Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/11/2022, 04:28

General

  • Target
    file.exe
  • Size 322KB
  • Sample221102-e3nqlaaaej
  • SHA256 de219eb4ea8aa0886fc938555a58a49644c95f55c1c2d733f7cf41eea3f8d7e6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • 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 40 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 19 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:5040
  • C:\Users\Admin\AppData\Local\Temp\CCBB.exe
    C:\Users\Admin\AppData\Local\Temp\CCBB.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:4344
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\syswow64\rundll32.exe" "C:\Windows\syswow64\shell32.dll",#61
      2⤵
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:4292
  • C:\Users\Admin\AppData\Roaming\vgcisdj
    C:\Users\Admin\AppData\Roaming\vgcisdj
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:1656

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        AdobeSFX.log

        • Path C:\Users\Admin\AppData\Local\Temp\AdobeSFX.log
        • Size 1KB
        • SHA256 ab5bbad92eb5b118a83152c34f7d011cd7ebd55e0774e7649b5bd6084c6bb807
        • MD5 SHA1 SHA512

        CCBB.exe

        • Path C:\Users\Admin\AppData\Local\Temp\CCBB.exe
        • Size 4.9MB
        • SHA256 ebf90b3ad9338b153cd77ba9c1337345c764347fc12e9e14bd9988bc7a3048d0
        • MD5 SHA1 SHA512 SSDEEP

        CCBB.exe

        • Path C:\Users\Admin\AppData\Local\Temp\CCBB.exe
        • Size 4.9MB
        • SHA256 ebf90b3ad9338b153cd77ba9c1337345c764347fc12e9e14bd9988bc7a3048d0
        • MD5 SHA1 SHA512 SSDEEP

        Microsoft .NET Framework 4.7.2 Setup_20220812_191749306.html

        • Path C:\Users\Admin\AppData\Local\Temp\Microsoft .NET Framework 4.7.2 Setup_20220812_191749306.html
        • Size 94KB
        • SHA256 fe6525b8436cfb0df02ae2cd7e7054bd706b3fa6f68ba4ded69308ed0bbfc350
        • MD5 SHA1 SHA512 SSDEEP

        Rpiidpytrto.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Rpiidpytrto.tmp
        • Size 3.5MB
        • SHA256 8c67a70fe070595fda6ec977af7da0085d40df299f04cdd5669156752fee3f31
        • MD5 SHA1 SHA512 SSDEEP

        dd_vcredistMSI50B8.txt

        • Path C:\Users\Admin\AppData\Local\Temp\dd_vcredistMSI50B8.txt
        • Size 426KB
        • SHA256 37c69c02974b85d856e00765ff6b978bc55f03f1254b5f50754d5acd7c32c296
        • MD5 SHA1 SHA512 SSDEEP

        jusched.log

        • Path C:\Users\Admin\AppData\Local\Temp\jusched.log
        • Size 265KB
        • SHA256 31027983935b7afcf422452e2ab35d583aad46a68ba867e0bfaeb2d0ca3268a6
        • MD5 SHA1 SHA512 SSDEEP

        wct1F1D.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\wct1F1D.tmp
        • Size 62KB
        • SHA256 094754a618b102b7ad0800dd4c9c02c882cf2d1e7996ba864f422fa4312427e1
        • MD5 SHA1 SHA512 SSDEEP

        vgcisdj

        • Path C:\Users\Admin\AppData\Roaming\vgcisdj
        • Size 322KB
        • SHA256 de219eb4ea8aa0886fc938555a58a49644c95f55c1c2d733f7cf41eea3f8d7e6
        • MD5 SHA1 SHA512 SSDEEP

        vgcisdj

        • Path C:\Users\Admin\AppData\Roaming\vgcisdj
        • Size 322KB
        • SHA256 de219eb4ea8aa0886fc938555a58a49644c95f55c1c2d733f7cf41eea3f8d7e6
        • MD5 SHA1 SHA512 SSDEEP

        memory/1656-173-0x0000000002F58000-0x0000000002F6D000-memory.dmp

        memory/1656-174-0x0000000000400000-0x0000000002C3E000-memory.dmp

        memory/1656-175-0x0000000000400000-0x0000000002C3E000-memory.dmp

        memory/4292-165-0x00000000028E0000-0x0000000003449000-memory.dmp

        memory/4292-168-0x00000000028E0000-0x0000000003449000-memory.dmp

        memory/4292-166-0x0000000003590000-0x00000000036D0000-memory.dmp

        memory/4292-167-0x0000000003590000-0x00000000036D0000-memory.dmp

        memory/4292-164-0x0000000000A40000-0x000000000148A000-memory.dmp

        memory/4292-157-0x0000000003590000-0x00000000036D0000-memory.dmp

        memory/4292-156-0x0000000003590000-0x00000000036D0000-memory.dmp

        memory/4292-155-0x00000000028E0000-0x0000000003449000-memory.dmp

        memory/4344-153-0x0000000006C80000-0x0000000006DC0000-memory.dmp

        memory/4344-170-0x0000000005F50000-0x0000000006AB9000-memory.dmp

        memory/4344-152-0x0000000006C80000-0x0000000006DC0000-memory.dmp

        memory/4344-151-0x0000000006C80000-0x0000000006DC0000-memory.dmp

        memory/4344-145-0x0000000005F50000-0x0000000006AB9000-memory.dmp

        memory/4344-144-0x0000000005F50000-0x0000000006AB9000-memory.dmp

        memory/4344-143-0x0000000005F50000-0x0000000006AB9000-memory.dmp

        memory/4344-142-0x0000000000400000-0x00000000030D3000-memory.dmp

        memory/4344-141-0x0000000000400000-0x00000000030D3000-memory.dmp

        memory/4344-140-0x00000000052B0000-0x0000000005905000-memory.dmp

        memory/4344-149-0x0000000006C80000-0x0000000006DC0000-memory.dmp

        memory/4344-150-0x0000000006C80000-0x0000000006DC0000-memory.dmp

        memory/4344-148-0x0000000006C80000-0x0000000006DC0000-memory.dmp

        memory/4344-146-0x0000000006C80000-0x0000000006DC0000-memory.dmp

        memory/4344-169-0x0000000000400000-0x00000000030D3000-memory.dmp

        memory/4344-147-0x0000000006C80000-0x0000000006DC0000-memory.dmp

        memory/4344-139-0x0000000004DFB000-0x00000000052A4000-memory.dmp

        memory/5040-132-0x0000000002DE9000-0x0000000002DFF000-memory.dmp

        memory/5040-135-0x0000000000400000-0x0000000002C3E000-memory.dmp

        memory/5040-134-0x0000000000400000-0x0000000002C3E000-memory.dmp

        memory/5040-133-0x0000000002D90000-0x0000000002D99000-memory.dmp