Analysis

  • max time kernel
    89s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/09/2022, 23:37

General

  • Target

    8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431.exe

  • Size

    718KB

  • MD5

    941ac53056020e35c2aa4d4132e08f1c

  • SHA1

    51fc1cdca7488be80959e84afce81175b0ba8fdb

  • SHA256

    8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431

  • SHA512

    0631694e09d9a7da3abb12427350eb59abd85a6da5554fe04438e8a35297da4f6a9ee5a0b5c7cc2c72713f0463e0d47703e9612adf5f8d333883ad712d322274

  • SSDEEP

    12288:y1+riSs4znXjEFz/0iUTXFBOYO67apmVOeuIShMOcg2j+doQRYYbACV:984DYFzcj/UpH7qes+R7

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .ofww

  • 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: 0569Jhyjd

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\8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431.exe
    "C:\Users\Admin\AppData\Local\Temp\8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5072
    • C:\Users\Admin\AppData\Local\Temp\8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431.exe
      "C:\Users\Admin\AppData\Local\Temp\8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1540
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\45640906-be0e-4875-8e21-503dd39e805c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3668
      • C:\Users\Admin\AppData\Local\Temp\8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431.exe
        "C:\Users\Admin\AppData\Local\Temp\8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4804
        • C:\Users\Admin\AppData\Local\Temp\8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431.exe
          "C:\Users\Admin\AppData\Local\Temp\8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1396
          • C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\build2.exe
            "C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4764
            • C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\build2.exe
              "C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\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:4012
              • 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\fc56bc85-e451-4fa7-880b-6af71c14d464\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3604
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3068
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4800
          • C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\build3.exe
            "C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1928
            • 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:2492
  • 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:1796
    • 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:3796

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

    32958182234a80a5b2589418864f6117

    SHA1

    598276140fd27d8931dbe02625e3378ad9085b8d

    SHA256

    a6f4c0928ecef1052acb557bf148d4d06206afaa0d334d30ef676d8b4b89fdb2

    SHA512

    04157e1f291fb8e11e8134fa321d6473ff7ed55c7848170ac9c6db4dd9e42d8303c40746ce56f4112f26c5ea730703ad00fa52fdf57377c81221473210e49dfa

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

    Filesize

    1KB

    MD5

    0d870ca424457579d4bd345ac1ec6c3c

    SHA1

    fc3d8924e13b4fc5eca7cabd4967eea3d4db1690

    SHA256

    cf9df8d62ec78ca20a50633047af6c913dc2d10f15823795e8d86042c7b05ed0

    SHA512

    a1e731ae03b1a2259f8e1afc86058aabb3b8ce3b0141f08ea18b6c7003c55aeb135d40bba38ebf1f76174eb1ad758fbec10841dee1ed704fb0285e36b2f7d66b

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

    Filesize

    488B

    MD5

    a41d982d4cd97d190a0d7700d87f01ce

    SHA1

    e12db7ed43bb7582d2a5e61c349419f1db617081

    SHA256

    2587e22e93f22dd40183bb36fa9ea6bcde5aceab78a4474be7a75d7372046156

    SHA512

    571a999208a5ff3d82bef08e54ff86423fdfe6d91d72b6a70c615482516d8c542eb50d1c48116c69538569b3cc30d1c123740b0f1bbbb14a13cf03fa9ff17836

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

    Filesize

    482B

    MD5

    7a712c48f897ecf99f0a518c9c927c63

    SHA1

    24cf390b78d3ceec43177f2f01d55a11974fdcfd

    SHA256

    670a0e846076936e6ccec75194ce328613065936e77d8bccd64d009ab4a9f895

    SHA512

    52e8ae879b5a576ce705ddc5a221be9cb80cc3294d7d401bc6c0f85a3d07f05a7c50be0852c2204bf229f4a5d987ffea925bd4556a9f93e7cd5d51c583908208

  • C:\Users\Admin\AppData\Local\45640906-be0e-4875-8e21-503dd39e805c\8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431.exe

    Filesize

    718KB

    MD5

    941ac53056020e35c2aa4d4132e08f1c

    SHA1

    51fc1cdca7488be80959e84afce81175b0ba8fdb

    SHA256

    8dd7727715f46212dae4618055c2c3a35bb67be0d8de461408dc00822837d431

    SHA512

    0631694e09d9a7da3abb12427350eb59abd85a6da5554fe04438e8a35297da4f6a9ee5a0b5c7cc2c72713f0463e0d47703e9612adf5f8d333883ad712d322274

  • C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\fc56bc85-e451-4fa7-880b-6af71c14d464\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/1396-188-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1396-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1396-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1396-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1540-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1540-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1540-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1540-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1540-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4012-163-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/4012-190-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/4012-167-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/4012-168-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/4012-164-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/4012-161-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/4764-165-0x0000000000778000-0x00000000007A1000-memory.dmp

    Filesize

    164KB

  • memory/4764-166-0x0000000000710000-0x0000000000757000-memory.dmp

    Filesize

    284KB

  • memory/4804-146-0x00000000022FB000-0x000000000238C000-memory.dmp

    Filesize

    580KB

  • memory/5072-132-0x000000000220B000-0x000000000229C000-memory.dmp

    Filesize

    580KB

  • memory/5072-133-0x00000000022E0000-0x00000000023FB000-memory.dmp

    Filesize

    1.1MB