MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 66f3abf06c96c938894a2d721331e7dec08154d681bfae6f2db4dbc35a995e46. 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: | 66f3abf06c96c938894a2d721331e7dec08154d681bfae6f2db4dbc35a995e46 |
|---|---|
| SHA3-384 hash: | 7579814036c9a1b7c3e46193d063a7e3e86c659ae0f3535ebde2d430cb2c483fae84cca5e5925f441c3adc2637c5b33e |
| SHA1 hash: | 6b4feb7ecad8adffc5d9b14d931c463b76347d48 |
| MD5 hash: | 8d3e290b31269ed646fdaeb03fc044b1 |
| humanhash: | sierra-may-eighteen-harry |
| File name: | SecuriteInfo.com.Win32.PWSX-gen.17334.14366 |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 1'015'816 bytes |
| First seen: | 2024-08-23 06:20:17 UTC |
| Last seen: | 2024-08-23 08:48:31 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:vdZshZWHXnhEE8tpUEx1I94L+R49xIUBZjlP4JH0Y6QC4zmEs0mwF0WOs5HvrWZp:vzshZEXw7jIS6RuXGUDQFDMEKW4THM0L |
| Threatray | 4'375 similar samples on MalwareBazaar |
| TLSH | T10625121AB799DE10C6496671C6D7901583F2AA437673C7573EC812892E013FAAC8E7CF |
| TrID | 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 9.7% (.EXE) Win64 Executable (generic) (10523/12/4) 6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.1% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| Reporter |  SecuriteInfoCom |
| Tags: | exe RemcosRAT |
Intelligence
File Origin
# of uploads :
2
# of downloads :
397
Origin country :
FRVendor Threat Intelligence
Malware family:
remcos
ID:
1
File name:
SecuriteInfo.com.Win32.PWSX-gen.17334.14366
Verdict:
Malicious activity
Analysis date:
2024-08-23 06:23:07 UTC
Tags:
netreactor rat remcos remote evasion stealer keylogger mpress
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Verdict:
Malicious
Score:
96.5%
Tags:
Discovery Encryption Execution Generic Infostealer Network Static Stealth Remcos
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Setting a keyboard event handler
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Reading critical registry keys
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
net_reactor overlay packed packed remcos vbnet
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
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, PureLog Stealer
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
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
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts 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)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected PureLog Stealer
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Score:
99%
Verdict:
Malware
File Type:
PE
Detection:
remcos
Threat name:
Win32.Backdoor.Remcos
Status:
Malicious
First seen:
2024-08-23 06:21:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
16 of 24 (66.67%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 4'365 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:aug 23c collection credential_access discovery execution rat spyware stealer
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Credentials from Password Stores: Credentials from Web Browsers
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Malware Config
C2 Extraction:
method8888.ddns.net:6902
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
bdc4de56f3a251e6ddae87f5540fbec1053eb345ed31b4fb6dfb7032ed078afd
MD5 hash:
d922d06b570580719b0453f6c46d4943
SHA1 hash:
b0f21c1ca04e934bbc1d432eee04f155c2709c5e
Detections:
Remcos
win_remcos_auto
win_remcos_w0
malware_windows_remcos_rat
SH256 hash:
e23fc459337bc84b5464890e4e93c8c0f237e15ecc7fab42d0426087c8f5f291
MD5 hash:
8cc00e17c70aa3a61cead8c00b6034d3
SHA1 hash:
8a745ef51bfca1047c1aac4cdbe46bbe046f869d
SH256 hash:
eb4dc619fc7b92ae44e8a10e5765a1d45bf288bf5161a24e56d9136d2a355b90
MD5 hash:
4b096dc2426dcc47c8397c372e16236f
SHA1 hash:
419f2f368d3c8dbae81a83fbbf958c7af8598b9f
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
624d27a88b1c7f8d14aff615c69bfb1d763617bdb56851c28e61f2f4e02ede93
MD5 hash:
16967794563fd13bb2b4dcf2a6746e34
SHA1 hash:
06c0f5ab0e1a44caf0cf981cebf74c685adf29e5
SH256 hash:
f59e4d6311bea17ba708ade3a085bf18b73ef12115dcfce9fbbe97dfd461afeb
MD5 hash:
35deb60a3630e8a921e7cb69957d65bd
SHA1 hash:
04ce295f5eb88ac2917fc5ed92d497a13c37db44
SH256 hash:
d8247e67b46e7bc5e1325068a5e3cae80542f9417ce6b85ee49012dcbf0d22f8
MD5 hash:
f50a5c41865b2297a73a0dd94ebcfcae
SHA1 hash:
00af2a07bd849cbd728520d9bef769428c64acc5
SH256 hash:
66f3abf06c96c938894a2d721331e7dec08154d681bfae6f2db4dbc35a995e46
MD5 hash:
8d3e290b31269ed646fdaeb03fc044b1
SHA1 hash:
6b4feb7ecad8adffc5d9b14d931c463b76347d48
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Malware family:
Remcos
Verdict:
Malicious
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: | DotNet_Reactor |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on. |
| Rule name: | INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438 |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables signed with stolen, revoked or invalid certificates |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | pe_imphash |
|---|
| Rule name: | PE_Potentially_Signed_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | PureCrypter |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies PureCrypter, .NET loader and obfuscator. |
| Reference: | https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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 (HIGH_ENTROPY_VA) | high |
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