MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af71b2c0fa2345a5e46ce52b14f9e3ec658b4e195105c73f4443c79da7e286e8. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: af71b2c0fa2345a5e46ce52b14f9e3ec658b4e195105c73f4443c79da7e286e8
SHA3-384 hash: ad85d06ecc3c1ca3b5760032060eec0e37fc7eb9e75c52607a93e7be5b60aac62266c97adf5b60339651d1768392b6d2
SHA1 hash: e68cde19da2ce7e034125e0bd50ddbb67c8e08d1
MD5 hash: 143154ceea75f57098d287291c155dfe
humanhash: muppet-one-beryllium-lamp
File name:upz.rtf
Download: download sample
Signature Formbook
Create hunting rule
File size:144'039 bytes
First seen:2026-07-29 11:03:19 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/plain
ssdeep 768:fetb9ps+i8WfhsgPnRwY+yxogTByLfAVItkck0:WtY+dE2iEkVIto0
TLSH T1ADE3728AD7AD82B9C246A8730CA5014D8CF91F37F09649B4F4BCE1863BAC11D577C1B9
Magika txt
Reporter lowmal3
Tags:CVE-2017-11882 FormBook rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
57
Origin country :
DE DE
Vendor Threat Intelligence
Malware configuration found for:
MSO
Details
Link:
https://research.acce.ciphertechsolutions.com/results/f6a0df2a-0e75-4ccd-a810-f31c617e7b95/
Verdict:
Legit
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.27333.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-1.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.26244.RtfHeur.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.EvilRTF.CVE-2017-0199-Obfus.UNOFFICIAL
Create hunting rule

YARA.DITEKSHEN_INDICATOR_RTF_Malver_Objects.UNOFFICIAL
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
DNS request
Creating a window
Creating a file
Creating a process from a recently created file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Possible injection to a system process
Forced shutdown of a system process
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/af71b2c0fa2345a5e46ce52b14f9e3ec658b4e195105c73f4443c79da7e286e8/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Labled as:
CVE-2018-0798
Link:
https://www.hybrid-analysis.com/sample/af71b2c0fa2345a5e46ce52b14f9e3ec658b4e195105c73f4443c79da7e286e8
Verdict:
Malicious
File Type:
rtf
First seen:
2026-07-29T09:19:00Z UTC
Last seen:
2026-07-30T20:11:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/af71b2c0fa2345a5e46ce52b14f9e3ec658b4e195105c73f4443c79da7e286e8/results?tab=lookup
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1949469
Signature
Antivirus / Scanner detection for submitted sample
Initial sample is an obfuscated RTF file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/af71b2c0fa2345a5e46ce52b14f9e3ec658b4e195105c73f4443c79da7e286e8
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/af71b2c0fa2345a5e46ce52b14f9e3ec658b4e195105c73f4443c79da7e286e8/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2026-07-29 11:41:56 UTC
File Type:
Document
Extracted files:
3
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=v5y3fqh2enc2lzdm4uvrj6pd5rsywtqzkec4op2eipdz3j7cq3ua._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/260729-nsmvzsfk8s/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/af71b2c0fa23/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/af71b2c0fa2345a5e46ce52b14f9e3ec658b4e195105c73f4443c79da7e286e8

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:SUSP_INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:https://github.com/ditekshen/detection
Rule name:SUSP_RTF_Header_Anomaly_RID2F7F
Create hunting rule
Author:Florian Roth
Description:Detects malformed RTF header often used to trick mechanisms that check for a full RTF header
Reference:https://twitter.com/ItsReallyNick/status/975705759618158593

File information

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

Comments