MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b41957150ba1873f1b450400ac2bf7d88c96acb6a4bf01c5ffee306598500bd. 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: 19


Intelligence 19 IOCs YARA 26 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b41957150ba1873f1b450400ac2bf7d88c96acb6a4bf01c5ffee306598500bd
SHA3-384 hash: aa493ef5300a84aa2eeb0294e41a60a8bec1f890616e5d913d14a2bc02a131cb155ea2aa61aeec2fafa2d3ec101ceacd
SHA1 hash: 0da47033127260abe9926c06769d45b659140919
MD5 hash: 2c1583218cbe85a8326ece671468ea01
humanhash: kansas-hotel-crazy-charlie
File name:2c1583218cbe85a8326ece671468ea01.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'002'504 bytes
First seen:2025-07-12 06:15:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:L3nbS/19O2xB2lqS5Vn3cFa0ZNVLiTZGY6mR:L3O/vJPjS/n3L05LfmR
TLSH T17525121E5993C4C2E1292F744AE3C2364D743FE619B2C7DB7BEABC8F38A19512502746
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 10f0c4c8c8c4f010 (26 x AgentTesla, 18 x Smoke Loader, 10 x Formbook)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
36
Origin country :
SE SE
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
_4b41957150ba1873f1b450400ac2bf7d88c96acb6a4bf01c5ffee306598500bd.exe
Verdict:
Malicious activity
Analysis date:
2025-07-12 06:15:56 UTC
Tags:
remcos rat auto-sch-xml netreactor
Link:
https://app.any.run/tasks/61dd2239-1120-4592-97b2-c71f5e060561

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/13941/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6871fd89900df8e7f86a0ac4
Tags:
micro spawn sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
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
Сreating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Connection attempt to an infection source
Sending a TCP request to an infection source
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
invalid-signature obfuscated packed packed packer_detected signed vbnet
Link:
https://www.filescan.io/uploads/6871fd8aa567bf5f148276dc/reports/a07c1468-bb5b-4881-8bcd-97231dc7d83a/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4b41957150ba1873f1b450400ac2bf7d88c96acb6a4bf01c5ffee306598500bd
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6b0ab5a1-19ab-4575-94eb-00faed53018f
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1734532
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
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
Detected Remcos RAT
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1734532 Sample: RaPWB6RbSY.exe Startdate: 12/07/2025 Architecture: WINDOWS Score: 100 44 geoplugin.net 2->44 50 Suricata IDS alerts for network traffic 2->50 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 12 other signatures 2->56 8 RaPWB6RbSY.exe 7 2->8         started        12 mKxmWFctUQaiY.exe 5 2->12         started        signatures3 process4 file5 36 C:\Users\user\AppData\...\mKxmWFctUQaiY.exe, PE32 8->36 dropped 38 C:\...\mKxmWFctUQaiY.exe:Zone.Identifier, ASCII 8->38 dropped 40 C:\Users\user\AppData\Local\...\tmp9C2F.tmp, XML 8->40 dropped 42 C:\Users\user\AppData\...\RaPWB6RbSY.exe.log, ASCII 8->42 dropped 58 Uses schtasks.exe or at.exe to add and modify task schedules 8->58 60 Adds a directory exclusion to Windows Defender 8->60 62 Injects a PE file into a foreign processes 8->62 14 RaPWB6RbSY.exe 4 13 8->14         started        18 powershell.exe 22 8->18         started        20 schtasks.exe 1 8->20         started        22 RaPWB6RbSY.exe 8->22         started        64 Multi AV Scanner detection for dropped file 12->64 66 Contains functionality to bypass UAC (CMSTPLUA) 12->66 68 Contains functionalty to change the wallpaper 12->68 70 3 other signatures 12->70 24 mKxmWFctUQaiY.exe 12->24         started        26 schtasks.exe 1 12->26         started        signatures6 process7 dnsIp8 46 89.238.176.5, 49692, 53284 M247GB United Kingdom 14->46 48 geoplugin.net 178.237.33.50, 49693, 80 ATOM86-ASATOM86NL Netherlands 14->48 72 Detected Remcos RAT 14->72 74 Loading BitLocker PowerShell Module 18->74 28 WmiPrvSE.exe 18->28         started        30 conhost.exe 18->30         started        32 conhost.exe 20->32         started        34 conhost.exe 26->34         started        signatures9 process10
Score:
94%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4b41957150ba1873f1b450400ac2bf7d88c96acb6a4bf01c5ffee306598500bd
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable PDB Path PE (Portable Executable) SOS: 0.07 Win 32 Exe x86
Link:
https://app.malva.re/file/2c1583218cbe85a8326ece671468ea01
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b41957150ba1873f1b450400ac2bf7d88c96acb6a4bf01c5ffee306598500bd/
Threat name:
ByteCode-MSIL.Trojan.MassLogger
Create hunting rule
Status:
Malicious
First seen:
2025-07-07 08:05:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
27 of 38 (71.05%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jnazk4kqximhh4nukbaavqv7pwems2wlnjf7ahc773rqmwmfac6q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
unc_loader_037
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:imagex discovery execution persistence rat
Link:
https://tria.ge/reports/250712-gz5wtaynv7/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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:
89.238.176.5:53284
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/95179a9b-7a4c-4e0a-936c-1567c353c02f
Unpacked files
SH256 hash:
4b41957150ba1873f1b450400ac2bf7d88c96acb6a4bf01c5ffee306598500bd
MD5 hash:
2c1583218cbe85a8326ece671468ea01
SHA1 hash:
0da47033127260abe9926c06769d45b659140919
Link:
https://www.unpac.me/results/a4425ba3-3e8c-43b0-b272-3f2dfefb253c/
SH256 hash:
16b286e265bf73d9306fdcf18b6af9aa68bcd5322cb250cb66b1b14a220c88d6
MD5 hash:
9d1364afa57b30b1f4eea413809f2d08
SHA1 hash:
66bc8a0b0e37e21dbb5fe5a2050e2522391067e1
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/a4425ba3-3e8c-43b0-b272-3f2dfefb253c/
Parent samples :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 hash:
032b89d30d65418ec8e1cb2cc75728537e97eda84f55a4cc1d543d7720caa565
MD5 hash:
f8cc07784e4ef9e7a6f864f6df37ee4e
SHA1 hash:
9b6e503a167510cc61c51bbea01e8490dd932f3b
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/a4425ba3-3e8c-43b0-b272-3f2dfefb253c/
SH256 hash:
5f07c77b39e94f28f70b329bfd868e47701974ea8869d08f303a12fe533f6fea
MD5 hash:
b0c31646720fd52e4676cd426acfab16
SHA1 hash:
d651d5865bf86c1fe58b99dcd4fccf3a972574d7
Detections:
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Remcos
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/a4425ba3-3e8c-43b0-b272-3f2dfefb253c/
Parent samples :
f1892a0bc11aede6a7a0a8bb1fdd84f6b7b481783e0794b508ca7c9af2c00f73
4b41957150ba1873f1b450400ac2bf7d88c96acb6a4bf01c5ffee306598500bd
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/4b41957150ba1873f1b450400ac2bf7d88c96acb6a4bf01c5ffee306598500bd

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: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_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
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: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: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:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
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: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
Cape
https://www.capesandbox.com/analysis/13941/

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments