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
    145s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/08/2026, 18:34

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General

  • Target
    4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
  • Size 1.1MB
  • Sample260830-w71z6axfja
  • 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:4560
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\cafd8dbe-5748-4ee6-b86f-36d3fb33f630" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:4836
    • 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:4564
  • C:\Users\Admin\AppData\Local\cafd8dbe-5748-4ee6-b86f-36d3fb33f630\4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
    C:\Users\Admin\AppData\Local\cafd8dbe-5748-4ee6-b86f-36d3fb33f630\4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    PID:4840

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 310B
        • SHA256 782864bb0211c8655563d6cddedba106faaf0a8876cb3180ad5e3eaf74d56a06
        • 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 855705af97d3a5d55ed933a44f464e8b176d65064520294f8e4e8c2413067d3e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Size 174B
        • SHA256 10babfe214404892bc532afc4a5404fadfaadf7afc24d20babbbccbe4442fe7a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        B46811C17859FFB409CF0E904A4AA8F8
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
        • Size 170B
        • SHA256 7b0c13b2228947d030b1040abc18c252d44b5c21dbc3702e8e18215786e1b311
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        build3.exe
        • Path C:\Users\Admin\AppData\Local\54fc321b-2568-4639-aed6-bcf845ef181b\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\cafd8dbe-5748-4ee6-b86f-36d3fb33f630\4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32.exe
        • Size 1.1MB
        • SHA256 4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download