MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 645e77f1311ebc3904768208d0193543d52b2ab2aa4d710d0b3762ddaa572e6c. 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: 6

Intelligence 6 IOCs YARA 4 File information Comments

SHA256 hash:	645e77f1311ebc3904768208d0193543d52b2ab2aa4d710d0b3762ddaa572e6c
SHA3-384 hash:	a64ebe805f38c457d95e366feec901a995952f54c82465dddc3b17f9538691e95b5163b8de0077076f8be78214bfcb65
SHA1 hash:	a5f78a1d623f703176defab558f205f7388b6dbb
MD5 hash:	adb5b08ab045e67493a7eaf83700977b
humanhash:	black-five-yellow-eighteen
File name:	Salary_Approval.rar
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	548'907 bytes
First seen:	2025-06-11 03:32:27 UTC
Last seen:	Never
File type:	rar
MIME type:	application/x-rar
ssdeep	12288:ruX/b3r1Lu3ZX/IiHRaW51I6bt02Ymn07eSS9ucPbn:qT3r1Lu3ZPlxjc6h09RcPbn
TLSH	T1A9C4235A0F051458C973F4C2AA22957601C43BCDA1B7432BD9FA731C99E2B49DA7FE32
TrID	58.3% (.RAR) RAR compressed archive (v-4.x) (7000/1) 41.6% (.RAR) RAR compressed archive (gen) (5000/1)
Magika	rar
Reporter	serosero
Tags:	rar remcos RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

137

Origin country :

File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:	Salary_Approval.exe
File size:	683'792 bytes
SHA256 hash:	36001d58670525417b86a01ad0a3924e1a88ff33a36e39175136b240a6daf32f
MD5 hash:	27332ea64dd939685b7e682b2549189a
MIME type:	application/x-dosexec
Signature	RemcosRAT

Vendor Threat Intelligence

Verdict:

Clean

Score:

89.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6848b10e07b5e8c1cfe632b8

Tags:

n/a

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

adaptive-context blackhole installer microsoft_visual_cc overlay signed

Link:

https://www.filescan.io/uploads/6848f8ebfd02ed5e05a33358/reports/26db510c-7d3f-42ac-a6f5-3fed58a9c9c4/overview

Verdict:

Suspicious

Labled as:

Trojan.Remcos

Link:

https://www.hybrid-analysis.com/sample/645e77f1311ebc3904768208d0193543d52b2ab2aa4d710d0b3762ddaa572e6c

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/645e77f1311ebc3904768208d0193543d52b2ab2aa4d710d0b3762ddaa572e6c/

Threat name:

Win32.Trojan.Guloader

Status:

Malicious

First seen:

2025-06-10 23:39:35 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

19 of 36 (52.78%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=mrphp4jrd26dsbdwqienagjvipkswkvsvjgxcdilg5rn3ksxfzwa._file

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:remotehost discovery persistence rat

Link:

https://tria.ge/reports/250611-em2braap8s/

Behaviour

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Program crash

System Location Discovery: System Language Discovery

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Adds Run key to start application

Legitimate hosting services abused for malware hosting/C2

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Remcos

Remcos family

Malware Config

C2 Extraction:

196.251.72.191:5001

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

Threat name:

Legit

Score:

0.00

Link:

https://yomi.yoroi.company/submissions/645e77f1311ebc3904768208d0193543d52b2ab2aa4d710d0b3762ddaa572e6c

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:	Detect_NSIS_Nullsoft_Installer Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects NSIS installers by .ndata section + NSIS header string

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

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)