Analysis

  • max time kernel
    141s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    05/05/2022, 12:31

General

  • Target
    7faf3f5398541f39d4cf7664c6a4672a.exe
  • Size 795KB
  • Sample220505-pp14waafdn
  • SHA256 f9335c2ce7dfc83aedb887c855654af5f5f9f7e5317fdfd50e5e60a11dcdbed7
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • djvu

C2
  • http://ugll.org/test1/get.php

Attributes
  • extension

    .sijr

  • offline_id

    QcVY9rkapJoL3nQkZAsvfTFVYLmscrM1v1QxGWt1

  • payload_url

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

    http://ugll.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-6Ti2DxXR3I 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: 0470JIjdm

rsa_pubkey.plain

Extracted

Family
  • vidar

Version
  • 52

Botnet
  • 517

C2
  • https://t.me/hollandracing

  • https://busshi.moe/@ronxik321

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.

  • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

  • suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

    suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

  • suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

    suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

  • 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\7faf3f5398541f39d4cf7664c6a4672a.exe
    "C:\Users\Admin\AppData\Local\Temp\7faf3f5398541f39d4cf7664c6a4672a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2200
    • C:\Users\Admin\AppData\Local\Temp\7faf3f5398541f39d4cf7664c6a4672a.exe
      "C:\Users\Admin\AppData\Local\Temp\7faf3f5398541f39d4cf7664c6a4672a.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3216
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f52c840a-5677-48ac-8837-fb253de03a82" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3404
      • C:\Users\Admin\AppData\Local\Temp\7faf3f5398541f39d4cf7664c6a4672a.exe
        "C:\Users\Admin\AppData\Local\Temp\7faf3f5398541f39d4cf7664c6a4672a.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2148
        • C:\Users\Admin\AppData\Local\Temp\7faf3f5398541f39d4cf7664c6a4672a.exe
          "C:\Users\Admin\AppData\Local\Temp\7faf3f5398541f39d4cf7664c6a4672a.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3572
          • C:\Users\Admin\AppData\Local\1051746e-dab6-4b06-b818-e6ff94c18560\build2.exe
            "C:\Users\Admin\AppData\Local\1051746e-dab6-4b06-b818-e6ff94c18560\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2768
            • C:\Users\Admin\AppData\Local\1051746e-dab6-4b06-b818-e6ff94c18560\build2.exe
              "C:\Users\Admin\AppData\Local\1051746e-dab6-4b06-b818-e6ff94c18560\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:4164

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 727B
        • SHA256 26317c951b8612f1ef5909ef04a5304fe6870535ca0207baeb623c71e1c14db7
        • MD5 SHA1 SHA512

        B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
        • Size 471B
        • SHA256 4be26abff75d8c3731ac17412c34cda9be8dc00b02cb8c9da2a46231d9966dbf
        • MD5 SHA1 SHA512

        07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
        • Size 402B
        • SHA256 03edb75f7ea48eab303c40912b434be5a97381bf3f8c9b32c4c7bc115986459a
        • MD5 SHA1 SHA512

        B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
        • Size 396B
        • SHA256 de3e6601c0923445a1fe71365e26c5d7f8200534c8e400dacd3f57d1a82b3b6e
        • MD5 SHA1 SHA512

        build2.exe

        • Path C:\Users\Admin\AppData\Local\1051746e-dab6-4b06-b818-e6ff94c18560\build2.exe
        • Size 380KB
        • SHA256 c9c82de52be77596153f54b192da4e91e671cc5ad01d6bfe0011fd8e9d5723fa
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\1051746e-dab6-4b06-b818-e6ff94c18560\build2.exe
        • Size 380KB
        • SHA256 c9c82de52be77596153f54b192da4e91e671cc5ad01d6bfe0011fd8e9d5723fa
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\1051746e-dab6-4b06-b818-e6ff94c18560\build2.exe
        • Size 380KB
        • SHA256 c9c82de52be77596153f54b192da4e91e671cc5ad01d6bfe0011fd8e9d5723fa
        • MD5 SHA1 SHA512 SSDEEP

        7faf3f5398541f39d4cf7664c6a4672a.exe

        • Path C:\Users\Admin\AppData\Local\f52c840a-5677-48ac-8837-fb253de03a82\7faf3f5398541f39d4cf7664c6a4672a.exe
        • Size 795KB
        • SHA256 f9335c2ce7dfc83aedb887c855654af5f5f9f7e5317fdfd50e5e60a11dcdbed7
        • MD5 SHA1 SHA512 SSDEEP

        memory/2148-143-0x00000000009D2000-0x0000000000A63000-memory.dmp

        memory/2200-133-0x0000000000948000-0x00000000009D9000-memory.dmp

        memory/2200-134-0x00000000021C0000-0x00000000022DB000-memory.dmp

        memory/2768-158-0x00000000020D0000-0x0000000002119000-memory.dmp

        memory/2768-157-0x0000000000608000-0x0000000000633000-memory.dmp

        memory/3216-135-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3216-136-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3216-131-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3216-132-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3572-144-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3572-142-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3572-149-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/4164-156-0x0000000000400000-0x000000000044C000-memory.dmp

        memory/4164-159-0x0000000000400000-0x000000000044C000-memory.dmp

        memory/4164-160-0x0000000000400000-0x000000000044C000-memory.dmp

        memory/4164-161-0x0000000060900000-0x0000000060992000-memory.dmp

        memory/4164-154-0x0000000000400000-0x000000000044C000-memory.dmp