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Analysis
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max time kernel
122s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
16/05/2024, 16:17
Static task
static1
Behavioral task
behavioral1
Sample
PicoPDFEditingSoftware.exe
Resource
win7-20240508-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
PicoPDFEditingSoftware.exe
Resource
win10v2004-20240508-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
PicoPDFEditingSoftware.exe
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Size
1.5MB
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MD5
f6b95936cb7486dd5ca43c63c8ad36c6
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SHA1
a488faf5fa1c773b58988276ee61b0e9aa6dab24
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SHA256
9dc90f1f05edddba503a8df4c41f5b3c664d840d3b9097c4393f3bb939ea65bf
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SHA512
ceaf3738892d4e552fef0833c212c9e500ac026a15834a32ba741e4978158476c70f8e60a796075447b2da99509066fb283b68d27847aa533b2803254d63e85b
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SSDEEP
49152:5YyCar5yHxc9AXOgoLCrkMszdwMOL0fOt79drZ01:qLaERc7ghpsBzOLL79Y
Score
6/10
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\PicoPDFInstall = "C:\\Users\\Admin\\AppData\\Local\\Temp\\PicoPDFEditingSoftware.exe" nchsetup.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 6 IoCs
description ioc Process File created C:\Program Files (x86)\NCH Software\PicoPDF\shellmenub.msix nchsetup.exe File created C:\Program Files (x86)\NCH Software\PicoPDF\picopdfsetup_v6.19.exe nchsetup.exe File created C:\Program Files (x86)\NCH Software\PicoPDF\picopdf.exe nchsetup.exe File opened for modification C:\Program Files (x86)\NCH Software\PicoPDF\picopdf.exe nchsetup.exe File created C:\Program Files (x86)\NCH Software\PicoPDF\shellmenu.dll nchsetup.exe File created C:\Program Files (x86)\NCH Software\PicoPDF\shellmenua.msix nchsetup.exe -
Executes dropped EXE 3 IoCs
pid Process 2704 nchsetup.exe 3008 picopdf.exe 468 picopdf.exe -
Loads dropped DLL 26 IoCs
pid Process 3016 PicoPDFEditingSoftware.exe 3016 PicoPDFEditingSoftware.exe 3016 PicoPDFEditingSoftware.exe 3016 PicoPDFEditingSoftware.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe 2704 nchsetup.exe -
Registers COM server for autorun 1 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Wow6432Node\CLSID\{24bf56f0-aeda-4d2f-9aa2-c1a6fdec3a9b}\LocalServer32 nchsetup.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Wow6432Node\CLSID\{24bf56f0-aeda-4d2f-9aa2-c1a6fdec3a9b}\LocalServer32\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -systemnotifyevent" nchsetup.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 64 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.au\Shell nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.dv\Shell\NCHeditvideo\command nchsetup.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\heiffile\DefaultIcon\ = "%SystemRoot%\\SysWow64\\shell32.dll,19" nchsetup.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\cdofile\DefaultIcon\ = "%SystemRoot%\\SysWow64\\shell32.dll,19" nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.aiff\Shell\NCHeditsound\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind WavePad \"%L\"" nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.au\Shell\NCHeditsound\command nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.mpeg2 nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.webm\Shell\NCHeditvideo nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.mpeg\Shell\NCHconvertvideo\ = "Convert video file format with Prism" nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.jpg\Shell\NCHslideshow\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind PhotoStage \"%L\"" nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.rw2\Shell\NCHslideshow\ = "Create slideshow with PhotoStage" nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.rtf\shell\NCHconvertdoc\ = "Convert file type with Doxillion" nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.cab\Shell\NCHextract nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.dds\Shell\NCHeditphoto\command nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.heif\Shell\NCHeditphoto nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.jpg\Shell\NCHeditphoto\ = "Edit your photos with PhotoPad" nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.m4a\Shell\NCHconvertsound nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.TS\Shell\NCHeditvideo\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind VideoPad \"%L\"" nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.3g2\Shell\NCHconvertvideo\command nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.png\Shell\NCHconvertimage\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind Pixillion \"%L\"" nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.tga\Shell\NCHconvertimage\command nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.dng\Shell\NCHslideshow\command nchsetup.exe Key created \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\rw2file nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.rtf\Shell\NCHconvertdoc nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.aiff\Shell\NCHeditsound\command nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.aac\Shell\NCHconvertsound\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind Switch \"%L\"" nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.divx\Shell\NCHeditvideo\command nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.M2TS\Shell\NCHconvertvideo\command nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.cr2\Shell\NCHslideshow\command nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.srf\Shell\NCHslideshow\command nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.au\Shell\NCHeditsound\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind WavePad \"%L\"" nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.voc\Shell\NCHconvertsound\ = "Convert sound file format with Switch" nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.wav\Shell\NCHconvertsound\command nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.3gp\Shell nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.asf\Shell\NCHeditvideo\ = "Edit video file with VideoPad" nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.tga nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.rw2\Shell\NCHslideshow\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind PhotoStage \"%L\"" nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.srw\Shell\NCHslideshow nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.doc\Shell\NCHconvertdoc\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind Doxillion \"%L\"" nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.pdf nchsetup.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\.wp\ = "wpfile" nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.ico\Shell\NCHeditphoto nchsetup.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\drpfile\ = "Unhandled Extension Handler Finder" nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.vox\Shell\NCHconvertsound\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind Switch \"%L\"" nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.asf\Shell\NCHeditvideo\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind VideoPad \"%L\"" nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.mkv\Shell\NCHeditvideo nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.3gp\Shell\NCHconvertvideo\command nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.odt\Shell nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.7z\Shell\NCHextract\command nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.cab\Shell nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.dv\Shell\NCHconvertvideo nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.nrw\Shell\NCHslideshow\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind PhotoStage \"%L\"" nchsetup.exe Key created \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\.ddp nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.dv\Shell\NCHeditvideo\command nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.crw\Shell\NCHslideshow\command nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.bz2\Shell\NCHextract\ = "Extract with Express Zip" nchsetup.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\apjfile\ = "Unhandled Extension Handler Finder" nchsetup.exe Key created \REGISTRY\MACHINE\Software\Classes\SystemFileAssociations\.ds2\Shell\NCHconvertsound\command nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.xvid\Shell nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.nrw\Shell\NCHconvertimage\ = "Convert image file format with Pixillion" nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.html\Shell\NCHconvertdoc\command nchsetup.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\ddpfile\DefaultIcon\ = "%SystemRoot%\\SysWow64\\shell32.dll,19" nchsetup.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.wav nchsetup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SystemFileAssociations\.m4v\Shell\NCHeditvideo\command\ = "\"C:\\Program Files (x86)\\NCH Software\\PicoPDF\\picopdf.exe\" -extfind VideoPad \"%L\"" nchsetup.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2704 nchsetup.exe 2704 nchsetup.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3008 picopdf.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 3016 wrote to memory of 2704 3016 PicoPDFEditingSoftware.exe 28 PID 3016 wrote to memory of 2704 3016 PicoPDFEditingSoftware.exe 28 PID 3016 wrote to memory of 2704 3016 PicoPDFEditingSoftware.exe 28 PID 3016 wrote to memory of 2704 3016 PicoPDFEditingSoftware.exe 28 PID 3016 wrote to memory of 2704 3016 PicoPDFEditingSoftware.exe 28 PID 3016 wrote to memory of 2704 3016 PicoPDFEditingSoftware.exe 28 PID 3016 wrote to memory of 2704 3016 PicoPDFEditingSoftware.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\PicoPDFEditingSoftware.exe"C:\Users\Admin\AppData\Local\Temp\PicoPDFEditingSoftware.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3016 -
C:\Users\Admin\AppData\Local\Temp\n1s\nchsetup.exe"C:\Users\Admin\AppData\Local\Temp\n1s\nchsetup.exe" -installer "C:\Users\Admin\AppData\Local\Temp\PicoPDFEditingSoftware.exe" -instdata "C:\Users\Admin\AppData\Local\Temp\n1s\nchdata.dat"2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Executes dropped EXE
- Loads dropped DLL
- Registers COM server for autorun
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:2704 -
C:\Program Files (x86)\NCH Software\PicoPDF\picopdf.exe"C:\Program Files (x86)\NCH Software\PicoPDF\picopdf.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3008
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C:\Program Files (x86)\NCH Software\PicoPDF\picopdf.exe"C:\Program Files (x86)\NCH Software\PicoPDF\picopdf.exe" -installsched3⤵
- Executes dropped EXE
PID:468
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
159KB
MD5aa3440ea0ac1b25846731287f849fb62
SHA1484bf8fca647a5f9dcd4363ab9d47babf1c1e43b
SHA25664698d1ee067c8b398f07100b693886b5d113473a339dfaf7d43bc2898ae3810
SHA512cdc8acfc72c2d7586977f7b5c6156b77768835629de8e4b798ed8695ad152364af67f13e4bb475360b8609ded41bbb63cbfcf993222bb97afac650010df46f9e
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Filesize
3.4MB
MD54e1f5f4bcd2ff3fbcc266ad026fbbbd2
SHA1c2cc06979b8920511d78d15e0900e1f04f671d1c
SHA256cba2ab55a7afd7ae700f3999c5b74edd3c6cb76eee8fb25f6867e82651235550
SHA5124a82150f4d7446db5126095229b7f1534291a488fb5448e60d442ef3b1feb02d3004ecc42477d947f4adc86416ccc96713b40c50c3fdae8b75005bce958ab6e7