MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 3881f76b58969b36b12b7f8f60c2593bdf2e8671fa355e806669cebe9514cb34. 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: 19
| SHA256 hash: | 3881f76b58969b36b12b7f8f60c2593bdf2e8671fa355e806669cebe9514cb34 |
|---|---|
| SHA3-384 hash: | bfc8ca88ea7050c1337acee773233cc48bcc5a36503e66275160bd1a3982d7383db120ab84911eb2614ac8c869a8884b |
| SHA1 hash: | 2acaedc4f4ffb493b436f51b10bcffc329c168b8 |
| MD5 hash: | a7d83cbe306fabee782b5fa36d2999a3 |
| humanhash: | fish-oxygen-blossom-alabama |
| File name: | Gruppo Hermnes.exe |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 510'253 bytes |
| First seen: | 2023-02-22 09:46:23 UTC |
| Last seen: | 2023-02-22 11:48:44 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 429 x GuLoader) |
| ssdeep | 12288:lYSTnriBE1ZrOsVNc6qngCiYq2Q/VMOOA2eUYM2qf33siuQyz:lY40kSomFfQ/By33Cn |
| Threatray | 308 similar samples on MalwareBazaar |
| TLSH | T1D0B423003650C0A6E4932BB8E57CDDE7ABB19E2C51EBDB551B84EA1CECB6603CD1C356 |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4505/5/1) |
| File icon (PE): |  |
| dhash icon | 8687334545338606 (2 x Formbook, 1 x Loki, 1 x RemcosRAT) |
| Reporter |  abuse_ch |
| Tags: | exe RAT RemcosRAT |
Intelligence
File Origin
# of uploads :
2
# of downloads :
231
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
ID:
1
File name:
Gruppo Hermnes.exe
Verdict:
Malicious activity
Analysis date:
2023-02-22 09:49:58 UTC
Tags:
trojan rat remcos stealer keylogger
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Setting a keyboard event handler
Searching for the window
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Result
Malware family:
n/a
Score:
5/10
Tags:
n/a
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
5/10
Confidence:
83%
Tags:
overlay packed shell32.dll
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
REMCOS
Verdict:
Malicious
Result
Threat name:
Remcos
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Installs a global keyboard hook
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sample uses process hollowing technique
Sigma detected: Remcos
Snort IDS alert for network traffic
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)
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Detection:
remcos
Threat name:
Win32.Backdoor.Remcos
Status:
Malicious
First seen:
2023-02-22 09:47:07 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
14 of 23 (60.87%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 298 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:newcomputers collection persistence rat spyware stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
ezeife.kozow.com:2404
Unpacked files
SH256 hash:
ba159c0db403bbe2f0279d6a73342b8213ede878f0674025c57d73c4cb238de3
MD5 hash:
f1092f888dc95a3afa0be98685184ba2
SHA1 hash:
6ebf03699b16ceb2bd704f4c4dfa51a59e4305ce
Detections:
Remcos
win_remcos_auto
SH256 hash:
7083f8ec3cf273ef5648f55599682ce9dc1e0d641ad53e8b03a39efb053ae944
MD5 hash:
7cfa71220746283bd902379083810d4e
SHA1 hash:
f7fa718bc85c4b9129cd65bf208432934bd61ca7
SH256 hash:
3881f76b58969b36b12b7f8f60c2593bdf2e8671fa355e806669cebe9514cb34
MD5 hash:
a7d83cbe306fabee782b5fa36d2999a3
SHA1 hash:
2acaedc4f4ffb493b436f51b10bcffc329c168b8
Malware family:
Remcos
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
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: | iexplorer_remcos |
|---|---|
| Author: | iam-py-test |
| Description: | Detect iexplorer being taken over by Remcos |
| Rule name: | INDICATOR_EXE_Packed_MPress |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables built or packed with MPress PE compressor |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables referencing many email and collaboration clients. Observed in information stealers |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) |
| Rule name: | meth_get_eip |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | QbotStuff |
|---|---|
| Author: | anonymous |
| Rule name: | Remcos |
|---|---|
| Author: | kevoreilly |
| Description: | Remcos Payload |
| Rule name: | REMCOS_RAT_variants |
|---|
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| Rule name: | TeslaCryptPackedMalware |
|---|
| Rule name: | Windows_Trojan_Remcos_b296e965 |
|---|---|
| Author: | Elastic Security |
| Rule name: | win_remcos_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.remcos. |
| Rule name: | yara_template |
|---|
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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