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Analysis

  • max time kernel
    300s
  • max time network
    303s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    04/04/2024, 22:53

General

  • Target

    bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe

  • Size

    717KB

  • MD5

    81e8606a78bd38767ec0d3961ef587b2

  • SHA1

    218674abf3acf44640354fb2cb3b95e6d6362729

  • SHA256

    bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb

  • SHA512

    dd8834446c907c2f03ade9d3688f6b90ff6030a4647f5aa95a60f805811c0b5a1c69a8813901b9e151874e7e9f1825cd276c6aef6bdc63506bdea0b7f5707275

  • SSDEEP

    12288:qObBmsuLTaBWZxb5ebNpysfPASGqnTFkonMJZsSVth2TOwiMXF:qObiTaBysysAfqnTFkonM/sSVtVwvXF

Malware Config

Extracted

Family

djvu

C2

http://sajdfue.com/test2/get.php

Attributes
  • extension

    .uazq

  • offline_id

    Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1

  • 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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0860PsawqS

rsa_pubkey.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199662282318

https://t.me/t8jmhl

Attributes
  • 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 OPR/108.0.0.0

Signatures

  • Detect Vidar Stealer 7 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\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe
    "C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe
      "C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4644
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\fc1f06a1-0310-4efe-93ea-956be9fa5604" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1452
      • C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe
        "C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4392
        • C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe
          "C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4408
          • C:\Users\Admin\AppData\Local\680df27f-7b8d-4c5f-b37f-025d58e0a0ef\build2.exe
            "C:\Users\Admin\AppData\Local\680df27f-7b8d-4c5f-b37f-025d58e0a0ef\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4548
            • C:\Users\Admin\AppData\Local\680df27f-7b8d-4c5f-b37f-025d58e0a0ef\build2.exe
              "C:\Users\Admin\AppData\Local\680df27f-7b8d-4c5f-b37f-025d58e0a0ef\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:4528
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 1912
                7⤵
                • Program crash
                PID:4864
          • C:\Users\Admin\AppData\Local\680df27f-7b8d-4c5f-b37f-025d58e0a0ef\build3.exe
            "C:\Users\Admin\AppData\Local\680df27f-7b8d-4c5f-b37f-025d58e0a0ef\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1588
            • C:\Users\Admin\AppData\Local\680df27f-7b8d-4c5f-b37f-025d58e0a0ef\build3.exe
              "C:\Users\Admin\AppData\Local\680df27f-7b8d-4c5f-b37f-025d58e0a0ef\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:4496
              • 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:3864
  • 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:4376
    • 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:3200
      • 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:1348
  • 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:4184
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:5012
  • 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:3332
  • 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:2164
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:3864
  • 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:4892
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:2884

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

    3ec812af46b0f111e99b54b129eb94f9

    SHA1

    103c4720315078aadb6d63111eec900a8652fc9c

    SHA256

    64d459714f98144b7a04079efbd965519d8b0bd3ed0021832e3683e79bcd41c6

    SHA512

    1fc8bac653f8f2daaa92014daa05a31cc02abac666c485318b76b379c53f47ddb79ee3495697716a1838b85766b5d71138bc6438844c661792064c22a68b2abc

  • 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

    2c6d8b5798b25d0d4275ed8d61303553

    SHA1

    c7eb44de5e68f0b1e7e5b58b1e87ce51e3132480

    SHA256

    2bf5197849e2d8540ef5c2caa331f34d415998fdd159f969445bfde49fdcf9c4

    SHA512

    a4b86eaf15fe7f029b579a0c9a462576e3e8e03fae51be442fdb8d98497a6aa9dbeb150258eb7f9e24f6b4f70ea3d8f0aaeb81d5840ce6474effa675926bd66e

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

    Filesize

    392B

    MD5

    8f7aff31525a6b05d2e92efe3b553158

    SHA1

    07c2d89678db3781d7077b2965589663be455a93

    SHA256

    7c3b63f3565484713dcc48a3bf06d3654212cdc4a33abdae083b78efebc29430

    SHA512

    0ca6d1a2edff65204fc85252a0664198bdacc6f9f260946b66660540c6d18539c17552dbc3149b3365429b219f9a8bd5759d40ea1c8f997a94cd7ff2344916f9

  • C:\Users\Admin\AppData\Local\680df27f-7b8d-4c5f-b37f-025d58e0a0ef\build2.exe

    Filesize

    318KB

    MD5

    4fbdcb0ee049b71cb8b9a68bf69f9e0e

    SHA1

    7e36a91700e0a7a8b3a3319cc4b93a1656447096

    SHA256

    31084adb877ef9bcf2143fa2d60ce8860d15af325424b709ad115febe8b96e81

    SHA512

    19aeff14cc2d1c60e99228b089f8c76ed5d7c7ed95ef3adb639b899c258c4cb17982d6de4294506c53dedbbf771f9f26e99094d22d1d05542d3cf86a6b24d283

  • C:\Users\Admin\AppData\Local\680df27f-7b8d-4c5f-b37f-025d58e0a0ef\build3.exe

    Filesize

    299KB

    MD5

    41b883a061c95e9b9cb17d4ca50de770

    SHA1

    1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

    SHA256

    fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

    SHA512

    cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

  • C:\Users\Admin\AppData\Local\fc1f06a1-0310-4efe-93ea-956be9fa5604\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe

    Filesize

    717KB

    MD5

    81e8606a78bd38767ec0d3961ef587b2

    SHA1

    218674abf3acf44640354fb2cb3b95e6d6362729

    SHA256

    bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb

    SHA512

    dd8834446c907c2f03ade9d3688f6b90ff6030a4647f5aa95a60f805811c0b5a1c69a8813901b9e151874e7e9f1825cd276c6aef6bdc63506bdea0b7f5707275

  • memory/1056-1-0x0000000004880000-0x0000000004913000-memory.dmp

    Filesize

    588KB

  • memory/1056-2-0x0000000004920000-0x0000000004A3B000-memory.dmp

    Filesize

    1.1MB

  • memory/1588-65-0x0000000000960000-0x0000000000A60000-memory.dmp

    Filesize

    1024KB

  • memory/1588-66-0x0000000000810000-0x0000000000814000-memory.dmp

    Filesize

    16KB

  • memory/2164-158-0x0000000000A50000-0x0000000000B50000-memory.dmp

    Filesize

    1024KB

  • memory/2324-131-0x00000000009F0000-0x0000000000AF0000-memory.dmp

    Filesize

    1024KB

  • memory/4184-107-0x0000000000AA0000-0x0000000000BA0000-memory.dmp

    Filesize

    1024KB

  • memory/4376-79-0x0000000000B80000-0x0000000000C80000-memory.dmp

    Filesize

    1024KB

  • memory/4392-19-0x0000000004800000-0x00000000048A1000-memory.dmp

    Filesize

    644KB

  • memory/4408-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4408-59-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4408-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4408-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4408-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4408-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4408-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4408-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4408-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4408-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4496-68-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/4496-67-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/4496-62-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/4528-44-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4528-50-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4528-49-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4528-73-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4548-46-0x0000000002360000-0x0000000002395000-memory.dmp

    Filesize

    212KB

  • memory/4548-45-0x00000000009C0000-0x0000000000AC0000-memory.dmp

    Filesize

    1024KB

  • memory/4644-15-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4644-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4644-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4644-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4644-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4892-189-0x0000000000B50000-0x0000000000C50000-memory.dmp

    Filesize

    1024KB

  • memory/5012-109-0x0000000000410000-0x00000000004D5000-memory.dmp

    Filesize

    788KB