MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c210aaa467b87329ad410c0d0538011014506c758026f3154fc2ba7003069b72. 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: 6

Intelligence 6 IOCs YARA 1 File information Comments

SHA256 hash:	c210aaa467b87329ad410c0d0538011014506c758026f3154fc2ba7003069b72
SHA3-384 hash:	130cbc87f4ab19b8262a33cec7691b592a2858cb7866879c63693bb4e99f4f679ee2643f0084a51600bcfbec92fda828
SHA1 hash:	0bc9e074707b0313bfe06ae1299eed8035803e17
MD5 hash:	057614f5ea77dd2feffece63e20d4bce
humanhash:	happy-september-butter-papa
File name:	PURCHASE ORDER CONFIRMATION.xlsx
Download:	download sample
Signature	Formbook Create hunting rule
File size:	701'440 bytes
First seen:	2020-08-18 12:44:35 UTC
Last seen:	Never
File type:	xlsx
MIME type:	application/encrypted
ssdeep	12288:cAicWm45yCWZPX/A5xz2f0zZQ6hGi2VtqlKuJmry0fn1bGsgzZT4bGEGj:9icJZP45h8yZ/oi2VtJ7f1b8zebJGj
TLSH	E9E423AEACD0EF53CE37B2BB9B5D9AF2542DEC739B40508350A432079CB0B505DB1268
Reporter	abuse_ch
Tags:	FormBook xlsx

abuse_ch

Malspam distributing Formbook:

HELO: fr1-cp01-eq.cpanel-srv.com
Sending IP: 185.184.71.3
From: EASTERN BROTHER SHIPPING CO.,LIMITED <lefteris@kontogiorgakis.gr>
Reply-To: shippingebs@vip.163.com
Subject: RE: Purchase order confirmation and proforma invoice
Attachment: PURCHASE ORDER CONFIRMATION.xlsx

FormBook payload URL:
http://chinese2stdyonlyywalkaloneinlifev18tfd.duckdns.org/chnsfrnd2/winlog.exe

FormBook C2:
http://www.flekcht.com/ngh/

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection(s):

PUA.Doc.Packed.EncryptedDoc-6563700-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Launching a process

DNS request

Creating a file in the %AppData% directory

Launching cmd.exe command interpreter

Deleting a recently created file

Setting browser functions hooks

Sending an HTTP GET request

Launching a file downloaded from the Internet

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Creating a process from a recently created file

Unauthorized injection to a system process

Unauthorized injection to a browser process

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c210aaa467b87329ad410c0d0538011014506c758026f3154fc2ba7003069b72/

Threat name:

Win32.Trojan.Ymacco

Status:

Malicious

First seen:

2020-08-18 02:19:52 UTC

AV detection:

15 of 29 (51.72%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=yiikvjdhxbzstlkbbqgqkoabcakfa3dvqatpgfkpyk5haaygtnza._file

Result

Malware family:

formbook

Score:

10/10

Tags:

rat persistence spyware trojan stealer family:formbook

Link:

https://tria.ge/reports/200818-7kqvg5y6m6/

Behaviour

Launches Equation Editor

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Drops file in Program Files directory

Suspicious use of SetThreadContext

Loads dropped DLL

Reads user/profile data of web browsers

Uses the VBS compiler for execution

Adds policy Run key to start application

Blacklisted process makes network request

Executes dropped EXE

Formbook Payload

Formbook

Malware Config

C2 Extraction:

http://www.flekcht.com/ngh/

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/c210aaa467b87329ad410c0d0538011014506c758026f3154fc2ba7003069b72

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.