Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/12/2022, 02:35

General

  • Target
    file.exe
  • Size 220KB
  • Sample221221-c21bwsbe45
  • SHA256 37397d4daba951caf74ad3438dfaf81709fbb8e37df7f441ae38c515418ff0c9
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Danabot

    Danabot is a modular banking Trojan that has been linked with other malware.

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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
  • Drops file in Program Files directory 12 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 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 21 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 30 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 18 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 9 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:4388
  • C:\Users\Admin\AppData\Local\Temp\3B9.exe
    C:\Users\Admin\AppData\Local\Temp\3B9.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4196
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Qsedeqtedeooeo.tmp",Wufaiiuuye
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Drops file in Program Files directory
      • Checks processor information in registry
      • Suspicious use of WriteProcessMemory
      PID:4456
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 14124
        3⤵
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        PID:1796
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4196 -s 528
      2⤵
      • Program crash
      PID:4340
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4196 -ip 4196
    1⤵
      PID:4540
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:1008
      • C:\Windows\SysWOW64\svchost.exe
        C:\Windows\SysWOW64\svchost.exe -k LocalService
        1⤵
          PID:1936
          • C:\Windows\SysWOW64\rundll32.exe
            "C:\Windows\system32\rundll32.exe" "c:\program files (x86)\windowspowershell\modules\back-arrow-default.dll",XCU3aFZB
            2⤵
              PID:4620

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                back-arrow-default.dll

                • Path C:\Program Files (x86)\WindowsPowerShell\Modules\back-arrow-default.dll
                • Size 797KB
                • SHA256 6d886a5386770f3c33039943dd20817f03362a755419dbc09aa0c3c10767aec1
                • MD5 SHA1 SHA512 SSDEEP

                back-arrow-default.dll

                • Path C:\Program Files (x86)\WindowsPowerShell\Modules\back-arrow-default.dll
                • Size 797KB
                • SHA256 6d886a5386770f3c33039943dd20817f03362a755419dbc09aa0c3c10767aec1
                • MD5 SHA1 SHA512 SSDEEP

                EventStore.db

                • Path C:\ProgramData\{DFE614B1-1B05-F404-C372-1D93E0034A80}\EventStore.db
                • Size 32KB
                • SHA256 0580713efb76985a3b2157d6f0b08665f8084243caad401a1faf53900564f935
                • MD5 SHA1 SHA512 SSDEEP

                Fwroes.tmp

                • Path C:\ProgramData\{DFE614B1-1B05-F404-C372-1D93E0034A80}\Fwroes.tmp
                • Size 2.3MB
                • SHA256 e347fda5fe266ffc80eb6a8b0f42a8d760e24a9163b68268fea075bdff84238d
                • MD5 SHA1 SHA512 SSDEEP

                Microsoft.DesktopAppInstaller_1.0.30251.0_neutral_split.scale-100_8wekyb3d8bbwe.xml

                • Path C:\ProgramData\{DFE614B1-1B05-F404-C372-1D93E0034A80}\Microsoft.DesktopAppInstaller_1.0.30251.0_neutral_split.scale-100_8wekyb3d8bbwe.xml
                • Size 843B
                • SHA256 dae20c31fd2cd68389b40f99cb7791c8d79d8d8aca2c417d90713ad6c926471f
                • MD5 SHA1 SHA512

                print_queue.ico

                • Path C:\ProgramData\{DFE614B1-1B05-F404-C372-1D93E0034A80}\print_queue.ico
                • Size 55KB
                • SHA256 4858a310c97817f76fd6430067ac3c0b54dc030f7547eb9fbdb082545e8cc261
                • MD5 SHA1 SHA512 SSDEEP

                scan_.ico

                • Path C:\ProgramData\{DFE614B1-1B05-F404-C372-1D93E0034A80}\scan_.ico
                • Size 59KB
                • SHA256 d3ba9eecc5e87b384242385078846cff82051194887ce2d7343bb7b60e7a26d7
                • MD5 SHA1 SHA512 SSDEEP

                setup.ini

                • Path C:\ProgramData\{DFE614B1-1B05-F404-C372-1D93E0034A80}\setup.ini
                • Size 214B
                • SHA256 00b5526d5cffb22eb22eb663fd3863c3f287c5bfc951f1d45cdd0cf0b25c2301
                • MD5 SHA1 SHA512

                3B9.exe

                • Path C:\Users\Admin\AppData\Local\Temp\3B9.exe
                • Size 1.1MB
                • SHA256 f657d6f8f072dcf10f48e03b3b813cb9ab9c4b975dec12e9db8da868d3e50ab9
                • MD5 SHA1 SHA512 SSDEEP

                3B9.exe

                • Path C:\Users\Admin\AppData\Local\Temp\3B9.exe
                • Size 1.1MB
                • SHA256 f657d6f8f072dcf10f48e03b3b813cb9ab9c4b975dec12e9db8da868d3e50ab9
                • MD5 SHA1 SHA512 SSDEEP

                Qsedeqtedeooeo.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\Qsedeqtedeooeo.tmp
                • Size 797KB
                • SHA256 9931503a3ab908d2840dae6a7cb77a5abc5e77cc67af405d1329b7dfc3fe800b
                • MD5 SHA1 SHA512 SSDEEP

                Qsedeqtedeooeo.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\Qsedeqtedeooeo.tmp
                • Size 797KB
                • SHA256 9931503a3ab908d2840dae6a7cb77a5abc5e77cc67af405d1329b7dfc3fe800b
                • MD5 SHA1 SHA512 SSDEEP

                back-arrow-default.dll

                • Path \??\c:\program files (x86)\windowspowershell\modules\back-arrow-default.dll
                • Size 797KB
                • SHA256 6d886a5386770f3c33039943dd20817f03362a755419dbc09aa0c3c10767aec1
                • MD5 SHA1 SHA512 SSDEEP

                memory/1796-156-0x00000276764C0000-0x0000027676600000-memory.dmp

                memory/1796-157-0x00000276764C0000-0x0000027676600000-memory.dmp

                memory/1796-159-0x0000000000740000-0x0000000000959000-memory.dmp

                memory/1796-160-0x0000027674AF0000-0x0000027674D1A000-memory.dmp

                memory/1936-165-0x0000000003530000-0x0000000003C55000-memory.dmp

                memory/4196-146-0x0000000000400000-0x0000000000540000-memory.dmp

                memory/4196-142-0x0000000000400000-0x0000000000540000-memory.dmp

                memory/4196-141-0x0000000002300000-0x0000000002430000-memory.dmp

                memory/4196-140-0x0000000000865000-0x0000000000954000-memory.dmp

                memory/4388-135-0x0000000000400000-0x0000000000461000-memory.dmp

                memory/4388-134-0x00000000001F0000-0x00000000001F9000-memory.dmp

                memory/4388-133-0x0000000000470000-0x0000000000570000-memory.dmp

                memory/4388-136-0x0000000000400000-0x0000000000461000-memory.dmp

                memory/4456-161-0x00000000061D0000-0x00000000068F5000-memory.dmp

                memory/4456-158-0x0000000004F99000-0x0000000004F9B000-memory.dmp

                memory/4456-154-0x0000000004F20000-0x0000000005060000-memory.dmp

                memory/4456-153-0x0000000004F20000-0x0000000005060000-memory.dmp

                memory/4456-152-0x0000000004F20000-0x0000000005060000-memory.dmp

                memory/4456-151-0x0000000004F20000-0x0000000005060000-memory.dmp

                memory/4456-150-0x0000000004F20000-0x0000000005060000-memory.dmp

                memory/4456-149-0x0000000004F20000-0x0000000005060000-memory.dmp

                memory/4456-148-0x00000000061D0000-0x00000000068F5000-memory.dmp

                memory/4456-147-0x00000000061D0000-0x00000000068F5000-memory.dmp

                memory/4620-173-0x0000000003FE0000-0x0000000004705000-memory.dmp