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Analysis

  • max time kernel
    66s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/10/2022, 22:58

General

  • Target

    3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985.exe

  • Size

    723KB

  • MD5

    f0c62bf2250e0fcf06e9bca6d7a254fc

  • SHA1

    a491dc0d11ec498a6f31d486ecf9befec1b6310d

  • SHA256

    3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985

  • SHA512

    f4db2cc79cb829d36a7cec72ec9a3e85368ad5d16749922c23b1df155369aca3db44cd5b409a21f9103e9fb035ca82727cedf1a16dc43580c1b9862806165fdb

  • SSDEEP

    12288:hCoMRYBcDMQeDk+f7s/21zEAzmLUy+Qo/0hsbSzR82jZtBj2bKs2pZiLAuDmrpt7:hCJ1DMjf7VA1U1AzR8GVSbKs2pZiLAAh

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .tuis

  • offline_id

    Uz66zEbmA32arcxwT81zZhkb23026oHz5iSp8qt1

  • 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-o7UXxOstmw 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: 0582Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

55

Botnet

517

C2

https://t.me/truewallets

https://mas.to/@zara99

http://116.203.10.3:80

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 55 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985.exe
    "C:\Users\Admin\AppData\Local\Temp\3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:864
    • C:\Users\Admin\AppData\Local\Temp\3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985.exe
      "C:\Users\Admin\AppData\Local\Temp\3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2916
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\94caa876-01e4-4881-8a7b-bee9ec824498" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:376
      • C:\Users\Admin\AppData\Local\Temp\3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985.exe
        "C:\Users\Admin\AppData\Local\Temp\3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1016
        • C:\Users\Admin\AppData\Local\Temp\3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985.exe
          "C:\Users\Admin\AppData\Local\Temp\3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4980
          • C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\build2.exe
            "C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:856
            • C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\build2.exe
              "C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\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:3932
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" C/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:372
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4124
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:3564
          • C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\build3.exe
            "C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1012
            • 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:3308
  • 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:4356
    • 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:992

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

    006c98bc42ac1d15f0ec70e3488783c5

    SHA1

    a8c8302826468c903b511e206d6d058e2c3acdaa

    SHA256

    e24883740fbed2781e4df4e5387cd95c3345ec9944edeeb36babd2c10135fa00

    SHA512

    e0caea17f99a18483e0195c5311942c195ef42532f1868bfb5c64b3f6cb72cc0fc58414176a9bfc66452e11d17c2058eafb483a41890f502ec76dc3a6807f2f4

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

    Filesize

    1KB

    MD5

    97ab7ffd65186e85f453dc7c02637528

    SHA1

    f22312a6a44613be85c0370878456a965f869a40

    SHA256

    630df8e970cc3b1ad508db713dd8be52e0ac7a5826f3f264a266232f9a1c23ee

    SHA512

    37d90c98e72ad55b2cbb938541c81bac1aa9d2b8a7e19f0fbfaa365b49e7bef2d3199f03e46aa9fbf3055f3701d21860820c451065f7e425d39bf86ca606bfb0

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

    Filesize

    488B

    MD5

    6fbca66777cefb95fcc73e520cd55a8e

    SHA1

    3751183d7dfb17d811df9487e912cd33034f68be

    SHA256

    7a1bfafef61cbb3da121d77bc8d56f1ec41d6a927104bb554fe572176eea9b4d

    SHA512

    19a437124675bf3c1ce1251c3ed79d9e1c778f5bf9e31a7baab0917b46153205039093cf35f24c50f97c78561d10e24d2deac78be5dc83ed3661856273ca6262

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

    Filesize

    482B

    MD5

    32c6b14fda933cb8bcefabecf7aa7a01

    SHA1

    76c03686c4df27723a2e2a94f200ed717d01ad8c

    SHA256

    d1d640236d4b546c79ad27a17b42154ad71e5cb96a24acb07448528448c1da41

    SHA512

    84aff06c4ba8f950cd18229517ce9764df73d4c08d7f10a43bb8d6b76fe4a9ee7dd84dc2263971475dedc9a3fcc3a21a608dcb1eff290611a6ec2b737f56d165

  • C:\Users\Admin\AppData\Local\94caa876-01e4-4881-8a7b-bee9ec824498\3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985.exe

    Filesize

    723KB

    MD5

    f0c62bf2250e0fcf06e9bca6d7a254fc

    SHA1

    a491dc0d11ec498a6f31d486ecf9befec1b6310d

    SHA256

    3658bfa25d4a8c21d23c43f07d92223a989b8433024912c82c523a6f89cea985

    SHA512

    f4db2cc79cb829d36a7cec72ec9a3e85368ad5d16749922c23b1df155369aca3db44cd5b409a21f9103e9fb035ca82727cedf1a16dc43580c1b9862806165fdb

  • C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\build2.exe

    Filesize

    321KB

    MD5

    5fd8c38657bb9393bb4736c880675223

    SHA1

    f3a03b2e75cef22262f6677e3832b6ad9327905c

    SHA256

    2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6

    SHA512

    43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe

  • C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\build2.exe

    Filesize

    321KB

    MD5

    5fd8c38657bb9393bb4736c880675223

    SHA1

    f3a03b2e75cef22262f6677e3832b6ad9327905c

    SHA256

    2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6

    SHA512

    43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe

  • C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\build2.exe

    Filesize

    321KB

    MD5

    5fd8c38657bb9393bb4736c880675223

    SHA1

    f3a03b2e75cef22262f6677e3832b6ad9327905c

    SHA256

    2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6

    SHA512

    43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe

  • C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\ec49a728-b566-42c9-8fcc-add85fb159aa\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/856-162-0x0000000000730000-0x000000000077F000-memory.dmp

    Filesize

    316KB

  • memory/856-160-0x000000000064D000-0x0000000000679000-memory.dmp

    Filesize

    176KB

  • memory/864-132-0x00000000020BF000-0x0000000002151000-memory.dmp

    Filesize

    584KB

  • memory/864-133-0x0000000002260000-0x000000000237B000-memory.dmp

    Filesize

    1.1MB

  • memory/1016-146-0x00000000020D4000-0x0000000002166000-memory.dmp

    Filesize

    584KB

  • memory/2916-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2916-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2916-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2916-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2916-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3932-167-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/3932-168-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/3932-161-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/3932-157-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/3932-194-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/4980-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4980-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4980-191-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4980-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB