MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b8e6aed1e468008650e35a6442152c2a9a2aa6b75d4e93857e85642b0451368. 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:	1b8e6aed1e468008650e35a6442152c2a9a2aa6b75d4e93857e85642b0451368
SHA3-384 hash:	22da87a74208ec60d3870bf64efc92c94b024e67ca0338f68dec92c5f994d583894730977355cf823d41e9a29af2c075
SHA1 hash:	bbf3aa95a6fc56dc3b0d398cc3e4ebe9a329311a
MD5 hash:	0361173667a15dca6c63c12f74aa9228
humanhash:	seven-august-robert-charlie
File name:	Pemberitahuan_Transaksi.pdf
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	997'384 bytes
First seen:	2025-02-26 09:11:47 UTC
Last seen:	2025-02-26 10:27:40 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	24576:WPW33CvZkvwyVMlHRfUbo/oJPjFEwnKTp/U0qVW/VkUzh:5CvZkvwyEZUbo/oFjFRKTlUQVjF
Threatray	4'269 similar samples on MalwareBazaar
TLSH	T1F72512A83B29D803CAA496F50AF1F17427B91DDDA804D2D69FDAACDFB5E6F401D4040B
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	d4cc86d4f29ec4d4 (9 x Formbook, 4 x MassLogger, 3 x Loki)
Reporter	MAM
Tags:	exe RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

666

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

Pemberitahuan_Transaksi.pdf.js

Verdict:

Malicious activity

Analysis date:

2025-02-26 09:04:06 UTC

Tags:

remcos

Link:

https://app.any.run/tasks/de3dc690-d4c0-41a5-8ecd-0000992eace8

Note:

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

Detection(s):

SecuriteInfo.com.Win32.MalwareX-gen.30343.31311.UNOFFICIAL

Verdict:

Malicious

Score:

90.2%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67bedafda0fd713c335ceb2a

Tags:

underscore injection dropper micro

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

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

invalid-signature masquerade obfuscated obfuscated packed packed packer_detected signed vbnet

Link:

https://www.filescan.io/uploads/67bedaf66222db7f23dc1661/reports/f89bdb23-815b-4a30-894e-2fddaa80d801/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/1b8e6aed1e468008650e35a6442152c2a9a2aa6b75d4e93857e85642b0451368

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/c3070a78-1697-4c46-8759-0656e8e1af37

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1624498

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

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:

94%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/1b8e6aed1e468008650e35a6442152c2a9a2aa6b75d4e93857e85642b0451368

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/1b8e6aed1e468008650e35a6442152c2a9a2aa6b75d4e93857e85642b0451368/

Threat name:

Win32.Trojan.Remcos

Status:

Malicious

First seen:

2025-02-26 09:12:16 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=dohgv3i6i2aaqziogwteiiksyku2fktloxkosocx5blefmcfcnua._file

Verdict:

malicious

Label(s):

remcos

unknown_loader_037

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:nom discovery rat

Link:

https://tria.ge/reports/250226-k5827stnz6/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

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:

meme.linkpc.net:3174

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/2219917b-97a6-4130-9e65-1d96b5d625a9

Unpacked files

SH256 hash:

1b8e6aed1e468008650e35a6442152c2a9a2aa6b75d4e93857e85642b0451368

MD5 hash:

0361173667a15dca6c63c12f74aa9228

SHA1 hash:

bbf3aa95a6fc56dc3b0d398cc3e4ebe9a329311a

Link:

https://www.unpac.me/results/7756d1b2-afd2-40e2-af47-1013663e63f5/

SH256 hash:

c22366c47d586822e32ac72e54ca53fb8f61f649c08b8175decc0aa6ffbd7219

MD5 hash:

2cf343efcecb368ce8dafb5dbb97364c

SHA1 hash:

1e46815fa1a6d61b912cc772b489d1ecff8d1b2d

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/7756d1b2-afd2-40e2-af47-1013663e63f5/

Parent samples :

1b8e6aed1e468008650e35a6442152c2a9a2aa6b75d4e93857e85642b0451368
2bbb50fc07c524476ac62080ec8cba707fd77398956445cc3b4abc2ddb84bba8
280b4b8cc09a0d41f1bf9941cf83794008cb4b62e13830e156affe63eb8e47c4

SH256 hash:

a022e6f55375671e37dca4be1a8590e0e601db993cf2117432e8852bcd27a79b

MD5 hash:

2f658568996e2015a81a9f2594949081

SHA1 hash:

65cd67e5824a9f0cf6626ded90a449b1d21cb329

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/7756d1b2-afd2-40e2-af47-1013663e63f5/

SH256 hash:

1bbc2292e8dbc375be960a13e68925ee2791797904482e20e0b0ad29390bab09

MD5 hash:

78d1b22a08ebe9af0c07b426f26f4ba9

SHA1 hash:

8e38afc04f8e7ecf20b52eaaa0824b4de8eb8ec6

Link:

https://www.unpac.me/results/7756d1b2-afd2-40e2-af47-1013663e63f5/

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

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.

Malspam

RemcosRAT

gz a1cd1ee683c8e33828cbad98b828a1d8048dfd10c3bba5f5f72abd64e7691d85

RemcosRAT

exe 1b8e6aed1e468008650e35a6442152c2a9a2aa6b75d4e93857e85642b0451368

(this sample)

any.run

https://app.any.run/tasks/9a7963dc-fe15-4d74-bb89-4d72ae3b8ae3

Dropped by

MD5 509397326dfd80033903ca2ff1be6de7

Dropped by

SHA256 a1cd1ee683c8e33828cbad98b828a1d8048dfd10c3bba5f5f72abd64e7691d85

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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