MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 517359dcc1523d91f7e36cceb50f4463cd842dcf301b9f6028b34e2fa376fced. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 517359dcc1523d91f7e36cceb50f4463cd842dcf301b9f6028b34e2fa376fced
SHA3-384 hash: 429b95da44f173d83683e36fd1f6b3288a2a0c1578a9f2dd169178dd402a5978fb8336cca9d200923016d21cb674bebc
SHA1 hash: 00a1536e8940802ce0f96c038e54116ad2c120bc
MD5 hash: affc661164b61afcda71b8d223742242
humanhash: neptune-comet-magazine-emma
File name:affc661164b61afcda71b8d223742242
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:65'779 bytes
First seen:2024-03-20 04:23:33 UTC
Last seen:2024-03-20 07:37:56 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 1536:nc8MT+wONuw/wtVepZAUnh81waZRb+I3TiqxVQv0wlnXvsORhN9UfmRBpxBFL4:ncjTMuw/wtVepZ/hCwaZRb+I3TzxY7lm
TLSH T134537C2EE70F0915DF5596BB434A4B4A09FCB33DB38140B139AC977437AD82E4A6297C
Reporter zbetcheckin
Tags:CVE-2017-11882 RemcosRAT rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
127
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
517359dcc1523d91f7e36cceb50f4463cd842dcf301b9f6028b34e2fa376fced.rtf
Verdict:
No threats detected
Analysis date:
2024-03-20 04:25:05 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e9818126-4ddd-46aa-b05b-1002407a20bb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.28765.RtfHeur.ObjUpd.UNOFFICIAL
Create hunting rule

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

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

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
Sending an HTTP GET request
Creating a file in the %AppData% directory
Сreating synchronization primitives
Creating a file in the %temp% directory
Changing an executable file
Launching a service
Moving a file to the Program Files subdirectory
Replacing files
Connection attempt by exploiting the app vulnerability
Launching a file downloaded from the Internet
Creating a process from a recently created file
Infecting executable files
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/517359dcc1523d91f7e36cceb50f4463cd842dcf301b9f6028b34e2fa376fced/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
autoit embedequation exploit fingerprint keylogger lolbin packed shell32 shellcode
Link:
https://www.filescan.io/uploads/65fa64e387137159d44ac5cf/reports/644ec1d0-af1b-4c71-bd00-674834acf64a/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/517359dcc1523d91f7e36cceb50f4463cd842dcf301b9f6028b34e2fa376fced
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1412137
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Document exploit detected (process start blacklist hit)
Drops PE files with benign system names
Drops VBS files to the startup folder
Found malware configuration
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
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 establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Shellcode detected
Sigma detected: Drops script at startup location
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: System File Execution Location Anomaly
Sigma detected: Windows Binaries Write Suspicious Extensions
Sigma detected: WScript or CScript Dropper
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1412137 Sample: bmlpfvQYLk.rtf Startdate: 20/03/2024 Architecture: WINDOWS Score: 100 77 Multi AV Scanner detection for domain / URL 2->77 79 Found malware configuration 2->79 81 Malicious sample detected (through community Yara rule) 2->81 83 24 other signatures 2->83 14 WINWORD.EXE 291 15 2->14         started        17 wscript.exe 1 2->17         started        process3 file4 69 ~WRF{0EF26768-5E50...3-7E592130D5F7}.tmp, Composite 14->69 dropped 20 EQNEDT32.EXE 12 14->20         started        73 Windows Scripting host queries suspicious COM object (likely to drop second stage) 17->73 25 bh.exe 2 17->25         started        signatures5 process6 dnsIp7 71 198.23.187.132, 49161, 80 AS-COLOCROSSINGUS United States 20->71 63 C:\Users\user\AppData\Roaming\wininit.exe, PE32 20->63 dropped 65 C:\Users\user\AppData\...\wininit[1].exe, PE32 20->65 dropped 91 Office equation editor establishes network connection 20->91 93 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 20->93 27 wininit.exe 6 20->27         started        95 Binary is likely a compiled AutoIt script file 25->95 31 bh.exe 2 25->31         started        file8 signatures9 process10 file11 67 C:\Users\user\AppData\Local\...\bh.exe, PE32 27->67 dropped 103 Multi AV Scanner detection for dropped file 27->103 105 Binary is likely a compiled AutoIt script file 27->105 33 bh.exe 3 27->33         started        37 bh.exe 2 31->37         started        signatures12 process13 file14 61 C:\Users\user\AppData\Roaming\...\bh.vbs, data 33->61 dropped 85 Binary is likely a compiled AutoIt script file 33->85 87 Drops VBS files to the startup folder 33->87 39 bh.exe 2 33->39         started        42 bh.exe 2 37->42         started        signatures15 process16 signatures17 97 Binary is likely a compiled AutoIt script file 39->97 44 bh.exe 2 39->44         started        47 bh.exe 42->47         started        process18 signatures19 107 Binary is likely a compiled AutoIt script file 44->107 49 bh.exe 2 44->49         started        process20 signatures21 75 Binary is likely a compiled AutoIt script file 49->75 52 bh.exe 2 49->52         started        process22 signatures23 89 Binary is likely a compiled AutoIt script file 52->89 55 bh.exe 2 52->55         started        process24 signatures25 99 Binary is likely a compiled AutoIt script file 55->99 58 bh.exe 2 55->58         started        process26 signatures27 101 Binary is likely a compiled AutoIt script file 58->101
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/517359dcc1523d91f7e36cceb50f4463cd842dcf301b9f6028b34e2fa376fced
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/517359dcc1523d91f7e36cceb50f4463cd842dcf301b9f6028b34e2fa376fced/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-03-19 11:08:48 UTC
File Type:
Document
Extracted files:
4
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kfzvtxgbki6zd57dnthlkd2empgyilopganz6ybiwnhc7i3w7twq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/240320-e1c63sge29/
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 use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
AutoIT Executable
Drops startup file
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/517359dcc152/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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: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

Rich Text Format (RTF) rtf 517359dcc1523d91f7e36cceb50f4463cd842dcf301b9f6028b34e2fa376fced

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2787316/

Comments


Avatar
zbet commented on 2024-03-20 04:23:34 UTC

url : hxxp://198.23.187.132/xampp/gdf/meanducantlivetogethrebecauseifoundsomebegsinsideofuswichistartedtoclearfromu____anywayallgoodfrommyendtoundersandhowmuchiam.doc