Analysis

  • max time kernel
    54s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/09/2022, 05:51

General

  • Target

    file.exe

  • Size

    671KB

  • MD5

    2ded1c94095192fe4a80b936fc23b8ce

  • SHA1

    9c55887b9430de35df58b9f50d85f9f429d83d8a

  • SHA256

    ed09ef7ca783ef12aed593f11e5904b449d2e9744217b1e4abb27a0c2e186eb4

  • SHA512

    ddf0c70a1d30edc78c0e470a54d63e4fcb02bf70f33ccfdb40b09002bcde4ea6ceb4faa18044facd0efbfee301f66846ce46e27a88355246b987e19298de8cd3

  • SSDEEP

    12288:NK1aeB7ndkYYSdFUQ123dtlCrBJuMwGGgcqOZnwwcVQGEeVRnjKQV98w:NKc47nfbrvGHqOZnwwcIeVRj

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/test3/get.php

Attributes
  • extension

    .ofoq

  • offline_id

    xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://winnlinne.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-EWKSsSJiVn 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: 0568Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

54.6

Botnet

517

C2

https://t.me/huobiinside

https://mas.to/@kyriazhs1975

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 10 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 4 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • 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 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:544
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4016
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\9d2287c2-5a26-4ded-b104-e8fea15f54ff" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4844
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4748
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1100
          • C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build2.exe
            "C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3972
            • C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build2.exe
              "C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build2.exe"
              6⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4296
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" \/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3680
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2416
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:812
          • C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build3.exe
            "C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4668
            • 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:880
  • 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:3024
    • 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:3052

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

          3229b6929fc9caec79e3e5ad740250c6

          SHA1

          d677cb89c767b4c4a444fedfa53dd6c8aa1d7d6e

          SHA256

          ece826b5b4484d173ea804773ca9a13c7248d2f6f3c8a7efeea2a9e3691d7628

          SHA512

          79b5ab3c41f03f913c0c947c6b6c66f396af97f7f69b3df72622beb9fddf8c6cc1a4f830d3edbd91ec570ce59531f09db54e51a2694a8b330ded69fd932036d1

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

          Filesize

          1KB

          MD5

          edcd4c783b2b2c906602519bd8f697f4

          SHA1

          fc56fded4065d6960c6507cac4264dfd2b038004

          SHA256

          367e0ac4e24f1d1530de05a6abf81d6b572c0546b5aa134c246fa1514582fd90

          SHA512

          cb23a82c06211121e39ed0dbec5928b1a85aca7c25f2c060d609350e3a94bf82e9159a2a4d5e67295fc29bac22c95d525ea2461a0000d24c6c4cb630520f68d0

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

          Filesize

          488B

          MD5

          6be3ad3a5a905e1c5aff041482379c78

          SHA1

          e3140a56721b4030216c993ff7699fca8b512680

          SHA256

          2579689c0c9ebdb4f4bb67bf47649ccb156993a0efa2dbf16d5494e13855bdf1

          SHA512

          ed6a89fc14925510aa3ee02caf17cd6b2d7f6374a6eb439b2faa3d3dd9459b591ef4e15b239756ff479f7dd21742bbf2a05c1d2095aa9f4faa59d940d405b9ba

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

          Filesize

          482B

          MD5

          0215e989ae3cfca312ebc47bced251e8

          SHA1

          f0cfeae2a23c4d237730d613175fed5b6e0c8768

          SHA256

          f7e13910c34a8ab9100bd582c798d4593372f371814f62b7a57bae3cc1575005

          SHA512

          d945271219fde49ad34ed56a837df18b8c89efcde156b4d8906a9eb8b0a21034e3b9a4bdbd605768318324e0fbf2de45f575e5911e23053ba69b8ac36559bb16

        • C:\Users\Admin\AppData\Local\9d2287c2-5a26-4ded-b104-e8fea15f54ff\file.exe

          Filesize

          671KB

          MD5

          2ded1c94095192fe4a80b936fc23b8ce

          SHA1

          9c55887b9430de35df58b9f50d85f9f429d83d8a

          SHA256

          ed09ef7ca783ef12aed593f11e5904b449d2e9744217b1e4abb27a0c2e186eb4

          SHA512

          ddf0c70a1d30edc78c0e470a54d63e4fcb02bf70f33ccfdb40b09002bcde4ea6ceb4faa18044facd0efbfee301f66846ce46e27a88355246b987e19298de8cd3

        • C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build2.exe

          Filesize

          246KB

          MD5

          4e08ecaa075b90f30327bf200d23130b

          SHA1

          f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

          SHA256

          6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

          SHA512

          e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

        • C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build2.exe

          Filesize

          246KB

          MD5

          4e08ecaa075b90f30327bf200d23130b

          SHA1

          f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

          SHA256

          6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

          SHA512

          e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

        • C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build2.exe

          Filesize

          246KB

          MD5

          4e08ecaa075b90f30327bf200d23130b

          SHA1

          f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

          SHA256

          6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

          SHA512

          e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

        • C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\f1a7d239-fda7-416c-a9b7-83b254165291\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/544-137-0x0000000002410000-0x000000000252B000-memory.dmp

          Filesize

          1.1MB

        • memory/544-135-0x0000000002346000-0x00000000023D7000-memory.dmp

          Filesize

          580KB

        • memory/1100-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1100-191-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1100-145-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1100-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3972-162-0x0000000000710000-0x0000000000757000-memory.dmp

          Filesize

          284KB

        • memory/3972-161-0x0000000000808000-0x0000000000832000-memory.dmp

          Filesize

          168KB

        • memory/4016-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4016-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4016-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4016-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4016-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4296-189-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4296-168-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/4296-159-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4296-157-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4296-163-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4296-160-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4748-146-0x0000000002214000-0x00000000022A5000-memory.dmp

          Filesize

          580KB