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Analysis

  • max time kernel
    142s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/03/2024, 20:57

General

  • Target

    429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57.exe

  • Size

    758KB

  • MD5

    601c8193122d6d0b2327d4641128fb0f

  • SHA1

    1807a55ad3ec3d575e055e7f65c7461165074a6a

  • SHA256

    429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57

  • SHA512

    d021ee206e441e152ec04329b7967ee1f6d431288060cc28a3c50b0f35bc3220dac37955188e1a7e4ba0b57a55089e6381ff490718dba528bd87eea07276e820

  • SSDEEP

    12288:LdMLdy76psXw5EZjUCaGvuxtIC6IJOsBPH0EPg8kNHVwsxZpnz+UMrrIGT6:LqU6FGBaiGAslUEI8G1wsxZpmr8Gu

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 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 7 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 5 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\429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57.exe
    "C:\Users\Admin\AppData\Local\Temp\429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4884
    • C:\Users\Admin\AppData\Local\Temp\429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57.exe
      "C:\Users\Admin\AppData\Local\Temp\429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:468
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\b9aaa570-3d5c-4dca-ad5c-d2525d809c43" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1320
      • C:\Users\Admin\AppData\Local\Temp\429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57.exe
        "C:\Users\Admin\AppData\Local\Temp\429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1568
        • C:\Users\Admin\AppData\Local\Temp\429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57.exe
          "C:\Users\Admin\AppData\Local\Temp\429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2236
          • C:\Users\Admin\AppData\Local\29b1bdd7-ccd8-4634-82e6-560bb2f675e5\build2.exe
            "C:\Users\Admin\AppData\Local\29b1bdd7-ccd8-4634-82e6-560bb2f675e5\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3852
            • C:\Users\Admin\AppData\Local\29b1bdd7-ccd8-4634-82e6-560bb2f675e5\build2.exe
              "C:\Users\Admin\AppData\Local\29b1bdd7-ccd8-4634-82e6-560bb2f675e5\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:2312
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 1956
                7⤵
                • Program crash
                PID:4952
          • C:\Users\Admin\AppData\Local\29b1bdd7-ccd8-4634-82e6-560bb2f675e5\build3.exe
            "C:\Users\Admin\AppData\Local\29b1bdd7-ccd8-4634-82e6-560bb2f675e5\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1740
            • C:\Users\Admin\AppData\Local\29b1bdd7-ccd8-4634-82e6-560bb2f675e5\build3.exe
              "C:\Users\Admin\AppData\Local\29b1bdd7-ccd8-4634-82e6-560bb2f675e5\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:2556
              • 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:1408
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2312 -ip 2312
    1⤵
      PID:316
    • 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:3204
      • 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:3624
        • 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:316
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      1⤵
      • Executes dropped EXE
      PID:3176

    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

      913d4ffe7b4dcc57225d84d352e06abc

      SHA1

      9531a176c280a1b9d544dc7ebf7b1e4107fedc63

      SHA256

      75fd1a3412a91ff68ebb9d40936c1db5e6fa812e90e1ce89891ee9817e346126

      SHA512

      3ad3fb9414eb63610cc61f0b352c0c075ad1067e44fbbe512eb8385160663ff818e2091abc0486f674f75d7052a1f446bf6cf908ecf77f5183f548723139d320

    • 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

      5b6c124c4c3c83fd183a8e433a1a8a81

      SHA1

      493d6a97dd1aca10dfb9e13a3dcc591f0ca058f6

      SHA256

      d630acd3e7a7cf9143f610429398dbaac6e7c362dc82bb719ecce13f3cbf9fd1

      SHA512

      43646574ff42658286d45bf51319bff0f394365c45beab2c7c5a467d10d0ee2d0a2b7e6238efc30460e2c44d3cbdb64c90ac3b61fbc158300bc69d3ad709e5dd

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

      Filesize

      392B

      MD5

      877226c3b8fcbbd4991b5260a579b7d3

      SHA1

      fb95c9e583c170c377ae7b12ae003169fc3eef55

      SHA256

      4cc559590ad310919426aa4df31e0c8d26fb32dfaa7a77ebe1f414d94ad882cc

      SHA512

      89bce9d2826d968f7c69e98e4eb3701aa5e2298c419ae510071abc9cf13cc37509757e1d07132c187d509b8151611dc3eb3da9a392596a74c37e50d5c0fc3911

    • C:\Users\Admin\AppData\Local\29b1bdd7-ccd8-4634-82e6-560bb2f675e5\build2.exe

      Filesize

      277KB

      MD5

      8dae8b6a6be6e3527183594d1c26a2d3

      SHA1

      b87e40cee60869a36e79c88c8a3a34baf0bc4889

      SHA256

      afce72cd3bc717c784962083066e3ede2b0aaadbe0908ec7360096c923774fa5

      SHA512

      0bf065700db647efba39a13a58242a595907e6c11885575cf0bdad9e23ab40583c8a6535464e46d75d075e20d88b7a6305a761df9da787fdc8728483dd48f96e

    • C:\Users\Admin\AppData\Local\29b1bdd7-ccd8-4634-82e6-560bb2f675e5\build3.exe

      Filesize

      299KB

      MD5

      41b883a061c95e9b9cb17d4ca50de770

      SHA1

      1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

      SHA256

      fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

      SHA512

      cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

    • C:\Users\Admin\AppData\Local\b9aaa570-3d5c-4dca-ad5c-d2525d809c43\429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57.exe

      Filesize

      758KB

      MD5

      601c8193122d6d0b2327d4641128fb0f

      SHA1

      1807a55ad3ec3d575e055e7f65c7461165074a6a

      SHA256

      429b58dfe9191bce5a00ced0ba190e2518cd8f48d7358119d61335e504169a57

      SHA512

      d021ee206e441e152ec04329b7967ee1f6d431288060cc28a3c50b0f35bc3220dac37955188e1a7e4ba0b57a55089e6381ff490718dba528bd87eea07276e820

    • memory/468-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/468-15-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/468-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/468-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/468-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1568-18-0x0000000000D00000-0x0000000000D9E000-memory.dmp

      Filesize

      632KB

    • memory/1740-80-0x0000000000950000-0x0000000000954000-memory.dmp

      Filesize

      16KB

    • memory/1740-79-0x0000000000B2E000-0x0000000000B3E000-memory.dmp

      Filesize

      64KB

    • memory/2236-32-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2236-27-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2236-28-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2236-20-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2236-34-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2236-35-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2236-22-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2236-72-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2236-69-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2236-21-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2312-53-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2312-52-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2312-55-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2312-47-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2556-76-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/2556-81-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/2556-83-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/2556-84-0x0000000000410000-0x00000000004D9000-memory.dmp

      Filesize

      804KB

    • memory/3204-99-0x00000000008A0000-0x00000000009A0000-memory.dmp

      Filesize

      1024KB

    • memory/3852-49-0x00000000005F0000-0x0000000000621000-memory.dmp

      Filesize

      196KB

    • memory/3852-48-0x0000000000640000-0x0000000000740000-memory.dmp

      Filesize

      1024KB

    • memory/4884-1-0x0000000002920000-0x00000000029B8000-memory.dmp

      Filesize

      608KB

    • memory/4884-2-0x00000000029C0000-0x0000000002ADB000-memory.dmp

      Filesize

      1.1MB