MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4d28a6634d2e52dbe653765e5a7521d35bd300d180f67fb2cb683c3852802e8. 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

Intelligence 20 IOCs YARA 22 File information Comments

SHA256 hash:	f4d28a6634d2e52dbe653765e5a7521d35bd300d180f67fb2cb683c3852802e8
SHA3-384 hash:	7f57ae2c36b50d7688bcb3992e7a0c3330e93c19dc8c12202912b04e9f3c64caf4f617f8c9a3c02194cbf28cdf0465bd
SHA1 hash:	1fe760e787768fa977154ba47e63fb4f4c9ba66f
MD5 hash:	ddc1145905d4a5d35e5dac4363e79fc0
humanhash:	two-mars-emma-nitrogen
File name:	FedEX Express_AWB102235516763.PDF.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	1'055'744 bytes
First seen:	2025-07-29 07:01:47 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	24576:bV4w/q/8Fj8OdB/pfMthVLPP5VnPscAU8J:mw/qUFj8OdBBfMJLPP5VD
Threatray	4'124 similar samples on MalwareBazaar
TLSH	T14625022072B6CC03C98E477C49B2E13413BD9E996513C35EAFE57DBFB929B910E421A1
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
dhash icon	0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter	Anonymous
Tags:	exe RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

FedEX Express_AWB102235516763.PDF.exe

Verdict:

Malicious activity

Analysis date:

2025-07-29 07:35:12 UTC

Tags:

remcos rat remote phishing auto-sch-xml

Link:

https://app.any.run/tasks/18ad0ea2-a9a6-41e0-a186-5974fa750e13

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

Remcos

Link:

https://www.capesandbox.com/analysis/17500/

Verdict:

Malicious

Score:

94.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=688872060b4775fb2132ceb5

Tags:

keylog micro spawn

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Searching for 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

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

base64 bitmap config-extracted evasive lolbin masquerade msbuild obfuscated packed packed packed rat rat reconnaissance regsvcs remcos remcos rezer0 roboski schtasks stego vbc windows

Link:

https://www.filescan.io/uploads/6888720a13488cfd44ddbcf8/reports/dbef7da7-d7f0-4f96-a117-3e83efda604f/overview

Verdict:

Malicious

Labled as:

Genie.8DN.Generic

Link:

https://www.hybrid-analysis.com/sample/f4d28a6634d2e52dbe653765e5a7521d35bd300d180f67fb2cb683c3852802e8

Malware family:

KeyBase

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/69666d81-aca8-4533-b2f4-b537ed7bc45b

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/f4d28a6634d2e52dbe653765e5a7521d35bd300d180f67fb2cb683c3852802e8

Verdict:

inconclusive

YARA:

5 match(es)

Tags:

.Net Executable PDB Path PE (Portable Executable) SOS: 0.24 Win 32 Exe x86

Link:

https://app.malva.re/file/ddc1145905d4a5d35e5dac4363e79fc0

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/f4d28a6634d2e52dbe653765e5a7521d35bd300d180f67fb2cb683c3852802e8/

Verdict:

Malicious

Threat:

VHO:Trojan.Win32.Sdum

Link:

https://tip.neiki.dev/file/f4d28a6634d2e52dbe653765e5a7521d35bd300d180f67fb2cb683c3852802e8

Threat name:

Win32.Backdoor.Remcos

Status:

Malicious

First seen:

2025-07-29 03:46:24 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

16 of 24 (66.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=6tjiuzru2lss3ptfg5s6lj2sdu232mandahwp6zmw2b4hbjialua._file

Verdict:

malicious

Label(s):

remcos

unc_loader_037

RemcosRAT

0bc4589749f91661e58192bb1200809244d27248e8ee1935baeaaaefd60aa7f6

RemcosRAT

14e491b037d94867f18ba9a1b5feba5bac1ffdc5c9e3034da7fe87432c88fb60

RemcosRAT

47fef22842a3bd3769c9c78461cf85cc940167e58f96bccac4870e9acaae0159

RemcosRAT

error

RemcosRAT

+ 4'114 additional samples on MalwareBazaar

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:host discovery execution persistence rat

Link:

https://tria.ge/reports/250729-htz9tavxaw/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

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

Checks computer location settings

Command and Scripting Interpreter: PowerShell

Remcos

Remcos family

Malware Config

C2 Extraction:

meme8.work.gd:3124

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/6f9416e1-a5b0-46a0-9ed9-5457612254fb

Unpacked files

SH256 hash:

f4d28a6634d2e52dbe653765e5a7521d35bd300d180f67fb2cb683c3852802e8

MD5 hash:

ddc1145905d4a5d35e5dac4363e79fc0

SHA1 hash:

1fe760e787768fa977154ba47e63fb4f4c9ba66f

Link:

https://www.unpac.me/results/f7aaa33c-6529-401c-b465-277a7af0fd69/

SH256 hash:

940b0144ebadac27dacbb241b06cb2ade088c8256bfb8bb2c32a47e2e1786618

MD5 hash:

2117841fef5eaa689cc73743d1d0b211

SHA1 hash:

21dc94a9c6902d8c93d29cb379e322e2d6d72534

Detections:

win_remcos_w0

win_remcos_auto

Remcos

malware_windows_remcos_rat

win_remcos_rat_unpacked

INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer

Link:

https://www.unpac.me/results/f7aaa33c-6529-401c-b465-277a7af0fd69/

SH256 hash:

4488d77ce515fe826762994e0dd1ada9bb7a88582c75defb2f6044ff9946a991

MD5 hash:

40b03bb151502f531d27884a48be6420

SHA1 hash:

80b330b90f854ecdc663287e8054b3b704ea6b04

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/f7aaa33c-6529-401c-b465-277a7af0fd69/

SH256 hash:

fbdd32034a9d103543d81a6176950d4ef53e9cd75f0603a95efcc3cdb9854ef5

MD5 hash:

0dd40babf5b1f2f8c85f5ab41d95c8f7

SHA1 hash:

f5fc80b6a2466a2daa14351b34621b8f7361fd9a

Link:

https://www.unpac.me/results/f7aaa33c-6529-401c-b465-277a7af0fd69/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/f4d28a6634d2/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/f4d28a6634d2e52dbe653765e5a7521d35bd300d180f67fb2cb683c3852802e8

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 Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	FreddyBearDropper Create hunting rule
Author:	Dwarozh Hoshiar
Description:	Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	iexplorer_remcos Create hunting rule
Author:	iam-py-test
Description:	Detect iexplorer being taken over by Remcos

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer Create hunting rule
Author:	ditekSHen
Description:	detects Windows exceutables potentially bypassing UAC using eventvwr.exe

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	pe_imphash Create hunting rule

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	Remcos Create hunting rule
Author:	kevoreilly
Description:	Remcos Payload

Rule name:	remcos_ Create hunting rule
Author:	Michelle Khalil
Description:	This rule detects unpacked remcos malware samples.

Rule name:	REMCOS_RAT_variants Create hunting rule

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

Rule name:	ThreadControl__Context Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	Windows_Trojan_Remcos_b296e965 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set

Rule name:	win_remcos_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.remcos.

Rule name:	win_remcos_rat_unpacked Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in remcos rat Samples.

Rule name:	win_remcos_w0 Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in remcos rat Samples.

Rule name:	yarahub_win_remcos_rat_unpacked_aug_2023 Create hunting rule
Author:	Matthew @ Embee_Research

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape

https://www.capesandbox.com/analysis/17500/

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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