MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9. 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: 17

Intelligence 17 IOCs YARA 38 File information Comments

SHA256 hash:	d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9
SHA3-384 hash:	12df8fb7561bc22e697ca9662e2da6401da8b78c92397a7fef57c8559d3a016dff3980cba186e5501dd8469393030f04
SHA1 hash:	e5d929209bd61a0522ecaf4c1662dcb0f220456b
MD5 hash:	c9741c83dadc26e3ae291207d494e91f
humanhash:	sink-oven-illinois-quiet
File name:	1x40' HQ 國際北川 SO3611-0421 KEELUNG - 中遠 EVER MAGUS V-1432-004E (AAS3-D3E-003E) .pdf.scr
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	1'283'584 bytes
First seen:	2026-03-23 04:46:44 UTC
Last seen:	2026-03-23 05:37:50 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'845 x AgentTesla, 19'778 x Formbook, 12'302 x SnakeKeylogger)
ssdeep	24576:ZdHMJ/XLR5+WlU5rLil/RRL71MwVSaqtcG+aHhC8wZzEGZjV/UCVmjSA2:ZBMJzR5+WlU5r8RL71McSaqqG+K89NzS
Threatray	2'189 similar samples on MalwareBazaar
TLSH	T16F551211AB5BCC53E1BA1BB4A9D2E47007B49E4DE827D28B4FD93CE73623B851945383
TrID	70.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 6.2% (.EXE) Win64 Executable (generic) (6522/11/2) 4.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika	pebin
Reporter	threatcat_ch
Tags:	exe RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

127

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

NETReactor RoboSki

Details

NETReactor

decrypted strings

RoboSki

a decrypted ReZer0 component and possibly a decryption component

Link:

https://research.acce.ciphertechsolutions.com/results/bf6e072f-5398-4e44-9a83-5cee558e4f5e/

Malware family:

remcos

ID:

File name:

_d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9.exe

Verdict:

Malicious activity

Analysis date:

2026-03-23 04:48:22 UTC

Tags:

netreactor remcos rat auto-reg

Link:

https://app.any.run/tasks/bd30742f-44d0-427a-a16b-594d2176632b

Note:

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

Gathering data

Detection(s):

SecuriteInfo.com.Win32.MalwareX-gen.11872516.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=69c0c5d9aacb4c376b12f1ed

Tags:

underscore lien

Result

Verdict:

Clean

Maliciousness:

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

crypt formbook krypt masquerade net_reactor obfuscated packed packed unsafe vbnet

Link:

https://www.filescan.io/uploads/69c0c5d42000fc76c3f7f8f8/reports/b883ddb2-de27-4438-b6d7-869ba6aab1b1/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9

Result

Gathering data

Verdict:

Malicious

File Type:

exe x32

Link:

https://opentip.kaspersky.com/d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9/results?tab=lookup

Malware family:

REMCOS

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/dcf847d8-42be-4f40-902e-54c734812fa7

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1887400

Signature

.NET source code contains method to dynamically call methods (often used by packers)

.NET source code contains potential unpacker

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

C2 URLs / IPs found in malware configuration

Contains functionality to bypass UAC (CMSTPLUA)

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

Creates autostart registry keys with suspicious names

Found hidden mapped module (file has been removed from disk)

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

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Suricata IDS alerts for network traffic

Switches to a custom stack to bypass stack traces

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Instant Messenger accounts or passwords

Tries to steal Mail credentials (via file / registry access)

Tries to steal Mail credentials (via file registry)

Unusual module load detection (module proxying)

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

Yara detected AntiVM3

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9

Gathering data

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9/

Verdict:

Malicious

Threat:

Family.REMCOS

Link:

https://tip.neiki.dev/file/d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=2gafxnkutd4u3ipzaqcrp552vkwpfvhxptnwzvcksq3bcxorfpuq._file

Verdict:

malicious

Label(s):

remcos

RemcosRAT

86bd0fb523c233fe4e82fbb0f614482c65736dea768816f6d0b44cecbdb07535

RemcosRAT

a8997f7b77f90d348f1a55cde634f4e89a6cbef5f5914391663f31e69a244275

RemcosRAT

be2142e2818d4df10efca8b223a823dae8dbcc0679e8e19a94fa9ae729c34273

RemcosRAT

d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9

RemcosRAT

error

RemcosRAT

+ 2'179 additional samples on MalwareBazaar

Result

Malware family:

n/a

Score:

5/10

Tags:

discovery

Link:

https://tria.ge/reports/260323-fenalaev9r/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Program crash

System Location Discovery: System Language Discovery

SmartAssembly .NET packer

Unpacked files

SH256 hash:

d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9

MD5 hash:

c9741c83dadc26e3ae291207d494e91f

SHA1 hash:

e5d929209bd61a0522ecaf4c1662dcb0f220456b

Link:

https://www.unpac.me/results/91cbd301-156e-4e77-8bca-185b3fda0f7c/

SH256 hash:

0cb56e30226f2c165c131d7ed52e3f1cb6524baaa59ced2562ca3f2424571abc

MD5 hash:

61c512cc35c583c4d066f6d7f2726296

SHA1 hash:

6233237b8cda39500d478cf93b1c9f8af44d472d

Detections:

win_remcos_auto

win_remcos_w0

Remcos

malware_windows_remcos_rat

win_remcos_rat_unpacked

INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Link:

https://www.unpac.me/results/91cbd301-156e-4e77-8bca-185b3fda0f7c/

Parent samples :

eef6a2be2d108d13d18f38a61013bab9be3290a8a8f1a2ef1b632731367372d0
a8997f7b77f90d348f1a55cde634f4e89a6cbef5f5914391663f31e69a244275
014f82191da6caeb5662632441b2793fa4ed776f53913b5bac0d47133796397b
52a553cb4f8949d238242a420e1e2ff71fe479d5bf6d59f2dba9aa3e566b0ce5
4957eae300223c437c380ab6b66ed5f90dc8820f225a377c1824b63b0b1d7481
49af01f9215248c4f6a5e180940b0ad6c1b7bf596b8b9c4eb8251a4dc81eacad
d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9

SH256 hash:

b9abdf181a8746c43cd3665ce5c45ff33ddb8916b400454a26b2cb3e346bc194

MD5 hash:

e29ddeebef1fd4ef69698fa2ee7b1d65

SHA1 hash:

919b0e3bfc023f595dfb4e83688a96970dc5fa2b

Detections:

INDICATOR_EXE_Packed_SmartAssembly

Link:

https://www.unpac.me/results/91cbd301-156e-4e77-8bca-185b3fda0f7c/

Parent samples :
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SH256 hash:

0321fd36862318b1d774cf02c32992fe4a9625b24d202a1d5bcd49ca01141176

MD5 hash:

d06a21196d9254e51b7244fd6dfe16bb

SHA1 hash:

b9a7f3150e9d6caa0a7eca1cf36e84f015c299f6

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

Link:

https://www.unpac.me/results/91cbd301-156e-4e77-8bca-185b3fda0f7c/

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/d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9

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:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

Rule name:	CP_Script_Inject_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	Detects attempts to inject code into another process across PE, ELF, Mach-O binaries

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:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

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:	INDICATOR_EXE_Packed_MPress Create hunting rule
Author:	ditekSHen
Description:	Detects executables built or packed with MPress PE compressor

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many email and collaboration clients. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM Create hunting rule
Author:	ditekSHen
Description:	Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	NET 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_RAT_variants Create hunting rule

Rule name:	Remcos_unpacked_PulseIntel Create hunting rule
Author:	PulseIntel
Description:	Remcos Payload

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

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

Rule name:	Sus_CMD_Powershell_Usage Create hunting rule
Author:	XiAnzheng
Description:	May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

Rule name:	TeslaCryptPackedMalware Create hunting rule

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

Rule name:	TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE Create hunting rule
Author:	CYFARE
Description:	Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:	https://cyfare.net/

Rule name:	VECT_Ransomware Create hunting rule
Author:	Mustafa Bakhit
Description:	Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

Rule name:	Windows_Trojan_Remcos_921ef449 Create hunting rule
Author:	Elastic Security

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

exe d1805bb55498f94da1f9040517f7baaaacf2d4f77cdb6cd44a9436115dd12be9

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/58750/

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