Analysis

  • max time kernel
    297s
  • max time network
    273s
  • 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, 22:21

General

  • Target

    15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f.exe

  • Size

    718KB

  • MD5

    2c5d1db545700c74bb9eee8d95b7d7d9

  • SHA1

    6724674c8185c53e7b7472fdef9588c165255ca0

  • SHA256

    15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f

  • SHA512

    06693fc38fe5ea9c9c5acea547b2e6d6cc49634f7885087e98a83b0cbb811f0fabca03c77b929d6029d8fb59c186d3c2bc6d469f55d7b463e1f3c11006ee7342

  • SSDEEP

    12288:MVGPDTqIyNOvQvNzUcnftApmqO+jh0sxlqM4USPiJ95lDKuu1aCPHsn6LUY4na:QGINOovbt41jy59Pq5YzaCPwuUZna

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .uajs

  • 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: 0859PsawqS

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 18 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 13 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 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\15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f.exe
    "C:\Users\Admin\AppData\Local\Temp\15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4880
    • C:\Users\Admin\AppData\Local\Temp\15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f.exe
      "C:\Users\Admin\AppData\Local\Temp\15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3900
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6941d9e5-b010-44fb-bcdf-41a6a0b023ac" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4308
      • C:\Users\Admin\AppData\Local\Temp\15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f.exe
        "C:\Users\Admin\AppData\Local\Temp\15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4356
        • C:\Users\Admin\AppData\Local\Temp\15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f.exe
          "C:\Users\Admin\AppData\Local\Temp\15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2308
          • C:\Users\Admin\AppData\Local\720229e0-eb30-4b9f-a3f3-74a7efb401f8\build2.exe
            "C:\Users\Admin\AppData\Local\720229e0-eb30-4b9f-a3f3-74a7efb401f8\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3860
            • C:\Users\Admin\AppData\Local\720229e0-eb30-4b9f-a3f3-74a7efb401f8\build2.exe
              "C:\Users\Admin\AppData\Local\720229e0-eb30-4b9f-a3f3-74a7efb401f8\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:2892
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2892 -s 772
                7⤵
                • Program crash
                PID:3384
          • C:\Users\Admin\AppData\Local\720229e0-eb30-4b9f-a3f3-74a7efb401f8\build3.exe
            "C:\Users\Admin\AppData\Local\720229e0-eb30-4b9f-a3f3-74a7efb401f8\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4856
            • C:\Users\Admin\AppData\Local\720229e0-eb30-4b9f-a3f3-74a7efb401f8\build3.exe
              "C:\Users\Admin\AppData\Local\720229e0-eb30-4b9f-a3f3-74a7efb401f8\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:516
              • 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:2776
  • 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:1584
    • 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:1564
      • 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:836
  • 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:4324
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4644
  • 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:2444
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:3572
  • 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:2852
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:3812
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    PID:4964

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

          c5d139e8bdcb6f2d55b6357da31446d0

          SHA1

          c7f643f61b1c2dad834799119879d791c29211b9

          SHA256

          48a26006c3b5a55e469693287a3035cac0d548dec198365e92c017d431f230cf

          SHA512

          032c8e983f6b5b5bd6a0ea6f56cb9c6235fc32e3a66f39358e642bad1fa45d024f9591fd5289d31599a263ecded7628e470f14fd0976ee66a56ca666c4209fe2

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

          Filesize

          392B

          MD5

          e116f9be56e4ddf475ce5e9c6af83f17

          SHA1

          e7bbbb53722a74a3446bbc84f5859a51bf81d766

          SHA256

          955c80be8fa012a16525fb770294fa228207d9fea2d9e24fc0a4f5562dec2d78

          SHA512

          49c77563ff9dabb89616447f4ed0f2cd80a72136397a0d51ce229f0da57b0e15394f619bbc79d6399a39ce1331c1cb15b64a3d17f876e79ff4231bef91d6c9fe

        • C:\Users\Admin\AppData\Local\6941d9e5-b010-44fb-bcdf-41a6a0b023ac\15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f.exe

          Filesize

          718KB

          MD5

          2c5d1db545700c74bb9eee8d95b7d7d9

          SHA1

          6724674c8185c53e7b7472fdef9588c165255ca0

          SHA256

          15f335fdcf6c1192f71c548697f5332d484a09c0b76f825acd6b5b894965ab0f

          SHA512

          06693fc38fe5ea9c9c5acea547b2e6d6cc49634f7885087e98a83b0cbb811f0fabca03c77b929d6029d8fb59c186d3c2bc6d469f55d7b463e1f3c11006ee7342

        • C:\Users\Admin\AppData\Local\720229e0-eb30-4b9f-a3f3-74a7efb401f8\build2.exe

          Filesize

          318KB

          MD5

          4fbdcb0ee049b71cb8b9a68bf69f9e0e

          SHA1

          7e36a91700e0a7a8b3a3319cc4b93a1656447096

          SHA256

          31084adb877ef9bcf2143fa2d60ce8860d15af325424b709ad115febe8b96e81

          SHA512

          19aeff14cc2d1c60e99228b089f8c76ed5d7c7ed95ef3adb639b899c258c4cb17982d6de4294506c53dedbbf771f9f26e99094d22d1d05542d3cf86a6b24d283

        • C:\Users\Admin\AppData\Local\720229e0-eb30-4b9f-a3f3-74a7efb401f8\build3.exe

          Filesize

          299KB

          MD5

          41b883a061c95e9b9cb17d4ca50de770

          SHA1

          1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

          SHA256

          fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

          SHA512

          cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

        • memory/516-74-0x0000000000410000-0x00000000004D5000-memory.dmp

          Filesize

          788KB

        • memory/516-73-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/516-71-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/516-66-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/1584-93-0x0000000000810000-0x0000000000910000-memory.dmp

          Filesize

          1024KB

        • memory/2308-35-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2308-52-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2308-21-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2308-20-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2308-28-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2308-27-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2308-32-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2308-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2308-58-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2308-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2444-155-0x0000000000A80000-0x0000000000B80000-memory.dmp

          Filesize

          1024KB

        • memory/2444-147-0x0000000000A80000-0x0000000000B80000-memory.dmp

          Filesize

          1024KB

        • memory/2852-173-0x00000000008A0000-0x00000000009A0000-memory.dmp

          Filesize

          1024KB

        • memory/2892-44-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2892-49-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2892-50-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2892-62-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/3860-45-0x0000000000B30000-0x0000000000C30000-memory.dmp

          Filesize

          1024KB

        • memory/3860-46-0x0000000000AF0000-0x0000000000B25000-memory.dmp

          Filesize

          212KB

        • memory/3900-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3900-15-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4324-117-0x000000000081E000-0x000000000082E000-memory.dmp

          Filesize

          64KB

        • memory/4356-18-0x0000000002D50000-0x0000000002DEC000-memory.dmp

          Filesize

          624KB

        • memory/4856-68-0x00000000008E0000-0x00000000008E4000-memory.dmp

          Filesize

          16KB

        • memory/4856-67-0x0000000000A50000-0x0000000000B50000-memory.dmp

          Filesize

          1024KB

        • memory/4880-2-0x00000000048D0000-0x00000000049EB000-memory.dmp

          Filesize

          1.1MB

        • memory/4880-1-0x0000000004830000-0x00000000048CF000-memory.dmp

          Filesize

          636KB