MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5ab40f12765a612b39c842e214dc877217074c83d7c2a4114380da8fe6a7d83c. 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: 7


Intelligence 7 IOCs YARA 1 File information Comments
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SHA256 hash: 5ab40f12765a612b39c842e214dc877217074c83d7c2a4114380da8fe6a7d83c
SHA3-384 hash: 6d103b88c2a14c40228ef2ce1dfbebdd2af42c1c7f2132c40b9579c154ce704d6f962616c511b177f2907d7d98610354
SHA1 hash: ec968102692ff9cb9c3347334f2e97dd9b53e644
MD5 hash: ea34109c78fad3492b6c181e9e442304
humanhash: muppet-juliet-magazine-diet
File name:PURCHASE_ORDER_010333.xlsx
Download: download sample
Signature Formbook
Create hunting rule
File size:698'368 bytes
First seen:2020-08-17 07:02:51 UTC
Last seen:2020-08-18 05:38:58 UTC
File type:Excel file xlsx
MIME type:application/encrypted
ssdeep 12288:0o1zksbEpguRhHjNg/9/YaRMlUEds1DRvZ6m4W1mTF7HXqoW35/+brJthGqUe+vK:0IZSV6V/YplwlvODqFYb9tIo+js6w
TLSH D4E42360F4641B3AF1530EF43914CB41599FBEE1236AD08377287B5EA678BF605C3AA1
Reporter abuse_ch
Tags:CVE-2017-11882 FormBook xlsx


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: xv20.pinotvineryms.gq
Sending IP: 161.35.92.129
From: Suya Wang <sales@pinotvineryms.gq>
Reply-To: Suya Wang <eterecomo@eternalexposure.com.my>
Subject: RE: Request for Quotation
Attachment: PURCHASE_ORDER_010333.xlsx

Formbook payload URL:
http://saidagruop.jp/DOC99281270.exe

Formbook C2:
http://www.flekcht.com/crb/

Intelligence

File Origin
# of uploads :
3
# of downloads :
63
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
PUA.Doc.Packed.EncryptedDoc-6563700-0
Create hunting rule

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
Launching a file downloaded from the Internet
Unauthorized injection to a recently created process by context flags manipulation
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Unauthorized injection to a system process
Result
Threat name:
Unknown
Detection:
malicious
Classification:
n/a
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/432733
Signature
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Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 268677 Sample: PURCHASE_ORDER_010333.xlsx Startdate: 17/08/2020 Architecture: WINDOWS Score: 48 13 cdn.onenote.net 2->13 15 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->15 7 EXCEL.EXE 169 51 2->7         started        9 mspaint.exe 27 2 2->9         started        signatures3 process4 process5 11 splwow64.exe 7->11         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5ab40f12765a612b39c842e214dc877217074c83d7c2a4114380da8fe6a7d83c/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-08-16 21:03:48 UTC
File Type:
Document
Extracted files:
6
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lk2a6etwljqswooiilrbjxehoilqoted27bkiekdqdni7zvh3a6a._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/200817-7wne4kwg96/
Behaviour
Launches Equation Editor
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
Suspicious use of SetThreadContext
Loads dropped DLL
Uses the VBS compiler for execution
Blacklisted process makes network request
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.flekcht.com/crb/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Exploit
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5ab40f12765a612b39c842e214dc877217074c83d7c2a4114380da8fe6a7d83c

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:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Excel file xlsx 5ab40f12765a612b39c842e214dc877217074c83d7c2a4114380da8fe6a7d83c

(this sample)

Formbook

Executable exe 2a6f4ceccb614247724bff7ecc0241c756b3d0d971734ebf7d15d2c822975ff1

  
URLhaus
https://urlhaus.abuse.ch/url/422540/
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 2a6f4ceccb614247724bff7ecc0241c756b3d0d971734ebf7d15d2c822975ff1
  
Dropping
MD5 708a1b01fec5b30cba9afffb119eb4f4

Comments