Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/03/2024, 07:30

General

  • Target

    817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb.exe

  • Size

    732KB

  • MD5

    ec1b4124cea7ec9f0173b8742e525b94

  • SHA1

    b8a59973e6b06339fb92373ea9f434a5418d2663

  • SHA256

    817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb

  • SHA512

    f376bdb59f2b88c135e9013a435872248ea9a0a86859c1b65c9092870edb17075dec05910cda0725f0f12193565263f100a5095d30ec8c3993ce99985dbbdc13

  • SSDEEP

    12288:aTmCAE1hLsu8q+IxfHTfP8ShBNin5T5SudqueYU4eh4f1gE1vaPs:aTg8hLRjxndh3ulSI9Le8paPs

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

Extracted

Family

vidar

Version

8.6

Botnet

5739ef2bbcd39fcd59c5746bfe4238c5

C2

https://steamcommunity.com/profiles/76561199658817715

https://t.me/sa9ok

Attributes
  • profile_id_v2

    5739ef2bbcd39fcd59c5746bfe4238c5

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Signatures

  • Detect Vidar Stealer 5 IoCs
  • Detected Djvu ransomware 16 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 5 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 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb.exe
    "C:\Users\Admin\AppData\Local\Temp\817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2080
    • C:\Users\Admin\AppData\Local\Temp\817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb.exe
      "C:\Users\Admin\AppData\Local\Temp\817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1540
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\96efd875-7879-49b0-b194-f3e002077395" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:952
      • C:\Users\Admin\AppData\Local\Temp\817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb.exe
        "C:\Users\Admin\AppData\Local\Temp\817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1748
        • C:\Users\Admin\AppData\Local\Temp\817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb.exe
          "C:\Users\Admin\AppData\Local\Temp\817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:440
          • C:\Users\Admin\AppData\Local\50fae896-0745-472a-98d3-0201bee9b730\build2.exe
            "C:\Users\Admin\AppData\Local\50fae896-0745-472a-98d3-0201bee9b730\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2244
            • C:\Users\Admin\AppData\Local\50fae896-0745-472a-98d3-0201bee9b730\build2.exe
              "C:\Users\Admin\AppData\Local\50fae896-0745-472a-98d3-0201bee9b730\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:5076
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 2172
                7⤵
                • Program crash
                PID:1688
          • C:\Users\Admin\AppData\Local\50fae896-0745-472a-98d3-0201bee9b730\build3.exe
            "C:\Users\Admin\AppData\Local\50fae896-0745-472a-98d3-0201bee9b730\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:316
            • C:\Users\Admin\AppData\Local\50fae896-0745-472a-98d3-0201bee9b730\build3.exe
              "C:\Users\Admin\AppData\Local\50fae896-0745-472a-98d3-0201bee9b730\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:3228
              • 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"
                7⤵
                • Creates scheduled task(s)
                PID:1544
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 5076 -ip 5076
    1⤵
      PID:4836
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      1⤵
      • Executes dropped EXE
      PID:3504

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

      Filesize

      1KB

      MD5

      e03f10ddbb0600e6b05e45889577c078

      SHA1

      d6a0476b5157fd39b8d7e87cada0913fe89d9227

      SHA256

      5a7ccfd3b4012748c70631674957a82fd7507b719f1c13498336dbd20de841e2

      SHA512

      f2f5d4ec612ec23ab5fdec665896bc288d538b77a708766bdf29eb0827a6de030889ac97e75d2a9f8143e75fb5d512589944d91acb628b3e45750c89a55db312

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

      Filesize

      724B

      MD5

      8202a1cd02e7d69597995cabbe881a12

      SHA1

      8858d9d934b7aa9330ee73de6c476acf19929ff6

      SHA256

      58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

      SHA512

      97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

      Filesize

      410B

      MD5

      0f5882b534c0a558525162f55a6099c6

      SHA1

      8ed8683013c44ad3d60f496f85ce10aafd57e86c

      SHA256

      fad8618cf204b70a5e9e1d3a5dfc915625da709f6a29985b9c0bdc5fae2c3935

      SHA512

      df4e3ffb4669d4edfbf0b8adcf16027f841a08ac9acec5638445d0c71d54c22ffce524b45aa72dd267eff92b91a3e81733ddd65b7877bbe3e9e091c6099daa46

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

      Filesize

      392B

      MD5

      3b377b5948e12542d90c2171aa70bcf4

      SHA1

      b6a6ce808df1434d6681f60bfa21a86160e8ca8f

      SHA256

      30f0682b22e5746f28523df75f8b0859ef880ed5307ea5579d9fa49845b324c4

      SHA512

      b56a55bff4ff3e4e60aa0f790f24b6bad8607cf8bf351793bb4f73ed17839f04e2c0a626f174f6fb4de04347be209775af7e282740a14d1010d5c2baeb19ca95

    • C:\Users\Admin\AppData\Local\50fae896-0745-472a-98d3-0201bee9b730\build2.exe

      Filesize

      277KB

      MD5

      8dae8b6a6be6e3527183594d1c26a2d3

      SHA1

      b87e40cee60869a36e79c88c8a3a34baf0bc4889

      SHA256

      afce72cd3bc717c784962083066e3ede2b0aaadbe0908ec7360096c923774fa5

      SHA512

      0bf065700db647efba39a13a58242a595907e6c11885575cf0bdad9e23ab40583c8a6535464e46d75d075e20d88b7a6305a761df9da787fdc8728483dd48f96e

    • C:\Users\Admin\AppData\Local\50fae896-0745-472a-98d3-0201bee9b730\build3.exe

      Filesize

      299KB

      MD5

      41b883a061c95e9b9cb17d4ca50de770

      SHA1

      1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

      SHA256

      fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

      SHA512

      cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

    • C:\Users\Admin\AppData\Local\96efd875-7879-49b0-b194-f3e002077395\817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb.exe

      Filesize

      732KB

      MD5

      ec1b4124cea7ec9f0173b8742e525b94

      SHA1

      b8a59973e6b06339fb92373ea9f434a5418d2663

      SHA256

      817d98223a4947b1f6c7c842bfe080ee76228ca968bc5e25cc52a03004af28fb

      SHA512

      f376bdb59f2b88c135e9013a435872248ea9a0a86859c1b65c9092870edb17075dec05910cda0725f0f12193565263f100a5095d30ec8c3993ce99985dbbdc13

    • memory/316-83-0x0000000000830000-0x0000000000930000-memory.dmp

      Filesize

      1024KB

    • memory/316-85-0x0000000000970000-0x0000000000974000-memory.dmp

      Filesize

      16KB

    • memory/440-20-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/440-69-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/440-22-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/440-74-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/440-21-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/440-35-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/440-34-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/440-27-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/440-28-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/440-32-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1540-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1540-15-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1540-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1540-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1540-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1748-18-0x00000000022B0000-0x0000000002346000-memory.dmp

      Filesize

      600KB

    • memory/2080-2-0x00000000023A0000-0x00000000024BB000-memory.dmp

      Filesize

      1.1MB

    • memory/2080-1-0x0000000002300000-0x0000000002398000-memory.dmp

      Filesize

      608KB

    • memory/2244-49-0x0000000002170000-0x00000000021A1000-memory.dmp

      Filesize

      196KB

    • memory/2244-48-0x0000000000580000-0x0000000000680000-memory.dmp

      Filesize

      1024KB

    • memory/3228-82-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/3228-87-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/3228-89-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/3228-90-0x0000000000410000-0x00000000004D9000-memory.dmp

      Filesize

      804KB

    • memory/5076-71-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/5076-53-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/5076-52-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/5076-47-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB