MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 04714ec4a9cfa0304d2de5012ae1081850d2a2b080ad68831ba2c8385bda4d01. 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 1 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 04714ec4a9cfa0304d2de5012ae1081850d2a2b080ad68831ba2c8385bda4d01
SHA3-384 hash: d3e788bfb039f7e1589806570567ba67f431ff3496e9bfceedbd9e525d463fd90b219e72d3bed0abfc8dc1a5201c448e
SHA1 hash: 4a6bef6dba00cc872e10b66b00786ace03e6443a
MD5 hash: 7279ab0fbc0a02d8b6966ed3cdf67aca
humanhash: arkansas-hotel-green-mars
File name:7279ab0fbc0a02d8b6966ed3cdf67aca
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:80'092 bytes
First seen:2024-07-29 14:13:18 UTC
Last seen:2024-07-29 16:34:49 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 384:NfDP6/ThqhsKJtWLrAz0HKrxSddu1rMuY5XrSd0Okp4xWt:Nz6/TUGKcPrKkPuxM1XrSLM
TLSH T15C73DF48E78F01A4CF54AA37465A0A8845FCB77EF70115B630AC93713BECC2E996557C
Reporter zbetcheckin
Tags:CVE-2017-11882 RemcosRAT rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
137
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
7279ab0fbc0a02d8b6966ed3cdf67aca
Verdict:
No threats detected
Analysis date:
2024-07-29 14:15:25 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/5b851ebd-9f9f-4863-a943-2b0abe7f4984

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66a7a3b23ee5253b89e5e1e5
Tags:
Execution Exploit Generic Network Office Stealth Obfuscated
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
Connection attempt by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/04714ec4a9cfa0304d2de5012ae1081850d2a2b080ad68831ba2c8385bda4d01/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/66a7a3b84c5c17942a7fa37a/reports/8025a1d2-3f5a-4339-a9f6-9cde4c4fa787/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/04714ec4a9cfa0304d2de5012ae1081850d2a2b080ad68831ba2c8385bda4d01
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1484115
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 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
Found potential equation exploit (CVE-2017-11882)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Office drops RTF file
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: Remcos
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
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 UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1484115 Sample: 4vzwJTZbwT.rtf Startdate: 29/07/2024 Architecture: WINDOWS Score: 100 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 Antivirus detection for URL or domain 2->63 65 22 other signatures 2->65 9 WINWORD.EXE 336 17 2->9         started        process3 file4 29 C:\Users\...\~WRD0000.tmp:Zone.Identifier, ASCII 9->29 dropped 31 C:\Users\user\Desktop\~WRD0000.tmp, Rich 9->31 dropped 33 C:\Users\user\Desktop\4vzwJTZbwT.rtf (copy), Rich 9->33 dropped 35 ~WRF{1F49877E-68B7...1-09D774B073D0}.tmp, Composite 9->35 dropped 12 EQNEDT32.EXE 12 9->12         started        process5 dnsIp6 49 172.245.123.11, 49163, 49165, 80 AS-COLOCROSSINGUS United States 12->49 39 C:\...\weseethesimplethingsalwaystog.vBS, Unicode 12->39 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 17 wscript.exe 1 12->17         started        file7 signatures8 process9 signatures10 51 Suspicious powershell command line found 17->51 53 Wscript starts Powershell (via cmd or directly) 17->53 55 Obfuscated command line found 17->55 57 3 other signatures 17->57 20 powershell.exe 12 5 17->20         started        process11 dnsIp12 41 198.46.176.133, 49164, 80 AS-COLOCROSSINGUS United States 20->41 67 Writes to foreign memory regions 20->67 69 Suspicious execution chain found 20->69 71 Injects a PE file into a foreign processes 20->71 24 RegAsm.exe 3 13 20->24         started        signatures13 process14 dnsIp15 43 tochisglobal.ddns.net 24->43 45 tochisglobal.ddns.net 103.253.17.222, 49166, 6426 WIFIKU-AS-IDPTWifikuIndonesiaID unknown 24->45 47 geoplugin.net 178.237.33.50, 49167, 80 ATOM86-ASATOM86NL Netherlands 24->47 37 C:\ProgramData\remcos\logs.dat, data 24->37 dropped 73 Contains functionality to bypass UAC (CMSTPLUA) 24->73 75 Detected Remcos RAT 24->75 77 Contains functionality to steal Chrome passwords or cookies 24->77 81 4 other signatures 24->81 file16 79 Uses dynamic DNS services 43->79 signatures17
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/04714ec4a9cfa0304d2de5012ae1081850d2a2b080ad68831ba2c8385bda4d01
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/04714ec4a9cfa0304d2de5012ae1081850d2a2b080ad68831ba2c8385bda4d01/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-07-29 14:14:07 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=aryu5rfjz6qdatjn4uasvyiidbinfivqqcwwray3uledqw62juaq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/240729-rjzpzawdqg/
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
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ce524cd7-ed3d-4b05-add1-968bdf93eab4
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/04714ec4a9cfa0304d2de5012ae1081850d2a2b080ad68831ba2c8385bda4d01

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

Rich Text Format (RTF) rtf 04714ec4a9cfa0304d2de5012ae1081850d2a2b080ad68831ba2c8385bda4d01

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3077181/

Comments


Avatar
zbet commented on 2024-07-29 14:13:19 UTC

url : hxxp://172.245.123.11/47/eg/seethedrinkingwatereverythweretoundesandhowmuchgreatrainingisgoingeverywerenobodyunderstandthegreat_______newgirlfrndsheismygirl.doc