Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    07/01/2024, 04:17

General

  • Target
    toolspub2.exe
  • Size 301KB
  • Sample240107-ewdbaaebek
  • SHA256 2e08721f791305935eb167081cc4dc13b58297d3810ef998026c7a0a59f00f40
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • smokeloader

Botnet
  • up3

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://host-file-host6.com/

  • http://host-host-file8.com/

rc4.i32
rc4.i32

Signatures

  • BetaBot

    Beta Bot is a Trojan that infects computers and disables Antivirus.

  • Modifies firewall policy service 2 TTPs 8 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Disables taskbar notifications via registry modification
  • Disables use of System Restore points 1 TTPs
  • Sets file execution options in registry 2 TTPs 20 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks for any installed AV software in registry 1 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs
  • NSIS installer 3 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 6 IoCs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies Internet Explorer Protected Mode 1 TTPs 4 IoCs
  • Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • NTFS ADS 2 IoCs
  • Runs regedit.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 60 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Deletes itself
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1256
    • C:\Users\Admin\AppData\Local\Temp\toolspub2.exe
      "C:\Users\Admin\AppData\Local\Temp\toolspub2.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1316
    • C:\Users\Admin\AppData\Local\Temp\AFB0.exe
      C:\Users\Admin\AppData\Local\Temp\AFB0.exe
      2⤵
      • Sets file execution options in registry
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2832
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        3⤵
        • Modifies firewall policy service
        • Sets file execution options in registry
        • Checks BIOS information in registry
        • Loads dropped DLL
        • Adds Run key to start application
        • Drops desktop.ini file(s)
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Checks processor information in registry
        • Enumerates system info in registry
        • Modifies Internet Explorer Protected Mode
        • Modifies Internet Explorer Protected Mode Banner
        • Modifies Internet Explorer settings
        • NTFS ADS
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2740
        • C:\Users\Admin\AppData\Local\Temp\u3a5yq9395e_1.exe
          /suac
          4⤵
          • Modifies firewall policy service
          • Sets file execution options in registry
          • Executes dropped EXE
          • Checks for any installed AV software in registry
          • Checks whether UAC is enabled
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Checks processor information in registry
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:584
          • C:\Windows\SysWOW64\regedit.exe
            "C:\Windows\SysWOW64\regedit.exe"
            5⤵
            • Modifies security service
            • Sets file execution options in registry
            • Sets service image path in registry
            • Runs regedit.exe
            • Suspicious use of AdjustPrivilegeToken
            PID:1652
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /CREATE /SC ONLOGON /TN "Windows Update Check - 0x1BB70478" /TR "C:\PROGRA~3\JAVAUP~1\U3A5YQ~1.EXE" /RL HIGHEST
            5⤵
            • Creates scheduled task(s)
            PID:1536
    • C:\Users\Admin\AppData\Local\Temp\BAC8.exe
      C:\Users\Admin\AppData\Local\Temp\BAC8.exe
      2⤵
      • Executes dropped EXE
      PID:2260
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1184

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          AFB0.exe

          • Path C:\Users\Admin\AppData\Local\Temp\AFB0.exe
          • Size 360KB
          • SHA256 6d99cec56614b6b8a23dfa84a50c6bbfde535411c6366ac2bcc20c9f5af62880
          • MD5 SHA1 SHA512 SSDEEP

          BAC8.exe

          • Path C:\Users\Admin\AppData\Local\Temp\BAC8.exe
          • Size 124KB
          • SHA256 68689762a9b5ea72dc885f0aab1d25df7205dca33b6d1e20d8ce4898f3102b39
          • MD5 SHA1 SHA512 SSDEEP

          BAC8.exe

          • Path C:\Users\Admin\AppData\Local\Temp\BAC8.exe
          • Size 20KB
          • SHA256 0f0e73ecefb3b2869ad8bca6c4cf0101e92fa6bfaeb2e1dc4ec4c2e583966e63
          • MD5 SHA1 SHA512 SSDEEP

          u3a5yq9395e_1.exe

          • Path C:\Users\Admin\AppData\Local\Temp\u3a5yq9395e_1.exe
          • Size 3KB
          • SHA256 d1c13c007bcadfc8ac36e027acaf9bbdf458dedc1807839ecd2173b49d6e9bf9
          • MD5 SHA1 SHA512

          u3a5yq9395e_1.exe

          • Path \Users\Admin\AppData\Local\Temp\u3a5yq9395e_1.exe
          • Size 92KB
          • SHA256 5da619cd850f359b0da2c53a53fea1e81f78051234d6840fcb1e8d6eb11c1588
          • MD5 SHA1 SHA512 SSDEEP

          memory/584-86-0x0000000000420000-0x0000000000486000-memory.dmp

          memory/584-85-0x0000000000420000-0x0000000000486000-memory.dmp

          memory/584-111-0x0000000000420000-0x0000000000486000-memory.dmp

          memory/584-87-0x0000000000360000-0x0000000000366000-memory.dmp

          memory/584-112-0x0000000000360000-0x0000000000366000-memory.dmp

          memory/584-89-0x0000000001F00000-0x0000000001F0C000-memory.dmp

          memory/584-91-0x0000000000420000-0x0000000000486000-memory.dmp

          memory/584-110-0x0000000000010000-0x000000000006D000-memory.dmp

          memory/1256-59-0x0000000076DF1000-0x0000000076DF2000-memory.dmp

          memory/1256-4-0x0000000002530000-0x0000000002546000-memory.dmp

          memory/1316-2-0x00000000001B0000-0x00000000001B9000-memory.dmp

          memory/1316-5-0x0000000000400000-0x0000000000452000-memory.dmp

          memory/1316-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

          memory/1316-3-0x0000000000400000-0x0000000000452000-memory.dmp

          memory/1652-113-0x00000000000D0000-0x00000000000DB000-memory.dmp

          memory/1652-105-0x00000000008C0000-0x0000000000926000-memory.dmp

          memory/1652-108-0x00000000000D0000-0x00000000000DB000-memory.dmp

          memory/1652-107-0x00000000008C0000-0x0000000000925000-memory.dmp

          memory/1652-104-0x00000000008C0000-0x0000000000926000-memory.dmp

          memory/2260-54-0x00000000013A0000-0x0000000001936000-memory.dmp

          memory/2260-52-0x00000000013A0000-0x0000000001936000-memory.dmp

          memory/2740-39-0x00000000000D0000-0x0000000000194000-memory.dmp

          memory/2740-70-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-102-0x00000000000D0000-0x0000000000194000-memory.dmp

          memory/2740-38-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-45-0x00000000000D0000-0x0000000000194000-memory.dmp

          memory/2740-55-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-56-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-43-0x0000000000320000-0x000000000032C000-memory.dmp

          memory/2740-40-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-37-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-57-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-31-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-58-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-60-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-61-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-62-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-63-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-64-0x00000000000D0000-0x0000000000194000-memory.dmp

          memory/2740-66-0x0000000076DA0000-0x0000000076F49000-memory.dmp

          memory/2740-65-0x0000000000260000-0x0000000000266000-memory.dmp

          memory/2740-67-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-68-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-69-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-103-0x0000000000260000-0x0000000000266000-memory.dmp

          memory/2740-71-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-72-0x00000000000D0000-0x0000000000194000-memory.dmp

          memory/2740-73-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-82-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-32-0x00000000000D0000-0x0000000000194000-memory.dmp

          memory/2740-33-0x0000000000260000-0x0000000000266000-memory.dmp

          memory/2740-34-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-90-0x00000000000D0000-0x0000000000194000-memory.dmp

          memory/2740-92-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-30-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2740-29-0x0000000076F80000-0x0000000077101000-memory.dmp

          memory/2832-27-0x0000000000550000-0x00000000005B6000-memory.dmp

          memory/2832-36-0x0000000001EE0000-0x0000000001EE1000-memory.dmp

          memory/2832-46-0x0000000000290000-0x0000000000291000-memory.dmp

          memory/2832-42-0x0000000000550000-0x00000000005B6000-memory.dmp

          memory/2832-26-0x0000000001EF0000-0x0000000001EFC000-memory.dmp

          memory/2832-25-0x0000000001E80000-0x0000000001E81000-memory.dmp

          memory/2832-23-0x0000000000550000-0x00000000005B6000-memory.dmp

          memory/2832-22-0x0000000076F90000-0x0000000076F91000-memory.dmp

          memory/2832-21-0x00000000002A0000-0x00000000002AD000-memory.dmp

          memory/2832-20-0x0000000000290000-0x0000000000291000-memory.dmp

          memory/2832-19-0x0000000000550000-0x00000000005B6000-memory.dmp

          memory/2832-18-0x0000000000010000-0x000000000006D000-memory.dmp