Analysis

  • max time kernel
    299s
  • max time network
    193s
  • 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, 22:30

General

  • Target

    5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe

  • Size

    798KB

  • MD5

    96b8da4c66a00c836439f6a65cd9a9f6

  • SHA1

    b89676216818fc360ddad03dee21fcdc463bd725

  • SHA256

    5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7

  • SHA512

    b5bd18d2b675f433360a60f3d92e36db3186ab8e86a7ad477403bc7e253ff04cf2721d747bca7251efba0d720cbc14254adf92cd0efcd5992551d65c9ade81a1

  • SSDEEP

    12288:83FcZ1qroZvCbPslVKOdtZ5LoYf7IX3tSzm0WKrqksDHaAsF:YcsRP0wOd1Lot30WKuksDHFs

Malware Config

Extracted

Family

djvu

C2

http://sajdfue.com/test1/get.php

Attributes
  • extension

    .vook

  • 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: 0857PsawqS

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 8 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 12 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 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 8 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\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe
    "C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2716
    • C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe
      "C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1148
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\1b184a0a-7563-4e2b-a93f-6019715d3592" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:5072
      • C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe
        "C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1296
        • C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe
          "C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3900
          • C:\Users\Admin\AppData\Local\b3535a0c-1977-4651-8ab5-396120d67a6e\build2.exe
            "C:\Users\Admin\AppData\Local\b3535a0c-1977-4651-8ab5-396120d67a6e\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1732
            • C:\Users\Admin\AppData\Local\b3535a0c-1977-4651-8ab5-396120d67a6e\build2.exe
              "C:\Users\Admin\AppData\Local\b3535a0c-1977-4651-8ab5-396120d67a6e\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:2736
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2736 -s 1932
                7⤵
                • Program crash
                PID:4260
          • C:\Users\Admin\AppData\Local\b3535a0c-1977-4651-8ab5-396120d67a6e\build3.exe
            "C:\Users\Admin\AppData\Local\b3535a0c-1977-4651-8ab5-396120d67a6e\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:5108
            • C:\Users\Admin\AppData\Local\b3535a0c-1977-4651-8ab5-396120d67a6e\build3.exe
              "C:\Users\Admin\AppData\Local\b3535a0c-1977-4651-8ab5-396120d67a6e\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:4224
              • 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:3896
  • 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:772
    • 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:4560
      • 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:192
  • 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:840
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:1928
  • 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:1200
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4992
  • 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:2324
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:1900

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

          a37f9ad60d6c3ea69259125fff505d74

          SHA1

          60f2c39d92f93f3d9fe6e6f7118988063c5f62e2

          SHA256

          003f5702bb6eab619c60c191cb0edb495caf8a31a6fbbe0337584db3605088da

          SHA512

          98e4b6e216c590d25ca96d210c065768d8c6184a84854cce0650d04cde5f2def49e25734eb36e60306172426c7786d04e0cd5e0de3ec14f31a904d1c2726fa5d

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

          Filesize

          392B

          MD5

          34f5c4dfcadde524c2518f3829251fae

          SHA1

          30bf43196ec591265ab2fb7347c54ab04e1bf17a

          SHA256

          d7deb6bac4b46de31b4a97ffbc2c90393bd9c5589584354be876c7e7aad84b48

          SHA512

          0f20d33b4ac32eb0e519f73906dbb793abdf0661a0d77ef4b56ded32e556787329a50c0785f757065859704e03b52a472b074fd7ee5be96d464c534949a2330b

        • C:\Users\Admin\AppData\Local\1b184a0a-7563-4e2b-a93f-6019715d3592\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe

          Filesize

          798KB

          MD5

          96b8da4c66a00c836439f6a65cd9a9f6

          SHA1

          b89676216818fc360ddad03dee21fcdc463bd725

          SHA256

          5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7

          SHA512

          b5bd18d2b675f433360a60f3d92e36db3186ab8e86a7ad477403bc7e253ff04cf2721d747bca7251efba0d720cbc14254adf92cd0efcd5992551d65c9ade81a1

        • C:\Users\Admin\AppData\Local\b3535a0c-1977-4651-8ab5-396120d67a6e\build2.exe

          Filesize

          277KB

          MD5

          8dae8b6a6be6e3527183594d1c26a2d3

          SHA1

          b87e40cee60869a36e79c88c8a3a34baf0bc4889

          SHA256

          afce72cd3bc717c784962083066e3ede2b0aaadbe0908ec7360096c923774fa5

          SHA512

          0bf065700db647efba39a13a58242a595907e6c11885575cf0bdad9e23ab40583c8a6535464e46d75d075e20d88b7a6305a761df9da787fdc8728483dd48f96e

        • C:\Users\Admin\AppData\Local\b3535a0c-1977-4651-8ab5-396120d67a6e\build3.exe

          Filesize

          299KB

          MD5

          41b883a061c95e9b9cb17d4ca50de770

          SHA1

          1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

          SHA256

          fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

          SHA512

          cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

        • memory/772-102-0x0000000000AE0000-0x0000000000BE0000-memory.dmp

          Filesize

          1024KB

        • memory/840-125-0x0000000000900000-0x0000000000A00000-memory.dmp

          Filesize

          1024KB

        • memory/1148-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1148-17-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1148-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1148-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1148-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1200-151-0x00000000009A0000-0x0000000000AA0000-memory.dmp

          Filesize

          1024KB

        • memory/1296-20-0x0000000000CD0000-0x0000000000D63000-memory.dmp

          Filesize

          588KB

        • memory/1732-42-0x0000000000600000-0x0000000000631000-memory.dmp

          Filesize

          196KB

        • memory/1732-39-0x0000000000690000-0x0000000000790000-memory.dmp

          Filesize

          1024KB

        • memory/2324-178-0x0000000000AA0000-0x0000000000BA0000-memory.dmp

          Filesize

          1024KB

        • memory/2716-2-0x0000000002840000-0x000000000295B000-memory.dmp

          Filesize

          1.1MB

        • memory/2716-1-0x0000000002780000-0x000000000281A000-memory.dmp

          Filesize

          616KB

        • memory/2736-60-0x0000000000400000-0x0000000000644000-memory.dmp

          Filesize

          2.3MB

        • memory/2736-58-0x0000000000400000-0x0000000000644000-memory.dmp

          Filesize

          2.3MB

        • memory/2736-45-0x0000000000400000-0x0000000000644000-memory.dmp

          Filesize

          2.3MB

        • memory/2736-40-0x0000000000400000-0x0000000000644000-memory.dmp

          Filesize

          2.3MB

        • memory/2736-44-0x0000000000400000-0x0000000000644000-memory.dmp

          Filesize

          2.3MB

        • memory/3900-51-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-54-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-52-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-30-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-24-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-68-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-49-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-23-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4224-81-0x0000000000410000-0x00000000004D5000-memory.dmp

          Filesize

          788KB

        • memory/4224-80-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4224-78-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4224-73-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/5108-75-0x0000000000860000-0x0000000000864000-memory.dmp

          Filesize

          16KB

        • memory/5108-74-0x00000000008A0000-0x00000000009A0000-memory.dmp

          Filesize

          1024KB