Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2023, 12:04

General

  • Target

    03543999.exe

  • Size

    773KB

  • MD5

    0a23310ed03ca85389e5738e00490bd5

  • SHA1

    159677590ed0a137529be4d3df42fe961d640808

  • SHA256

    7dc3815a0db7fc813d9927f7a938cdb506d9c828505714d4a2dd2ab4686a50f9

  • SHA512

    d0b58f7bd4c4540d14e84f7751e03810ea884bee5a184ac47eeac896a2a8f0b0d273bfcf1d7fa65637f083e347b6f5b467aec3f994e2668c4504b5216e666d81

  • SSDEEP

    12288:xek1V/Go1Ur2v6qwiqZuvAf6tzSs9gUwk7DZ3fTGqYqh0OCfTxPIxou4DueX:xP/uFr2lwFmy65SclwGvTGqYSSrcquG

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .weon

  • offline_id

    D4KWjM5DY4jRN5T36xETsvDrARq2cCeStxvviHt1

  • payload_url

    http://colisumy.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-3q8YguI9qh 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: 0721JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

4.1

Botnet

77a63e71a10ee1d81a28b5c866b75922

C2

https://steamcommunity.com/profiles/76561199510444991

https://t.me/task4manager

Attributes
  • profile_id_v2

    77a63e71a10ee1d81a28b5c866b75922

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.34

Signatures

  • Detected Djvu ransomware 15 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 2 IoCs

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

  • Executes dropped EXE 4 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).

  • 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\03543999.exe
    "C:\Users\Admin\AppData\Local\Temp\03543999.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4804
    • C:\Users\Admin\AppData\Local\Temp\03543999.exe
      "C:\Users\Admin\AppData\Local\Temp\03543999.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5080
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\73d22416-bcb6-48b8-9800-9d94633bc63b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3824
      • C:\Users\Admin\AppData\Local\Temp\03543999.exe
        "C:\Users\Admin\AppData\Local\Temp\03543999.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3012
        • C:\Users\Admin\AppData\Local\Temp\03543999.exe
          "C:\Users\Admin\AppData\Local\Temp\03543999.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:348
          • C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe
            "C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:916
            • C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe
              "C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:3336
          • C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build3.exe
            "C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4404
            • 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:548
  • 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 WriteProcessMemory
    PID:5068
    • 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"
      2⤵
      • Creates scheduled task(s)
      PID:4884

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

          f66e484f76180fb19546aa9d57accba2

          SHA1

          0ced1b9c30ea054dd83b49f1edfef55f5b5183c0

          SHA256

          f9cdbac7b0628e7d44d159e621c03709ed0d0e1ee5555215f1b6a15c1571d940

          SHA512

          fa38f3d270492548fda297e496bfd79c4bf0a67f73dc712def24a495999c7923add1ad55fbb34925d9535e679d78491f35ffc794ea7fd1d88ff8529b739dbe33

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

          Filesize

          1KB

          MD5

          0de5553e9827815659002db71daadba3

          SHA1

          073c647323b236fec254bc8761ebc838bb636486

          SHA256

          e7ee0d4fb41f5f483e55f53e97817ccb66bc54031b658094ef4b1b1ef9bd00ad

          SHA512

          6de850f9a1f2dbdb77da273b651617639d3e33ad1653bc3464ef695b1bae4e6c16e0fc3891016c40b854981ba0b3005c3cf32406d410900b39fb4c565a8109da

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

          Filesize

          488B

          MD5

          5e283c86d9c7b7164c258cea220214ef

          SHA1

          8679776c131eefcace534c294d98b3d346feb448

          SHA256

          a186003ded057015f83f89b97d5c2f377b36176e3ad2caa523bd08238825daea

          SHA512

          6fe9499302e077652d09d187b72b6bf69403093595f9fb6dccca3740134430162d5ec0e51132e71491706fbaf99e580d8b2e6f60452fca3ff45e3f430c45f823

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

          Filesize

          482B

          MD5

          9030969ca7651567d4213df41dff2089

          SHA1

          5b0e7cd1914817cec5a996665879fb8813d15f7b

          SHA256

          da18d533ef7253279f22f8f3b89cb94ef8cc9467cc4406761c4bf66c9cb48ae6

          SHA512

          2485563dee1970ecc58fadfef14a27e5f16a13757f66ff0416ea4075ab198f4494faf44f7dd6a5ea88ad38b4976d8f9045abc468889a883f00678ff62af029ee

        • C:\Users\Admin\AppData\Local\73d22416-bcb6-48b8-9800-9d94633bc63b\03543999.exe

          Filesize

          773KB

          MD5

          0a23310ed03ca85389e5738e00490bd5

          SHA1

          159677590ed0a137529be4d3df42fe961d640808

          SHA256

          7dc3815a0db7fc813d9927f7a938cdb506d9c828505714d4a2dd2ab4686a50f9

          SHA512

          d0b58f7bd4c4540d14e84f7751e03810ea884bee5a184ac47eeac896a2a8f0b0d273bfcf1d7fa65637f083e347b6f5b467aec3f994e2668c4504b5216e666d81

        • C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe

          Filesize

          437KB

          MD5

          04197441a29753c237bc0c285082c0d8

          SHA1

          463462810a45452d6e91364ae7858263437648dd

          SHA256

          692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77

          SHA512

          91456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05

        • C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

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

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

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

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • memory/348-166-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/348-158-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/348-151-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/348-281-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/348-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/348-188-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/348-165-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/348-163-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/348-159-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/916-196-0x0000000002390000-0x00000000023E6000-memory.dmp

          Filesize

          344KB

        • memory/3336-277-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3336-279-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3336-195-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3336-197-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3336-207-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3336-208-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/3336-276-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/3336-193-0x0000000000400000-0x000000000046A000-memory.dmp

          Filesize

          424KB

        • memory/4804-134-0x0000000002650000-0x000000000276B000-memory.dmp

          Filesize

          1.1MB

        • memory/5080-148-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5080-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5080-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5080-135-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5080-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB