Analysis

  • max time kernel
    106s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    23/04/2022, 13:47

General

  • Target

    3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21.exe

  • Size

    726KB

  • MD5

    27f852cbe91fb933613a687a113c6046

  • SHA1

    4eb13258201e94618bc2c62eeb3cae93f1a5c3e9

  • SHA256

    3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21

  • SHA512

    818d0024b30ae19cd4e083ee31756eecae5f491a8aaf8bc9bc55a2fef7c03c6cd5c2e3a8ead2dd74a6c2b1c90f4dc6ec1719767f6ba89526fd6b7419c4e39d22

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/fhsgtsspen6/get.php

Attributes
  • extension

    .dmay

  • 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: 0458JIjdm

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 8 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 5 IoCs
  • 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.

  • 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\3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21.exe
    "C:\Users\Admin\AppData\Local\Temp\3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5028
    • C:\Users\Admin\AppData\Local\Temp\3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21.exe
      "C:\Users\Admin\AppData\Local\Temp\3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:952
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\da1603d7-d33d-40dd-aa35-75c5e84ae58f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2904
      • C:\Users\Admin\AppData\Local\Temp\3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21.exe
        "C:\Users\Admin\AppData\Local\Temp\3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4576
        • C:\Users\Admin\AppData\Local\Temp\3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21.exe
          "C:\Users\Admin\AppData\Local\Temp\3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3992
          • C:\Users\Admin\AppData\Local\062e8477-9c01-400d-8dc3-9bd3bc5f0328\build2.exe
            "C:\Users\Admin\AppData\Local\062e8477-9c01-400d-8dc3-9bd3bc5f0328\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1168
            • C:\Users\Admin\AppData\Local\062e8477-9c01-400d-8dc3-9bd3bc5f0328\build2.exe
              "C:\Users\Admin\AppData\Local\062e8477-9c01-400d-8dc3-9bd3bc5f0328\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:4612
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k appmodel -p -s camsvc
    1⤵
      PID:980

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\ProgramData\mozglue.dll

            Filesize

            133KB

            MD5

            8f73c08a9660691143661bf7332c3c27

            SHA1

            37fa65dd737c50fda710fdbde89e51374d0c204a

            SHA256

            3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

            SHA512

            0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

          • C:\ProgramData\nss3.dll

            Filesize

            1.2MB

            MD5

            bfac4e3c5908856ba17d41edcd455a51

            SHA1

            8eec7e888767aa9e4cca8ff246eb2aacb9170428

            SHA256

            e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

            SHA512

            2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

          • 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

            0e9e7c7f65933713c5b61fc3cba01e12

            SHA1

            0d2330732a460851a7bd9cce9a2629a9b6e995b0

            SHA256

            52df302263f7ba46e4556571170b4c2e403f1d47cbefd95966bd74aae0b4ecea

            SHA512

            3d55851379ead2005194d12d834841dce31d1eebf510effad25a6d9dabdd64feae255b20d0939c903dfbedae2398e7cfdd4724241d6abb2c894c80c4e394b65b

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

            Filesize

            396B

            MD5

            8d6cedbaddd0b4f62fd99f5a3df89657

            SHA1

            2eaf9dfe3d0517a52728f27f6ae9f11ac50ef119

            SHA256

            516eff84193761803cc68efee9d1548f25e15943f67bde457d8da731324cd7f6

            SHA512

            47bf815a50455a517cae608dfd0d129fe8b4d080d0cea573247177e6dd72ef01f6c617018c09e66eee51b9f8f6278e44a02af2d33496deaf0b9e8ba50e82c73f

          • C:\Users\Admin\AppData\Local\062e8477-9c01-400d-8dc3-9bd3bc5f0328\build2.exe

            Filesize

            368KB

            MD5

            ad1b502b6714c0a374b055332018974b

            SHA1

            672f4e44475177ddcb1bfa73db3c5dee0f031bc2

            SHA256

            f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

            SHA512

            0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

          • C:\Users\Admin\AppData\Local\062e8477-9c01-400d-8dc3-9bd3bc5f0328\build2.exe

            Filesize

            368KB

            MD5

            ad1b502b6714c0a374b055332018974b

            SHA1

            672f4e44475177ddcb1bfa73db3c5dee0f031bc2

            SHA256

            f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

            SHA512

            0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

          • C:\Users\Admin\AppData\Local\062e8477-9c01-400d-8dc3-9bd3bc5f0328\build2.exe

            Filesize

            368KB

            MD5

            ad1b502b6714c0a374b055332018974b

            SHA1

            672f4e44475177ddcb1bfa73db3c5dee0f031bc2

            SHA256

            f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

            SHA512

            0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

          • C:\Users\Admin\AppData\Local\da1603d7-d33d-40dd-aa35-75c5e84ae58f\3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21.exe

            Filesize

            726KB

            MD5

            27f852cbe91fb933613a687a113c6046

            SHA1

            4eb13258201e94618bc2c62eeb3cae93f1a5c3e9

            SHA256

            3102ac30e480ff27c8229e7879a855bff08605319972f48c1db8b056afea4b21

            SHA512

            818d0024b30ae19cd4e083ee31756eecae5f491a8aaf8bc9bc55a2fef7c03c6cd5c2e3a8ead2dd74a6c2b1c90f4dc6ec1719767f6ba89526fd6b7419c4e39d22

          • memory/952-132-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/952-136-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/952-131-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/952-134-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1168-158-0x0000000000628000-0x0000000000653000-memory.dmp

            Filesize

            172KB

          • memory/1168-153-0x0000000000628000-0x0000000000653000-memory.dmp

            Filesize

            172KB

          • memory/1168-159-0x00000000020B0000-0x00000000020F9000-memory.dmp

            Filesize

            292KB

          • memory/3992-149-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3992-144-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3992-142-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4576-143-0x0000000000B69000-0x0000000000BFA000-memory.dmp

            Filesize

            580KB

          • memory/4612-157-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/4612-155-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/4612-160-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/4612-161-0x0000000000400000-0x000000000044C000-memory.dmp

            Filesize

            304KB

          • memory/5028-133-0x000000000091E000-0x00000000009AF000-memory.dmp

            Filesize

            580KB

          • memory/5028-135-0x0000000002270000-0x000000000238B000-memory.dmp

            Filesize

            1.1MB