Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    26-03-2024 00:51

General

  • Target

    a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015.exe

  • Size

    772KB

  • MD5

    53128d1e66f083bf12dfd55339677a80

  • SHA1

    9f1151ab21c52c3c973cc4adc50d2c7d0af3f1d9

  • SHA256

    a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015

  • SHA512

    fee9239f0190e4afd9f4a210488ba78b44ad11f93932a0e8d5083bb988e29f68ef5da86d64798579e0f2a42dc545611c8012451219a64226fd03ed7b5de6ab21

  • SSDEEP

    24576:Y69EKqTauMaW8sPEL1EATsTsM8Y+iz9tg:Y6mKqT4aW8YEL+ATsQIPz

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

8.4

Botnet

95002d0a9d65ffced363a8f35f42a529

C2

https://steamcommunity.com/profiles/76561199654112719

https://t.me/r2d0s

Attributes
  • profile_id_v2

    95002d0a9d65ffced363a8f35f42a529

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:123.0) Gecko/20100101 Firefox/123.0

Signatures

  • Detect Vidar Stealer 5 IoCs
  • Detected Djvu ransomware 19 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 10 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 7 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\a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015.exe
    "C:\Users\Admin\AppData\Local\Temp\a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4960
    • C:\Users\Admin\AppData\Local\Temp\a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015.exe
      "C:\Users\Admin\AppData\Local\Temp\a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4740
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\39acb364-6322-4e47-8e74-0aeff0896a0c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2960
      • C:\Users\Admin\AppData\Local\Temp\a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015.exe
        "C:\Users\Admin\AppData\Local\Temp\a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2060
        • C:\Users\Admin\AppData\Local\Temp\a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015.exe
          "C:\Users\Admin\AppData\Local\Temp\a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3064
          • C:\Users\Admin\AppData\Local\46e66d5a-9767-46f0-93ad-08d0297e7d1b\build2.exe
            "C:\Users\Admin\AppData\Local\46e66d5a-9767-46f0-93ad-08d0297e7d1b\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1340
            • C:\Users\Admin\AppData\Local\46e66d5a-9767-46f0-93ad-08d0297e7d1b\build2.exe
              "C:\Users\Admin\AppData\Local\46e66d5a-9767-46f0-93ad-08d0297e7d1b\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:2992
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 2340
                7⤵
                • Program crash
                PID:2432
          • C:\Users\Admin\AppData\Local\46e66d5a-9767-46f0-93ad-08d0297e7d1b\build3.exe
            "C:\Users\Admin\AppData\Local\46e66d5a-9767-46f0-93ad-08d0297e7d1b\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4972
            • C:\Users\Admin\AppData\Local\46e66d5a-9767-46f0-93ad-08d0297e7d1b\build3.exe
              "C:\Users\Admin\AppData\Local\46e66d5a-9767-46f0-93ad-08d0297e7d1b\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:2868
              • 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:3416
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2992 -ip 2992
    1⤵
      PID:1236
    • 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:2412
      • 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:3316
        • 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:3516
    • 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:1972
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
        • Executes dropped EXE
        PID:4448
    • 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:4552
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
        • Executes dropped EXE
        PID:4608

    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

      dc83f7acaed8a3525bc9a91778a357af

      SHA1

      4c3e9df82f1c3d7ae06b7c8cb83c0d76245bfd1f

      SHA256

      bcba6e9a08beee95d60acea8c5b0646042759e4d125f2956ba3834fb84434970

      SHA512

      88c74e4c54f026c2501a69a925b39ac7833f3bed0d0f9b747b8d4546a9849fd51b971a5cbb540b44fa2ec8df163756040560ef3de75e43e24515427f4c8fb6f0

    • 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

      12eea78291ecc4488e4c6607bb8cb346

      SHA1

      5956b68c390dcd6a47a7501d1a316da575b45198

      SHA256

      64b60fcd89f2d0cc222dccb31a587406d86454a8631143080bb854ad1458a492

      SHA512

      e9d305ad9c8667c2943a67210a2c2fcfcfbe1c07b1e7946385addc1ab1807e1e0af41103fa3976d8737ac93d5d750a0928dcc15bccda75655cd006282e7aed19

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

      Filesize

      392B

      MD5

      44f7f4e3edffc1ee6074b8ba7179598a

      SHA1

      da650a97467dd5e5cbd741da7be0e1de30eda968

      SHA256

      0860f3b9ed079b10bf32d127d6baf9877e733dab61b2115e9bed9885f8ba1935

      SHA512

      ed5ac4baeadd1f7b71a04435e2f22d6735a8874b5e7914e1bd28bf92edbd624d47b9ee7a9c26396f9f68797885e0f67550eb17f819f8e04772c9f96f66e7674f

    • C:\Users\Admin\AppData\Local\39acb364-6322-4e47-8e74-0aeff0896a0c\a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015.exe

      Filesize

      772KB

      MD5

      53128d1e66f083bf12dfd55339677a80

      SHA1

      9f1151ab21c52c3c973cc4adc50d2c7d0af3f1d9

      SHA256

      a946dab2cce444ca5dc832e2b2f581e649d2b45ea98cda0c5f688fdce3a63015

      SHA512

      fee9239f0190e4afd9f4a210488ba78b44ad11f93932a0e8d5083bb988e29f68ef5da86d64798579e0f2a42dc545611c8012451219a64226fd03ed7b5de6ab21

    • C:\Users\Admin\AppData\Local\46e66d5a-9767-46f0-93ad-08d0297e7d1b\build2.exe

      Filesize

      342KB

      MD5

      26544ec9adc1864de80222fb0b38e6dc

      SHA1

      2ca52374bb468a8e2c10d39b64d1e4e9d7d0adee

      SHA256

      03b38ccf2c3145839d5ea7c5ccec609de3a67a7e435e94ca05c8c080d9df4411

      SHA512

      f7eb99db8eb4df15ac252bd4523a407b32089d22c435303499bc3813ecdf1ffbc8483417bb97e901fba3e3f36c6e9e47eb30fa78b7c461d3f78f5d5899fae730

    • C:\Users\Admin\AppData\Local\46e66d5a-9767-46f0-93ad-08d0297e7d1b\build3.exe

      Filesize

      299KB

      MD5

      41b883a061c95e9b9cb17d4ca50de770

      SHA1

      1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

      SHA256

      fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

      SHA512

      cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

    • memory/1340-53-0x0000000004A70000-0x0000000004AA1000-memory.dmp

      Filesize

      196KB

    • memory/1340-52-0x0000000002E50000-0x0000000002F50000-memory.dmp

      Filesize

      1024KB

    • memory/1340-97-0x0000000004A70000-0x0000000004AA1000-memory.dmp

      Filesize

      196KB

    • memory/1972-111-0x0000000000880000-0x0000000000980000-memory.dmp

      Filesize

      1024KB

    • memory/2060-20-0x00000000021E0000-0x0000000002279000-memory.dmp

      Filesize

      612KB

    • memory/2412-95-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

      Filesize

      1024KB

    • memory/2868-82-0x0000000000410000-0x0000000000413000-memory.dmp

      Filesize

      12KB

    • memory/2868-76-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/2868-79-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/2868-81-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/2992-55-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2992-84-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2992-54-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2992-49-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/3064-37-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3064-22-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3064-36-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3064-34-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3064-30-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3064-29-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3064-24-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3064-68-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3064-87-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3064-23-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4552-132-0x0000000000B00000-0x0000000000C00000-memory.dmp

      Filesize

      1024KB

    • memory/4740-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4740-17-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4740-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4740-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4740-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4960-1-0x0000000002410000-0x00000000024AE000-memory.dmp

      Filesize

      632KB

    • memory/4960-2-0x00000000025A0000-0x00000000026BB000-memory.dmp

      Filesize

      1.1MB

    • memory/4972-75-0x00000000023F0000-0x00000000023F4000-memory.dmp

      Filesize

      16KB

    • memory/4972-74-0x00000000008A0000-0x00000000009A0000-memory.dmp

      Filesize

      1024KB