Analysis

  • max time kernel
    88s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/01/2023, 09:56

General

  • Target
    1da519e1cf49bb501127d725cd71d13d.exe
  • Size 704KB
  • Sample230121-lycwvsdf4y
  • SHA256 5836d928711e1b683205f1c8fa779a05e47a52fd489422cef57680d0ea476a4e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • djvu

C2
  • http://drampik.com/test1/get.php

Attributes
  • extension

    .mzqw

  • offline_id

    ex4uvTKsM2vEkIcr3MjXi2C6v27h1mS682iUXGt1

  • payload_url

    http://uaery.top/dl/build2.exe

    http://drampik.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-cud8EGMtyB 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: 0635JOsie

rsa_pubkey.plain

Extracted

Family
  • vidar

Version
  • 2.1

Botnet
  • 19

C2
  • https://t.me/jetbim

  • https://steamcommunity.com/profiles/76561199471266194

Attributes
  • profile_id

    19

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 4 IoCs
  • Checks computer location settings 2 TTPs 3 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.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1da519e1cf49bb501127d725cd71d13d.exe
    "C:\Users\Admin\AppData\Local\Temp\1da519e1cf49bb501127d725cd71d13d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4584
    • C:\Users\Admin\AppData\Local\Temp\1da519e1cf49bb501127d725cd71d13d.exe
      "C:\Users\Admin\AppData\Local\Temp\1da519e1cf49bb501127d725cd71d13d.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1592
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\51a78519-8eb3-46e1-bedb-b9a6b1ff3182" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2236
      • C:\Users\Admin\AppData\Local\Temp\1da519e1cf49bb501127d725cd71d13d.exe
        "C:\Users\Admin\AppData\Local\Temp\1da519e1cf49bb501127d725cd71d13d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4280
        • C:\Users\Admin\AppData\Local\Temp\1da519e1cf49bb501127d725cd71d13d.exe
          "C:\Users\Admin\AppData\Local\Temp\1da519e1cf49bb501127d725cd71d13d.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1264
          • C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build2.exe
            "C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2172
            • C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build2.exe
              "C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build2.exe"
              6⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4716
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:2428
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:5100
          • C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build3.exe
            "C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2132
            • C:\Windows\SysWOW64\schtasks.exe
              /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
              6⤵
              • Creates scheduled task(s)
              PID:1756
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:3572
    • C:\Windows\SysWOW64\schtasks.exe
      /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4656

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        mozglue.dll

        • Path C:\ProgramData\mozglue.dll
        • Size 133KB
        • SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
        • MD5 SHA1 SHA512 SSDEEP

        nss3.dll

        • Path C:\ProgramData\nss3.dll
        • Size 1.2MB
        • SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
        • MD5 SHA1 SHA512 SSDEEP

        07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
        • Size 2KB
        • SHA256 971130ecefcbbbf90c16c913c8d56cb3bb9765edaf09490c6289dcd7faed47f0
        • MD5 SHA1 SHA512

        B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
        • Size 1KB
        • SHA256 dc6f87cc6bf6c82609944c30dfa67249c8cbce298a968cf03e791c62c9ec25c2
        • MD5 SHA1 SHA512

        07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
        • Size 488B
        • SHA256 c84d6b9594b498e8b99670846ef2aaf2d31ed37177c224623c61d15432b1a90e
        • MD5 SHA1 SHA512

        B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
        • Size 482B
        • SHA256 4b0f75d5d0b7736137b1ff0495d80a5ff9461f95298afb415558e08a14ac027d
        • MD5 SHA1 SHA512

        build2.exe

        • Path C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build2.exe
        • Size 343KB
        • SHA256 43a80ac218836ddd131f7377d0bef4fca5c3a1eb3fe05a63c69ce283dc32931e
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build2.exe
        • Size 343KB
        • SHA256 43a80ac218836ddd131f7377d0bef4fca5c3a1eb3fe05a63c69ce283dc32931e
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build2.exe
        • Size 343KB
        • SHA256 43a80ac218836ddd131f7377d0bef4fca5c3a1eb3fe05a63c69ce283dc32931e
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build3.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path C:\Users\Admin\AppData\Local\2d52dcb6-02ad-44c3-b062-51c01da15552\build3.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        1da519e1cf49bb501127d725cd71d13d.exe

        • Path C:\Users\Admin\AppData\Local\51a78519-8eb3-46e1-bedb-b9a6b1ff3182\1da519e1cf49bb501127d725cd71d13d.exe
        • Size 704KB
        • SHA256 5836d928711e1b683205f1c8fa779a05e47a52fd489422cef57680d0ea476a4e
        • MD5 SHA1 SHA512 SSDEEP

        mstsca.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        mstsca.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        memory/1264-152-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1264-168-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1264-145-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1264-147-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1592-138-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1592-142-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1592-136-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1592-133-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1592-134-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/2172-162-0x0000000002060000-0x00000000020B6000-memory.dmp

        memory/2172-159-0x000000000048E000-0x00000000004BF000-memory.dmp

        memory/2172-193-0x0000000002060000-0x00000000020B6000-memory.dmp

        memory/4280-146-0x0000000004884000-0x0000000004916000-memory.dmp

        memory/4584-135-0x000000000498A000-0x0000000004A1C000-memory.dmp

        memory/4584-137-0x0000000004A80000-0x0000000004B9B000-memory.dmp

        memory/4716-161-0x0000000000400000-0x000000000046A000-memory.dmp

        memory/4716-169-0x0000000060900000-0x0000000060992000-memory.dmp

        memory/4716-191-0x0000000000400000-0x000000000046A000-memory.dmp

        memory/4716-167-0x0000000000400000-0x000000000046A000-memory.dmp

        memory/4716-160-0x0000000000400000-0x000000000046A000-memory.dmp

        memory/4716-157-0x0000000000400000-0x000000000046A000-memory.dmp