Pftriage : Python Tool & Library To Help Analyse Files During Malware Triage & Analysis

Pftriage is a tool to help analyze files during malware triage. It allows an analyst to quickly view and extract properties of a file to help during the triage process.

The tool also has an analyse function which can detect common malicious indicators used by malware.

Also Read : ADAPT : Tool That Performs Automated Penetration Testing for WebApps

Dependencies

• pefile
• filemagic

Note: On Mac – Apple has implemented their own version of the file command. However, libmagic can be installed using homebrew

$ brew install libmagic

Usage

usage: pftriage [options]
Show information about a file for triage.
positional arguments:
file The file to triage.
optional arguments:
-h, –help show this help message and exit
-i, –imports Display import tree
-s, –sections Display overview of sections. For more detailed info
pass the -v switch
–removeoverlay Remove overlay data.
–extractoverlay Extract overlay data.
-r, –resources Display resource information
-R, –rich Display Rich Header information
-D DUMP_OFFSET, –dump DUMP_OFFSET
Dump data using the passed offset or ‘ALL’. Currently
only works with resources.
-e, –exports Display exports
-a, –analyze Analyze the file.
-v, –verbose Display version.
-V, –version Print version and exit.

Sections

Display Section information by using the -s or –sections switch. Additionally you can pass (-v) for a more verbose view of section details.

To export a section pass –dump and the desired section Virtual Address. (ex: –dump 0x00001000)

—- Section Overview (use -v for detailed section info) —-
Name Raw Size Raw Data Pointer Virtual Address Virtual Size Entropy Hash
.text 0x00012200 0x00000400 0x00001000 0x000121d8 6.71168555177 ff38fce4f48772f82fc77b4ef223fd74
.rdata 0x00005a00 0x00012600 0x00014000 0x0000591a 4.81719489022 b0c15ee9bf8480a07012c2cf277c3083
.data 0x00001a00 0x00018000 0x0001a000 0x0000ab80 5.28838495072 5d969a878a5106ba526aa29967ef877f
.rsrc 0x00002200 0x00019a00 0x00025000 0x00002144 7.91994689603 d361caffeadb934c9f6b13b2474c6f0f
.overlay 0x00009b30 0x0001bc00 0x00000000 0x00000000 0 N/A

Resources

Display resource data by using -r or –resources.

—- Resource Overview —-
Type: CODATA
Name Language SubLang Offset Size Code Page Type
0x68 LANG_RUSSIAN RUSSIAN 0x000250e0 0x00000cee 0x000004e4
0x69 LANG_RUSSIAN RUSSIAN 0x00025dd0 0x000011e6 0x000004e4
Type: RT_MANIFEST
Name Language SubLang Offset Size Code Page Type
0x1 LANG_ENGLISH ENGLISH_US 0x00026fb8 0x0000018b x000004e4

To extract a specific resource use -D with the desired offset. If you want to extract all resources pass ALL istead of a specific offset.

Imports

Display Import data and modules using -i or –imports. Imports which are identified as ordinals will be identified and include the Ordinal used.

[*] Loading File…
—- Imports —-
Number of imported modules: 4
KERNEL32.dll
|– GetProcessHeap
|– HeapFree
|– HeapAlloc
|– SetLastError
|– GetLastError
WS2_32.dll
|– getaddrinfo
|– freeaddrinfo
|– closesocket Ordinal[3] (Imported by Ordinal)
|– WSAStartup Ordinal[115] (Imported by Ordinal)
|– socket Ordinal[23] (Imported by Ordinal)
|– send Ordinal[19] (Imported by Ordinal)
|– recv Ordinal[16] (Imported by Ordinal)
|– connect Ordinal[4] (Imported by Ordinal)
ole32.dll
|– CoCreateInstance
|– …

Exports

Display exports using -e or –exports.

[*] Loading File…
—- Exports —-
Total Exports: 5
Address Ordinal Name
0x00001151 1 FindResources
0x00001103 2 LoadBITMAP
0x00001137 3 LoadICON
0x000010e9 4 LoadIMAGE
0x0000111d 5 LoadSTRINGW

Rich Headers

Display Rich headers using the -R or –rich flags.

[*] Loading File…
— Rich Header Details —
Checksum: 0x2b41e6a9
Id Product Count Build Id Build
— ——- —– ——– —–
150 AliasObj900 1 20413
132 Utc1500_CPP 36 21022 9.0 2008
149 Masm900 17 21022 9.0 2008
123 Implib800 3 50727 11.0 2012
1 Import0 102 0
131 Utc1500_C 123 21022 9.0 2008
145 Linker900 1 21022 9.0 2008

Metadata

File and version metadata is displayed if no options are passed on the commandline.

[] Loading File… [] Processing File details…
—- File Summary —-
General
Filename samaple.exe
Magic Type PE32 executable (GUI) Intel 80386, for MS Windows
Size 135168
First Bytes 4d 5a 90 00 03 00 00 00 04 00 00 00 ff ff 00 00
Hashes
MD5 8e8a8fe8361c7238f60d6bbfdbd304a8
SHA1 557832efe10daff3f528a3c3589eb5a6dfd12447
SHA256 118983ba4e1c12a366d7d6e9461c68bf222e2b03f3c1296091dee92ac0cc9dd8
Import Hash 0239fd611af3d0e9b0c46c5837c80e09
ssdeep
Headers
Subsystem IMAGE_SUBSYSTEM_WINDOWS_GUI
Linker Version 12.0 – (Visual Studio 2013)
Image Base 0x400000
Compile Time Thu Jun 23 16:04:21 2016 UTC
Checksum 0
Filename sample.exe
EP Bytes 55 8b ec 51 83 65 fc 00 8d 45 fc 56 57 50 e8 64
Signature 0x4550
First Bytes 4d 5a 90 00 03 00 00 00 04 00 00 00 ff ff 00 00
Sections 4
Entry Point 0x139de
Packed False
Size 135168
Characteristics
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_RELOCS_STRIPPED

Analyze

PFTriage can perform simple analysis of a file to help identify malicious characteristics.

[] Loading File… [] Analyzing File…
[*] Analysis Complete…
[!] Checksum Invalid CheckSum
[!] AntiDebug AntiDebug Function import [GetTickCount]
[!] AntiDebug AntiDebug Function import [QueryPerformanceCounter]
[!] Imports Suspicious API Call [TerminateProcess]
[!] AntiDebug AntiDebug Function import [SetUnhandledExceptionFilter]
[!] AntiDebug AntiDebug Function import [IsDebuggerPresent]