MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e6d371badc121f232f4305f3a50f0a136d1b7edbc3337414ca692c26ae41986c. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry

FormBook

Vendor detections: 5

Intelligence 5 IOCs YARA 3 File information Comments

SHA256 hash:	e6d371badc121f232f4305f3a50f0a136d1b7edbc3337414ca692c26ae41986c
SHA3-384 hash:	48997907ea9e434c6b962946237a7b004261a3ad8026e4ab0e607bbfda2f10538386a0936d756a9e3d3e1e0b04606338
SHA1 hash:	4c3870aef757ca5efcdc324239a8744ed20c10b9
MD5 hash:	8ea255af1117e83b0c6c4cd1f7ff4eab
humanhash:	aspen-cold-fifteen-potato
File name:	Invoice8252752.exe
Download:	download sample
Signature	FormBook Create hunting rule
File size:	326'144 bytes
First seen:	2020-06-02 07:00:19 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	acfd6abb9b51dc74b70cc24ba8999759 (4 x FormBook)
ssdeep	3072:i/2HRMd/qiEcHUFFms+qCNkkiY0ndiH+Q9y+IZrToLpQwATrJd32Q3z84XvZGX:yQRM1f/0FT+k9YuSFKToVQJrJv3fXvw
TLSH	B764DF417A69907DF049C23D0AE84E90BA1CAD1131F4B8E32DD136659E7374BBAF874B
Reporter	abuse_ch
Tags:	exe FormBook

abuse_ch

Malspam distributing FormBook:

HELO: mail.kpm-energy.com
Sending IP: 118.82.9.178
From: Rezty Ramadhany <rezty@kpmog.com>
Subject: Re: Bank details
Attachment: Invoice8252752.rar (contains "Invoice8252752.exe")

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection(s):

PUA.Win.Downloader.Aiis-6803892-0

Gathering data

Threat name:

Win32.Trojan.Kryptik

Status:

Malicious

First seen:

2020-06-02 13:24:51 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

22 of 31 (70.97%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=43jxdow4cipsgl2daxz2kdykcnwrw7w3ymzxifgknewcnlsbtbwa._file

Verdict:

malicious

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook persistence rat spyware stealer trojan

Link:

https://tria.ge/reports/201109-gzkdx2v4kx/

Behaviour

Suspicious use of WriteProcessMemory

Modifies Internet Explorer settings

Suspicious use of UnmapMainImage

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Drops file in Program Files directory

Suspicious use of SetThreadContext

Reads user/profile data of web browsers

Deletes itself

Adds policy Run key to start application

Formbook Payload

Formbook

Malware Config

C2 Extraction:

http://www.tromagy.com/yx5/

Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:	Formbook Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Formbook in memory
Reference:	internal research

Rule name:	win_formbook_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	autogenerated rule brought to you by yara-signator