Analysis

  • max time kernel
    294s
  • max time network
    161s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    15/01/2024, 04:51

General

  • Target

    59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7.exe

  • Size

    832KB

  • MD5

    cea0a866170628872d7005075d21d53c

  • SHA1

    62e1130b5f8ceac4319411a88f99edd4ec34e7de

  • SHA256

    59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7

  • SHA512

    62158e1c7dd966b3ba8af87e5f0d4e012c3267d48fd7dc731c7f7d24fe0cba2921f43cc68c194d3153879f5ac200cf3159a4ff34dc4ffe47b9468290a62fd458

  • SSDEEP

    12288:zByfvgQflKMWCKkJet0TPJlXn7VG0QWomYJ5LkOecH+6XYstKP8276PdbW1n2/IJ:q1fEL7dOnnIdXr7H+6In376xW1nsdy

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .cdwe

  • offline_id

    dSwr1XNNi5cIitB5eDPbMANcusB1dWGDB8ToUnt1

  • payload_url

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

    http://zexeq.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-e21iz7dS58 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: 0842ASdw

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 2 IoCs
  • Loads dropped DLL 6 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7.exe
    "C:\Users\Admin\AppData\Local\Temp\59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1936
    • C:\Users\Admin\AppData\Local\Temp\59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7.exe
      "C:\Users\Admin\AppData\Local\Temp\59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2756
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\7170ac16-fcf1-4194-beae-248cec9dca22" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2380
      • C:\Users\Admin\AppData\Local\Temp\59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7.exe
        "C:\Users\Admin\AppData\Local\Temp\59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2480
        • C:\Users\Admin\AppData\Local\Temp\59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7.exe
          "C:\Users\Admin\AppData\Local\Temp\59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2604
          • C:\Users\Admin\AppData\Local\67aece4f-4149-4231-9706-84d43d71e444\build2.exe
            "C:\Users\Admin\AppData\Local\67aece4f-4149-4231-9706-84d43d71e444\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2672
            • C:\Users\Admin\AppData\Local\67aece4f-4149-4231-9706-84d43d71e444\build2.exe
              "C:\Users\Admin\AppData\Local\67aece4f-4149-4231-9706-84d43d71e444\build2.exe"
              6⤵
              • Executes dropped EXE
              • Modifies system certificate store
              • Suspicious use of WriteProcessMemory
              PID:268
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 268 -s 1456
                7⤵
                • Loads dropped DLL
                • Program crash
                PID:604

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

          dca61f9c346f08c3bd0c46e09a022cb3

          SHA1

          223dea0ea360d1ecef95316e66ae818835fcbead

          SHA256

          274f80a1f36ac39f6ffb750120c1c94de26c7e98bc169d4e9cf7feecc75788c5

          SHA512

          bc6ec49a04c65540b7d8b0d314994921516644cdcdb5ecf94e3511ded2920fc380dd5af51678af5fec9e3bb9824f0e5d3cbc7fa57b6273ba8518293fe32d5e61

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

          Filesize

          344B

          MD5

          d0fe69a308f7dd4012802ba1e0bbe66d

          SHA1

          3d33f18c374266151054f7ef7e9b749da9d07c6c

          SHA256

          b9fce032c9c31ba175ca26c37a84ca6c802159a6e608740d857e11fc9bff3327

          SHA512

          8a3ce9104c601aaffeb09039c2fb91532077de47f5f867f749553d6aac5acd59adfd40c29d21f384b7de8e9c6c9646b518e612c266b82410e04fa4cad40a9e4b

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

          Filesize

          344B

          MD5

          659e69a677f70a2a7ba39e08c7e7096b

          SHA1

          4d44fd5df49d3baa5bdc6c61b5c513152089e1d3

          SHA256

          a28f564ab24d14258c8620c47206521098090add4e96508c394892280a6f427b

          SHA512

          44b3a2374accdfdfad171e721d89c4feab6c0bbc793c2836935274c3826c0f854cb80e0c74fba14ca2c05c758caafc1b184d8749ee64a3f049537b61a5ece621

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

          Filesize

          392B

          MD5

          d9da13bc21ae5d75d0c5d6e57fef7f6f

          SHA1

          57e5a4e1c2ec5db133c2002aa1cab74c9b8cbee2

          SHA256

          3b52e259775f247ded30bb1d8e8b8e9b371782e623f85500a41e55ce9c92ab70

          SHA512

          70e036c2ed4e35e0daef4ba02dee49b3f17f64d79db70b5e6d327063d720ad29774b8365602c1c978a4f235259a26035f9314c209880b778633a9cc2474136d4

        • C:\Users\Admin\AppData\Local\7170ac16-fcf1-4194-beae-248cec9dca22\59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7.exe

          Filesize

          832KB

          MD5

          cea0a866170628872d7005075d21d53c

          SHA1

          62e1130b5f8ceac4319411a88f99edd4ec34e7de

          SHA256

          59c0177643779444e51a54f10e3aefaa1849b0dd8e8c9d4b18e62f153a8decb7

          SHA512

          62158e1c7dd966b3ba8af87e5f0d4e012c3267d48fd7dc731c7f7d24fe0cba2921f43cc68c194d3153879f5ac200cf3159a4ff34dc4ffe47b9468290a62fd458

        • C:\Users\Admin\AppData\Local\Temp\Cab55BE.tmp

          Filesize

          65KB

          MD5

          ac05d27423a85adc1622c714f2cb6184

          SHA1

          b0fe2b1abddb97837ea0195be70ab2ff14d43198

          SHA256

          c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

          SHA512

          6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

        • C:\Users\Admin\AppData\Local\Temp\Tar6C3C.tmp

          Filesize

          171KB

          MD5

          9c0c641c06238516f27941aa1166d427

          SHA1

          64cd549fb8cf014fcd9312aa7a5b023847b6c977

          SHA256

          4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

          SHA512

          936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

        • \Users\Admin\AppData\Local\67aece4f-4149-4231-9706-84d43d71e444\build2.exe

          Filesize

          358KB

          MD5

          c4070da9f9b0581171af16e681ccdff8

          SHA1

          3fb4182921fdc3acd7873ebe113ac5522585312a

          SHA256

          26063c78e5418610471a9f3a00a155d7d1e5b29856e1979ba3bdc42681a871d0

          SHA512

          c7569cea7f1a841e7cac9cd41287dba3bcacf2cf9dee7bece88800848a7ad5dc4cd2bdc896c7389f0f1144079bbe168048b3f722bcd76fa5d6e14f3081bb6427

        • memory/268-71-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/268-73-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/268-194-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/268-68-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/268-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1936-1-0x0000000001CE0000-0x0000000001D72000-memory.dmp

          Filesize

          584KB

        • memory/1936-3-0x0000000001D80000-0x0000000001E9B000-memory.dmp

          Filesize

          1.1MB

        • memory/1936-7-0x0000000001CE0000-0x0000000001D72000-memory.dmp

          Filesize

          584KB

        • memory/1936-0-0x0000000001CE0000-0x0000000001D72000-memory.dmp

          Filesize

          584KB

        • memory/2480-29-0x0000000000220000-0x00000000002B2000-memory.dmp

          Filesize

          584KB

        • memory/2480-30-0x0000000000220000-0x00000000002B2000-memory.dmp

          Filesize

          584KB

        • memory/2604-49-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2604-35-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2604-50-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2604-201-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2604-199-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2604-36-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2604-198-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2604-72-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2604-196-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2672-67-0x0000000000230000-0x000000000027B000-memory.dmp

          Filesize

          300KB

        • memory/2672-65-0x00000000008C0000-0x00000000009C0000-memory.dmp

          Filesize

          1024KB

        • memory/2756-9-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2756-8-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2756-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2756-27-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2756-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB