MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e72ffa4cc2aa4b52ec8affc282651fb4698f143809a46b2eb99bebf1980fa5f1. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e72ffa4cc2aa4b52ec8affc282651fb4698f143809a46b2eb99bebf1980fa5f1
SHA3-384 hash: 9e20df8eee6313bce86db4185a765cfe0c40f6c98abc5885ba15227360b40bafdd563e62c891c4a473d548b94a858800
SHA1 hash: 314294148e85848670981a3e9d7ec6d140e7a798
MD5 hash: a70a0aabb5f38bc828e612936dbb0093
humanhash: avocado-blossom-carpet-xray
File name:creenscreenniceforentirethingswithmultiplegreatsessioncoming____________freesectiononnicebacjkendprocesshacppeningentiretime_____________seethebestthingswithgreatnew.doc
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:258'796 bytes
First seen:2024-12-04 12:06:16 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 3072:8lk5A/Ip1ax3+zl4FnsSI95N8fZZciMj5DOe/L2qnt:8lg4uqC8fZZciMj5D7/L2qnt
TLSH T18344686AE34F0915DF54977B434B8A4A05FCB73EB28140A079AC977437EDC2E4A6287C
Magika rtf
Reporter abuse_ch
Tags:CVE-2017-11882 doc RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
450
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
https://short.ruksk.com/fQALpF?&lipstick=abhorrent&trout=innate&waterskiing=decisive&milkshake=friendly&skullduggery
Verdict:
No threats detected
Analysis date:
2024-12-04 09:03:12 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/97bee886-d821-4a27-a18d-3eb481159ac8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/msword
Has a screenshot:
False
Contains macros:
False
Detection(s):
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:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=675046e912e85e185e75a59c
Tags:
office virus gates
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/e72ffa4cc2aa4b52ec8affc282651fb4698f143809a46b2eb99bebf1980fa5f1/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit obfuscated shellcode
Link:
https://www.filescan.io/uploads/675045ede17bdb6c4d96ba41/reports/4d9756b5-e6e0-4fac-9dcd-142dfb333759/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/e72ffa4cc2aa4b52ec8affc282651fb4698f143809a46b2eb99bebf1980fa5f1
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=c49f26e6-8692-438d-9959-048161f27a3a
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/1568210
Signature
Antivirus / Scanner detection for submitted sample
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)
Found malware configuration
Injects a PE file into a foreign processes
Installs new ROOT certificates
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
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)
Searches for Windows Mail specific files
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: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
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)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
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
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1568210 Sample: greatnew.doc Startdate: 04/12/2024 Architecture: WINDOWS Score: 100 51 Suricata IDS alerts for network traffic 2->51 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 20 other signatures 2->57 10 WINWORD.EXE 291 13 2->10         started        process3 process4 12 EQNEDT32.EXE 12 10->12         started        17 EQNEDT32.EXE 10->17         started        dnsIp5 49 69.48.207.104, 49163, 49165, 80 SRS-6-Z-7381US United States 12->49 37 newbreakthroughnee...gatewaythingsto.vbS, Unicode 12->37 dropped 83 Office equation editor establishes network connection 12->83 85 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 12->85 19 wscript.exe 1 12->19         started        file6 signatures7 process8 signatures9 59 Suspicious powershell command line found 19->59 61 Wscript starts Powershell (via cmd or directly) 19->61 63 Windows Scripting host queries suspicious COM object (likely to drop second stage) 19->63 65 Suspicious execution chain found 19->65 22 powershell.exe 12 5 19->22         started        process10 dnsIp11 39 cloudinary.map.fastly.net 151.101.193.137, 443, 49164 FASTLYUS United States 22->39 41 res.cloudinary.com 22->41 67 Installs new ROOT certificates 22->67 69 Writes to foreign memory regions 22->69 71 Injects a PE file into a foreign processes 22->71 26 CasPol.exe 3 10 22->26         started        signatures12 process13 dnsIp14 43 drecolombus.duckdns.org 26->43 45 drecolombus.duckdns.org 31.13.224.72, 2429, 49166, 49167 SARNICA-ASBG Bulgaria 26->45 47 geoplugin.net 178.237.33.50, 49168, 80 ATOM86-ASATOM86NL Netherlands 26->47 73 Contains functionality to bypass UAC (CMSTPLUA) 26->73 75 Detected Remcos RAT 26->75 77 Tries to steal Mail credentials (via file registry) 26->77 81 7 other signatures 26->81 30 CasPol.exe 1 26->30         started        33 CasPol.exe 1 26->33         started        35 CasPol.exe 11 26->35         started        signatures15 79 Uses dynamic DNS services 43->79 process16 signatures17 87 Tries to steal Instant Messenger accounts or passwords 30->87 89 Tries to steal Mail credentials (via file / registry access) 30->89 91 Searches for Windows Mail specific files 30->91 93 Tries to harvest and steal browser information (history, passwords, etc) 33->93
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/e72ffa4cc2aa4b52ec8affc282651fb4698f143809a46b2eb99bebf1980fa5f1
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e72ffa4cc2aa4b52ec8affc282651fb4698f143809a46b2eb99bebf1980fa5f1/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-12-04 12:07:07 UTC
File Type:
Document
Extracted files:
5
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=44x7utgcvjfvf3ek77biezi7wruy6fbybgsgwlvztpv7dgapuxyq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
discovery execution
Link:
https://tria.ge/reports/241204-paay5sznej/
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
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Drops file in System32 directory
Command and Scripting Interpreter: PowerShell
Blocklisted process makes network request
Malware Config
Dropper Extraction:
https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/a68a0e1c-ccd7-4401-981c-1caf34ab6ee6
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/e72ffa4cc2aa4b52ec8affc282651fb4698f143809a46b2eb99bebf1980fa5f1

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

Word file doc e72ffa4cc2aa4b52ec8affc282651fb4698f143809a46b2eb99bebf1980fa5f1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3319588/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3319789/

Comments