Analysis

  • max time kernel
    186s
  • max time network
    203s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    16-05-2022 03:23

General

  • Target

    dbf969f428f5a928d1977cfa4754ec12ab49eb67c9e31c483bb2710f23b14ffb.exe

  • Size

    765KB

  • MD5

    b472747014eeeaa6686efbf385f3cbad

  • SHA1

    9105f34af98546dc2a701f54ce75b5bb1439db3f

  • SHA256

    dbf969f428f5a928d1977cfa4754ec12ab49eb67c9e31c483bb2710f23b14ffb

  • SHA512

    a7794af27d1d9a1d49e5f1f0946914acf5d6438d86ad10510774bdfe98da11400c340c4f49d5bf6d58e55d7210c10404f6906b4b8e0403b96f72033f1cc51504

Score
10/10

Malware Config

Extracted

Family

djvu

C2

http://ugll.org/test1/get.php

Attributes
  • extension

    .byya

  • offline_id

    e8w5MeiBrZVoHLoloPm9MNlKBzXH70BB3B2KQ7t1

  • 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-2w6I3WpXEh 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: 0475JIjdm

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 5 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • 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 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dbf969f428f5a928d1977cfa4754ec12ab49eb67c9e31c483bb2710f23b14ffb.exe
    "C:\Users\Admin\AppData\Local\Temp\dbf969f428f5a928d1977cfa4754ec12ab49eb67c9e31c483bb2710f23b14ffb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1520
    • C:\Users\Admin\AppData\Local\Temp\dbf969f428f5a928d1977cfa4754ec12ab49eb67c9e31c483bb2710f23b14ffb.exe
      "C:\Users\Admin\AppData\Local\Temp\dbf969f428f5a928d1977cfa4754ec12ab49eb67c9e31c483bb2710f23b14ffb.exe"
      2⤵
        PID:2732

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1520-130-0x00000000048EF000-0x0000000004981000-memory.dmp

      Filesize

      584KB

    • memory/1520-131-0x0000000004990000-0x0000000004AAB000-memory.dmp

      Filesize

      1.1MB

    • memory/2732-132-0x0000000000000000-mapping.dmp

    • memory/2732-133-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2732-134-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2732-135-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2732-136-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB