MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2562b562a8f29256cf16403c893b482838edee61e631639c39a705237046d225. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2562b562a8f29256cf16403c893b482838edee61e631639c39a705237046d225
SHA3-384 hash: 21aa3d3141e117c98e82ce2ae2a88c1e5117aed2093f938cac6a6ba23f9e89a81421224cbf57d8327c77fd7543a35398
SHA1 hash: ca62d1a84fc88a61ab5ec5162219f847ffd4ab70
MD5 hash: 28f01b474be6aeb345aaca18388a3ad6
humanhash: autumn-lemon-king-lima
File name:28f01b474be6aeb345aaca18388a3ad6
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:73'565 bytes
First seen:2024-04-16 07:00:30 UTC
Last seen:2024-04-16 07:29:31 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 1536:OOE//90vZ4xj50yduAGFbN2ftcO1aWKW/H6yzAZF94BPU:S90Kxj50IuAeQft/1aWKW/ayAt4NU
TLSH T1E2739B6EE70F0964DF55977B434A4B4A06FCB33DB28500A139BC973437AD82E4A6297C
Reporter zbetcheckin
Tags:CVE-2017-11882 RemcosRAT rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
123
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2562b562a8f29256cf16403c893b482838edee61e631639c39a705237046d225.rtf
Verdict:
No threats detected
Analysis date:
2024-04-16 07:01:39 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1ac216eb-fecf-4acf-ac21-2ce4e98199b9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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
Possible injection to a system process
Connection attempt by exploiting the app vulnerability
Creating a process from a recently created file
Launching a file downloaded from the Internet
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/2562b562a8f29256cf16403c893b482838edee61e631639c39a705237046d225/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit shellcode
Link:
https://www.filescan.io/uploads/661e222e54bafb7d21ce5bb4/reports/1d3c2976-fe73-42c7-a380-168296db5720/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/2562b562a8f29256cf16403c893b482838edee61e631639c39a705237046d225
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/1426507
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Connects to a pastebin service (likely for C&C)
Contains functionality to bypass UAC (CMSTPLUA)
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
Creates autostart registry keys with suspicious values (likely registry only malware)
Delayed program exit found
Detected Remcos RAT
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 domain / URL
Multi AV Scanner detection for submitted file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Shellcode detected
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: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Powershell download and load assembly
Sigma detected: Powershell download payload from hardcoded c2 list
Sigma detected: Remcos
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
Snort IDS alert for network traffic
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 Generic Downloader
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1426507 Sample: 2Qvb8zqdPF.rtf Startdate: 16/04/2024 Architecture: WINDOWS Score: 100 58 Snort IDS alert for network traffic 2->58 60 Multi AV Scanner detection for domain / URL 2->60 62 Found malware configuration 2->62 64 27 other signatures 2->64 10 WINWORD.EXE 291 15 2->10         started        13 wscript.exe 2->13         started        16 wscript.exe 2->16         started        process3 file4 42 ~WRF{6E2F9137-580F...5-36174573357F}.tmp, Composite 10->42 dropped 18 EQNEDT32.EXE 12 10->18         started        94 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->94 signatures5 process6 dnsIp7 44 192.3.95.218, 49161, 49165, 80 AS-COLOCROSSINGUS United States 18->44 40 C:\Users\user\...\loverskissingforimage.vbs, Unicode 18->40 dropped 76 Office equation editor establishes network connection 18->76 78 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 18->78 23 wscript.exe 11 18->23         started        file8 signatures9 process10 dnsIp11 52 paste.ee 23->52 54 104.21.84.67, 443, 49162 CLOUDFLARENETUS United States 23->54 80 System process connects to network (likely due to code injection or exploit) 23->80 82 Suspicious powershell command line found 23->82 84 Wscript starts Powershell (via cmd or directly) 23->84 88 5 other signatures 23->88 27 powershell.exe 4 23->27         started        signatures12 86 Connects to a pastebin service (likely for C&C) 52->86 process13 signatures14 90 Suspicious powershell command line found 27->90 92 Suspicious execution chain found 27->92 30 powershell.exe 13 6 27->30         started        process15 dnsIp16 56 uploaddeimagens.com.br 172.67.215.45, 443, 49163, 49164 CLOUDFLARENETUS United States 30->56 96 Suspicious powershell command line found 30->96 98 Creates autostart registry keys with suspicious values (likely registry only malware) 30->98 100 Writes to foreign memory regions 30->100 102 Injects a PE file into a foreign processes 30->102 34 RegAsm.exe 3 10 30->34         started        38 powershell.exe 5 30->38         started        signatures17 process18 dnsIp19 46 rmcnewlistening.duckdns.org 34->46 48 rmcnewlistening.duckdns.org 62.171.140.235, 14645, 49166 CONTABODE United Kingdom 34->48 50 geoplugin.net 178.237.33.50, 49167, 80 ATOM86-ASATOM86NL Netherlands 34->50 66 Contains functionality to bypass UAC (CMSTPLUA) 34->66 68 Detected Remcos RAT 34->68 70 Contains functionality to steal Chrome passwords or cookies 34->70 74 3 other signatures 34->74 signatures20 72 Uses dynamic DNS services 46->72
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/2562b562a8f29256cf16403c893b482838edee61e631639c39a705237046d225
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2562b562a8f29256cf16403c893b482838edee61e631639c39a705237046d225/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-04-15 15:35:56 UTC
File Type:
Document
Extracted files:
4
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=evrlkyvi6kjfntywia6iso2ifa4o33tb4yywhhbzu4csg4cg2isq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost persistence rat
Link:
https://tria.ge/reports/240416-hs7bqsbg75/
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 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
Drops file in System32 directory
Suspicious use of SetThreadContext
Adds Run key to start application
Blocklisted process makes network request
Remcos
Malware Config
C2 Extraction:
rmcnewlistening.duckdns.org:14645
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2562b562a8f2/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/2562b562a8f29256cf16403c893b482838edee61e631639c39a705237046d225

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 2562b562a8f29256cf16403c893b482838edee61e631639c39a705237046d225

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2813780/

Comments


Avatar
zbet commented on 2024-04-16 07:00:31 UTC

url : hxxp://192.3.95.218/100/gmmp/wetrytosexwithhertrulyfromtheheartbecausesheisverybeautigfulgirlwholikesxwthmefromtheheart___toundersadhowmuchiwantherforexsheisvey.doc