d687c85bd473622e7530c1091062e792193b235df1697213c21153530a9d60ee28ffedd5b08aa2f424b9074607e412

        • \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/1276-144-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/1276-146-0x0000000060900000-0x0000000060992000-memory.dmp

          Filesize

          584KB

        • memory/1276-145-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/1276-139-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/1276-143-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/1708-117-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1708-121-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1708-119-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1708-120-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2468-129-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2468-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2468-128-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3664-115-0x0000000000900000-0x0000000000994000-memory.dmp

          Filesize

          592KB

        • memory/3664-116-0x0000000000A70000-0x0000000000B8B000-memory.dmp

          Filesize

          1.1MB

        • memory/4068-142-0x00000000020A0000-0x00000000020E9000-memory.dmp

          Filesize

          292KB