SSMA is handy tool for quickly getting an idea if a file is malicious.  

 

Install

sudo apt-get install python3-pip

 

git clone https://github.com/secrary/SSMA

cd SSMA

sudo pip3 install -r requirements.txt

 

Usage

To use, just run the command along with your VirusTotal API key and the file to get the results. After each test, it will ask you if you want to continue analysis. In this example I used a version mebroot for testing.

 

python3 ssma.py -h

python3 /home/twebb/Downloads/SSMA/ssma.py -k VT_API_KEY 00000025.exe

 

Results

 

????????????????????   ???? ??????

????????????????????? ????????????? Simple

??????????????????????????????????? Static

??????????????????????????????????? Malware

??????????????????? ??? ??????  ??? Analyzer

???????????????????     ??????  ???

 

File Details:

File: /home/twebb/malware/2-mar-2010 torpig/00000025.exe

Size: 280960 bytes

Type: application/x-dosexec

MD5:  ae26e139311e2cacef53cce6d8da09da

SHA1: b9942fd44e798073821dd4b1d9b21f1814d766ad

Date: Fri Nov 28 00:33:22 2003

PE file entropy: 7.618302492203651

Very high or very low entropy means that file is compressed or encrypted since truly random data is not common.

 

================================================================================

Continue? [Y/n] y

 

Number of Sections: 5

 

Section VirtualAddress VirtualSize SizeofRawData Entropy

.code   0x480                26965         27008 6.511691201650016

.rdata  0x6e00                 152           256 2.401459977262458

.data   0x6f00              251148        251264 7.654305920976193

INIT    0x44480                306           384 4.063770965426124

.reloc  0x44600                854           896 1.656681300794013

 

Very high or very low entropy means that file/section is compressed or encrypted since truly random data is not common.

 

SUSPICIOUS section names: INIT

================================================================================

Continue? [Y/n] y

 

Virustotal:

F-Secure - Gen:Rootkit.Heur.ruW@CS!sLed

NOD32 - a variant of Win32/Mebroot.CK

Ikarus - Backdoor.Win32.Sinowal

McAfee-GW-Edition - Trojan.Crypt.ZPACK.Gen

Symantec - Suspicious.Insight

BitDefender - Gen:Rootkit.Heur.ruW@CS!sLed

AntiVir - TR/Crypt.ZPACK.Gen

GData - Gen:Rootkit.Heur.ruW@CS!sLed

nProtect - Gen:Rootkit.Heur.ruW@CS!sLed

a-squared - Backdoor.Win32.Sinowal!IK

 

================================================================================

Continue? [Y/n] y

 

Scan file using Yara-rules.

With Yara rules you can create a "description" of malware families to detect new samples.

For more information: https://virustotal.github.io/yara/

 

Downloading Yara-rules...

 

These Yara rules specialised on the identification of well-known malware.

Result:

QuarianCode - Quarian code features

Quarian - Quarian

 

================================================================================

Continue? [Y/n] y

 

These Yara Rules aimed to detect well-known software packages, that can be used by malware to hide itself.

Result:

Visual_Cpp_2003_DLL_Microsoft

 

================================================================================

Continue? [Y/n] y

 

These Yara rules aimed to detect the existence of cryptographic algorithms.

Detected cryptographic algorithms:

contentis_base64 - This rule finds for base64 strings

 

================================================================================

Continue? [Y/n] y

 

There are lots of tools like this, but this one is worth giving a try due to how quick and easy the install was.  What yours favorite static analysis tool?

 

--

Tom Webb

@twsecblog