Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/04/2024, 10:40

General

  • Target

    294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe

  • Size

    804KB

  • MD5

    f1cfe760eb1c2a1b4c59558871649106

  • SHA1

    e073e09713891f07988b3f1292df22e41753c412

  • SHA256

    294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b

  • SHA512

    7821f46cdf3b514365ea195051d3788cfd8e95c493528b5073a4eae2c5bbe37c79b1d30db99eab95f4331a3590fad7529926acf1f711fc3cf724d01a40ac9f9a

  • SSDEEP

    12288:dVB9zimo85giLd/aCLQpbZjI5bMyyGb6hew00iQTI1kxOk1T39gyneL9:dTGod6wMyVb6Qw0EI1Fk3oh

Malware Config

Extracted

Family

djvu

C2

http://sajdfue.com/test2/get.php

Attributes
  • extension

    .uazq

  • offline_id

    Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1

  • payload_url

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

    http://sajdfue.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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0860PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
    "C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1844
    • C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
      "C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:32
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\4fecf919-6600-4481-a645-0e96ffb38cad" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4928
      • C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
        "C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2500
        • C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
          "C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
            PID:4084
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4084 -s 568
              5⤵
              • Program crash
              PID:2204
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4084 -ip 4084
      1⤵
        PID:1164
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4076 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:1512

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\4fecf919-6600-4481-a645-0e96ffb38cad\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe

          Filesize

          804KB

          MD5

          f1cfe760eb1c2a1b4c59558871649106

          SHA1

          e073e09713891f07988b3f1292df22e41753c412

          SHA256

          294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b

          SHA512

          7821f46cdf3b514365ea195051d3788cfd8e95c493528b5073a4eae2c5bbe37c79b1d30db99eab95f4331a3590fad7529926acf1f711fc3cf724d01a40ac9f9a

        • memory/32-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/32-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/32-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/32-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/32-16-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1844-1-0x0000000004B00000-0x0000000004BA1000-memory.dmp

          Filesize

          644KB

        • memory/1844-2-0x0000000004BB0000-0x0000000004CCB000-memory.dmp

          Filesize

          1.1MB

        • memory/2500-20-0x0000000004A40000-0x0000000004AD5000-memory.dmp

          Filesize

          596KB

        • memory/4084-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4084-25-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4084-23-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB