Analysis

  • max time kernel
    213s
  • max time network
    252s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2022 22:54

General

  • Target

    875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe

  • Size

    703KB

  • MD5

    9f86d39cef8f2d55ee153628c599f125

  • SHA1

    ffcca079744b576dec190e17f8a96f6283875729

  • SHA256

    875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9

  • SHA512

    204d27e878e9a7509b4f40ab55fd6bca1fbe989f9b85a21429008f48cf57c8c1730387667e5affaf3a48c25db69c3f0aabf5d9d4f1d963e39343cfb1cf884b72

  • SSDEEP

    12288:qMn69uipdd3heOMUL41WlMemFG0gR2jBjR8LOX6mtVjlJDOzoUOvD6uRrb:baXpteniUEVLOKaVpxOzo9b6

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .uyro

  • offline_id

    HtkmULXEgJoZa495hFUJlvKCD0OwnxklbkoITjt1

  • payload_url

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

    http://fresherlights.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-5UcwRdS3ED 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: 0609djfsieE

rsa_pubkey.plain

Extracted

Family

vidar

Version

56

Botnet

517

C2

https://t.me/asifrazatg

https://steamcommunity.com/profiles/76561199439929669

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 9 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 3 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
    "C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3420
    • C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
      "C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1604
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\46c1b46b-5647-4f7e-9f55-dec02a9aa7f4" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4880
      • C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
        "C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3236
        • C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
          "C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4476
          • C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe
            "C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1336
            • C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe
              "C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:2264
          • C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build3.exe
            "C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1864
            • 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:4396

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\46c1b46b-5647-4f7e-9f55-dec02a9aa7f4\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe

    Filesize

    703KB

    MD5

    9f86d39cef8f2d55ee153628c599f125

    SHA1

    ffcca079744b576dec190e17f8a96f6283875729

    SHA256

    875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9

    SHA512

    204d27e878e9a7509b4f40ab55fd6bca1fbe989f9b85a21429008f48cf57c8c1730387667e5affaf3a48c25db69c3f0aabf5d9d4f1d963e39343cfb1cf884b72

  • C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe

    Filesize

    258KB

    MD5

    b9212ded69fae1fa1fb5d6db46a9fb76

    SHA1

    58face4245646b1cd379ee49f03a701eab1642be

    SHA256

    7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f

    SHA512

    09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342

  • C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe

    Filesize

    258KB

    MD5

    b9212ded69fae1fa1fb5d6db46a9fb76

    SHA1

    58face4245646b1cd379ee49f03a701eab1642be

    SHA256

    7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f

    SHA512

    09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342

  • C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe

    Filesize

    258KB

    MD5

    b9212ded69fae1fa1fb5d6db46a9fb76

    SHA1

    58face4245646b1cd379ee49f03a701eab1642be

    SHA256

    7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f

    SHA512

    09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342

  • C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • memory/1336-160-0x00000000005D0000-0x000000000061B000-memory.dmp

    Filesize

    300KB

  • memory/1336-151-0x0000000000000000-mapping.dmp

  • memory/1336-157-0x000000000068E000-0x00000000006BA000-memory.dmp

    Filesize

    176KB

  • memory/1604-139-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1604-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1604-143-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1604-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1604-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1604-133-0x0000000000000000-mapping.dmp

  • memory/1864-162-0x0000000000000000-mapping.dmp

  • memory/2264-155-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2264-154-0x0000000000000000-mapping.dmp

  • memory/2264-166-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2264-167-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/2264-159-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2264-158-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2264-161-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/3236-146-0x0000000002145000-0x00000000021D7000-memory.dmp

    Filesize

    584KB

  • memory/3236-142-0x0000000000000000-mapping.dmp

  • memory/3420-132-0x000000000218B000-0x000000000221D000-memory.dmp

    Filesize

    584KB

  • memory/3420-137-0x000000000218B000-0x000000000221D000-memory.dmp

    Filesize

    584KB

  • memory/3420-136-0x0000000002220000-0x000000000233B000-memory.dmp

    Filesize

    1.1MB

  • memory/4396-165-0x0000000000000000-mapping.dmp

  • memory/4476-150-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4476-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4476-148-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4476-144-0x0000000000000000-mapping.dmp

  • memory/4880-140-0x0000000000000000-mapping.dmp