Analysis

  • max time kernel
    298s
  • max time network
    201s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/03/2024, 22:30

General

  • Target

    5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe

  • Size

    798KB

  • MD5

    96b8da4c66a00c836439f6a65cd9a9f6

  • SHA1

    b89676216818fc360ddad03dee21fcdc463bd725

  • SHA256

    5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7

  • SHA512

    b5bd18d2b675f433360a60f3d92e36db3186ab8e86a7ad477403bc7e253ff04cf2721d747bca7251efba0d720cbc14254adf92cd0efcd5992551d65c9ade81a1

  • SSDEEP

    12288:83FcZ1qroZvCbPslVKOdtZ5LoYf7IX3tSzm0WKrqksDHaAsF:YcsRP0wOd1Lot30WKuksDHFs

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .vook

  • 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: 0857PsawqS

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 14 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
  • Loads dropped DLL 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 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.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe
    "C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2940
    • C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe
      "C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2176
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\284331a6-cdb0-4135-83ee-1b85179108ec" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2668
      • C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe
        "C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2596
        • C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe
          "C:\Users\Admin\AppData\Local\Temp\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2600
          • C:\Users\Admin\AppData\Local\33a713da-cb59-4246-8296-57e711e9c423\build2.exe
            "C:\Users\Admin\AppData\Local\33a713da-cb59-4246-8296-57e711e9c423\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2964
            • C:\Users\Admin\AppData\Local\33a713da-cb59-4246-8296-57e711e9c423\build2.exe
              "C:\Users\Admin\AppData\Local\33a713da-cb59-4246-8296-57e711e9c423\build2.exe"
              6⤵
              • Executes dropped EXE
              • Modifies system certificate store
              • Suspicious use of WriteProcessMemory
              PID:2476
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2476 -s 1460
                7⤵
                • Loads dropped DLL
                • Program crash
                PID:1544
          • C:\Users\Admin\AppData\Local\33a713da-cb59-4246-8296-57e711e9c423\build3.exe
            "C:\Users\Admin\AppData\Local\33a713da-cb59-4246-8296-57e711e9c423\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1500
            • C:\Users\Admin\AppData\Local\33a713da-cb59-4246-8296-57e711e9c423\build3.exe
              "C:\Users\Admin\AppData\Local\33a713da-cb59-4246-8296-57e711e9c423\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:1744
              • 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:1660
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {BCA9FDF7-DC34-4CD6-9E54-E0B815A22566} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]
    1⤵
      PID:3056
      • 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 SetThreadContext
        PID:2308
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2644
          • 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"
            4⤵
            • Creates scheduled task(s)
            PID:2880
      • 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 SetThreadContext
        PID:2724
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2856
      • 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 SetThreadContext
        PID:2036
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1536
      • 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 SetThreadContext
        PID:2344
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:992
      • 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 SetThreadContext
        PID:2848
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1248

    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\94308059B57B3142E455B38A6EB92015

            Filesize

            68KB

            MD5

            29f65ba8e88c063813cc50a4ea544e93

            SHA1

            05a7040d5c127e68c25d81cc51271ffb8bef3568

            SHA256

            1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

            SHA512

            e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

          • 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

            47c48ed7524f5b92ab6a9819ee1f56fb

            SHA1

            3581432407a5f241aabc223b139474693eca6f4d

            SHA256

            4319393de5168937710c84350435fda5ffb2023a9b7d3a0ccec720d26df6491c

            SHA512

            ae71b0147cd2ab30c80d66e8b59acffa4bfe5fb75e40651fda7b9ca84cec54b618ee34f27de9b81bde5a3dc4473c5b595100775d448ae958cad1a8aa2ae8bafb

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

            Filesize

            344B

            MD5

            5cfe82b902d4b8ace60905afc014f886

            SHA1

            ea6d6b7876e88b73a33b0ecff6d594eca84f50ac

            SHA256

            785c607bf585d6136f5af534ec3d5dab1ac101b2bf1fa082ef3d3d7b5b550151

            SHA512

            6a7972ed11b013b5dce5d98912398309ce806162598b83b6e75f40762403844b3b930b591f53da0b681b5dae4fc92f0df88525c235fb2badeb44c5992dda8c3d

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

            Filesize

            392B

            MD5

            5c1b7cf24fdcb7d67b64512893dc20cb

            SHA1

            cb318e4cdcc42a8d22287c5bb93d14a1db861e43

            SHA256

            041abd5730c8c38221b20a4654d4515704f2fc2e61c8fb51fdcec87c934b8f32

            SHA512

            579847b2f7ca39c8ba313d780f61973b13084a234b5c5fee4cdbae5deca3ee96ca1d3d789e6ebfa745daba06181db461792940786337996ec82eb0c5609dd68e

          • C:\Users\Admin\AppData\Local\284331a6-cdb0-4135-83ee-1b85179108ec\5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7.exe

            Filesize

            798KB

            MD5

            96b8da4c66a00c836439f6a65cd9a9f6

            SHA1

            b89676216818fc360ddad03dee21fcdc463bd725

            SHA256

            5bcf652c96d961dda03c272d11ea04e25efefbcbff3c4b83e572c3ac523813f7

            SHA512

            b5bd18d2b675f433360a60f3d92e36db3186ab8e86a7ad477403bc7e253ff04cf2721d747bca7251efba0d720cbc14254adf92cd0efcd5992551d65c9ade81a1

          • C:\Users\Admin\AppData\Local\Temp\Cab3360.tmp

            Filesize

            65KB

            MD5

            ac05d27423a85adc1622c714f2cb6184

            SHA1

            b0fe2b1abddb97837ea0195be70ab2ff14d43198

            SHA256

            c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

            SHA512

            6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

          • C:\Users\Admin\AppData\Local\Temp\Tar479C.tmp

            Filesize

            171KB

            MD5

            9c0c641c06238516f27941aa1166d427

            SHA1

            64cd549fb8cf014fcd9312aa7a5b023847b6c977

            SHA256

            4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

            SHA512

            936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

          • C:\Users\Admin\AppData\Local\Temp\Tar48CA.tmp

            Filesize

            177KB

            MD5

            435a9ac180383f9fa094131b173a2f7b

            SHA1

            76944ea657a9db94f9a4bef38f88c46ed4166983

            SHA256

            67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

            SHA512

            1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

          • \Users\Admin\AppData\Local\33a713da-cb59-4246-8296-57e711e9c423\build2.exe

            Filesize

            277KB

            MD5

            8dae8b6a6be6e3527183594d1c26a2d3

            SHA1

            b87e40cee60869a36e79c88c8a3a34baf0bc4889

            SHA256

            afce72cd3bc717c784962083066e3ede2b0aaadbe0908ec7360096c923774fa5

            SHA512

            0bf065700db647efba39a13a58242a595907e6c11885575cf0bdad9e23ab40583c8a6535464e46d75d075e20d88b7a6305a761df9da787fdc8728483dd48f96e

          • \Users\Admin\AppData\Local\33a713da-cb59-4246-8296-57e711e9c423\build3.exe

            Filesize

            299KB

            MD5

            41b883a061c95e9b9cb17d4ca50de770

            SHA1

            1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

            SHA256

            fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

            SHA512

            cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

          • memory/1500-173-0x00000000009B2000-0x00000000009C3000-memory.dmp

            Filesize

            68KB

          • memory/1500-174-0x0000000000220000-0x0000000000224000-memory.dmp

            Filesize

            16KB

          • memory/1744-167-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/1744-175-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/1744-169-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/1744-177-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/2036-308-0x00000000008C0000-0x00000000009C0000-memory.dmp

            Filesize

            1024KB

          • memory/2176-9-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2176-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2176-5-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2176-27-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2176-8-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2308-254-0x0000000000910000-0x0000000000A10000-memory.dmp

            Filesize

            1024KB

          • memory/2344-340-0x0000000000870000-0x0000000000970000-memory.dmp

            Filesize

            1024KB

          • memory/2476-199-0x0000000000400000-0x0000000000644000-memory.dmp

            Filesize

            2.3MB

          • memory/2476-245-0x0000000000400000-0x0000000000644000-memory.dmp

            Filesize

            2.3MB

          • memory/2476-72-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2476-76-0x0000000000400000-0x0000000000644000-memory.dmp

            Filesize

            2.3MB

          • memory/2476-79-0x0000000000400000-0x0000000000644000-memory.dmp

            Filesize

            2.3MB

          • memory/2476-80-0x0000000000400000-0x0000000000644000-memory.dmp

            Filesize

            2.3MB

          • memory/2596-30-0x0000000000DF0000-0x0000000000E82000-memory.dmp

            Filesize

            584KB

          • memory/2596-28-0x0000000000DF0000-0x0000000000E82000-memory.dmp

            Filesize

            584KB

          • memory/2600-35-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2600-49-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2600-36-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2600-164-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2600-58-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2600-57-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2600-56-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2600-54-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2600-50-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2724-285-0x0000000000870000-0x0000000000970000-memory.dmp

            Filesize

            1024KB

          • memory/2848-370-0x0000000000902000-0x0000000000912000-memory.dmp

            Filesize

            64KB

          • memory/2940-0-0x00000000002D0000-0x0000000000362000-memory.dmp

            Filesize

            584KB

          • memory/2940-7-0x00000000002D0000-0x0000000000362000-memory.dmp

            Filesize

            584KB

          • memory/2940-2-0x0000000002480000-0x000000000259B000-memory.dmp

            Filesize

            1.1MB

          • memory/2940-1-0x00000000002D0000-0x0000000000362000-memory.dmp

            Filesize

            584KB

          • memory/2964-75-0x0000000000230000-0x0000000000261000-memory.dmp

            Filesize

            196KB

          • memory/2964-73-0x0000000000660000-0x0000000000760000-memory.dmp

            Filesize

            1024KB