Overview

overview

10

Static

static

10

4ad7b8d228...32.exe

windows10-2004-x64

10

4ad7b8d228...32.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    31/07/2026, 14:35

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General

  • Target
    4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
  • Size 1.1MB
  • Sample260731-rx86kaca32
  • SHA256 4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverydjvupersistenceransomware

Malware Config

Extracted

Family

  • djvu

C2

  • http://zexeq.com/test1/get.php

Attributes
  • extension

    .cdqw

  • offline_id

    mMsRxMUuXypapZbGOAfxD9pczHmW8zVRP7Pgjwt1

  • payload_url

    http://brusuax.com/dl/build2.exe

    http://zexeq.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-99MNqXMrdS Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0840ASdw

rsa_pubkey.plain

Signatures

  • Family: Djvu Ransomware

    Ransomware which is a variant of the STOP family.

    ransomwaredjvu
  • Detected Djvu ransomware 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
    discovery
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Looks up external IP address via web service 1 TTPs 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

    discovery
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
    "C:\Users\Admin\AppData\Local\Temp\4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3332
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\dc8b6851-3f5e-4b09-b415-9ee9cb7fae2e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:6000
    • C:\Users\Admin\AppData\Local\Temp\4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
      "C:\Users\Admin\AppData\Local\Temp\4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:4940
  • C:\Users\Admin\AppData\Local\dc8b6851-3f5e-4b09-b415-9ee9cb7fae2e\4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
    C:\Users\Admin\AppData\Local\dc8b6851-3f5e-4b09-b415-9ee9cb7fae2e\4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    PID:1524

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        70825F0EABF2526E540CA0F7C268D189
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\70825F0EABF2526E540CA0F7C268D189
        • Size 309B
        • SHA256 d89a97f62357d5921fbd303abe0911ddd4ba1d910bd2f0baf846013890992f35
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Size 1KB
        • SHA256 63b14543360f5e89942ea8d5113526e64fbc71c1207328f0136b3a495d921dd0
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        B46811C17859FFB409CF0E904A4AA8F8
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
        • Size 528B
        • SHA256 d2bb091268ade68ad8121d2184d0fbce128070156304bd4de312e6fbd267409c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        70825F0EABF2526E540CA0F7C268D189
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\70825F0EABF2526E540CA0F7C268D189
        • Size 192B
        • SHA256 edfc97430732d9109ad60710e825335d7fef3b345875930b87110bf8b452c520
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Size 174B
        • SHA256 26cf03b1a59d136204c7d273a5a93fb16998dca02e1d9d147b185cbe45fa8cd5
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        B46811C17859FFB409CF0E904A4AA8F8
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
        • Size 170B
        • SHA256 72c9d7eed0346186718900bafb0be8fdc7e9ab8f7569bf7e1f3edeed314dcd20
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        build3.exe
        • Path C:\Users\Admin\AppData\Local\8fdc7ccd-ee11-4909-b0da-6c0393bb0e5a\build3.exe
        • Size 437B
        • SHA256 ebfef207462c29030b8a06068c8cbf1cfeae1304813b9cdbfa2d705b314bf692
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        bowsakkdestx.txt
        • Path C:\Users\Admin\AppData\Local\bowsakkdestx.txt
        • Size 449B
        • SHA256 91faeb982f34313750a83d74c5464abe4e01357d1a7ea4253973509bc0e9d219
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
        • Path C:\Users\Admin\AppData\Local\dc8b6851-3f5e-4b09-b415-9ee9cb7fae2e\4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
        • Size 1.1MB
        • SHA256 4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download