MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9a86f5ec47aaa7ae34e71528ca34e75fc806064aa3dc664bbee2db7b35b7b6b2. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9a86f5ec47aaa7ae34e71528ca34e75fc806064aa3dc664bbee2db7b35b7b6b2
SHA3-384 hash: a240ce64b44235e5e8cf93385bb736ce6620110dd3f8edafec805ffa40af143f385351d21596996d5fef0e6457cc7d2e
SHA1 hash: 4065da2e12db9c926a184801dd5e5de7444b3027
MD5 hash: a819430cdd5da2c289f594ceac0f0035
humanhash: triple-oscar-spaghetti-lion
File name:SecuriteInfo.com.Exploit.CVE-2017-11882.123.14325.16174
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:79'246 bytes
First seen:2024-07-23 10:23:19 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:VEx5bD0uZqYr8pB349EFqdWbUUejmpYpEkI:mxdD0bhpZQWbUUeqYqn
TLSH T18873CF88E78F05A5CF54A737022B4A8985FCBB3EF60106B534AC936537EDC2E44A587C
Reporter SecuriteInfoCom
Tags:CVE-2017-11882 RemcosRAT rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
132
Origin country :
FR FR
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Exploit.CVE-2017-11882.123.14325.16174.UNOFFICIAL
Create hunting rule

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:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=669f84c32f6eaff4b90f4b3d
Tags:
Execution Exploit Generic Infostealer Network Office Stealth
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
DNS request
Connection attempt
Sending a custom TCP request
Creating a process with a hidden window
Launching a service
Connection attempt 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/9a86f5ec47aaa7ae34e71528ca34e75fc806064aa3dc664bbee2db7b35b7b6b2/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/669f84cc7b9add553eda50b6/reports/aee8ca3d-8ebd-45ad-873a-5d7f770d61c3/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/9a86f5ec47aaa7ae34e71528ca34e75fc806064aa3dc664bbee2db7b35b7b6b2
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1479258
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
Delayed program exit found
Document exploit detected (process start blacklist hit)
Found malware configuration
Injects a PE file into a foreign processes
Installs new ROOT certificates
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: HackTool - CrackMapExec PowerShell Obfuscation
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
Uses dynamic DNS services
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected VBS Downloader Generic
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1479258 Sample: SecuriteInfo.com.Exploit.CV... Startdate: 23/07/2024 Architecture: WINDOWS Score: 100 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 54 19 other signatures 2->54 9 WINWORD.EXE 291 13 2->9         started        process3 process4 11 EQNEDT32.EXE 12 9->11         started        16 EQNEDT32.EXE 9->16         started        dnsIp5 46 46.183.222.11, 49161, 49164, 80 DATACLUBLV Latvia 11->46 30 C:\Users\...\crosscheckupdationsonher.vBS, Unicode 11->30 dropped 32 C:\Users\...\crosscheckupdationsonhere[1].gif, Unicode 11->32 dropped 80 Office equation editor establishes network connection 11->80 82 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 11->82 18 wscript.exe 11 11->18         started        file6 signatures7 process8 dnsIp9 34 pastecode.dev 18->34 36 pastecode.dev 172.66.40.229, 443, 49162 CLOUDFLARENETUS United States 18->36 56 System process connects to network (likely due to code injection or exploit) 18->56 58 Suspicious powershell command line found 18->58 60 Wscript starts Powershell (via cmd or directly) 18->60 62 5 other signatures 18->62 22 powershell.exe 12 5 18->22         started        signatures10 process11 dnsIp12 38 198.46.176.133, 49163, 80 AS-COLOCROSSINGUS United States 22->38 64 Writes to foreign memory regions 22->64 66 Suspicious execution chain found 22->66 68 Injects a PE file into a foreign processes 22->68 26 RegAsm.exe 2 10 22->26         started        signatures13 process14 dnsIp15 40 windowsssjunedd.duckdns.org 26->40 42 windowsssjunedd.duckdns.org 162.251.122.70, 45889, 49165 UNREAL-SERVERSUS Canada 26->42 44 geoplugin.net 178.237.33.50, 49166, 80 ATOM86-ASATOM86NL Netherlands 26->44 70 Contains functionality to steal Chrome passwords or cookies 26->70 72 Contains functionality to register a low level keyboard hook 26->72 74 Contains functionality to steal Firefox passwords or cookies 26->74 76 Delayed program exit found 26->76 signatures16 78 Uses dynamic DNS services 40->78
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/9a86f5ec47aaa7ae34e71528ca34e75fc806064aa3dc664bbee2db7b35b7b6b2
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/9a86f5ec47aaa7ae34e71528ca34e75fc806064aa3dc664bbee2db7b35b7b6b2/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-07-22 12:35:20 UTC
File Type:
Document
Extracted files:
4
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tkdpl3chvkt24nhhcuumunhhl7eambskupogms564lnxwnnxw2za._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
execution
Link:
https://tria.ge/reports/240723-mfdaca1ckh/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
Drops file in Windows directory
Drops file in System32 directory
Blocklisted process makes network request
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/bc344f03-d16e-48d6-ae7c-ad73a14d464f
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/9a86f5ec47aa/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/9a86f5ec47aaa7ae34e71528ca34e75fc806064aa3dc664bbee2db7b35b7b6b2

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 9a86f5ec47aaa7ae34e71528ca34e75fc806064aa3dc664bbee2db7b35b7b6b2

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3062555/
  
Delivery method
Distributed via web download

Comments