About size of the file 'HiJackThis.exe'

[dragokas]

I was sometimes asked questions, why HiJackThis.exe is so huge in size ( ~ 5,6 MB ) compairing to original v2.0.5 (380 KB.)

Firstly, you need to understand that this is 100% reworked code with huge additions, see basic changelog under this spoiler or a complete changelog

Next, v2.0.5 is UPX-ed (packed), Fork - is not.

Today, this question is interested for myself too, so I decided to measure all in details.

Here it is.

Total size:

Version	Unpacked (no UPX)	7zip (-mx9)
v2.0.5	1276 KB	346 KB.
v2.8.0.4	5683 KB	1843 KB.

Size of separate modules of v2.8.0.4 (in KB.):

Module name	Unpacked exe	7zip (-mx9)
Core code and classes*	1344	395
StartupList2 + Microsoft MScomctl.dll	1124 + 1044	230 + 446
Backup & ABR	408	180
Regexp reserve subsystem (PCRE2)	348	179
Translations, ChangeLog, EULA	444	120
Icons, Logo	148	78
WhiteLists	300	66
Main form controls & menu & Other tools	204	50
Digital signature check	104	31
ADS Spy	52	20
ProcMan	52	17
RegKeyUnlocker	44	17
XmlParser	44	15

* Core code and classes includes:

• New 'File', 'Hash', 'Process', 'Service', 'Task' and other modules.
• New 'Reg. hive enum', 'Ini file', 'OSInfo', 'Process', 'Registry', 'String Builder' and other classes.
• Code for detection and curing R, F, O sections.

Future updates

Microsoft MScomctl.dll is planned to be replaced by native VB6 code of unicode aware controls.
Replacement weighs ~ + 3992 KB (exe), or + 1049 (7zip),
so HJT size in future builds can be increased up to ~ + 3 MB (exe), or + 0,5 MB (in archive).