Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/03/2024, 01:00

General

  • Target

    7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe

  • Size

    759KB

  • MD5

    dd9f4d7ce1d178bf023e7e778032d3c4

  • SHA1

    b68fa852c44b7f472b0a17aca512a744f07e3746

  • SHA256

    7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15

  • SHA512

    a66dc2aeafcf4c2d96122c7e8575abd295a143273a284fad1bbf84a127b6f336105bd379a5137673d320725d83d3b21ec95f7da701486ee1c0f854187b3e0c1e

  • SSDEEP

    12288:SvA4oZw0pLbQwLACJLzIzw8ePOBScwM59TkMlytUoPxStCJ9wLwl1UhXkonb:SoS6/agEwK/L5iMlyt5w0MQGDnb

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

8.6

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 6 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
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 8 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 6 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\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe
    "C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2108
    • C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe
      "C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4488
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\27d8c4bf-12fd-48d8-83e3-23fe303aa37d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3024
      • C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe
        "C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1236
        • C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe
          "C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1464
          • C:\Users\Admin\AppData\Local\1fb88bd0-9a3c-4aa2-9865-6548c80ba324\build2.exe
            "C:\Users\Admin\AppData\Local\1fb88bd0-9a3c-4aa2-9865-6548c80ba324\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3192
            • C:\Users\Admin\AppData\Local\1fb88bd0-9a3c-4aa2-9865-6548c80ba324\build2.exe
              "C:\Users\Admin\AppData\Local\1fb88bd0-9a3c-4aa2-9865-6548c80ba324\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:2232
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2232 -s 1952
                7⤵
                • Program crash
                PID:5020
          • C:\Users\Admin\AppData\Local\1fb88bd0-9a3c-4aa2-9865-6548c80ba324\build3.exe
            "C:\Users\Admin\AppData\Local\1fb88bd0-9a3c-4aa2-9865-6548c80ba324\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2672
            • C:\Users\Admin\AppData\Local\1fb88bd0-9a3c-4aa2-9865-6548c80ba324\build3.exe
              "C:\Users\Admin\AppData\Local\1fb88bd0-9a3c-4aa2-9865-6548c80ba324\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:4352
              • 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:2620
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2232 -ip 2232
    1⤵
      PID:2644
    • 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:3048
      • 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:372
        • 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:4692
    • 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:4516
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
        • Executes dropped EXE
        PID:3596

    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

      111d7ab27b7e19d7ece11d68020e8540

      SHA1

      109d6fcee12a920a14c719b5d6490b7bbe53660c

      SHA256

      895a182e29f0b295d22ad5bc97bef00aef50210bcd987c3a638b23a0ce3b564b

      SHA512

      54c36cdb543ecb5ed1a1641341ed5950cc2ae533ba2f3888b3490d6042aa203afbfbe998d2875b3ba12cb359246412774024f31acd063f2918e0650bfda94d69

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

      Filesize

      392B

      MD5

      fdc597bd1e4f25a606da6f593dd48978

      SHA1

      6dccb816d572b09bcfbc045980bc00cbe3e0c338

      SHA256

      f9c45bafba121716bde81d4258a04dec278aee75fca002df50de3782f78d1b27

      SHA512

      c9aa5dd3eb41bcf0b2ead257b5353f19d9fad31981af7bb99d7ceb894a6cf8b965bfa27a5bd28f5c634084996ab0ed97b23e5c575e3d5810f377ddd0205ded92

    • C:\Users\Admin\AppData\Local\1fb88bd0-9a3c-4aa2-9865-6548c80ba324\build2.exe

      Filesize

      277KB

      MD5

      8dae8b6a6be6e3527183594d1c26a2d3

      SHA1

      b87e40cee60869a36e79c88c8a3a34baf0bc4889

      SHA256

      afce72cd3bc717c784962083066e3ede2b0aaadbe0908ec7360096c923774fa5

      SHA512

      0bf065700db647efba39a13a58242a595907e6c11885575cf0bdad9e23ab40583c8a6535464e46d75d075e20d88b7a6305a761df9da787fdc8728483dd48f96e

    • C:\Users\Admin\AppData\Local\1fb88bd0-9a3c-4aa2-9865-6548c80ba324\build3.exe

      Filesize

      299KB

      MD5

      41b883a061c95e9b9cb17d4ca50de770

      SHA1

      1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

      SHA256

      fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

      SHA512

      cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

    • C:\Users\Admin\AppData\Local\27d8c4bf-12fd-48d8-83e3-23fe303aa37d\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe

      Filesize

      759KB

      MD5

      dd9f4d7ce1d178bf023e7e778032d3c4

      SHA1

      b68fa852c44b7f472b0a17aca512a744f07e3746

      SHA256

      7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15

      SHA512

      a66dc2aeafcf4c2d96122c7e8575abd295a143273a284fad1bbf84a127b6f336105bd379a5137673d320725d83d3b21ec95f7da701486ee1c0f854187b3e0c1e

    • memory/1236-16-0x0000000000D10000-0x0000000000DAC000-memory.dmp

      Filesize

      624KB

    • memory/1464-35-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1464-72-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1464-21-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1464-22-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1464-20-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1464-69-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1464-36-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1464-34-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1464-27-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1464-28-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1464-32-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2108-1-0x0000000002950000-0x00000000029ED000-memory.dmp

      Filesize

      628KB

    • memory/2108-2-0x00000000029F0000-0x0000000002B0B000-memory.dmp

      Filesize

      1.1MB

    • memory/2232-73-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2232-50-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2232-53-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2232-54-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/2672-78-0x00000000022F0000-0x00000000022F4000-memory.dmp

      Filesize

      16KB

    • memory/2672-77-0x0000000000A10000-0x0000000000B10000-memory.dmp

      Filesize

      1024KB

    • memory/3048-97-0x0000000000A70000-0x0000000000B70000-memory.dmp

      Filesize

      1024KB

    • memory/3192-48-0x0000000000570000-0x0000000000670000-memory.dmp

      Filesize

      1024KB

    • memory/3192-49-0x0000000002090000-0x00000000020C1000-memory.dmp

      Filesize

      196KB

    • memory/4352-76-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/4352-81-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/4352-83-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/4352-84-0x0000000000410000-0x00000000004D9000-memory.dmp

      Filesize

      804KB

    • memory/4488-17-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4488-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4488-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4488-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4488-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4516-115-0x00000000009E0000-0x0000000000AE0000-memory.dmp

      Filesize

      1024KB