MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 679d3d78942a3891c1b02507acb2defb1f63082e05461686dfac0e55fe063df5. 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


RemcosRAT


Vendor detections: 17


Intelligence 17 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 679d3d78942a3891c1b02507acb2defb1f63082e05461686dfac0e55fe063df5
SHA3-384 hash: a368200ac6593784015c36e411c649c32bc791cd9342666f110be70b7dacc08bfcc783e9f01bb15597de3bfd72349e5e
SHA1 hash: b80b3566cdd2271605874aad154829d1b7939c60
MD5 hash: 44ecf083a8f365d705ab1ed2e129362c
humanhash: oscar-item-michigan-blue
File name:hdi3ehrn3bbbe380e3hjs93jds30dssdj233kfscoo0d9j34jds4jhsdj543jdsh3j4f44hjh5jh.doc
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:49'440 bytes
First seen:2025-10-10 09:58:42 UTC
Last seen:2025-10-10 14:20:02 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 384:2bV3vRqO1wGuwGEw7BNKejOi/cysMD+WYuXQh4ONqfar:2i5Nxii/cyFDHYuAh/Nmu
TLSH T10D23CE59D78F81A1CB84A377031B4A8902FCB73EB70115B575AC83313BEE82E14A967C
TrID 83.3% (.RTF) Rich Text Format (5000/1)
16.6% (.JSON) JSON object (generic) (1000/1)
Magika txt
Reporter JAMESWT_WT
Tags:216-9-227-119 CVE-2017-11882 doc RemcosRAT

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

RTF Object

In this RTF file the following objects could be found:

IndexClass NameObjectFile sizeSHA256 hash
00000BF6hn/an/a1'774 bytes 975b5b3387ce90ce756690c31f021f1d038ccc53d9076c51df64b045ee5e3416

Intelligence

File Origin
# of uploads :
3
# of downloads :
137
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Nadina_PC_2025-10-08_09_26_10.320.zip
Verdict:
Malicious activity
Analysis date:
2025-10-08 09:26:54 UTC
Tags:
cve-2017-0199 exploit
Link:
https://app.any.run/tasks/4560f20a-20d3-43d2-824e-e0681360596e

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

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

TwinWave.EvilRTF.ObfusRunAway.20240409.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68e8d90f777ae46bec40fc7e
Tags:
obfuscate vmdetect office spawn
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for synchronization primitives
Launching a process
Creating a window
Сreating synchronization primitives
Launching a service
Connection attempt to an infection source by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/679d3d78942a3891c1b02507acb2defb1f63082e05461686dfac0e55fe063df5/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/679d3d78942a3891c1b02507acb2defb1f63082e05461686dfac0e55fe063df5
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=a0141a27-5721-4bdb-adc6-827185491bca
Result
Verdict:
MALICIOUS
Verdict:
Malicious
File Type:
rtf
First seen:
2025-10-08T04:12:00Z UTC
Last seen:
2025-10-10T10:09:00Z UTC
Hits:
~100
Detections:
Trojan-Downloader.Win32.Agent.sb Trojan.Win32.Shelma.sb Trojan.MSOffice.Agent.sb HEUR:Trojan-Downloader.Script.Generic HEUR:Exploit.MSOffice.Generic HEUR:Exploit.MSOffice.CVE-2018-0802.gen Exploit.MSOffice.CVE-2018-0802.b Exploit.MSOffice.CVE-2017-11882.sb Trojan.Win32.InjectorNetT.s Trojan.JS.SAgent.sb PDM:Trojan.Win32.Generic Trojan-Dropper.MSOffice.SDrop.sb Trojan-Downloader.MSOffice.SLoad.sb
Link:
https://opentip.kaspersky.com/679d3d78942a3891c1b02507acb2defb1f63082e05461686dfac0e55fe063df5/results?tab=lookup
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/679d3d78942a3891c1b02507acb2defb1f63082e05461686dfac0e55fe063df5
Verdict:
inconclusive
YARA:
2 match(es)
Tags:
RTF File
Link:
https://app.malva.re/file/44ecf083a8f365d705ab1ed2e129362c
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/679d3d78942a3891c1b02507acb2defb1f63082e05461686dfac0e55fe063df5/
Verdict:
Malicious
Threat:
Exploit.MSOffice.CVE-2018-0802
Link:
https://tip.neiki.dev/file/679d3d78942a3891c1b02507acb2defb1f63082e05461686dfac0e55fe063df5
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2025-10-08 07:48:03 UTC
File Type:
Document
Extracted files:
5
AV detection:
18 of 32 (56.25%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m6ot26eufi4jdqnqeud2zmw67mpwgcboavdbnbw7vqhfl7qghx2q._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/251010-l1dwyatjz2/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e4116eec-e853-4e03-91b8-c3c5d2192c1d
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/679d3d78942a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/679d3d78942a3891c1b02507acb2defb1f63082e05461686dfac0e55fe063df5

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

RemcosRAT

Word file doc 679d3d78942a3891c1b02507acb2defb1f63082e05461686dfac0e55fe063df5

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3667155/
  
Delivery method
Distributed via web download

Comments