MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d27174550c627e2ae425db9dc83ed7cb1856034184c6ce333efcf383506abd88. 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: 10


Intelligence 10 IOCs YARA 7 File information Comments
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SHA256 hash: d27174550c627e2ae425db9dc83ed7cb1856034184c6ce333efcf383506abd88
SHA3-384 hash: cd3b664dd07dd68dd608ae7a80ea22b9ed144c696416d5f0fd224577d735b4aea99a413c86d18ea492bc7811feda7f50
SHA1 hash: c6f96ca18399b670f8721b85c8c86ededc7d079f
MD5 hash: 9e1772002f8791df8ccc8534c234e971
humanhash: red-july-princess-rugby
File name:9e1772002f8791df8ccc8534c234e971.rtf
Download: download sample
Signature Formbook
Create hunting rule
File size:6'116 bytes
First seen:2021-02-01 09:05:06 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 96:FXYgADwVXPQw/xX4tDJpjxb+L96IvGBfOWIfXUYN9EYGTvTijMwUUp53Hxe:FW0XPTx4/G9zmS39pmvaMM53Re
TLSH DAC16DD08E08261DE21516B69E4D7E64435DB83729D69BE236ACEFE27F22404CB76809
Reporter abuse_ch
Tags:FormBook rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
123
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
9e1772002f8791df8ccc8534c234e971.rtf
Verdict:
Malicious activity
Analysis date:
2021-02-01 09:07:05 UTC
Tags:
exploit CVE-2017-11882 trojan formbook stealer
Link:
https://app.any.run/tasks/5017044f-36cb-476b-8896-ab7cef6447e7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
Creating a file
Launching cmd.exe command interpreter
Deleting a recently created file
Sending an HTTP GET request
Launching a file downloaded from the Internet
Creating a process from a recently created file
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/d27174550c627e2ae425db9dc83ed7cb1856034184c6ce333efcf383506abd88/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/595115
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Drops PE files to the user root directory
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Suspicious Program Location Process Starts
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 346593 Sample: R85exvLDws.rtf Startdate: 01/02/2021 Architecture: WINDOWS Score: 100 46 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->46 48 Multi AV Scanner detection for domain / URL 2->48 50 Found malware configuration 2->50 52 17 other signatures 2->52 10 EQNEDT32.EXE 12 2->10         started        15 WINWORD.EXE 336 18 2->15         started        17 EQNEDT32.EXE 2->17         started        process3 dnsIp4 44 3.34.179.142, 49165, 80 AMAZON-02US United States 10->44 34 C:\Users\user\AppData\Local\...\hkcmd[1].exe, PE32 10->34 dropped 36 C:\Users\Public\vbc.exe, PE32 10->36 dropped 70 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->70 19 vbc.exe 10->19         started        file5 signatures6 process7 signatures8 54 Machine Learning detection for dropped file 19->54 56 Tries to detect virtualization through RDTSC time measurements 19->56 58 Injects a PE file into a foreign processes 19->58 22 vbc.exe 19->22         started        process9 signatures10 60 Modifies the context of a thread in another process (thread injection) 22->60 62 Maps a DLL or memory area into another process 22->62 64 Sample uses process hollowing technique 22->64 66 Queues an APC in another process (thread injection) 22->66 25 explorer.exe 22->25 injected process11 dnsIp12 38 mrcabinetkitchenandbath.com 108.167.156.42, 49172, 80 UNIFIEDLAYER-AS-1US United States 25->38 40 illfingers.com 162.241.217.138, 49170, 80 UNIFIEDLAYER-AS-1US United States 25->40 42 18 other IPs or domains 25->42 68 System process connects to network (likely due to code injection or exploit) 25->68 29 netsh.exe 25->29         started        signatures13 process14 signatures15 72 Modifies the context of a thread in another process (thread injection) 29->72 74 Maps a DLL or memory area into another process 29->74 76 Tries to detect virtualization through RDTSC time measurements 29->76 32 cmd.exe 29->32         started        process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d27174550c627e2ae425db9dc83ed7cb1856034184c6ce333efcf383506abd88/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-02-01 08:40:22 UTC
AV detection:
15 of 45 (33.33%)
Threat level:
  5/5
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader loader rat spyware stealer trojan
Link:
https://tria.ge/reports/210201-nwfqhdtga2/
Behaviour
Checks processor information in registry
Enumerates system info in registry
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
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
Blocklisted process makes network request
Executes dropped EXE
Xloader Payload
Formbook
Xloader
Malware Config
C2 Extraction:
http://www.rizrvd.com/bw82/
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/d27174550c627e2ae425db9dc83ed7cb1856034184c6ce333efcf383506abd88

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:INDICATOR_RTF_EXPLOIT_CVE_2017_11882_4
Create hunting rule
Author:ditekSHen
Description:detects RTF variant documents potentially exploiting CVE-2018-0802 or CVE-2017-11882
Rule name:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
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 d27174550c627e2ae425db9dc83ed7cb1856034184c6ce333efcf383506abd88

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/986079/
  
Delivery method
Distributed via web download

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