Analysis

  • max time kernel
    145s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-10-2024 13:03

General

  • Target

    b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe

  • Size

    754KB

  • MD5

    51cdffb93a6be165bbf7657410530d0d

  • SHA1

    a479e69408af50ad5b5e12539fad8a98316f8fd0

  • SHA256

    b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70

  • SHA512

    1e6135c8399ab9289fa97afbf87a73b87a8d4850d73bffa67c41d38137723a0dcacc32c91340c260bf49bd2e2116d559fba218152d8ad6ab4e20ea0d6ea0d49c

  • SSDEEP

    12288:46bRBPCVNzRrurNBVORUzCpdMtyfwbqBS9H4Tk53eiYaNLNvR:lbiVNpuFORu8dMMfbU7Yap

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .looy

  • offline_id

    1eSPzWRaNslCgtjBZfL5pzvovoiaVI4IZSnvAwt1

  • 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/3ed7a617738550b0a00c5aa231c0752020240316170955/d71ce1 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: 0858PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 17 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 3 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
    "C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3692
    • C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
      "C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2392
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\333735bd-7394-4dd9-a0f8-ed654001c574" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:4588
      • C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
        "C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1884
        • C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
          "C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:5004

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    67e486b2f148a3fca863728242b6273e

    SHA1

    452a84c183d7ea5b7c015b597e94af8eef66d44a

    SHA256

    facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

    SHA512

    d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    e2ce4cbfede33b5db0ea35ba2ad0ee7e

    SHA1

    8c641cf3ae45deae574aa4145e627d471f580eb3

    SHA256

    d6501f90ef6a8b5e2c6f467b4c34cfcec6ab049cd9a5d9a433cf5f1d8bc22862

    SHA512

    4629ce2cea67af501f49601deec9997e92ac3000ecb71f2fae4e063ca8b2df9f730fbc6c293cb7fc1057f45a82e99611b677dff745cd31cd0ea3b83c4ed44fd1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    7fb32533998a369fee77023fec4f809b

    SHA1

    62de2a84e5954d82de51d28c29067d3d23604ded

    SHA256

    7f11cdd779578393f0efbc6cc3a99e6be86c4fe7fffd70d6529e1d183c4cf2f3

    SHA512

    622c3058db9455ec39dcec0e8f5e08921fde64b18c5e20b6be8d2d406afebb7e315f97f3c867bb9c470c34e14ff67dc3a8502dc40b400ef961778b306b0bf7c3

  • C:\Users\Admin\AppData\Local\333735bd-7394-4dd9-a0f8-ed654001c574\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe

    Filesize

    754KB

    MD5

    51cdffb93a6be165bbf7657410530d0d

    SHA1

    a479e69408af50ad5b5e12539fad8a98316f8fd0

    SHA256

    b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70

    SHA512

    1e6135c8399ab9289fa97afbf87a73b87a8d4850d73bffa67c41d38137723a0dcacc32c91340c260bf49bd2e2116d559fba218152d8ad6ab4e20ea0d6ea0d49c

  • memory/1884-21-0x0000000000400000-0x00000000004FC000-memory.dmp

    Filesize

    1008KB

  • memory/1884-25-0x0000000000400000-0x00000000004FC000-memory.dmp

    Filesize

    1008KB

  • memory/2392-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2392-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2392-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2392-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2392-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3692-1-0x0000000002240000-0x00000000022D5000-memory.dmp

    Filesize

    596KB

  • memory/3692-2-0x0000000002370000-0x000000000248B000-memory.dmp

    Filesize

    1.1MB

  • memory/5004-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5004-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5004-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5004-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5004-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5004-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5004-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5004-41-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5004-40-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5004-42-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5004-43-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB