MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a79100e1d34dc5bc7663008fd4dfeabe61ce52864126d6fd84bc499cd04cfeb2. 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: 8


Intelligence 8 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a79100e1d34dc5bc7663008fd4dfeabe61ce52864126d6fd84bc499cd04cfeb2
SHA3-384 hash: 88bd6563f4914934de37271394ce24cabc74a713609a24509a2cdc62a7351b951778b615923697df7be11c3a3dbccf9f
SHA1 hash: 9920d6a9f294c4ab6fec91d94a0d9415f3f69ff8
MD5 hash: 04fb044011085bc906ede48c396020c5
humanhash: december-sierra-earth-eleven
File name:04fb044011085bc906ede48c396020c5.rtf
Download: download sample
Signature Formbook
Create hunting rule
File size:9'441 bytes
First seen:2020-11-23 16:13:00 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 192:jAdyX6SSVSIM6QujwF/yUPnC3hK34iGKCUV0hbG8pE22:m9nWyU0hk8KCUg6
TLSH A5125CD44BED363EF35161A207E864B8055FF1AA27C9C9F6B0CDA5926F252056932C4C
Reporter abuse_ch
Tags:FormBook rtf

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE dump

Intelligence

File Origin
# of uploads :
1
# of downloads :
240
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
Creating a file
Launching cmd.exe command interpreter
Deleting a system file
Sending an HTTP GET request
Launching a file downloaded from the Internet
Forced shutdown of a system process
Creating a process from a recently created file
Unauthorized injection to a system process
Result
Verdict:
MALICIOUS
Result
Threat name:
Unknown
Detection:
malicious
Classification:
n/a
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/545341
Signature
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a79100e1d34dc5bc7663008fd4dfeabe61ce52864126d6fd84bc499cd04cfeb2/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-11-20 16:24:19 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u6iqbyotjxc3y5tdach5jx7kxzq44uugietnn7mexrezzucm72za._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201123-cp93wpwcq2/
Behaviour
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
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.digitalcashteam.com/glt/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Bloodhound
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a79100e1d34dc5bc7663008fd4dfeabe61ce52864126d6fd84bc499cd04cfeb2

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

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

Web download

Formbook

Rich Text Format (RTF) rtf a79100e1d34dc5bc7663008fd4dfeabe61ce52864126d6fd84bc499cd04cfeb2

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/845471/
  
Delivery method
Distributed via web download

Comments