Analysis

  • max time kernel
    144s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/03/2023, 13:17

General

  • Target

    f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018.exe

  • Size

    820KB

  • MD5

    505fa0d5022e160fe078352061eba6de

  • SHA1

    f0f8f84965c3f5b01133557beae2132855c4d20e

  • SHA256

    f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018

  • SHA512

    778532e64b5e8122ae8890ad08c381575540b44ba567837964886a9679c5729b2659fd6889fdb139e4d59f848216dc696f8cf1496b88bf8573f34ca733c94de6

  • SSDEEP

    12288:cHnUVZ0RzSwUAZ2+oXIxGFMOBrDdDtqAd33RpJlLuItZW:M6kSKUgorhtZvfLW

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .dazx

  • offline_id

    8EM6M9LqEzIk18qaQ87WiPQ1u84RRdej5V1ovht1

  • payload_url

    http://uaery.top/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-vbVkogQdu2 Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0666JOsie

rsa_pubkey.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199472266392

Extracted

Family

vidar

Version

��

C2

https://steamcommunity.com/profiles/76561199472266392

Signatures

  • Detected Djvu ransomware 16 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
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018.exe
    "C:\Users\Admin\AppData\Local\Temp\f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2628
    • C:\Users\Admin\AppData\Local\Temp\f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018.exe
      "C:\Users\Admin\AppData\Local\Temp\f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4796
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f8a08129-9b95-4cb5-926f-9c224ffbe3c9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4536
      • C:\Users\Admin\AppData\Local\Temp\f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018.exe
        "C:\Users\Admin\AppData\Local\Temp\f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4308
        • C:\Users\Admin\AppData\Local\Temp\f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018.exe
          "C:\Users\Admin\AppData\Local\Temp\f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1656
          • C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build2.exe
            "C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3188
            • C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build2.exe
              "C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build2.exe"
              6⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4272
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4500
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:624
          • C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build3.exe
            "C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2952
            • 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"
              6⤵
              • Creates scheduled task(s)
              PID:1668

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\ProgramData\mozglue.dll

          Filesize

          593KB

          MD5

          c8fd9be83bc728cc04beffafc2907fe9

          SHA1

          95ab9f701e0024cedfbd312bcfe4e726744c4f2e

          SHA256

          ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

          SHA512

          fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

        • C:\ProgramData\nss3.dll

          Filesize

          2.0MB

          MD5

          1cc453cdf74f31e4d913ff9c10acdde2

          SHA1

          6e85eae544d6e965f15fa5c39700fa7202f3aafe

          SHA256

          ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

          SHA512

          dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

          Filesize

          2KB

          MD5

          84770e5e2da7dbc35f74f1301910fea1

          SHA1

          bd6156f63c93c2bc668dbd796d27474700cbff84

          SHA256

          97a616430f4f8b8a76004f3ffab182f6a01870267c53387960f71f56c3dae1c5

          SHA512

          6241fec66ad5219fa31ad47fdd93dea2ef079cfd600d3ec1ca48fe64d028d76a82984113a5052b74de8d678d183e2bafb965f3c6111f3cdf139239b07dfee941

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

          Filesize

          1KB

          MD5

          46695bc8561a32e1833a6d99a77181a0

          SHA1

          b3c30e212f13fe612567d1a0d590ea400225bde2

          SHA256

          8acf929c15a9d787e72809586a1c01d53cd344207ed8f5b5d2f325f4a25f708e

          SHA512

          59a20f6594e628fb465ca887c4987656757d6b479c9fc72995c1bbe4c7ab89a8e60969aa68d7472b8a06bbfa99c01fdd0e87608fef95133463034bc21744e304

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

          Filesize

          488B

          MD5

          3108018de4e436cb43c489ee9ebd4592

          SHA1

          7c364e9e46c177d62d434adcaaf0ec924089b7bf

          SHA256

          ecf678e70ee4db3556deb54ae820c2c66f6886358d9d8b2bdc6dc1306021bcc8

          SHA512

          c7ed230b434e5626fa8316b30a3e66b4c5845e0a87caeaca4959038f2a60148e3fa6181a359ea240c6c4b20fd2a5481e84d1db7d3edd238b05c4d32aa42ab312

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

          Filesize

          482B

          MD5

          c225cdcfc6062670f2fcde7ebfaa44e6

          SHA1

          b6df6fd51b707d20f34e8b25a1fcab52c6b30e21

          SHA256

          0ec9938595b763cf9091b8339a93c2928060621af437c8e11845ff0a8d03d6d3

          SHA512

          afb49cb0e325698bb8e40e92b571e47b247f29665e51207b49d5062737a2020105df47089ecb3b029f6c23991750c0678c4d16d47244afb29763e343f304fa52

        • C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build2.exe

          Filesize

          299KB

          MD5

          6b343cd7dea3ae28d0819bc55a2f86fe

          SHA1

          cedd49849a5dd678d0a55da607e9b28a9680073c

          SHA256

          4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49

          SHA512

          7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48

        • C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build2.exe

          Filesize

          299KB

          MD5

          6b343cd7dea3ae28d0819bc55a2f86fe

          SHA1

          cedd49849a5dd678d0a55da607e9b28a9680073c

          SHA256

          4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49

          SHA512

          7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48

        • C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build2.exe

          Filesize

          299KB

          MD5

          6b343cd7dea3ae28d0819bc55a2f86fe

          SHA1

          cedd49849a5dd678d0a55da607e9b28a9680073c

          SHA256

          4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49

          SHA512

          7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48

        • C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build2.exe

          Filesize

          299KB

          MD5

          6b343cd7dea3ae28d0819bc55a2f86fe

          SHA1

          cedd49849a5dd678d0a55da607e9b28a9680073c

          SHA256

          4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49

          SHA512

          7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48

        • C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\def4457c-9c98-44fe-94e9-14482b71fb3d\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\f8a08129-9b95-4cb5-926f-9c224ffbe3c9\f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018.exe

          Filesize

          820KB

          MD5

          505fa0d5022e160fe078352061eba6de

          SHA1

          f0f8f84965c3f5b01133557beae2132855c4d20e

          SHA256

          f7c2d7fc794c43df9796b8adf8983de1c6f4c1182ff78a815cc620cd2b2c4018

          SHA512

          778532e64b5e8122ae8890ad08c381575540b44ba567837964886a9679c5729b2659fd6889fdb139e4d59f848216dc696f8cf1496b88bf8573f34ca733c94de6

        • memory/1656-166-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-151-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-163-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-165-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-276-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-158-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-153-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-159-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-192-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-137-0x0000000002680000-0x000000000279B000-memory.dmp

          Filesize

          1.1MB

        • memory/3188-182-0x00000000020E0000-0x0000000002137000-memory.dmp

          Filesize

          348KB

        • memory/4272-274-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4272-181-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4272-183-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4272-277-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4272-180-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4272-275-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4272-205-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/4272-178-0x0000000000400000-0x000000000046C000-memory.dmp

          Filesize

          432KB

        • memory/4796-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4796-135-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4796-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4796-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4796-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB