Analysis

  • max time kernel
    70s
  • max time network
    147s
  • platform
    windows10-1703_x64
  • resource
    win10-20220901-en
  • resource tags

    arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
  • submitted
    10/10/2022, 06:45

General

  • Target

    783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813.exe

  • Size

    790KB

  • MD5

    d22496b92fa86f2233003edfe5b83fd1

  • SHA1

    c3b395a05b9f9dd69acf6662a410e3a0865c1df5

  • SHA256

    783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813

  • SHA512

    20571f3bfcf1ca7f445890c4834c4c2339c3ee56530fc9926c53cd9c7aec8237a7a43a5ad44ce6ec12663ea167f1e6c02ca29304b2dfc71ebe797b654e17333f

  • SSDEEP

    12288:82krEHjGP9tyBK4hVX3ZSjc7qN1H1fd1avknRicLiQVF5cpAd:82krEHDBK4jJS1Nh1fXRiEiQV0pA

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/lancer/get.php

Attributes
  • extension

    .towz

  • offline_id

    SSHsHMHGmSIhrz50VnIxLJJX15osxEQY6iXedXt1

  • payload_url

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

    http://winnlinne.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-Kbx8mJatqN 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: 0577Jhyjd

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 2 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.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813.exe
    "C:\Users\Admin\AppData\Local\Temp\783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4944
    • C:\Users\Admin\AppData\Local\Temp\783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813.exe
      "C:\Users\Admin\AppData\Local\Temp\783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1004
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\4251ab14-0782-4d39-b304-f9f99e2a2e5f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2760
      • C:\Users\Admin\AppData\Local\Temp\783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813.exe
        "C:\Users\Admin\AppData\Local\Temp\783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4572
        • C:\Users\Admin\AppData\Local\Temp\783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813.exe
          "C:\Users\Admin\AppData\Local\Temp\783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4992
          • C:\Users\Admin\AppData\Local\fb2f4f0c-7ce2-4c89-94a7-cba034363b39\build3.exe
            "C:\Users\Admin\AppData\Local\fb2f4f0c-7ce2-4c89-94a7-cba034363b39\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4712
            • C:\Windows\SysWOW64\schtasks.exe
              /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
              6⤵
              • Creates scheduled task(s)
              PID:444
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4756
    • C:\Windows\SysWOW64\schtasks.exe
      /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
      2⤵
      • Creates scheduled task(s)
      PID:340

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

          6f59ed058aa06aaf5ec6213b955aabd4

          SHA1

          baf7b828a563b8fb6111e4ce35e0055575ad80b4

          SHA256

          2d82e2629fa2e08f28b43b15da43dff56c7f4b23b39d66109c7c61998e35b4d5

          SHA512

          6b0f041dafb98b9eaf70ac0d20a98c56e1c42231c4a4ae6e11582b20d20bf8f96dfd7747739a10d77368994441adb0e181b356f8569697b1f22ab4fe931170ce

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

          Filesize

          1KB

          MD5

          0698dbc93ba7b6bef73ba316695f8317

          SHA1

          a444078ff1eb7c88f52cb4e324365926b491ed47

          SHA256

          263292040d77903899257c1d21201dc64d6f8d6b5a1d945cd5b28d0124d7906c

          SHA512

          ebacaa7009aebb88199cd70fd0bb3afe69ed300318cb633edd1c0404e42aef829617f589bcbad6cb7ab4bd0a8ae87f7df1435c786184ecc5de61c8fc6950a900

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

          Filesize

          488B

          MD5

          83b16f04e0170656f1235b44e802929a

          SHA1

          8cdb3a0e14baf284e414b3986fba0719062ac440

          SHA256

          ba49d0baf4f2e5703f87af77f8c274a240d1b70bde04e31105772cfc6f68ae97

          SHA512

          9af73c75c8d5afec07fd2114d0aa08a7080807034d505547ba3287effce93f62866301d5405771e1e908664e8dedc6b46d99a44df3a08e990dec0e401dc7d84e

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

          Filesize

          482B

          MD5

          16e33633b35c7dfb07fd7a98e7a6b47d

          SHA1

          ff2116a28994b89aed8580b0a904bb90833cec11

          SHA256

          c60ee1b36692b1e1f2aecdd70a84b4bfdad77ce60260789121a67a43de9d2d42

          SHA512

          c1333a9f1336fe15e90416270ff3ab9f12f925cac0ecfada6f2d6c136076713b7a3b635c795866d74e550ffc7fa43b2b7c9b8915f1e4a7b98cb83eec2fe3bbf1

        • C:\Users\Admin\AppData\Local\4251ab14-0782-4d39-b304-f9f99e2a2e5f\783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813.exe

          Filesize

          790KB

          MD5

          d22496b92fa86f2233003edfe5b83fd1

          SHA1

          c3b395a05b9f9dd69acf6662a410e3a0865c1df5

          SHA256

          783b9eba13de54091ddedbfc987ccd321bd34a41457de412e635121ebb78f813

          SHA512

          20571f3bfcf1ca7f445890c4834c4c2339c3ee56530fc9926c53cd9c7aec8237a7a43a5ad44ce6ec12663ea167f1e6c02ca29304b2dfc71ebe797b654e17333f

        • C:\Users\Admin\AppData\Local\fb2f4f0c-7ce2-4c89-94a7-cba034363b39\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\fb2f4f0c-7ce2-4c89-94a7-cba034363b39\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • memory/1004-184-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-170-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-252-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1004-219-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1004-187-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-186-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-185-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-183-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-182-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-181-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-180-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-179-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-178-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-177-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-176-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-175-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-169-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-174-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-172-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-151-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1004-153-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-154-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-155-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-156-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-157-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-158-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1004-159-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-160-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-161-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-162-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-163-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-164-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-165-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-166-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-167-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-168-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-173-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/1004-171-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-141-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-149-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-146-0x00000000021E0000-0x000000000227F000-memory.dmp

          Filesize

          636KB

        • memory/4944-145-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-144-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-143-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-132-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-140-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-139-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-138-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-120-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-137-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-136-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-135-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-134-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-148-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-147-0x0000000002380000-0x000000000249B000-memory.dmp

          Filesize

          1.1MB

        • memory/4944-133-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-131-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-121-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-130-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-129-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-128-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-127-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-122-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-150-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-126-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-125-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-124-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4944-123-0x0000000077D50000-0x0000000077EDE000-memory.dmp

          Filesize

          1.6MB

        • memory/4992-425-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4992-353-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB