MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 98bcb2a98c5347e4409349f1605a7883a40a541cffc4aa62bf7c77b5160cdd20. 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: 15


Intelligence 15 IOCs YARA 1 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 98bcb2a98c5347e4409349f1605a7883a40a541cffc4aa62bf7c77b5160cdd20
SHA3-384 hash: cdab85871c08632e84d123b4b65557c6253af4add3ceaff06610b1c7a8d3893b7fa45ebe99b816f25924e3c4c7cad0ba
SHA1 hash: 71b79e6f053b89985d109d81670f2dce172775ae
MD5 hash: 904af9fb7e5bee74577f430af1080585
humanhash: fifteen-oxygen-beryllium-undress
File name:904af9fb7e5bee74577f430af1080585
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:99'712 bytes
First seen:2024-10-13 05:27:20 UTC
Last seen:2024-10-13 06:24:33 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:czOjyekZVi0QtGJPKrEvK64F5nMn10Me3Ffp8w:HvoetGJid6K5nmW3Fp8w
TLSH T113A3684CA78F45A5CF54A27703260A8858FCBB3EB70112B6745C937137EDC2D45A96BC
Magika txt
Reporter zbetcheckin
Tags:CVE-2017-11882 RemcosRAT rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
150
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
904af9fb7e5bee74577f430af1080585
Verdict:
No threats detected
Analysis date:
2024-10-13 05:28:11 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/42941c51-d0ac-4696-a7d9-c53d91a664c8

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

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=670b5a631d4ef219fa61e36e
Tags:
Autorun Autoit Emotet
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/98bcb2a98c5347e4409349f1605a7883a40a541cffc4aa62bf7c77b5160cdd20/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/670b5a623190377d5773c147/reports/d8a60191-af68-4b64-b440-19cacce0093b/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/98bcb2a98c5347e4409349f1605a7883a40a541cffc4aa62bf7c77b5160cdd20
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1532435
Signature
Antivirus / Scanner detection for submitted sample
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Detected Remcos RAT
Document exploit detected (process start blacklist hit)
Drops VBS files to the startup folder
Found malware configuration
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
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)
Searches for Windows Mail specific files
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: Remcos
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1532435 Sample: WC5Gv13cOQ.rtf Startdate: 13/10/2024 Architecture: WINDOWS Score: 100 71 Suricata IDS alerts for network traffic 2->71 73 Found malware configuration 2->73 75 Malicious sample detected (through community Yara rule) 2->75 77 21 other signatures 2->77 10 WINWORD.EXE 291 13 2->10         started        12 wscript.exe 1 2->12         started        process3 signatures4 15 EQNEDT32.EXE 12 10->15         started        20 EQNEDT32.EXE 10->20         started        103 Windows Scripting host queries suspicious COM object (likely to drop second stage) 12->103 22 name.exe 2 12->22         started        process5 dnsIp6 59 104.168.7.25, 49161, 80 AS-COLOCROSSINGUS United States 15->59 45 C:\Users\user\AppData\Roaming\taskhostw.exe, PE32 15->45 dropped 47 C:\Users\user\AppData\...\taskhostw[1].exe, PE32 15->47 dropped 61 Office equation editor establishes network connection 15->61 63 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 15->63 24 taskhostw.exe 6 15->24         started        65 Binary is likely a compiled AutoIt script file 22->65 67 Writes to foreign memory regions 22->67 69 Maps a DLL or memory area into another process 22->69 28 svchost.exe 22->28         started        file7 signatures8 process9 file10 49 C:\Users\user\AppData\Local\...\name.exe, PE32 24->49 dropped 95 Multi AV Scanner detection for dropped file 24->95 97 Binary is likely a compiled AutoIt script file 24->97 99 Machine Learning detection for dropped file 24->99 30 name.exe 3 24->30         started        101 Detected Remcos RAT 28->101 signatures11 process12 file13 51 C:\Users\user\AppData\Roaming\...\name.vbs, data 30->51 dropped 105 Multi AV Scanner detection for dropped file 30->105 107 Binary is likely a compiled AutoIt script file 30->107 109 Machine Learning detection for dropped file 30->109 111 4 other signatures 30->111 34 svchost.exe 3 10 30->34         started        signatures14 process15 dnsIp16 53 geoplugin.net 34->53 55 geoplugin.net 178.237.33.50, 49163, 80 ATOM86-ASATOM86NL Netherlands 34->55 57 107.173.4.16, 2404, 49162, 49164 AS-COLOCROSSINGUS United States 34->57 79 System process connects to network (likely due to code injection or exploit) 34->79 81 Contains functionality to bypass UAC (CMSTPLUA) 34->81 83 Detected Remcos RAT 34->83 85 7 other signatures 34->85 38 svchost.exe 1 34->38         started        41 svchost.exe 1 34->41         started        43 svchost.exe 11 34->43         started        signatures17 process18 signatures19 87 Tries to steal Instant Messenger accounts or passwords 38->87 89 Tries to steal Mail credentials (via file / registry access) 38->89 91 Searches for Windows Mail specific files 38->91 93 Tries to harvest and steal browser information (history, passwords, etc) 41->93
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/98bcb2a98c5347e4409349f1605a7883a40a541cffc4aa62bf7c77b5160cdd20
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/98bcb2a98c5347e4409349f1605a7883a40a541cffc4aa62bf7c77b5160cdd20/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-10-09 23:42:37 UTC
File Type:
Document
Extracted files:
4
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tc6lfkmmknd6iqetjhywawtyqosauva477ckuyv7pr33kfqm3uqa._file
Verdict:
malicious
Label(s):
unknown_loader_036
Create hunting rule
remcos
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:newest collection discovery rat
Link:
https://tria.ge/reports/241013-f5z23svhqn/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
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
System Location Discovery: System Language Discovery
Drops file in Windows directory
AutoIT Executable
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Drops startup file
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Malware Config
C2 Extraction:
107.173.4.16:2404
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/761556c7-9d6f-479d-84df-d683386dcc5a
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/98bcb2a98c5347e4409349f1605a7883a40a541cffc4aa62bf7c77b5160cdd20

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

Rich Text Format (RTF) rtf 98bcb2a98c5347e4409349f1605a7883a40a541cffc4aa62bf7c77b5160cdd20

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3232548/

Comments


Avatar
zbet commented on 2024-10-13 05:27:21 UTC

url : hxxp://104.168.7.25/xampp/de/nicefornewthingstogetmebackwithnewthinsgs____________seeethedifferentwithnewthingstobeinlinefor________getmebackwithnewthingstobenexttime.doc