Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 02:10

General

  • Target
    45d570affa3319d89121c755e490090c.exe
  • Size 217KB
  • Sample240213-clrd2saf86
  • SHA256 f09dbd237c0b7f9024adefec0d677cd2ddf6fa709021bb7c4efabc2a94fc788c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • smokeloader

Botnet
  • pub1

Extracted

Family
  • smokeloader

Version
  • 2022

C2
  • http://trad-einmyus.com/index.php

  • http://tradein-myus.com/index.php

  • http://trade-inmyus.com/index.php

rc4.i32
rc4.i32

Extracted

Family
  • djvu

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

Attributes
  • extension

    .ldhy

  • offline_id

    pIGzEr0bxHiTz7xnvNidWeqzKkxMfVdHTyCkzwt1

  • payload_url

    http://brusuax.com/dl/build2.exe

    http://habrafa.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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://we.tl/t-hPAqznkJKD Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0849ASdw

rsa_pubkey.plain

Extracted

Family
  • stealc

C2
  • http://216.98.9.109

Attributes
  • url_path

    /76249dc8768da895.php

Extracted

Family
  • lumma

C2
  • https://resergvearyinitiani.shop/api

Signatures

  • Detected Djvu ransomware 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Lumma Stealer

    An infostealer written in C++ first seen in August 2022.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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 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).

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\45d570affa3319d89121c755e490090c.exe
    "C:\Users\Admin\AppData\Local\Temp\45d570affa3319d89121c755e490090c.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:3672
  • C:\Users\Admin\AppData\Local\Temp\9F7C.exe
    C:\Users\Admin\AppData\Local\Temp\9F7C.exe
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:3964
  • C:\Users\Admin\AppData\Local\Temp\C68D.exe
    C:\Users\Admin\AppData\Local\Temp\C68D.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2188
    • C:\Users\Admin\AppData\Local\Temp\C68D.exe
      C:\Users\Admin\AppData\Local\Temp\C68D.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2732
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\5acf9296-64c7-497d-a8be-d770a520bb89" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:784
      • C:\Users\Admin\AppData\Local\Temp\C68D.exe
        "C:\Users\Admin\AppData\Local\Temp\C68D.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2620
        • C:\Users\Admin\AppData\Local\Temp\C68D.exe
          "C:\Users\Admin\AppData\Local\Temp\C68D.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Executes dropped EXE
          PID:2516
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 568
            5⤵
            • Program crash
            PID:3940
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2516 -ip 2516
    1⤵
      PID:1756
    • C:\Users\Admin\AppData\Local\Temp\63B8.exe
      C:\Users\Admin\AppData\Local\Temp\63B8.exe
      1⤵
      • Executes dropped EXE
      PID:3340
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\6918.bat" "
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:320
      • C:\Windows\system32\reg.exe
        reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
        2⤵
          PID:4440
      • C:\Users\Admin\AppData\Local\Temp\6F72.exe
        C:\Users\Admin\AppData\Local\Temp\6F72.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1020
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          2⤵
          • Loads dropped DLL
          • Checks processor information in registry
          PID:2896

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            mozglue.dll

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

            nss3.dll

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

            63B8.exe

            • Path C:\Users\Admin\AppData\Local\Temp\63B8.exe
            • Size 4.0MB
            • SHA256 354bd9dea4c74cdd2c1c4c6e5dc34bba2498f17b3b65b3d3e80cd6e6e256b9f7
            • MD5 SHA1 SHA512 SSDEEP

            63B8.exe

            • Path C:\Users\Admin\AppData\Local\Temp\63B8.exe
            • Size 4.5MB
            • SHA256 3d160bb9e3bb886c7cef5e6adbee3e4b160944e8789ed40e0da174974cf851b0
            • MD5 SHA1 SHA512 SSDEEP

            6918.bat

            • Path C:\Users\Admin\AppData\Local\Temp\6918.bat
            • Size 77B
            • SHA256 d6cceb3c71b80403364bf142f2fa4624ee0be36a49bac25ed45a497cf1ce9c3a
            • MD5 SHA1 SHA512

            6F72.exe

            • Path C:\Users\Admin\AppData\Local\Temp\6F72.exe
            • Size 364KB
            • SHA256 4768efd3769c4525cb2230482561c0fb0df37802d247f0bfea1f713a8561ad61
            • MD5 SHA1 SHA512 SSDEEP

            9F7C.exe

            • Path C:\Users\Admin\AppData\Local\Temp\9F7C.exe
            • Size 217KB
            • SHA256 f09dbd237c0b7f9024adefec0d677cd2ddf6fa709021bb7c4efabc2a94fc788c
            • MD5 SHA1 SHA512 SSDEEP

            C68D.exe

            • Path C:\Users\Admin\AppData\Local\Temp\C68D.exe
            • Size 773KB
            • SHA256 ff6af385c472d0b4fe0b887ce16c703f659d4bdbee1b2ecb61d72ae24e74f56f
            • MD5 SHA1 SHA512 SSDEEP

            memory/1020-83-0x0000000004B20000-0x0000000004B30000-memory.dmp

            memory/1020-88-0x0000000004B20000-0x0000000004B30000-memory.dmp

            memory/1020-81-0x0000000002520000-0x0000000002560000-memory.dmp

            memory/1020-97-0x0000000002680000-0x0000000004680000-memory.dmp

            memory/1020-96-0x0000000074A30000-0x00000000751E0000-memory.dmp

            memory/1020-86-0x0000000004B30000-0x00000000050D4000-memory.dmp

            memory/1020-87-0x0000000005120000-0x000000000515E000-memory.dmp

            memory/1020-84-0x0000000004B20000-0x0000000004B30000-memory.dmp

            memory/1020-85-0x0000000004B20000-0x0000000004B30000-memory.dmp

            memory/1020-82-0x0000000074A30000-0x00000000751E0000-memory.dmp

            memory/1020-168-0x0000000002680000-0x0000000004680000-memory.dmp

            memory/2188-27-0x0000000004900000-0x0000000004998000-memory.dmp

            memory/2188-28-0x00000000049A0000-0x0000000004ABB000-memory.dmp

            memory/2516-50-0x0000000000400000-0x0000000000537000-memory.dmp

            memory/2516-52-0x0000000000400000-0x0000000000537000-memory.dmp

            memory/2516-49-0x0000000000400000-0x0000000000537000-memory.dmp

            memory/2620-46-0x0000000004940000-0x00000000049DA000-memory.dmp

            memory/2640-18-0x0000000004BC0000-0x0000000004BD6000-memory.dmp

            memory/2640-4-0x00000000031D0000-0x00000000031E6000-memory.dmp

            memory/2732-29-0x0000000000400000-0x0000000000537000-memory.dmp

            memory/2732-43-0x0000000000400000-0x0000000000537000-memory.dmp

            memory/2732-31-0x0000000000400000-0x0000000000537000-memory.dmp

            memory/2732-32-0x0000000000400000-0x0000000000537000-memory.dmp

            memory/2732-33-0x0000000000400000-0x0000000000537000-memory.dmp

            memory/2896-167-0x0000000000400000-0x0000000000647000-memory.dmp

            memory/2896-99-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            memory/2896-98-0x0000000000400000-0x0000000000647000-memory.dmp

            memory/2896-94-0x0000000000400000-0x0000000000647000-memory.dmp

            memory/2896-91-0x0000000000400000-0x0000000000647000-memory.dmp

            memory/3340-75-0x0000000000520000-0x000000000134B000-memory.dmp

            memory/3340-68-0x0000000000520000-0x000000000134B000-memory.dmp

            memory/3340-63-0x0000000000520000-0x000000000134B000-memory.dmp

            memory/3340-62-0x00000000014D0000-0x00000000014D1000-memory.dmp

            memory/3340-65-0x0000000002FC0000-0x0000000002FC1000-memory.dmp

            memory/3340-64-0x00000000014E0000-0x00000000014E1000-memory.dmp

            memory/3340-60-0x00000000013B0000-0x00000000013B1000-memory.dmp

            memory/3340-61-0x00000000013C0000-0x00000000013C1000-memory.dmp

            memory/3340-67-0x0000000002FE0000-0x0000000002FE1000-memory.dmp

            memory/3340-66-0x0000000002FD0000-0x0000000002FD1000-memory.dmp

            memory/3672-5-0x0000000000400000-0x0000000002BE4000-memory.dmp

            memory/3672-3-0x0000000000400000-0x0000000002BE4000-memory.dmp

            memory/3672-1-0x0000000002DD0000-0x0000000002ED0000-memory.dmp

            memory/3672-2-0x0000000002D90000-0x0000000002D9B000-memory.dmp

            memory/3964-16-0x0000000002EE0000-0x0000000002FE0000-memory.dmp

            memory/3964-17-0x0000000000400000-0x0000000002BE4000-memory.dmp

            memory/3964-19-0x0000000000400000-0x0000000002BE4000-memory.dmp