MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 aa9c2d27050b02a8fc47d79e519aeaec6a94190abfc366cf684bf31cf59fbc0d. 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: 21
| SHA256 hash: | aa9c2d27050b02a8fc47d79e519aeaec6a94190abfc366cf684bf31cf59fbc0d |
|---|---|
| SHA3-384 hash: | af2538d690ac565c3d91b5c37b520678780792d3d215ce521fcbc6e85bfeb55a087e5b945fc28bfcb9c245efd9985317 |
| SHA1 hash: | ab05bb72657c62de7ebd3c668f9eee73d722dbd9 |
| MD5 hash: | 7994985f12d0779828101b75dddefb94 |
| humanhash: | neptune-enemy-east-blossom |
| File name: | Proforma Invoice (202500083).pdf.cmd |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 1'874'432 bytes |
| First seen: | 2025-08-04 10:53:00 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 24576:5tlF4cCIRQ4NQOq817XiCuCGzCVxLIwf+AcZuN0EzHTyjRsrSFrZaOe:FCiQEQO94CuCGa4AFrzOjRKI |
| Threatray | 4'118 similar samples on MalwareBazaar |
| TLSH | T17C857C07BB868BF1C66417F7C8BB051C936CE5867313DE5E398A235A1C837BA9941E07 |
| TrID | 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 9.7% (.EXE) Win64 Executable (generic) (10522/11/4) 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 |  threatcat_ch |
| Tags: | exe RemcosRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
62
Origin country :
CHVendor Threat Intelligence
Malware family:
remcos
ID:
1
File name:
Proforma Invoice (202500083).pdf.cmd
Verdict:
Malicious activity
Analysis date:
2025-08-04 10:54:06 UTC
Tags:
netreactor rat remcos auto-startup remote susp-powershell purecrypter
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Verdict:
Malicious
Score:
94.9%
Tags:
obfuscate autorun xtreme hello
Result
Verdict:
Malware
Maliciousness:
Behaviour
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% directory
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Trojan[Downloader]/MSIL.Seraph
Malware family:
REMCOS
Verdict:
Malicious
Result
Threat name:
Remcos, PureLog Stealer, ResolverRAT
Detection:
malicious
Classification:
rans.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
C2 URLs / IPs found in malware configuration
Command shell drops VBS files
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
Drops VBS files to the startup folder
Encrypted powershell cmdline option found
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Sigma detected: Drops script at startup location
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected PureLog Stealer
Yara detected Remcos RAT
Yara detected ResolverRAT
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
Malware
YARA:
12 match(es)
Tags:
.Net .Net Obfuscator .Net Reactor Executable PE (Portable Executable) SOS: 0.30 Win 32 Exe x86
Detection:
remcos
Verdict:
Malicious
Threat:
Family.REMCOS
Threat name:
Win32.Backdoor.Remcos
Status:
Malicious
First seen:
2025-08-04 10:50:40 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
20 of 24 (83.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 4'108 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:remotehost discovery rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Drops startup file
Remcos
Remcos family
Malware Config
C2 Extraction:
email-server.xyz:2990
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
aa9c2d27050b02a8fc47d79e519aeaec6a94190abfc366cf684bf31cf59fbc0d
MD5 hash:
7994985f12d0779828101b75dddefb94
SHA1 hash:
ab05bb72657c62de7ebd3c668f9eee73d722dbd9
SH256 hash:
d8e4d602213c48cf951d8175a559ac1b22a7b01d1930f85c35538f7e7e6a77ae
MD5 hash:
3d1ed42b785148115f200713108c4459
SHA1 hash:
330fba1a376835017f980a3c1c3dac57f2f5791c
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
19efdf03cb94895935225795f68bb9abfded1869687367013b8b4eee3cc99372
MD5 hash:
4e29f75c0c51b9dec76955f0382d9541
SHA1 hash:
4899aa8e3f57339cbaec8faab777897a76fe1c3a
SH256 hash:
d04f9f358ed8b88a8089d5002f944f1c5fda3abf8d0c1eff0483c2062b58ae78
MD5 hash:
59a60518d6ff2352c0697fa5e3f07ad6
SHA1 hash:
bccc0320bc8892c2299dcd951f5b3379be5d5de6
Detections:
win_remcos_w0
win_remcos_auto
Remcos
malware_windows_remcos_rat
win_remcos_rat_unpacked
INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
SH256 hash:
b9ae0fddc07df40d070a4ea7e0bbfdd68b6058b6fe4496ac49cd80213abc0caa
MD5 hash:
349418ceb9959c8ff7d12d14bcd33fc1
SHA1 hash:
bf67cf7d160e5bd8bd7a7d73b9fc98724b0d7698
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: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | FreddyBearDropper |
|---|---|
| Author: | Dwarozh Hoshiar |
| Description: | Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip. |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | iexplorer_remcos |
|---|---|
| Author: | iam-py-test |
| Description: | Detect iexplorer being taken over by Remcos |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer |
|---|---|
| Author: | ditekSHen |
| Description: | detects Windows exceutables potentially bypassing UAC using eventvwr.exe |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | pe_imphash |
|---|
| Rule name: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| Rule name: | Remcos |
|---|---|
| Author: | kevoreilly |
| Description: | Remcos Payload |
| Rule name: | remcos_ |
|---|---|
| Author: | Michelle Khalil |
| Description: | This rule detects unpacked remcos malware samples. |
| Rule name: | REMCOS_RAT_variants |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP) |
| 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_rat_unpacked |
|---|---|
| Author: | Matthew @ Embee_Research |
| Description: | Detects strings present in remcos rat Samples. |
| 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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