MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4c92e0337b78ef707dd9a448bdb2c52b803af673a5628154ea7bc6492e182342. 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
| SHA256 hash: | 4c92e0337b78ef707dd9a448bdb2c52b803af673a5628154ea7bc6492e182342 |
|---|---|
| SHA3-384 hash: | 2752a0b72f4aedb6365e7d779dc7b55fe86fafbe15e753f518fb8f95c3b790fa9b86c7f0e4b75ac113ade524b88c9690 |
| SHA1 hash: | a845394321ec510cb5112ca1d0e38415f186f1f2 |
| MD5 hash: | e2472b7b35b13c00ae9bdf975d0c97a9 |
| humanhash: | monkey-oven-crazy-floor |
| File name: | e2472b7b35b13c00ae9bdf975d0c97a9 |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 81'196 bytes |
| First seen: | 2024-04-29 11:02:20 UTC |
| Last seen: | 2024-04-29 11:44:34 UTC |
| File type: |  rtf |
| MIME type: | text/rtf |
| ssdeep | 1536:gM9Z5NNuBlXT6zPbIV7vgZ+g9SBoF/NAwzobPR+kgh1Zbz/8ywaHG6/ouv6pfT7t:gy5NkBlyMV7vgfSBY/NAwEDR9yv8y7Ha |
| TLSH | T1A283D96DE74F0A25DF52A677435A4E4909FCB33DB38500B179AC87343BAD82E466287C |
| Reporter |  zbetcheckin |
| Tags: | CVE-2017-11882 RemcosRAT rtf |
Intelligence
File Origin
# of uploads :
2
# of downloads :
113
Origin country :
FRVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4c92e0337b78ef707dd9a448bdb2c52b803af673a5628154ea7bc6492e182342.rtf
Verdict:
Suspicious activity
Analysis date:
2024-04-29 11:03:06 UTC
Tags:
n/a
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
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:
RTF File
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
embedequation exploit shellcode
Verdict:
Malicious
Labled as:
CVE-2017-11882
Result
Verdict:
MALICIOUS
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.expl.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Connects to a pastebin service (likely for C&C)
Document exploit detected (process start blacklist hit)
Malicious sample detected (through community Yara rule)
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: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
System process connects to network (likely due to code injection or exploit)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected VBS Downloader Generic
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Detection:
cve-2017-11882-shellcode
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2024-04-29 04:35:18 UTC
File Type:
Document
Extracted files:
4
AV detection:
13 of 24 (54.17%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:monday shit collection persistence rat spyware stealer
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 behavior: MapViewOfSection
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
Accesses Microsoft Outlook accounts
Adds Run key to start application
Enumerates connected drives
Reads user/profile data of web browsers
Blocklisted process makes network request
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
192.3.216.140:22337
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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 |
|---|---|
| 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 |
|---|---|
| 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
Delivery method
Distributed via web download
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