MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a0a795d76dd7a4f36bd9bd6ec65a3ba11293eefcbba4e290f2366e9932f60e0b. 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 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a0a795d76dd7a4f36bd9bd6ec65a3ba11293eefcbba4e290f2366e9932f60e0b
SHA3-384 hash: b2c76f2e3a78815dbe14fbc758fa51573b569bf3c4a50dfa09f9beaebfa2c4a551bfbc61870ed2763102e37d6acd1405
SHA1 hash: d14430a13a0c7879eafc9bab66ec31f9631a3ff5
MD5 hash: 4cc659befba7aaf53375613494faad9e
humanhash: oscar-island-zebra-west
File name:4cc659befba7aaf53375613494faad9e
Download: download sample
Signature Formbook
Create hunting rule
File size:21'931 bytes
First seen:2021-10-20 04:44:29 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 384:vch/DfNF8M9Yh9+rpceBgCKmgOutq8G9FcBC:cD/9Yh9OmCdqQD
TLSH T17EA2017EF59B0E489E56C668061ABBA5064DF41D73C440E237BCCB387A5C91B8B23D38
Reporter zbetcheckin
Tags:CVE-2017-11882 FormBook rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
187
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.27301.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

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

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

Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/a0a795d76dd7a4f36bd9bd6ec65a3ba11293eefcbba4e290f2366e9932f60e0b/results/dashboard
Verdict:
No Threat
Threat level:
  10/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/616faf76a9d585e6d52e4748/reports/0ef55925-d0e8-4d67-808a-23ca8a04c1d0/overview
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/873572
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
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 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: CMSTP Execution Process Creation
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Execution from Suspicious Folder
Sigma detected: File Dropped By EQNEDT32EXE
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 506003 Sample: ofrtAjpei7 Startdate: 20/10/2021 Architecture: WINDOWS Score: 100 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 Antivirus / Scanner detection for submitted sample 2->56 58 14 other signatures 2->58 10 EQNEDT32.EXE 12 2->10         started        15 WINWORD.EXE 291 19 2->15         started        process3 dnsIp4 44 103.155.83.184, 49167, 80 TWIDC-AS-APTWIDCLimitedHK unknown 10->44 34 C:\Users\user\AppData\Local\...\vbc[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 17 vbc.exe 1 5 10->17         started        file5 signatures6 process7 signatures8 46 Machine Learning detection for dropped file 17->46 48 Tries to detect virtualization through RDTSC time measurements 17->48 50 Injects a PE file into a foreign processes 17->50 20 vbc.exe 17->20         started        23 vbc.exe 17->23         started        process9 signatures10 60 Modifies the context of a thread in another process (thread injection) 20->60 62 Maps a DLL or memory area into another process 20->62 64 Sample uses process hollowing technique 20->64 66 Queues an APC in another process (thread injection) 20->66 25 explorer.exe 20->25 injected process11 dnsIp12 38 www.pineapplejacks.net 74.220.199.6, 49169, 80 UNIFIEDLAYER-AS-1US United States 25->38 40 www.reignbeautycompany.com 35.208.195.131, 49170, 80 GOOGLE-2US United States 25->40 42 www.shojicorpadvisory.com 25->42 68 System process connects to network (likely due to code injection or exploit) 25->68 29 cmstp.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:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a0a795d76dd7a4f36bd9bd6ec65a3ba11293eefcbba4e290f2366e9932f60e0b/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-10-20 04:45:05 UTC
AV detection:
19 of 44 (43.18%)
Threat level:
  5/5
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:bntn loader rat suricata
Link:
https://tria.ge/reports/211020-fdd1jahefk/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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
Downloads MZ/PE file
Executes dropped EXE
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
Malware Config
C2 Extraction:
http://www.forex-fm.online/bntn/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/a0a795d76dd7/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.96
Link:
https://yomi.yoroi.company/submissions/a0a795d76dd7a4f36bd9bd6ec65a3ba11293eefcbba4e290f2366e9932f60e0b

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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.

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 a0a795d76dd7a4f36bd9bd6ec65a3ba11293eefcbba4e290f2366e9932f60e0b

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1698105/

Comments


Avatar
zbet commented on 2021-10-20 04:44:30 UTC

url : hxxp://103.155.83.184/invoice/document_0200010.wbk