MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 82140d5a0bc99ee26b616ef63ed4abdd6db3275342e54c9ec4ff4bc860336659. 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: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 82140d5a0bc99ee26b616ef63ed4abdd6db3275342e54c9ec4ff4bc860336659
SHA3-384 hash: ff3be809d5758d0d3abbf0999ed9e36addb11abf54d46ac4a5cdd37efa2a95ebdd5ade9f6e4fd551a99d39cb0ec6352a
SHA1 hash: 4b4ae4632d08f1c2dfd5339a2b00549d312347f5
MD5 hash: 10ea6889fd7ca096c9b307b276a03b99
humanhash: magazine-autumn-three-steak
File name:10ea6889fd7ca096c9b307b276a03b99.rtf
Download: download sample
Signature Formbook
Create hunting rule
File size:13'264 bytes
First seen:2021-04-19 17:13:27 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 384:5yodfHge0vFyaDYg4gbrnekm4y+CzHE0B24PGi:ko59cHYgN5aHE044PF
TLSH 6A529EB0CEC07A14D77E48408A2D355C26B5B57C77870BC5BB4CEF814BAB66386B1889
Reporter abuse_ch
Tags:FormBook rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
121
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
payment advice .docx
Verdict:
Malicious activity
Analysis date:
2021-04-19 10:17:40 UTC
Tags:
generated-doc opendir exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/72766087-7c5c-49b6-92f0-48dc8da3c2e4

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
Detection(s):
Sanesecurity.Malware.27301.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-2.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.170830.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Sending an HTTP GET request
Sending a TCP request to an infection source by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/82140d5a0bc99ee26b616ef63ed4abdd6db3275342e54c9ec4ff4bc860336659/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/687397
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to prevent local Windows debugging
Detected unpacking (changes PE section rights)
Drops PE files to the user root directory
Found malware configuration
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 dropped file
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: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 392654 Sample: xEkyQl1Yn2.rtf Startdate: 19/04/2021 Architecture: WINDOWS Score: 100 44 www.ueditpro.com 2->44 46 www.tiffanymcolston.com 2->46 48 8 other IPs or domains 2->48 60 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->60 62 Multi AV Scanner detection for domain / URL 2->62 64 Found malware configuration 2->64 66 13 other signatures 2->66 11 EQNEDT32.EXE 16 2->11         started        16 WINWORD.EXE 336 20 2->16         started        18 EQNEDT32.EXE 2->18         started        signatures3 process4 dnsIp5 50 stdytheviejupcazfekr.dns.army 103.133.108.6, 49168, 80 VNPT-AS-VNVIETNAMPOSTSANDTELECOMMUNICATIONSGROUPVN Viet Nam 11->50 52 pxlme.me 51.15.139.10, 443, 49165 OnlineSASFR France 11->52 40 C:\Users\user\AppData\Local\...\winlog[1].exe, PE32 11->40 dropped 42 C:\Users\Public\vbc.exe, PE32 11->42 dropped 86 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 11->86 20 vbc.exe 19 11->20         started        file6 signatures7 process8 file9 38 C:\Users\user\AppData\...\k7tlm6nm1n.dll, PE32 20->38 dropped 68 Multi AV Scanner detection for dropped file 20->68 70 Detected unpacking (changes PE section rights) 20->70 72 Machine Learning detection for dropped file 20->72 74 3 other signatures 20->74 24 vbc.exe 20->24         started        signatures10 process11 signatures12 76 Modifies the context of a thread in another process (thread injection) 24->76 78 Maps a DLL or memory area into another process 24->78 80 Sample uses process hollowing technique 24->80 82 Queues an APC in another process (thread injection) 24->82 27 explorer.exe 24->27 injected process13 dnsIp14 54 www.naukrismartjob.info 198.54.117.244, 49169, 80 NAMECHEAP-NETUS United States 27->54 56 mercadowalton.com 160.153.136.3, 49173, 80 GODADDY-AMSDE United States 27->56 58 9 other IPs or domains 27->58 84 System process connects to network (likely due to code injection or exploit) 27->84 31 wscript.exe 27->31         started        34 autochk.exe 27->34         started        signatures15 process16 signatures17 88 Modifies the context of a thread in another process (thread injection) 31->88 90 Maps a DLL or memory area into another process 31->90 92 Tries to detect virtualization through RDTSC time measurements 31->92 36 cmd.exe 31->36         started        process18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/82140d5a0bc99ee26b616ef63ed4abdd6db3275342e54c9ec4ff4bc860336659/
Gathering data
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210419-2bvpycpt2e/
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: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
NSIS installer
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
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
Xloader
Malware Config
C2 Extraction:
http://www.cheristolentino.com/uwec/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/82140d5a0bc99ee26b616ef63ed4abdd6db3275342e54c9ec4ff4bc860336659

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 82140d5a0bc99ee26b616ef63ed4abdd6db3275342e54c9ec4ff4bc860336659

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1140223/
  
Delivery method
Distributed via web download

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