Analysis

  • max time kernel
    142s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    07/11/2022, 18:42

General

  • Target
    file.exe
  • Size 682KB
  • Sample221107-xcbmfscda8
  • SHA256 9ea5af00552becdfea2041d047f2b8a1f8eb8922361060707eb0a8e1c0c5a084
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • djvu

C2
  • http://fresherlights.com/test1/get.php

Attributes
  • extension

    .zatp

  • offline_id

    VW11mMMPfxPTr0epvPSw1m6GBzcKFb3H2Lm2nyt1

  • 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-XIH9asXhHQ 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: 0598Jhyjd

rsa_pubkey.plain

Extracted

Family
  • vidar

Version
  • 55.5

Botnet
  • 517

C2
  • https://t.me/tg_turgay

  • https://ioc.exchange/@xiteb15011

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
  • Loads dropped DLL 7 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
  • 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 2 IoCs

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

  • Modifies system certificate store 2 TTPs 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 60 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:1504
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1536
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\88cb9570-ad02-4923-95b7-70ee0e057a7e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1600
      • 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:1204
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1800
          • C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build2.exe
            "C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:692
            • C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build2.exe
              "C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Modifies system certificate store
              PID:1812
          • C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build3.exe
            "C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:828
            • 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:1604
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {B5A5C89A-F90F-4A1B-91DF-EADB009B6982} S-1-5-21-999675638-2867687379-27515722-1000:ORXGKKZC\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:776
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:968
      • 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"
        3⤵
        • Creates scheduled task(s)
        PID:544

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
        • Size 2KB
        • SHA256 653df1e7ee6eb78011d131d41eebad55a6b11e14073ac204587960c404d2300f
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
        • Size 61KB
        • SHA256 40810e31f1b69075c727e6d557f9614d5880112895ff6f4df1767e87ae5640d1
        • MD5 SHA1 SHA512 SSDEEP

        B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
        • Size 1KB
        • SHA256 3185aa19aba785efc822b72e3f2959e07343c1935f8f2b46a4438060763c9111
        • MD5 SHA1 SHA512

        07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
        • Size 488B
        • SHA256 155943396d179cd4451f946dcf690d8e7c2bafcf307ceb88688a2ed5377c50c3
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 342B
        • SHA256 0ac15e225b2bc7d1d6f6375e67458ec1c7d624951b18f4cf8a57b3b577c6472b
        • MD5 SHA1 SHA512

        B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
        • Size 482B
        • SHA256 943838091bd2ba73b439d877943549d5634fbded2238cda61643d2f7f834384c
        • MD5 SHA1 SHA512

        file.exe

        • Path C:\Users\Admin\AppData\Local\88cb9570-ad02-4923-95b7-70ee0e057a7e\file.exe
        • Size 682KB
        • SHA256 9ea5af00552becdfea2041d047f2b8a1f8eb8922361060707eb0a8e1c0c5a084
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build2.exe
        • Size 365KB
        • SHA256 62400492f45492ab6f1d4a4eaf4e7f86164b14470ab3ad3b43f0e31574aa4c57
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build2.exe
        • Size 365KB
        • SHA256 62400492f45492ab6f1d4a4eaf4e7f86164b14470ab3ad3b43f0e31574aa4c57
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build2.exe
        • Size 365KB
        • SHA256 62400492f45492ab6f1d4a4eaf4e7f86164b14470ab3ad3b43f0e31574aa4c57
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build3.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path C:\Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build3.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        mstsca.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        mstsca.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        mozglue.dll

        • Path \ProgramData\mozglue.dll
        • Size 593KB
        • SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
        • MD5 SHA1 SHA512 SSDEEP

        nss3.dll

        • Path \ProgramData\nss3.dll
        • Size 2.0MB
        • SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
        • MD5 SHA1 SHA512 SSDEEP

        sqlite3.dll

        • Path \ProgramData\sqlite3.dll
        • Size 1.1MB
        • SHA256 4841020c8bd06b08fde6e44cbe2e2ab33439e1c8368e936ec5b00dc0584f7260
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path \Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build2.exe
        • Size 365KB
        • SHA256 62400492f45492ab6f1d4a4eaf4e7f86164b14470ab3ad3b43f0e31574aa4c57
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path \Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build2.exe
        • Size 365KB
        • SHA256 62400492f45492ab6f1d4a4eaf4e7f86164b14470ab3ad3b43f0e31574aa4c57
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path \Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build3.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path \Users\Admin\AppData\Local\d8181b4c-b1fb-4299-a26a-fb1398bfca25\build3.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        memory/692-100-0x0000000000220000-0x0000000000268000-memory.dmp

        memory/692-98-0x0000000000A4E000-0x0000000000A78000-memory.dmp

        memory/1204-67-0x0000000000310000-0x00000000003A1000-memory.dmp

        memory/1204-71-0x0000000000310000-0x00000000003A1000-memory.dmp

        memory/1504-54-0x00000000007A0000-0x0000000000831000-memory.dmp

        memory/1504-58-0x00000000007A0000-0x0000000000831000-memory.dmp

        memory/1504-59-0x0000000001F60000-0x000000000207B000-memory.dmp

        memory/1536-61-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1536-66-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1536-60-0x00000000768A1000-0x00000000768A3000-memory.dmp

        memory/1536-62-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1536-55-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1800-103-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1800-74-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1800-73-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/1812-104-0x0000000000400000-0x000000000045C000-memory.dmp

        memory/1812-101-0x0000000000400000-0x000000000045C000-memory.dmp

        memory/1812-99-0x0000000000400000-0x000000000045C000-memory.dmp

        memory/1812-94-0x0000000000400000-0x000000000045C000-memory.dmp