MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 56544ce65e7d3e9ad2a3559c3aaff562bc8c1573609c6d1210baeed5f7ddbaa8. 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: 56544ce65e7d3e9ad2a3559c3aaff562bc8c1573609c6d1210baeed5f7ddbaa8
SHA3-384 hash: 3958dfd74a790953949e5162477cfb01622985a688869ba9d2a8412facd5f636c9cc0b62f085f663377a1194c34a5e24
SHA1 hash: 59e32e807f54730015a0cc24b4144abf60655f18
MD5 hash: d55328b7b87c986b84e60450453840c1
humanhash: dakota-robert-stream-oven
File name:ghj.ghj.ghj.ghj.doc
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:112'238 bytes
First seen:2024-07-10 07:22:07 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 384:ad9ZZ1FSuiu+Gz578L93y2MBeVWSCyh1ZyUtjBCiTj47teh6GyrU98/R9ABUBE//:anN+oF0Vy2z0f277P6c8gBKC/
TLSH T117B336A9D38F44A5CF98A33702670A4986FCB73EB30441B6705C937137AE92D49658BC
Reporter NDA0E
Tags:CVE-2017-11882 doc RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
404
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
56544ce65e7d3e9ad2a3559c3aaff562bc8c1573609c6d1210baeed5f7ddbaa8.doc
Verdict:
No threats detected
Analysis date:
2024-07-10 07:26:54 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/861be711-bd6c-4c90-ae7f-972facda4626

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

TwinWave.EvilRTF.ObfusRunAway.20240409.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=668e36d7ac0995ce2cbb5756win7simulatehigh_evasion
Tags:
Stealth Agent
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/56544ce65e7d3e9ad2a3559c3aaff562bc8c1573609c6d1210baeed5f7ddbaa8/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
embedequation exploit masquerade
Link:
https://www.filescan.io/uploads/668e36d87a9d1652006faaf0/reports/3295a752-4dd0-4d7c-8c2c-5dea9ddde335/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/56544ce65e7d3e9ad2a3559c3aaff562bc8c1573609c6d1210baeed5f7ddbaa8
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=7987694a-e613-4046-97da-efadeffd661c
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos, DarkTortilla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1470641
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
Delayed program exit found
Detected Remcos RAT
Document exploit detected (process start blacklist hit)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
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)
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
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected DarkTortilla Crypter
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1470641 Sample: ghj.ghj.ghj.ghj.doc Startdate: 10/07/2024 Architecture: WINDOWS Score: 100 47 Multi AV Scanner detection for domain / URL 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 20 other signatures 2->53 8 WINWORD.EXE 291 13 2->8         started        process3 process4 10 EQNEDT32.EXE 12 8->10         started        15 EQNEDT32.EXE 8->15         started        dnsIp5 37 139.99.220.222, 49164, 80 OVHFR Canada 10->37 27 C:\Users\user\AppData\Roaming\igcc.exe, PE32 10->27 dropped 29 C:\Users\user\AppData\Local\...\igcc[1].exe, PE32 10->29 dropped 65 Office equation editor establishes network connection 10->65 67 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->67 17 igcc.exe 1 7 10->17         started        file6 signatures7 process8 signatures9 39 Multi AV Scanner detection for dropped file 17->39 41 Machine Learning detection for dropped file 17->41 43 Writes to foreign memory regions 17->43 45 3 other signatures 17->45 20 AddInProcess32.exe 3 13 17->20         started        process10 dnsIp11 31 sembe.duckdns.org 20->31 33 sembe.duckdns.org 194.187.251.115, 14645, 49165 M247GB United Kingdom 20->33 35 geoplugin.net 178.237.33.50, 49166, 80 ATOM86-ASATOM86NL Netherlands 20->35 25 C:\Users\user\AppData\Local\Temp\...\nots.dat, data 20->25 dropped 55 Contains functionality to bypass UAC (CMSTPLUA) 20->55 57 Detected Remcos RAT 20->57 59 Contains functionality to steal Chrome passwords or cookies 20->59 63 4 other signatures 20->63 file12 61 Uses dynamic DNS services 31->61 signatures13
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/56544ce65e7d3e9ad2a3559c3aaff562bc8c1573609c6d1210baeed5f7ddbaa8
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/56544ce65e7d3e9ad2a3559c3aaff562bc8c1573609c6d1210baeed5f7ddbaa8/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-07-09 10:47:21 UTC
File Type:
Document
Extracted files:
4
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kzkezzs6pu7jvuvdkwodvl7vmk6iyfltmcog2eqqxlxnl565xkua._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost rat
Link:
https://tria.ge/reports/240710-h7srwswekh/
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
Drops file in Windows directory
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Remcos
Malware Config
C2 Extraction:
sembe.duckdns.org:14645
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/68aa08a5-e474-491f-a3ef-30bbcec17926
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/56544ce65e7d3e9ad2a3559c3aaff562bc8c1573609c6d1210baeed5f7ddbaa8

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

Word file doc 56544ce65e7d3e9ad2a3559c3aaff562bc8c1573609c6d1210baeed5f7ddbaa8

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2947978/

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