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Analysis

  • max time kernel
    116s
  • max time network
    118s
  • platform
    windows10-1703_x64
  • resource
    win10-20220901-en
  • resource tags

    arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
  • submitted
    08/09/2022, 00:32

General

  • Target

    7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02.exe

  • Size

    777KB

  • MD5

    66cc9fbec507f68ed5a09f518bc775ed

  • SHA1

    16c964678f51f0e33d5e288b4e7750a5cb687f7f

  • SHA256

    7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02

  • SHA512

    024e5a2bc49df64d1b3a8b39d026643074ac73d34dac6d4b26e02176199378cd4f817d08b5f48ea0702c6b536f3c2666243c2c3b6830f35ae5f4f40747d19215

  • SSDEEP

    24576:Qn/Uc6+rxsOtAiu7TJPBkLnWYbE56l8ahmp:Qnx1srJZD8au8ahmp

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .mmpu

  • offline_id

    yd6oYv6aBN90yFzTWdZ34sXSXtXiauzOLXZyWht1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://acacaca.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-xuPJqoyzQE 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: 0554Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02.exe
    "C:\Users\Admin\AppData\Local\Temp\7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2704
    • C:\Users\Admin\AppData\Local\Temp\7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02.exe
      "C:\Users\Admin\AppData\Local\Temp\7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4736
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\72ade55a-64b9-4a06-a21c-db1dc87109f4" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3928
      • C:\Users\Admin\AppData\Local\Temp\7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02.exe
        "C:\Users\Admin\AppData\Local\Temp\7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4756
        • C:\Users\Admin\AppData\Local\Temp\7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02.exe
          "C:\Users\Admin\AppData\Local\Temp\7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3144
          • C:\Users\Admin\AppData\Local\fe6f4fad-e233-435f-b1f5-bd4ee671b410\build2.exe
            "C:\Users\Admin\AppData\Local\fe6f4fad-e233-435f-b1f5-bd4ee671b410\build2.exe"
            5⤵
            • Executes dropped EXE
            PID:4280

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    2KB

    MD5

    9cd19ed49787d5bf969ac81a2dbf7ce9

    SHA1

    4ff7b3372f9778f210014bdd7989d6f9442caa37

    SHA256

    5e317a2565c34c5d13efedd5a58537a9f255df17457a567e5fcc061962475b22

    SHA512

    589a98c719b6f67e875cc05438d4801d8025e8661bc30d51351df864314f0f4e5f35aa27422954a43eddd9ca04903043b46a47335311586f709e8eeae87cf7b9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    1KB

    MD5

    7c27ffae0cbd6d55b86f387667635294

    SHA1

    6df10a537a970852086711da85ae84f7355bff72

    SHA256

    b6a9400010fea1af51104c2b48fdd4383d8b7a81bd62a22c188db3cdb7413503

    SHA512

    140752fd448ed5cd01c5463d67b7dd2c5c111fd4256d3686b792bc0ff788bed49fdfe901402fdb080b9a6c0789725dda6256280120fadc5aca1f127a552e13d6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    488B

    MD5

    45ba889bc03744b344c86bfa37faf452

    SHA1

    586a152f3da6366983799c5ad421896861845d72

    SHA256

    22f597e71997734424f25a2fad2b8192d9f7afac60873a5d235f42cc480229d0

    SHA512

    b2306a75bfd61165e8687ed377a62cf8aef9a4526bc1cc68acb62514de858b82e21c9628aca4f60eb26dafd7daab426ba904d3c8703fcc44253ae97eaef94830

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    482B

    MD5

    2874821a4920ba558a516a34637a064d

    SHA1

    165e65c3ab8cfda53e0628ef3c71380e3457fded

    SHA256

    3a734ecc813298a704b52def82b8e98fa7e60bbd3a45f5a88c6e769c5f0b2867

    SHA512

    226e52d5da5eeb93a1f98a386e9bd4b037a40c0b19759d8a318a5e6b9cd71d4f8ceaa5eff32efa046673cd1e22540c9829bb2ce9ff86a9051eec41f9e8431dc1

  • C:\Users\Admin\AppData\Local\72ade55a-64b9-4a06-a21c-db1dc87109f4\7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02.exe

    Filesize

    777KB

    MD5

    66cc9fbec507f68ed5a09f518bc775ed

    SHA1

    16c964678f51f0e33d5e288b4e7750a5cb687f7f

    SHA256

    7f9b3ea0c203cc78f09f4df8f9c16593d991ec2ad92a40f85daa7fa6d828be02

    SHA512

    024e5a2bc49df64d1b3a8b39d026643074ac73d34dac6d4b26e02176199378cd4f817d08b5f48ea0702c6b536f3c2666243c2c3b6830f35ae5f4f40747d19215

  • C:\Users\Admin\AppData\Local\fe6f4fad-e233-435f-b1f5-bd4ee671b410\build2.exe

    Filesize

    383KB

    MD5

    8d7db6982df46c3b0f0cc879d892c08a

    SHA1

    64e3d7ab4793aeb05d18a82159c579e05c45fd71

    SHA256

    116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

    SHA512

    0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

  • C:\Users\Admin\AppData\Local\fe6f4fad-e233-435f-b1f5-bd4ee671b410\build2.exe

    Filesize

    383KB

    MD5

    8d7db6982df46c3b0f0cc879d892c08a

    SHA1

    64e3d7ab4793aeb05d18a82159c579e05c45fd71

    SHA256

    116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

    SHA512

    0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

  • memory/2704-139-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-143-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-127-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-128-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-130-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-129-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-131-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-132-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-134-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-133-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-136-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-137-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-138-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-125-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-140-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-141-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-142-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-126-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-145-0x0000000002680000-0x000000000271C000-memory.dmp

    Filesize

    624KB

  • memory/2704-144-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-146-0x0000000002720000-0x000000000283B000-memory.dmp

    Filesize

    1.1MB

  • memory/2704-147-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-148-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-149-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-120-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-121-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-122-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-124-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/2704-123-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/3144-350-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3144-387-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4736-157-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4736-160-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-161-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-159-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-162-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-163-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-164-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-165-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-167-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-168-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-169-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-166-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-170-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-172-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-173-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-171-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-174-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-176-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-175-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-177-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-178-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-179-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-180-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-181-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-182-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-183-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-184-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-185-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-186-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-187-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-158-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-156-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-155-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-154-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-153-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-152-0x00000000773D0000-0x000000007755E000-memory.dmp

    Filesize

    1.6MB

  • memory/4736-150-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4736-197-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4736-251-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB