MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 baa92cdc50fba4cec0928b6b1f7d1b89611dedfb9ddb2f1bef9236bc0422c460. 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: 18

Intelligence 18 IOCs YARA 25 File information Comments

SHA256 hash:	baa92cdc50fba4cec0928b6b1f7d1b89611dedfb9ddb2f1bef9236bc0422c460
SHA3-384 hash:	afffe22e2cdce0eee607179e5c54f7af20ead8ef349aa5d716fabf004fa192cc26dc86ed6870c831aa411c74631f16c9
SHA1 hash:	085f3f952c5f9e8511b2cd5cba7fc6ce0e185a16
MD5 hash:	ed514105ad7a8c14325dff14ce4c0107
humanhash:	carpet-fanta-blue-lake
File name:	ArrivalNotice_MEDUEG679552.PDF.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	1'016'840 bytes
First seen:	2025-03-03 12:53:00 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep	24576:l3ilzaYpbTud3keMaNfGy41tX4lbf2DuRkLm94GXTFsimuup:l3izaYp3QkeXgIlbPAmBjSiDup
TLSH	T15A2512B83B99D102CA9157742B70F2B5533D6EC9F800C72B5BDDAEEFBE226410E54246
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	201070f269696810 (4 x SnakeKeylogger, 3 x Formbook, 2 x DarkCloud)
Reporter	Anonymous
Tags:	exe RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

552

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

ArrivalNotice_MEDUEG679552.PDF.exe

Verdict:

Malicious activity

Analysis date:

2025-03-03 12:56:11 UTC

Tags:

rat remcos remote

Link:

https://app.any.run/tasks/fa43a369-c42b-4ff4-942a-570fbcf872af

Note:

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

Verdict:

Clean

Score:

89.3%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67c5a712c668b65489beb010

Tags:

n/a

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Сreating synchronization primitives

Setting a keyboard event handler

DNS request

Connection attempt

Sending a custom TCP request

Sending an HTTP GET request

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

invalid-signature masquerade obfuscated obfuscated packed packed packer_detected remcos signed vbnet

Link:

https://www.filescan.io/uploads/67c5a63b3c5f644bd9403aea/reports/5b7c2d4a-f414-43fd-a790-1c719721c0c7/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/baa92cdc50fba4cec0928b6b1f7d1b89611dedfb9ddb2f1bef9236bc0422c460

Result

Verdict:

SUSPICIOUS

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

Link:

https://analyze.intezer.com/analyses/78b024e3-524b-4311-a2ef-b946c2e1cbd9

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1628034

Signature

.NET source code contains potential unpacker

Antivirus detection for URL or domain

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

Found malware configuration

Initial sample is a PE file and has a suspicious name

Injects a PE file into a foreign processes

Installs a global keyboard hook

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Sigma detected: Suspicious Double Extension File Execution

Suricata IDS alerts for network traffic

Uses an obfuscated file name to hide its real file extension (double extension)

Yara detected AntiVM3

Yara detected Remcos RAT

Behaviour

Behavior Graph:

Download SVG

Score:

92%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/baa92cdc50fba4cec0928b6b1f7d1b89611dedfb9ddb2f1bef9236bc0422c460

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/baa92cdc50fba4cec0928b6b1f7d1b89611dedfb9ddb2f1bef9236bc0422c460/

Threat name:

Win32.Backdoor.Remcos

Status:

Malicious

First seen:

2025-03-03 10:19:57 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

21 of 24 (87.50%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=xkuszxcq7osm5qesrnvr67i3rfqr33p3txns6g7psi3lybbcyrqa._file

Verdict:

malicious

Label(s):

loader_037

remcos

Similar samples:

error

RemcosRAT

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:icu discovery rat

Link:

https://tria.ge/reports/250303-p4ppdsyky5/

Behaviour

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Remcos

Remcos family

Malware Config

C2 Extraction:

oyo.work.gd:2431

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/12188cd4-cfbd-474f-a5c2-31db3db61485

Unpacked files

SH256 hash:

baa92cdc50fba4cec0928b6b1f7d1b89611dedfb9ddb2f1bef9236bc0422c460

MD5 hash:

ed514105ad7a8c14325dff14ce4c0107

SHA1 hash:

085f3f952c5f9e8511b2cd5cba7fc6ce0e185a16

Link:

https://www.unpac.me/results/f64cb1ca-54c0-4628-8eab-0d44b4694cc9/

SH256 hash:

48e543a50f23ce1d061a47ddedc41a37d5bcf957686c164cf182084941795086

MD5 hash:

489c8c6735b70df5498b27fb2be3e3e0

SHA1 hash:

8f4360426c3cd18e5ec65a3a7e13d10cf87d9d5a

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/f64cb1ca-54c0-4628-8eab-0d44b4694cc9/

SH256 hash:

daf4f1d48b812a6e017f0f9f45ead57ac066e403f4ac7c0dfecae43d7d7e9b6f

MD5 hash:

c44baa611dd19524e27351a2a57b1fc6

SHA1 hash:

96a412c2d9bca5807f356340c67c146055fbe781

Link:

https://www.unpac.me/results/f64cb1ca-54c0-4628-8eab-0d44b4694cc9/

SH256 hash:

31918e8fda9c8ab5a65d4c3fa1285410edeffc50d0a624d98ea7baced0cd0d97

MD5 hash:

25e83008c6d89c541def321fbffb2586

SHA1 hash:

fb88c2c5f9c1ce78224d18b410b7f3596e6c3545

Detections:

malware_windows_remcos_rat

win_remcos_rat_unpacked

INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer

Link:

https://www.unpac.me/results/f64cb1ca-54c0-4628-8eab-0d44b4694cc9/

Parent samples :

baa92cdc50fba4cec0928b6b1f7d1b89611dedfb9ddb2f1bef9236bc0422c460
f6e4833668ca8d61f06a531d2dbaa1ec38f0905c7a3d4523c1cb142df066d74e
0bc4589749f91661e58192bb1200809244d27248e8ee1935baeaaaefd60aa7f6
1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94
1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009
48075512d81806049d193cf798c12f30110cb03ccd0f18bc69e9aa1af69693f8

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/baa92cdc50fb/report/overview.html

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

Threat name:

Malicious File

Score:

0.93

Link:

https://yomi.yoroi.company/submissions/baa92cdc50fba4cec0928b6b1f7d1b89611dedfb9ddb2f1bef9236bc0422c460

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:	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_KB_CERT_7c1118cbbadc95da3752c46e47a27438 Create hunting rule
Author:	ditekSHen
Description:	Detects executables signed with stolen, revoked or invalid certificates

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_Digital_Certificate Create hunting rule
Author:	albertzsigovits

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_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.

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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