MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 f99d37efd85b8d2dea1cc5f885bc17d86b047f50fb68e79aaf4715cea8f8559e. 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: 15
| SHA256 hash: | f99d37efd85b8d2dea1cc5f885bc17d86b047f50fb68e79aaf4715cea8f8559e |
|---|---|
| SHA3-384 hash: | 662846dc69661ccb4ad25e78f08efa1e9cc15efb46d14dac313d72e6ce1dae4a419ac51535aec990739ff501f138c34d |
| SHA1 hash: | d665a1de753c9456e1d721328dd779a773908a37 |
| MD5 hash: | da9e7b9ff2f5b57033f4f0f48f879120 |
| humanhash: | november-eleven-pennsylvania-oscar |
| File name: | f99d37efd85b8d2dea1cc5f885bc17d86b047f50fb68e79aaf4715cea8f8559e |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 161'280 bytes |
| First seen: | 2025-05-26 10:47:20 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger) |
| ssdeep | 3072:0FgDTavaZriY85SziX6XI2IsLQ3/ncsRQTVYJeCtZdGu:2oTcaNiY85q66z9Q3/csRkY0CtZdG |
| TLSH | T11FF34AA86BDC872BC1AE92BDF793945557B1D217E282F7CAD8C8E1F10843311791227E |
| TrID | 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10522/11/4) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.3% (.EXE) Win32 Executable (generic) (4504/4/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9) |
| Magika | pebin |
| Reporter |  JAMESWT_WT |
| Tags: | 185-241-208-118 exe RemcosRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
403
Origin country :
ITVendor Threat Intelligence
Malware family:
remcos
ID:
1
File name:
f99d37efd85b8d2dea1cc5f885bc17d86b047f50fb68e79aaf4715cea8f8559e
Verdict:
Malicious activity
Analysis date:
2025-05-26 10:56:57 UTC
Tags:
rat remcos remote
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
96.5%
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Launching a process
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
base64 obfuscated
Verdict:
Malicious
Labled as:
Lazy.Generic
Malware family:
REMCOS
Verdict:
Malicious
Result
Threat name:
Remcos, ResolverRAT
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
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
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses threadpools to delay analysis
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Yara detected ResolverRAT
Behaviour
Behavior Graph:
Score:
94%
Verdict:
Malware
File Type:
PE
Threat name:
ByteCode-MSIL.Trojan.MassLogger
Status:
Malicious
First seen:
2025-04-28 07:46:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
26 of 36 (72.22%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:remotehost discovery rat
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Remcos
Remcos family
Malware Config
C2 Extraction:
185.241.208.118:9683
Unpacked files
SH256 hash:
f99d37efd85b8d2dea1cc5f885bc17d86b047f50fb68e79aaf4715cea8f8559e
MD5 hash:
da9e7b9ff2f5b57033f4f0f48f879120
SHA1 hash:
d665a1de753c9456e1d721328dd779a773908a37
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: | Lumma_Stealer_Detection |
|---|---|
| Author: | ashizZz |
| Description: | Detects a specific Lumma Stealer malware sample using unique strings and behaviors |
| Reference: | https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/ |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| 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 (GUARD_CF) | high |
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