MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e24f9280b453e5262a8f191193f4bf2c249273d30b32dd19e924e56f7e02f057. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e24f9280b453e5262a8f191193f4bf2c249273d30b32dd19e924e56f7e02f057
SHA3-384 hash: ce7bc0cf17b32bffa2d34f3e837e284e3d45416c30ac965a1e427ab7bc8739e29663ba73cd092f2724bac200caa72afd
SHA1 hash: d472611b9c4185f4dad80143c6c46cb3a3047779
MD5 hash: fa106001a7cf2deb09192898ba82b50f
humanhash: nine-happy-venus-nineteen
File name:fa106001a7cf2deb09192898ba82b50f
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:26'501 bytes
First seen:2023-03-13 12:38:08 UTC
Last seen:2023-03-13 14:30:27 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:LEohQfFWWeZqbo8PC6uucJIOFMzGcAYl+CxjfbsredELLyxWlN:IoheWnIKIicYC16rLaWf
TLSH T130C214565B884C61E26AF8BB834EE00E597CF52630C245C4BDDDE2647B7D10E0B7B2B8
Reporter zbetcheckin
Tags:CVE-2017-11882 RemcosRAT rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
123
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
USD23.026,90 (Tiller Order).docx
Verdict:
Malicious activity
Analysis date:
2023-03-13 12:03:38 UTC
Tags:
opendir exploit cve-2017-11882 loader rat remcos keylogger stealer
Link:
https://app.any.run/tasks/396971af-2472-46b6-be64-c9ce3a4c6ed1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Searching for synchronization primitives
Launching a process
Creating a window
Creating a file
Сreating synchronization primitives
Creating a file in the %temp% directory
Setting a keyboard event handler
DNS request
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a recently created process
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/e24f9280b453e5262a8f191193f4bf2c249273d30b32dd19e924e56f7e02f057/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
CVE-2017-11882 exploit
Link:
https://www.filescan.io/uploads/640f196756d2bc8d80b72a7d/reports/20c23dd3-4b02-4ab2-a3dc-37fa85b9e9be/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/e24f9280b453e5262a8f191193f4bf2c249273d30b32dd19e924e56f7e02f057
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1192509
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Delayed program exit found
Drops PE files to the user root directory
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
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)
Searches for Windows Mail specific files
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Remcos
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)
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: 825424 Sample: 2abeVJ5jSF.rtf Startdate: 13/03/2023 Architecture: WINDOWS Score: 100 53 Multi AV Scanner detection for domain / URL 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 Antivirus detection for URL or domain 2->57 59 14 other signatures 2->59 9 EQNEDT32.EXE 12 2->9         started        14 WINWORD.EXE 336 20 2->14         started        16 EQNEDT32.EXE 2->16         started        process3 dnsIp4 47 143.42.136.20, 49171, 80 PANDGUS United States 9->47 41 C:\Users\user\AppData\Local\...\vbc[1].exe, PE32 9->41 dropped 43 C:\Users\Public\vbc.exe, PE32 9->43 dropped 71 Office equation editor establishes network connection 9->71 73 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 9->73 18 vbc.exe 19 9->18         started        file5 signatures6 process7 file8 39 C:\Users\user\AppData\Local\Temp\ryiixl.exe, PE32 18->39 dropped 61 Multi AV Scanner detection for dropped file 18->61 22 ryiixl.exe 18->22         started        signatures9 process10 signatures11 63 Antivirus detection for dropped file 22->63 65 Multi AV Scanner detection for dropped file 22->65 67 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 22->67 69 4 other signatures 22->69 25 ryiixl.exe 2 13 22->25         started        process12 dnsIp13 49 vcv.mastercoa.co 192.30.89.27, 49172, 49173, 8489 CLOUDSINGULARITYCA Canada 25->49 51 geoplugin.net 178.237.33.50, 49174, 80 ATOM86-ASATOM86NL Netherlands 25->51 45 C:\ProgramData\remcos\logs.dat, data 25->45 dropped 75 Maps a DLL or memory area into another process 25->75 77 Installs a global keyboard hook 25->77 30 ryiixl.exe 1 25->30         started        33 ryiixl.exe 1 25->33         started        35 ryiixl.exe 2 25->35         started        37 ryiixl.exe 25->37         started        file14 signatures15 process16 signatures17 79 Tries to steal Instant Messenger accounts or passwords 30->79 81 Tries to steal Mail credentials (via file / registry access) 30->81 83 Searches for Windows Mail specific files 30->83 85 Tries to harvest and steal browser information (history, passwords, etc) 33->85
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e24f9280b453e5262a8f191193f4bf2c249273d30b32dd19e924e56f7e02f057/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-03-13 12:39:05 UTC
File Type:
Document
Extracted files:
4
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4jhzfafukpssmkupdeizh5f7fqsje46tbmzn2gpjetsw67qc6blq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection rat spyware stealer
Link:
https://tria.ge/reports/230313-pvlw5sad35/
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 behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Uses the VBS compiler for execution
Blocklisted process makes network request
Downloads MZ/PE file
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
vcv.mastercoa.co:8489
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e24f9280b453/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/e24f9280b453e5262a8f191193f4bf2c249273d30b32dd19e924e56f7e02f057

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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
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 e24f9280b453e5262a8f191193f4bf2c249273d30b32dd19e924e56f7e02f057

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2568545/

Comments


Avatar
zbet commented on 2023-03-13 12:38:13 UTC

url : hxxp://143.42.136.20/80................80...................80.doc