Analysis

  • max time kernel
    146s
  • max time network
    157s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-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 5 IoCs
  • Detected Djvu ransomware 17 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 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:4368
    • C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe
      "C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2192
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ceaef977-36ba-4d27-b502-377e391192eb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1424
      • 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:4044
        • C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe
          "C:\Users\Admin\AppData\Local\Temp\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2088
          • C:\Users\Admin\AppData\Local\ce5ebcc1-134a-4c97-8aaf-6e35cb6d5ca6\build2.exe
            "C:\Users\Admin\AppData\Local\ce5ebcc1-134a-4c97-8aaf-6e35cb6d5ca6\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:980
            • C:\Users\Admin\AppData\Local\ce5ebcc1-134a-4c97-8aaf-6e35cb6d5ca6\build2.exe
              "C:\Users\Admin\AppData\Local\ce5ebcc1-134a-4c97-8aaf-6e35cb6d5ca6\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:4496
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 4496 -s 2276
                7⤵
                • Program crash
                PID:3344
          • C:\Users\Admin\AppData\Local\ce5ebcc1-134a-4c97-8aaf-6e35cb6d5ca6\build3.exe
            "C:\Users\Admin\AppData\Local\ce5ebcc1-134a-4c97-8aaf-6e35cb6d5ca6\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1212
            • C:\Users\Admin\AppData\Local\ce5ebcc1-134a-4c97-8aaf-6e35cb6d5ca6\build3.exe
              "C:\Users\Admin\AppData\Local\ce5ebcc1-134a-4c97-8aaf-6e35cb6d5ca6\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:3484
              • 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:4196
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 352 -p 4496 -ip 4496
    1⤵
      PID:3600
    • 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:3096
      • 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:4880
        • 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:4116
    • 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:768
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
        • Executes dropped EXE
        PID:3500

    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

      009e04aea4a55fb454d1369300825959

      SHA1

      97e568df62cef96e8a648c3614450aa9ba61b7a2

      SHA256

      c57eaa5c761c70720d20316083ce7be6cac0e35caac2e285ef26a7a7d3941f34

      SHA512

      a1708773730c6aaea925aa55c5baed9921a991322ea70a24f4a517d1fa650273a87c88a68e02c332ce232273175483dcca42925bd2a771769f35a968f52444b0

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

      Filesize

      392B

      MD5

      c1cbdff0651d924649cd6f05e6d04289

      SHA1

      215d5d5d8d841ec851fb0f26b98f7d6a3c5fc6a9

      SHA256

      f98b91203d7c6eeb96442bc576879a6c695ba3f78c6e05f7ad46e5b4e083fba3

      SHA512

      604f572cb91bd216b51e4a53ffc613ba4f55ca1b7a7dd781095a4d79e0d6ead89a2f8bb68e1d2f35b1b8c1a9046c416b09dda2b78e9fe2cd971317f72906d5b4

    • C:\Users\Admin\AppData\Local\ce5ebcc1-134a-4c97-8aaf-6e35cb6d5ca6\build2.exe

      Filesize

      277KB

      MD5

      8dae8b6a6be6e3527183594d1c26a2d3

      SHA1

      b87e40cee60869a36e79c88c8a3a34baf0bc4889

      SHA256

      afce72cd3bc717c784962083066e3ede2b0aaadbe0908ec7360096c923774fa5

      SHA512

      0bf065700db647efba39a13a58242a595907e6c11885575cf0bdad9e23ab40583c8a6535464e46d75d075e20d88b7a6305a761df9da787fdc8728483dd48f96e

    • C:\Users\Admin\AppData\Local\ce5ebcc1-134a-4c97-8aaf-6e35cb6d5ca6\build3.exe

      Filesize

      299KB

      MD5

      41b883a061c95e9b9cb17d4ca50de770

      SHA1

      1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

      SHA256

      fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

      SHA512

      cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

    • C:\Users\Admin\AppData\Local\ceaef977-36ba-4d27-b502-377e391192eb\7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15.exe

      Filesize

      759KB

      MD5

      dd9f4d7ce1d178bf023e7e778032d3c4

      SHA1

      b68fa852c44b7f472b0a17aca512a744f07e3746

      SHA256

      7f3d7c21521c1281518be26e45a38ae339caa041fed21e139f6052c2fb90bd15

      SHA512

      a66dc2aeafcf4c2d96122c7e8575abd295a143273a284fad1bbf84a127b6f336105bd379a5137673d320725d83d3b21ec95f7da701486ee1c0f854187b3e0c1e

    • memory/768-121-0x00000000009E0000-0x0000000000AE0000-memory.dmp

      Filesize

      1024KB

    • memory/980-53-0x0000000002270000-0x00000000022A1000-memory.dmp

      Filesize

      196KB

    • memory/980-52-0x0000000000790000-0x0000000000890000-memory.dmp

      Filesize

      1024KB

    • memory/980-92-0x0000000002270000-0x00000000022A1000-memory.dmp

      Filesize

      196KB

    • memory/1212-82-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

      Filesize

      1024KB

    • memory/1212-85-0x0000000000A50000-0x0000000000A54000-memory.dmp

      Filesize

      16KB

    • memory/2088-37-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2088-74-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2088-23-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2088-29-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2088-30-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2088-34-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2088-36-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2088-24-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2088-22-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2088-79-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2192-17-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2192-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2192-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2192-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2192-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3096-105-0x0000000000A80000-0x0000000000B80000-memory.dmp

      Filesize

      1024KB

    • memory/3484-89-0x0000000000410000-0x0000000000413000-memory.dmp

      Filesize

      12KB

    • memory/3484-87-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/3484-81-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/3484-86-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/4044-20-0x0000000000D90000-0x0000000000E26000-memory.dmp

      Filesize

      600KB

    • memory/4368-1-0x0000000002870000-0x0000000002906000-memory.dmp

      Filesize

      600KB

    • memory/4368-2-0x0000000002910000-0x0000000002A2B000-memory.dmp

      Filesize

      1.1MB

    • memory/4496-77-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/4496-55-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/4496-49-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB

    • memory/4496-54-0x0000000000400000-0x0000000000644000-memory.dmp

      Filesize

      2.3MB