Analysis

  • max time kernel
    296s
  • max time network
    296s
  • platform
    windows10-1703_x64
  • resource
    win10-20231220-en
  • resource tags

    arch:x64arch:x86image:win10-20231220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    15/01/2024, 04:52

General

  • Target

    5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95.exe

  • Size

    761KB

  • MD5

    9258bfe8d8bbabf415a67bf39d7c912c

  • SHA1

    0fe9c215d1fc9430bf9c055d446c7805f79f6725

  • SHA256

    5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95

  • SHA512

    7b26ecff8224797aa5d7972e0d7a46d4743975d2cefff75c5d8d99aa57a6fd5b72a97faff6f1a08bb75b8254c41a556c0756fcdda7800e5890de1a6699ba6fb6

  • SSDEEP

    12288:0TSAO9OIqmUVIp+urd57CyDjXNodk1lOCrIxkbawucOV3bRxT+/:0RI2VIp+Yd9TNoorIxkBtM3txT+/

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 7 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 11 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 7 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\5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95.exe
    "C:\Users\Admin\AppData\Local\Temp\5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4328
    • C:\Users\Admin\AppData\Local\Temp\5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95.exe
      "C:\Users\Admin\AppData\Local\Temp\5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:312
      • C:\Users\Admin\AppData\Local\Temp\5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95.exe
        "C:\Users\Admin\AppData\Local\Temp\5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1540
        • C:\Users\Admin\AppData\Local\Temp\5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95.exe
          "C:\Users\Admin\AppData\Local\Temp\5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4812
          • C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build2.exe
            "C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1528
            • C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build2.exe
              "C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:2960
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2960 -s 1900
                7⤵
                • Program crash
                PID:1192
          • C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build3.exe
            "C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1280
            • C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build3.exe
              "C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:3036
              • 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:4848
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\585116ff-9e61-4b84-8672-c176542c915b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4604
  • 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:2060
    • 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:3796
  • 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"
    1⤵
    • Creates scheduled task(s)
    PID:4864
  • 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:1800
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:2604
  • 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:4656
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4528
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    PID:2692

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

          757a07870e69f57f149145e1d4a4489c

          SHA1

          318a8db2745aa47ed357613926488370ee3d47d9

          SHA256

          b549d996e99b8431e3154cef5e1db89aa5aa170a9ed8129a88f579e05611fdb4

          SHA512

          6bcabc6ac157aeea1eb0c3965e856247c966a8de7f60b867125c891a0c31b583a57d5a721166bf5c16dafd4d41fc1a85407a22fd070baf5ea957ffae1d43746e

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

          Filesize

          392B

          MD5

          b8707bfeb84a09b164e775df63f64259

          SHA1

          cd21c87e47fddecea3cdda868056f7b3aef98755

          SHA256

          61c9517cf9d89cdceb31ef167220083caead72cb8e8098e08fa0f4734eb46004

          SHA512

          49a66036e35db78a0c1bc76b4969f9c7cde330537f1f0c397d4acf8b979f34e65f8e2e7ef5ebaeb5b15d0ca1d9f3eba35da53ca50ddb1ae3b98ceef89e376f1f

        • C:\Users\Admin\AppData\Local\585116ff-9e61-4b84-8672-c176542c915b\5ac99bbe691224fd287b1779b9e1cdf072c5d9630953f5a4df5d49398d434e95.exe

          Filesize

          668KB

          MD5

          48b85455400096f7d930911abbe46a65

          SHA1

          bea2888f3cd2ea8676ce646e16d50d336e6df729

          SHA256

          b603024519b976c837d8167dac15c2a0ae1fe9905a49304c341898b45989b783

          SHA512

          1fa6c637666f0dfc2434279705b6cd4f82720a2f668fcba84848c16215286633baf18c56bcd16bf7fbe2992f36624cc7b42ac87dfa221187d7e8746ca0746643

        • C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build2.exe

          Filesize

          358KB

          MD5

          c4070da9f9b0581171af16e681ccdff8

          SHA1

          3fb4182921fdc3acd7873ebe113ac5522585312a

          SHA256

          26063c78e5418610471a9f3a00a155d7d1e5b29856e1979ba3bdc42681a871d0

          SHA512

          c7569cea7f1a841e7cac9cd41287dba3bcacf2cf9dee7bece88800848a7ad5dc4cd2bdc896c7389f0f1144079bbe168048b3f722bcd76fa5d6e14f3081bb6427

        • C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build2.exe

          Filesize

          127KB

          MD5

          7ac1437359ea9ecc0d046ee6c34ad527

          SHA1

          0aa81e1e4990744597f306923aaf826d594378af

          SHA256

          4af1be3ae2ec6679b5cf1d938de4cd061070ca66570e085e4c8ba6d7c04e3ad7

          SHA512

          34b9f22235e4dc607e5b3d96e2b822c64493150ebe5cbefb32f3f962c66cb946aae2401dfa3a69825cfb7d94c2c8ce2bcacd56bc29828fdf8191a73671e2a56e

        • C:\Users\Admin\AppData\Local\92f2ab59-ce21-44ad-b703-80dd3ef88536\build3.exe

          Filesize

          299KB

          MD5

          41b883a061c95e9b9cb17d4ca50de770

          SHA1

          1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

          SHA256

          fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

          SHA512

          cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          111KB

          MD5

          98e9c79f0850f9fd27813ff508ebdf6e

          SHA1

          ef4dc6f8b95cd93187772221d782654874c3b02f

          SHA256

          db37610e462afc67ca1af1253e097fca18e4ee00706950fbfa1f9e8d07eab01f

          SHA512

          734c80dd74bebdafef2784c29dde86f083908b2ba4143bbfe4f7f9676a3a02082904bb87f6dc3dfb909191b844a8e9bbb9eda70d68e11d251f466c25a52e8d26

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          34KB

          MD5

          9fd4860b8a74aedf22a69df7196af20f

          SHA1

          bcb51626359dfe12108d0d350aba604dc0d5c251

          SHA256

          91ae6d89ff0b9ec7160d7a949aa0afaae1732647a4120b4dd55ff5598212e86e

          SHA512

          b5ce9297c3b4f76d32fa0fa9eb8c68d2b51d61d4b5fca83211386080c6382414e715c2fc437be73b0177ba846cd79a871e2f7af595f15e6ecb7c7b60ed3129b4

        • memory/312-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/312-17-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/312-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/312-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/312-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1280-76-0x00000000008E0000-0x00000000008E4000-memory.dmp

          Filesize

          16KB

        • memory/1280-74-0x0000000000979000-0x000000000098A000-memory.dmp

          Filesize

          68KB

        • memory/1528-52-0x00000000006A2000-0x00000000006CA000-memory.dmp

          Filesize

          160KB

        • memory/1528-53-0x0000000002090000-0x00000000020DB000-memory.dmp

          Filesize

          300KB

        • memory/1540-20-0x0000000002140000-0x00000000021DF000-memory.dmp

          Filesize

          636KB

        • memory/1800-128-0x0000000000AE0000-0x0000000000BE0000-memory.dmp

          Filesize

          1024KB

        • memory/2060-104-0x0000000000A80000-0x0000000000B80000-memory.dmp

          Filesize

          1024KB

        • memory/2960-47-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/2960-54-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/2960-51-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/2960-67-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/3036-78-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/3036-79-0x0000000000410000-0x00000000004D5000-memory.dmp

          Filesize

          788KB

        • memory/3036-75-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/3036-71-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4328-1-0x0000000002110000-0x00000000021AF000-memory.dmp

          Filesize

          636KB

        • memory/4328-2-0x0000000002210000-0x000000000232B000-memory.dmp

          Filesize

          1.1MB

        • memory/4656-155-0x000000000085E000-0x000000000086E000-memory.dmp

          Filesize

          64KB

        • memory/4812-24-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-64-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-38-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-36-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-37-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-30-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-23-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB