Analysis

  • max time kernel
    297s
  • max time network
    168s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    15/01/2024, 04:53

General

  • Target

    6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e.exe

  • Size

    811KB

  • MD5

    6e1ad02bf816694f51cee197284676d7

  • SHA1

    d77d8bfef363dac6948ffd59041520e177884b42

  • SHA256

    6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e

  • SHA512

    4a29311f123e27773287264f82bf913b0a4cbc4424aae0c3d3bd4315f3b6a280f03ef1d1bc76e920238a66aa90b49d14eb3ed6804f0450491546d093ea47bab4

  • SSDEEP

    12288:sJV6RP01LjFq2cSOW/XGXsMUBtB6yOKxipkRJJ9DsJYTM9rH+kVg4G18Tt:HINcC2X+t8nKxipkDJOH9rH+H1G

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 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 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 4 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e.exe
    "C:\Users\Admin\AppData\Local\Temp\6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2472
    • C:\Users\Admin\AppData\Local\Temp\6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e.exe
      "C:\Users\Admin\AppData\Local\Temp\6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2452
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\abf57921-7c74-4723-be80-40b0f03c9352" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2632
      • C:\Users\Admin\AppData\Local\Temp\6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e.exe
        "C:\Users\Admin\AppData\Local\Temp\6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2136
        • C:\Users\Admin\AppData\Local\Temp\6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e.exe
          "C:\Users\Admin\AppData\Local\Temp\6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:528
          • C:\Users\Admin\AppData\Local\90253e53-5843-468d-823d-d68b680094b2\build2.exe
            "C:\Users\Admin\AppData\Local\90253e53-5843-468d-823d-d68b680094b2\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1808
            • C:\Users\Admin\AppData\Local\90253e53-5843-468d-823d-d68b680094b2\build2.exe
              "C:\Users\Admin\AppData\Local\90253e53-5843-468d-823d-d68b680094b2\build2.exe"
              6⤵
              • Executes dropped EXE
              • Modifies system certificate store
              • Suspicious use of WriteProcessMemory
              PID:2568
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2568 -s 1428
                7⤵
                • Loads dropped DLL
                • Program crash
                PID:2340

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

          fe94f21ff90dc87f99969de124b03ee7

          SHA1

          b51f17060e14403927337b27cba6d0a57adcdb53

          SHA256

          8188c5bcbb7eddd139c1be81d7a9b81732f4bc765c068870e31210e0bae3343d

          SHA512

          d0923c8b7b072ee46ad967e8c45f0b5d0fd8062968dd586c49f90537aea40dfcb49adb0ca1a19d097b97aeb3b9271c751d1d9ea0b7808c64ab97ff857af40230

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

          Filesize

          344B

          MD5

          9b9d2781cd117dd292cd615ac054afbf

          SHA1

          12bca71a5adfc005d9097c7ebac021ae0c656978

          SHA256

          678257e103c879d50e9303cb57b992ace2c26d26a4aad5c45e7c5119747ab61d

          SHA512

          b48291d0970fa4545525eefb2b5561e1a0783bbc45a3b920874162019564e118d275e87e157d6d9138c71bd04830b6d4f0cdde578414e4cd908907c09757cb33

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

          Filesize

          344B

          MD5

          1d01450b6a732dd95ed5185181aaa715

          SHA1

          55a853361e26d3e915622c51c550beead21d0b03

          SHA256

          63cd63d026b88826eac3ca6fe367d8d5dbc42fd2856b0e9bf44040b0a7d86916

          SHA512

          32ff6b0ca126fe77c7864e732624191556e901db4062b891d7428da6936527ebad8b73a646432fb6698b7747299ecc462385440b95be4156865150d7341b4b83

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

          Filesize

          392B

          MD5

          9beb1dc135d2bf40a29e531f13f1d2e4

          SHA1

          01362de25af802fe5205210dcc819972ef93b7cf

          SHA256

          b0e867b73a4fe868952af35099e5fe88d5b56eddb9bacbdc6ae650220dce3854

          SHA512

          53240d976349a22e5ce8ee9d5ab0e7c6836e74cb3bb0b97c3fd47184a14e89a629d74db381d388c3259fd3429cd9e79fc8880472e0614a1a6f8853e41d01eb40

        • C:\Users\Admin\AppData\Local\Temp\CabB0F7.tmp

          Filesize

          65KB

          MD5

          ac05d27423a85adc1622c714f2cb6184

          SHA1

          b0fe2b1abddb97837ea0195be70ab2ff14d43198

          SHA256

          c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

          SHA512

          6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

        • C:\Users\Admin\AppData\Local\Temp\TarDB14.tmp

          Filesize

          171KB

          MD5

          9c0c641c06238516f27941aa1166d427

          SHA1

          64cd549fb8cf014fcd9312aa7a5b023847b6c977

          SHA256

          4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

          SHA512

          936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

        • C:\Users\Admin\AppData\Local\abf57921-7c74-4723-be80-40b0f03c9352\6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e.exe

          Filesize

          811KB

          MD5

          6e1ad02bf816694f51cee197284676d7

          SHA1

          d77d8bfef363dac6948ffd59041520e177884b42

          SHA256

          6e83d5dae916b6c88c9a3c93b6c7c55c5f582c2ecdaa97a89a0d8fc803e8113e

          SHA512

          4a29311f123e27773287264f82bf913b0a4cbc4424aae0c3d3bd4315f3b6a280f03ef1d1bc76e920238a66aa90b49d14eb3ed6804f0450491546d093ea47bab4

        • \Users\Admin\AppData\Local\90253e53-5843-468d-823d-d68b680094b2\build2.exe

          Filesize

          358KB

          MD5

          c4070da9f9b0581171af16e681ccdff8

          SHA1

          3fb4182921fdc3acd7873ebe113ac5522585312a

          SHA256

          26063c78e5418610471a9f3a00a155d7d1e5b29856e1979ba3bdc42681a871d0

          SHA512

          c7569cea7f1a841e7cac9cd41287dba3bcacf2cf9dee7bece88800848a7ad5dc4cd2bdc896c7389f0f1144079bbe168048b3f722bcd76fa5d6e14f3081bb6427

        • memory/528-71-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/528-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/528-35-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/528-195-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/528-197-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/528-198-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/528-199-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/528-48-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/528-49-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1808-66-0x0000000000230000-0x000000000027B000-memory.dmp

          Filesize

          300KB

        • memory/1808-64-0x0000000000540000-0x0000000000640000-memory.dmp

          Filesize

          1024KB

        • memory/2136-29-0x0000000000B60000-0x0000000000BF1000-memory.dmp

          Filesize

          580KB

        • memory/2136-27-0x0000000000B60000-0x0000000000BF1000-memory.dmp

          Filesize

          580KB

        • memory/2452-26-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2452-8-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2452-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2452-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2452-7-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2472-3-0x0000000002180000-0x000000000229B000-memory.dmp

          Filesize

          1.1MB

        • memory/2472-0-0x0000000000300000-0x0000000000391000-memory.dmp

          Filesize

          580KB

        • memory/2472-1-0x0000000000300000-0x0000000000391000-memory.dmp

          Filesize

          580KB

        • memory/2568-72-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/2568-171-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/2568-70-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/2568-63-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2568-67-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/2568-200-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB