MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79. 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: 20
| SHA256 hash: | c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79 |
|---|---|
| SHA3-384 hash: | ca476033ba471c0ecc3e8085050bebc96b89750ea2309ae2349b06885929b02962af0fda693b26e88e645402325f130b |
| SHA1 hash: | 19781381bd5043aafbabf0a6d90c1569e58f0d5a |
| MD5 hash: | fe4ebc62a5498c4d43699abe554febb0 |
| humanhash: | angel-paris-pip-colorado |
| File name: | ocean.scr.exe |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 1'045'504 bytes |
| First seen: | 2024-06-03 13:43:57 UTC |
| Last seen: | 2024-06-03 14:33:04 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 24576:u30eN7KGGcjILQEH7fCUOb5JNPQRlpOHK0dIjISCn:ChJH8LQcfvO5JNPQRlpOHSjISCn |
| Threatray | 4'396 similar samples on MalwareBazaar |
| TLSH | T17025E021B3E94729F9FF0BBBB8B6B91447B5B1066843DA4F4CA451AD09D3B008E12777 |
| TrID | 30.6% (.SCR) Windows screen saver (13097/50/3) 24.5% (.EXE) Win64 Executable (generic) (10523/12/4) 15.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 10.5% (.EXE) Win32 Executable (generic) (4504/4/1) 4.8% (.ICL) Windows Icons Library (generic) (2059/9) |
| Reporter |  James_inthe_box |
| Tags: | exe RemcosRAT |
Intelligence
File Origin
# of uploads :
2
# of downloads :
385
Origin country :
USVendor Threat Intelligence
Malware family:
remcos
ID:
1
File name:
c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exe
Verdict:
Malicious activity
Analysis date:
2024-06-03 13:44:40 UTC
Tags:
rat remcos keylogger
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Link:
Tags:
Generic Network Remcos
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Сreating synchronization primitives
Creating a file
Setting a keyboard event handler
DNS request
Connection attempt
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
masquerade packed remcos
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
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:
rans.troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code references suspicious native API functions
AI detected suspicious 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
Contains functionalty to change the wallpaper
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Snort IDS alert for network traffic
Uses dynamic DNS services
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Detection:
remcos
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Status:
Malicious
First seen:
2024-06-03 02:16:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
20 of 24 (83.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 4'386 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:remotehost rat
Behaviour
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Remcos
Malware Config
C2 Extraction:
oceansss.duckdns.org:1144
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
45c7b64a55dca23ee1239649e03a7c361813dbcfc2a0817b0d8e94c907d6ed4b
MD5 hash:
fb1bc19121c4e190d83672bc71b493f0
SHA1 hash:
c3488b969ba578e28ee360be24b6416425a224a0
SH256 hash:
77180ce5b8bfe11c2eca650ea6692fc882d97f9279f72b6f01936984ec706808
MD5 hash:
13c1d4258a6ac1fbd5b867328798346e
SHA1 hash:
addf61894198974ee256d141a098aa91bbb1f059
Detections:
malware_windows_remcos_rat
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
SH256 hash:
4b9a3032607c8730628f2707a1c28af0edfb9458fc30206fc1151fb88840de35
MD5 hash:
12a7c46ce8e989db54acaa7e5ea52cf0
SHA1 hash:
5409a4c689bfe0dab7b5b4438eadfd5b04a0822f
Detections:
MALWARE_Win_DLInjector02
SH256 hash:
c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79
MD5 hash:
fe4ebc62a5498c4d43699abe554febb0
SHA1 hash:
19781381bd5043aafbabf0a6d90c1569e58f0d5a
Malware family:
Remcos
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
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: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | iexplorer_remcos |
|---|---|
| Author: | iam-py-test |
| Description: | Detect iexplorer being taken over by Remcos |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) |
| Rule name: | maldoc_find_kernel32_base_method_1 |
|---|---|
| Author: | Didier Stevens (https://DidierStevens.com) |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | Remcos |
|---|---|
| Author: | kevoreilly |
| Description: | Remcos Payload |
| Rule name: | REMCOS_RAT_variants |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | ThreadControl__Context |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | Windows_Trojan_Remcos_b296e965 |
|---|---|
| Author: | Elastic Security |
| Reference: | https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set |
| Rule name: | win_remcos_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.remcos. |
| Rule name: | win_remcos_w0 |
|---|---|
| Author: | Matthew @ Embee_Research |
| Description: | Detects strings present in remcos rat Samples. |
| Rule name: | yarahub_win_remcos_rat_unpacked_aug_2023 |
|---|---|
| Author: | Matthew @ Embee_Research |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
BLint
The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.
Findings
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (GUARD_CF) | high |
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