MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e53a57b9be38e41edf2f8cb4161ad6e155bfcb24990b5e1adbf12c8ba675710b. 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: 12


Intelligence 12 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e53a57b9be38e41edf2f8cb4161ad6e155bfcb24990b5e1adbf12c8ba675710b
SHA3-384 hash: 3206d48df4b4552bf56e819cd4df6940c308482e8ef112df684e3aa268c533d4f61734dcf230b5d1e1e30506c4d6983f
SHA1 hash: a1989067f27f57dc1902d8985462ef86e0eda704
MD5 hash: 80e2eb803bed9392466aa384bb8fcf79
humanhash: fourteen-whiskey-stairway-ceiling
File name:80e2eb803bed9392466aa384bb8fcf79.rtf
Download: download sample
Signature Formbook
Create hunting rule
File size:825'270 bytes
First seen:2024-08-09 06:49:32 UTC
Last seen:2024-08-09 07:28:13 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 6144:JwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAJ:r
TLSH T1AD050B2DD34B02598F620377AB571E5142BDBA7EF38552A1302C537933EAC3DA1252BE
Reporter abuse_ch
Tags:CVE-2017-11882 FormBook rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
117
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
AWB# 6290868304.docx
Verdict:
No threats detected
Analysis date:
2024-08-08 12:58:21 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/271e7087-fca6-4ba0-a395-d67243d23321

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.RoomService.20230808.UNOFFICIAL
Create hunting rule

Verdict:
Suspicious
Score:
50%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66b5bc1db35234d5cc65bd13
Tags:
Exploit Generic Network Office Obfuscated
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Using the Windows Management Instrumentation requests
Creating a window
DNS request
Сreating synchronization primitives
Launching a service
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/e53a57b9be38e41edf2f8cb4161ad6e155bfcb24990b5e1adbf12c8ba675710b/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/66b5bc1c9d37dfa04d266ce4/reports/fcc86b0e-9a0e-4751-89f6-8a95e33f3428/overview
Verdict:
Malicious
Labled as:
CVE-2018-0798
Link:
https://www.hybrid-analysis.com/sample/e53a57b9be38e41edf2f8cb4161ad6e155bfcb24990b5e1adbf12c8ba675710b
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1490400
Signature
Antivirus detection for URL or domain
Document exploit detected (process start blacklist hit)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Equation Editor Network Connection
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/e53a57b9be38e41edf2f8cb4161ad6e155bfcb24990b5e1adbf12c8ba675710b
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e53a57b9be38e41edf2f8cb4161ad6e155bfcb24990b5e1adbf12c8ba675710b/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-08-08 17:06:20 UTC
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4u5fpon6hdsb5xzprs2bmgww4fk37szetefv4gw36ewixjtvoefq._file
Result
Malware family:
n/a
Score:
  4/10
Tags:
discovery
Link:
https://tria.ge/reports/240809-js1pmasblh/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
System Location Discovery: System Language Discovery
Drops file in Windows directory
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/b3ca597e-576b-40b5-8cfa-ec46ff23d4c9
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e53a57b9be38/report/overview.html
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/e53a57b9be38e41edf2f8cb4161ad6e155bfcb24990b5e1adbf12c8ba675710b

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

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 e53a57b9be38e41edf2f8cb4161ad6e155bfcb24990b5e1adbf12c8ba675710b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3096361/
  
Delivery method
Distributed via web download

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