Analysis

  • max time kernel
    298s
  • max time network
    166s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    15/01/2024, 04:49

General

  • Target

    2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470.exe

  • Size

    845KB

  • MD5

    b8b236e9fab508d1ed85fc4ad0843ef5

  • SHA1

    4366140de33fd27603f8aeb5f26d395e5d9a51c8

  • SHA256

    2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470

  • SHA512

    fdb986be769977940c551d0d331c903879761802555fd8df9b82cc9740e28d8bbced1955bd786bee268e2bb4b3734e4ac415b29bcbf5da806b5095beb85c0f74

  • SSDEEP

    12288:slu4ya2xb/wGoF2YgLiGVC6q4ddtrRjmg8WW8GyeK7rX4IreBEM1/hjxq9:l464ZFHTGg6FxrFx8PyeK7rX86Aa9

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .cdpo

  • offline_id

    Bn3q97hwLouKbhkQRNO4SeV07gjdEQVm8NKhg0t1

  • payload_url

    http://brusuax.com/dl/build2.exe

    http://habrafa.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. You can get and look video overview decrypt tool: https://we.tl/t-FCWSCsjEWS Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0844OSkw

rsa_pubkey.plain

Signatures

  • Detect Vidar Stealer 5 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 12 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 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.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470.exe
    "C:\Users\Admin\AppData\Local\Temp\2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2216
    • C:\Users\Admin\AppData\Local\Temp\2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470.exe
      "C:\Users\Admin\AppData\Local\Temp\2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2308
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\11da1ed9-3ab4-46ca-abb1-0fd1a7cfbc85" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2664
      • C:\Users\Admin\AppData\Local\Temp\2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470.exe
        "C:\Users\Admin\AppData\Local\Temp\2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2552
        • C:\Users\Admin\AppData\Local\Temp\2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470.exe
          "C:\Users\Admin\AppData\Local\Temp\2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3008
          • C:\Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build2.exe
            "C:\Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:740
            • C:\Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build2.exe
              "C:\Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build2.exe"
              6⤵
              • Executes dropped EXE
              • Modifies system certificate store
              • Suspicious use of WriteProcessMemory
              PID:2604
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 1460
                7⤵
                • Loads dropped DLL
                • Program crash
                PID:2176
          • C:\Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build3.exe
            "C:\Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2800
            • C:\Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build3.exe
              "C:\Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:1960
              • 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:1440
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {4AFDD69A-4276-4491-ACB3-D1D15EC0CEEB} S-1-5-21-3308111660-3636268597-2291490419-1000:JUBFGPHD\Admin:Interactive:[1]
    1⤵
      PID:2600
      • 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:2104
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2256
          • 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:2988
      • 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:3016
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1180
      • 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:1504
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1580
      • 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:2668
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2248

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

            Filesize

            1KB

            MD5

            b7470a9aa569b259d4c2bb3b80ae3aa3

            SHA1

            093290296b7f1e402ef96e4b33a88f064aa401eb

            SHA256

            ee8aeed77dd9f1631fa75845214d75bfe04951a61892410ee369035e13fd14c6

            SHA512

            4da3fc09260692f159c37b068664852931b712c8173de5e4b294799ac33ecf179055aaeb016fd0afad88cbfc50a571c4c88033dca56a573431af7462ea7979be

          • 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

            474e8bc1d6ed0ea9ace8de2fdc236b78

            SHA1

            61f6de7dbfb0613de91ad30fe5a234d0ffed596a

            SHA256

            505a775131700a08b3a2878d4f5edcfd46f316d48baf0334348b10cc2084bb04

            SHA512

            1b5564e1474e5e8135ec95de74e826c34005322e2c71bfbb685decda97e73cf65b13401f318b624cec1a61eb11261cbaf3ef231d95c1517e5e4a7467930f2236

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

            Filesize

            344B

            MD5

            e1d57fe74b613a0fbb7dfb50d72cd7f8

            SHA1

            88fb4afde2476c87ee1475656e3ab231de479bd2

            SHA256

            d7d2e38460bf8599297d1cd383cd4885c29b74e35bc5ec34dcde50bb5d678f9f

            SHA512

            9411e49cf815cbd07b1eff2793e1603b1a38ed3ce54ba5f91d537488478454a8abeed5f4da2510d33a0a741d1e99d7bade8b35656d3b1e54f90176a191680f47

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

            Filesize

            344B

            MD5

            b5279abd0f2814821a433529fb5a3c1a

            SHA1

            08101db46d899c2b8d7cee24ba5c20317a93b155

            SHA256

            2e9b8b8f128f0fb3a724eec5edaf783b8c1d6977a9c1da15a368969a5276aed8

            SHA512

            cf8563f42078f4f5d7eb6c993547e2a15f9f2d9350c1df2e1ccfb34ce8bfef4399815e30ff7ffe39bfffca7fa42a62b77baab4eadf19a372e9054fc8c6f835c5

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

            Filesize

            392B

            MD5

            d3df90005c5a4c3ff5ac8e9034d57b3f

            SHA1

            dfa24520cfe380b7770f6114e50c6aaf2405069c

            SHA256

            3871b702db80ce7a24b40e8f201e2fe57c77e9844b13cbe8ce06490385fc15a2

            SHA512

            01a57f94756794c3b9b8448d4045810ef8f9f7df7fde649ed5f9aa33e1ffc938aaee9f811c8eada116210ae3fd32df8ea46a6ba52f558dae6cda1deba3c44d95

          • C:\Users\Admin\AppData\Local\11da1ed9-3ab4-46ca-abb1-0fd1a7cfbc85\2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470.exe

            Filesize

            845KB

            MD5

            b8b236e9fab508d1ed85fc4ad0843ef5

            SHA1

            4366140de33fd27603f8aeb5f26d395e5d9a51c8

            SHA256

            2976b9cc47bd3854337e3653128eec2ac18da76a93941b5cc0becd0ba4926470

            SHA512

            fdb986be769977940c551d0d331c903879761802555fd8df9b82cc9740e28d8bbced1955bd786bee268e2bb4b3734e4ac415b29bcbf5da806b5095beb85c0f74

          • C:\Users\Admin\AppData\Local\Temp\Cab8D71.tmp

            Filesize

            65KB

            MD5

            ac05d27423a85adc1622c714f2cb6184

            SHA1

            b0fe2b1abddb97837ea0195be70ab2ff14d43198

            SHA256

            c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

            SHA512

            6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

          • C:\Users\Admin\AppData\Local\Temp\TarA3B0.tmp

            Filesize

            171KB

            MD5

            9c0c641c06238516f27941aa1166d427

            SHA1

            64cd549fb8cf014fcd9312aa7a5b023847b6c977

            SHA256

            4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

            SHA512

            936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

          • C:\Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build2.exe

            Filesize

            64KB

            MD5

            5fdbc7061921001b06f5bcd8f1fd3e27

            SHA1

            bf1bb8bc1113827f3c615352fb7105d71ebf6e4d

            SHA256

            4f78c94ab539b688956081dac8e29b1505192f195c3d95be26f97c6c22fd5fe1

            SHA512

            eafd539c4c6489f3f522f1a05be71d8693c95db24a196361814d89c4173c405fda15258746886a42d8916bc9621ad8aab2c441f6c42512d25184b8af69373588

          • C:\Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build3.exe

            Filesize

            299KB

            MD5

            41b883a061c95e9b9cb17d4ca50de770

            SHA1

            1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

            SHA256

            fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

            SHA512

            cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

          • \Users\Admin\AppData\Local\da39936c-6829-4206-9339-c852d37efc38\build2.exe

            Filesize

            358KB

            MD5

            c4070da9f9b0581171af16e681ccdff8

            SHA1

            3fb4182921fdc3acd7873ebe113ac5522585312a

            SHA256

            26063c78e5418610471a9f3a00a155d7d1e5b29856e1979ba3bdc42681a871d0

            SHA512

            c7569cea7f1a841e7cac9cd41287dba3bcacf2cf9dee7bece88800848a7ad5dc4cd2bdc896c7389f0f1144079bbe168048b3f722bcd76fa5d6e14f3081bb6427

          • memory/740-78-0x0000000000460000-0x00000000004AB000-memory.dmp

            Filesize

            300KB

          • memory/740-76-0x00000000002A0000-0x00000000002C7000-memory.dmp

            Filesize

            156KB

          • memory/1504-314-0x0000000000920000-0x0000000000A20000-memory.dmp

            Filesize

            1024KB

          • memory/1504-298-0x0000000000920000-0x0000000000A20000-memory.dmp

            Filesize

            1024KB

          • memory/1960-220-0x0000000000410000-0x0000000000477000-memory.dmp

            Filesize

            412KB

          • memory/1960-211-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/1960-204-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/1960-219-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/2104-243-0x0000000000900000-0x0000000000A00000-memory.dmp

            Filesize

            1024KB

          • memory/2216-0-0x0000000002180000-0x0000000002212000-memory.dmp

            Filesize

            584KB

          • memory/2216-1-0x0000000002180000-0x0000000002212000-memory.dmp

            Filesize

            584KB

          • memory/2216-2-0x0000000002220000-0x000000000233B000-memory.dmp

            Filesize

            1.1MB

          • memory/2308-8-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2308-26-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2308-7-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2308-5-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2308-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2552-28-0x0000000000220000-0x00000000002B2000-memory.dmp

            Filesize

            584KB

          • memory/2552-34-0x0000000000220000-0x00000000002B2000-memory.dmp

            Filesize

            584KB

          • memory/2552-29-0x0000000000220000-0x00000000002B2000-memory.dmp

            Filesize

            584KB

          • memory/2604-72-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2604-84-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/2604-74-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/2604-79-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/2604-227-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/2668-330-0x0000000000860000-0x0000000000960000-memory.dmp

            Filesize

            1024KB

          • memory/2800-194-0x0000000000970000-0x0000000000A70000-memory.dmp

            Filesize

            1024KB

          • memory/2800-195-0x0000000000220000-0x0000000000224000-memory.dmp

            Filesize

            16KB

          • memory/3008-35-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3008-91-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3008-58-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3008-57-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3008-56-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3008-54-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3008-50-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3008-49-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3008-36-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3016-269-0x00000000008F0000-0x00000000009F0000-memory.dmp

            Filesize

            1024KB