Analysis

  • max time kernel
    162s
  • max time network
    184s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2022 03:45

General

  • Target

    f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe

  • Size

    704KB

  • MD5

    cf71bc7cbcd455475e601421ae0a09f6

  • SHA1

    7de15815b0885340bb5a45887fb98a8b225b1633

  • SHA256

    f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95

  • SHA512

    83422baa07f1c00ed240b8f946a1f3ef51b6be491dd8aebd4216de3efd306a6cd849c0c36bd3c8c0e7fa883e96bce01c9f9d0c32738bcf0c78ec91b517372ff8

  • SSDEEP

    12288:NMR5Yk6c6FfjdSH3w1ZSoZmRxelzgQ7oV9cAusaC6nPwByvVAcQWYj+aRp6RLy:+mcAjdyAjSo68zfoTVLJ/ydnYj+K

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 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 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 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.

  • 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\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe
    "C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3288
    • C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe
      "C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1148
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\9eba9974-5b95-4fdc-88a3-484078cd628c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4328
      • C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe
        "C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2288
        • C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe
          "C:\Users\Admin\AppData\Local\Temp\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2196
          • C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe
            "C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2616
            • C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe
              "C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:4452
          • C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build3.exe
            "C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4296
            • 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:1580

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    1KB

    MD5

    916c512d221c683beeea9d5cb311b0b0

    SHA1

    bf0db4b1c4566275b629efb095b6ff8857b5748e

    SHA256

    64a36c1637d0a111152002a2c0385b0df9dd81b616b3f2073fbbe3f2975aa4d8

    SHA512

    af32cffea722438e9b17b08062dc2e209edc5417418964ead0b392bd502e1a647a8456b2ee2ea59faf69f93d0c6ea6f15949b6c30924db7da65b91cb18e8dc6c

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

    Filesize

    482B

    MD5

    e815cc92bc850d3c7595172fe43f9e0b

    SHA1

    8a834b79537aad1763379fc3c433158d22c9323b

    SHA256

    ad9687e8531d5a7472ed2f615dbdd36256166040e567081a0a07b15efcf16c62

    SHA512

    7de5723fb554a4989006f4c91bc03b0b131d381e04658ec331b078d4dfb1ccd8f934f47ca470f9e130a5918fa802621a0917ec8e88194bcf76a1290da1e53986

  • C:\Users\Admin\AppData\Local\9eba9974-5b95-4fdc-88a3-484078cd628c\f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95.exe

    Filesize

    704KB

    MD5

    cf71bc7cbcd455475e601421ae0a09f6

    SHA1

    7de15815b0885340bb5a45887fb98a8b225b1633

    SHA256

    f0cc9991ad44aa04727f3da3b5cc13ec343a838fc3d60cdfdb457c6443714d95

    SHA512

    83422baa07f1c00ed240b8f946a1f3ef51b6be491dd8aebd4216de3efd306a6cd849c0c36bd3c8c0e7fa883e96bce01c9f9d0c32738bcf0c78ec91b517372ff8

  • C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe

    Filesize

    258KB

    MD5

    b9212ded69fae1fa1fb5d6db46a9fb76

    SHA1

    58face4245646b1cd379ee49f03a701eab1642be

    SHA256

    7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f

    SHA512

    09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342

  • C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe

    Filesize

    258KB

    MD5

    b9212ded69fae1fa1fb5d6db46a9fb76

    SHA1

    58face4245646b1cd379ee49f03a701eab1642be

    SHA256

    7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f

    SHA512

    09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342

  • C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build2.exe

    Filesize

    258KB

    MD5

    b9212ded69fae1fa1fb5d6db46a9fb76

    SHA1

    58face4245646b1cd379ee49f03a701eab1642be

    SHA256

    7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f

    SHA512

    09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342

  • C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\d00f7f6e-cd23-4782-ab7c-8f3a3b72bfce\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • memory/1148-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1148-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1148-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1148-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1148-132-0x0000000000000000-mapping.dmp

  • memory/1148-133-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1580-167-0x0000000000000000-mapping.dmp

  • memory/2196-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2196-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2196-146-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2196-163-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2196-143-0x0000000000000000-mapping.dmp

  • memory/2288-145-0x0000000002115000-0x00000000021A7000-memory.dmp

    Filesize

    584KB

  • memory/2288-141-0x0000000000000000-mapping.dmp

  • memory/2616-152-0x0000000000000000-mapping.dmp

  • memory/2616-158-0x000000000058E000-0x00000000005BA000-memory.dmp

    Filesize

    176KB

  • memory/2616-161-0x0000000002070000-0x00000000020BB000-memory.dmp

    Filesize

    300KB

  • memory/3288-134-0x000000000223E000-0x00000000022D0000-memory.dmp

    Filesize

    584KB

  • memory/3288-136-0x0000000002390000-0x00000000024AB000-memory.dmp

    Filesize

    1.1MB

  • memory/4296-164-0x0000000000000000-mapping.dmp

  • memory/4328-139-0x0000000000000000-mapping.dmp

  • memory/4452-155-0x0000000000000000-mapping.dmp

  • memory/4452-162-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/4452-160-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/4452-159-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/4452-156-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB