Analysis

  • max time kernel
    297s
  • max time network
    300s
  • platform
    windows10-1703_x64
  • resource
    win10-20240221-en
  • resource tags

    arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system
  • submitted
    28-03-2024 22:35

General

  • Target

    7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12.exe

  • Size

    789KB

  • MD5

    3f62759e105ba10ed5e7a3258cfdd027

  • SHA1

    fab99f52dae49396abec5052056787f5cd80aab0

  • SHA256

    7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12

  • SHA512

    c9f1aefc77058f69b87db8912996f892861b910ee12200a7f1fc71f25fe4a34fa80859afff2e0cd754fb6a79091d1f1b324832c43c4e9b100abec8ec7f5c9db4

  • SSDEEP

    12288:+BX8mvHN2OC4h5pxesUMbKiQ1S2Owd8jMv1cuFN9T2HYGoba400ENprV3CXIBYb9:gt17J6MiMdwQi+kPT2HY/u4kJSXI6b9

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
  • Executes dropped EXE 14 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 9 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 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 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12.exe
    "C:\Users\Admin\AppData\Local\Temp\7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4788
    • C:\Users\Admin\AppData\Local\Temp\7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12.exe
      "C:\Users\Admin\AppData\Local\Temp\7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:220
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\7639f6c7-2c8a-4e01-913e-ed25d8ef1bcb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4584
      • C:\Users\Admin\AppData\Local\Temp\7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12.exe
        "C:\Users\Admin\AppData\Local\Temp\7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1284
        • C:\Users\Admin\AppData\Local\Temp\7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12.exe
          "C:\Users\Admin\AppData\Local\Temp\7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1516
          • C:\Users\Admin\AppData\Local\8b2c3fde-2278-4f4d-8aec-b31ae1e6728e\build2.exe
            "C:\Users\Admin\AppData\Local\8b2c3fde-2278-4f4d-8aec-b31ae1e6728e\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4604
            • C:\Users\Admin\AppData\Local\8b2c3fde-2278-4f4d-8aec-b31ae1e6728e\build2.exe
              "C:\Users\Admin\AppData\Local\8b2c3fde-2278-4f4d-8aec-b31ae1e6728e\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:5004
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 5004 -s 2032
                7⤵
                • Program crash
                PID:792
          • C:\Users\Admin\AppData\Local\8b2c3fde-2278-4f4d-8aec-b31ae1e6728e\build3.exe
            "C:\Users\Admin\AppData\Local\8b2c3fde-2278-4f4d-8aec-b31ae1e6728e\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4472
            • C:\Users\Admin\AppData\Local\8b2c3fde-2278-4f4d-8aec-b31ae1e6728e\build3.exe
              "C:\Users\Admin\AppData\Local\8b2c3fde-2278-4f4d-8aec-b31ae1e6728e\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:4920
              • 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:4048
  • 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 SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4120
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1440
      • 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"
        3⤵
        • Creates scheduled task(s)
        PID:2772
  • 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 SetThreadContext
    PID:2828
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4788
  • 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 SetThreadContext
    PID:64
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4956
  • 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 SetThreadContext
    PID:2524
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4588
  • 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 SetThreadContext
    PID:816
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:1460

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    1KB

    MD5

    2a789d6b366b95c47c2e68c27f863f81

    SHA1

    1b123bd94179f5b8746bc960691ddb9546855e05

    SHA256

    ba4990d90cdd27ce932e39c10e178659436aeb5a290faa47f4825da9eca6bc94

    SHA512

    027180aabc65ae3ca35f83161b11d289d87af854656483ac2cf703d94f695c4d5bce0fce1901278ab4cbfc985c9b9aa1f455c889913834c4b1734a365c7f8e3b

  • 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

    06dc73e931872c4d94ee8918d14b77f7

    SHA1

    ef750beaf29f0ca6beb42e0ebcf05ef46c8ba928

    SHA256

    8f433b81c7b0016cdee366982d683f01c409fb93fc593dfea15af59ffca26a4a

    SHA512

    634a7ad2b21d7f8904c1d64a00ebbfc129fee5272cc627b1cbe5771ad4fea9aa12f29a17e9fb7b1c01e5ce82b9737af1993fd11f24f46394d1069104ac9fa167

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

    Filesize

    392B

    MD5

    b814d3e49c0bd702d5510f0c56a10ede

    SHA1

    44c7cd1d05bc4fb5b5255a898406ddc3bb4f47a5

    SHA256

    7827c9d94dc6587f109dc8d949badc77d5dcc2dfa6462eae727015f5e8bf34c2

    SHA512

    51e5b544990398e2b1babcc559ac4d1b93fd2d6cb23c64e3a9c15741213f556069c7a74efdc6799b912617fd386d7494d0f68670ef62d783000ab06c4cba0a69

  • C:\Users\Admin\AppData\Local\7639f6c7-2c8a-4e01-913e-ed25d8ef1bcb\7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12.exe

    Filesize

    789KB

    MD5

    3f62759e105ba10ed5e7a3258cfdd027

    SHA1

    fab99f52dae49396abec5052056787f5cd80aab0

    SHA256

    7ff43b5c8488aef426edec15650dc3717534918dd1527544d8bbaced4cdf5c12

    SHA512

    c9f1aefc77058f69b87db8912996f892861b910ee12200a7f1fc71f25fe4a34fa80859afff2e0cd754fb6a79091d1f1b324832c43c4e9b100abec8ec7f5c9db4

  • C:\Users\Admin\AppData\Local\8b2c3fde-2278-4f4d-8aec-b31ae1e6728e\build2.exe

    Filesize

    277KB

    MD5

    8dae8b6a6be6e3527183594d1c26a2d3

    SHA1

    b87e40cee60869a36e79c88c8a3a34baf0bc4889

    SHA256

    afce72cd3bc717c784962083066e3ede2b0aaadbe0908ec7360096c923774fa5

    SHA512

    0bf065700db647efba39a13a58242a595907e6c11885575cf0bdad9e23ab40583c8a6535464e46d75d075e20d88b7a6305a761df9da787fdc8728483dd48f96e

  • C:\Users\Admin\AppData\Local\8b2c3fde-2278-4f4d-8aec-b31ae1e6728e\build3.exe

    Filesize

    299KB

    MD5

    41b883a061c95e9b9cb17d4ca50de770

    SHA1

    1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

    SHA256

    fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

    SHA512

    cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

  • memory/64-148-0x0000000000880000-0x0000000000980000-memory.dmp

    Filesize

    1024KB

  • memory/220-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/220-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/220-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/220-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/220-1-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/816-202-0x0000000000A7E000-0x0000000000A8E000-memory.dmp

    Filesize

    64KB

  • memory/1284-20-0x0000000000C60000-0x0000000000CF4000-memory.dmp

    Filesize

    592KB

  • memory/1516-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1516-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1516-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1516-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1516-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1516-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1516-64-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1516-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1516-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1516-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2524-179-0x0000000000950000-0x0000000000A50000-memory.dmp

    Filesize

    1024KB

  • memory/2524-187-0x0000000000950000-0x0000000000A50000-memory.dmp

    Filesize

    1024KB

  • memory/2828-122-0x000000000098E000-0x000000000099E000-memory.dmp

    Filesize

    64KB

  • memory/4120-95-0x0000000000980000-0x0000000000A80000-memory.dmp

    Filesize

    1024KB

  • memory/4472-76-0x0000000000959000-0x000000000096A000-memory.dmp

    Filesize

    68KB

  • memory/4472-79-0x0000000000930000-0x0000000000934000-memory.dmp

    Filesize

    16KB

  • memory/4604-49-0x0000000000810000-0x0000000000910000-memory.dmp

    Filesize

    1024KB

  • memory/4604-72-0x00000000006A0000-0x00000000006D1000-memory.dmp

    Filesize

    196KB

  • memory/4604-50-0x00000000006A0000-0x00000000006D1000-memory.dmp

    Filesize

    196KB

  • memory/4788-4-0x0000000002910000-0x0000000002A2B000-memory.dmp

    Filesize

    1.1MB

  • memory/4788-2-0x00000000027A0000-0x000000000283A000-memory.dmp

    Filesize

    616KB

  • memory/4920-74-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/4920-78-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/4920-81-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/4920-82-0x0000000000410000-0x00000000004D5000-memory.dmp

    Filesize

    788KB

  • memory/5004-52-0x0000000000400000-0x0000000000644000-memory.dmp

    Filesize

    2.3MB

  • memory/5004-46-0x0000000000400000-0x0000000000644000-memory.dmp

    Filesize

    2.3MB

  • memory/5004-51-0x0000000000400000-0x0000000000644000-memory.dmp

    Filesize

    2.3MB

  • memory/5004-69-0x0000000000400000-0x0000000000644000-memory.dmp

    Filesize

    2.3MB