MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 589f6b1eb61891dd86a846a75949fbd43ed0d81bb323f4aa1048d0c2f9ff1079. 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 23 File information Comments

SHA256 hash: 589f6b1eb61891dd86a846a75949fbd43ed0d81bb323f4aa1048d0c2f9ff1079
SHA3-384 hash: 7848dfb5afbd364c8731fd91590098df5a2255e43078ea3a608a7318d608efda42c4fdd1e06a60514320dda44cf7e704
SHA1 hash: 5d8155636262b42a5929b54406d91b3a89af04c8
MD5 hash: 2ccc756b4b16a188021e78978d8634a8
humanhash: friend-virginia-twenty-charlie
File name:PO_NOV2025_xls.exe
Download: download sample
Signature RemcosRAT
File size:1'363'456 bytes
First seen:2025-11-10 11:25:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 91d07a5e22681e70764519ae943a5883 (93 x Formbook, 14 x RemcosRAT, 11 x AgentTesla)
ssdeep 24576:ntb20pkaCqT5TBWgNQ7aPd2QPB43zxdR9kvOSpzyNd8lO6A:kVg5tQ7aPB2xdiOSMD5
Threatray 223 similar samples on MalwareBazaar
TLSH T18055D01373DD8360C3B25273BA5AB741AE7F782506B1F96B2FD4093DE820162525EA73
TrID 40.3% (.EXE) Win64 Executable (generic) (10522/11/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4504/4/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter cocaman
Tags:exe RemcosRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
113
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO_NOV2025_xls.exe
Verdict:
No threats detected
Analysis date:
2025-11-10 11:28:16 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
underscore autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file
Changing a file
Launching a service
Connection attempt
Searching for synchronization primitives
Sending an HTTP GET request
Sending a custom TCP request
Moving a recently created file
DNS request
Connection attempt to an infection source
Sending a TCP request to an infection source
Unauthorized injection to a system process
Adding an exclusion to Microsoft Defender
Gathering data
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-06T22:46:00Z UTC
Last seen:
2025-11-12T08:03:00Z UTC
Hits:
~1000
Detections:
Backdoor.Win32.Remcos.e Backdoor.Win32.Remcos.aawl Trojan-Spy.Win32.Stealer.sb Trojan-Dropper.Win32.Injector PDM:Trojan.Win32.Generic Trojan-Spy.Win32.Xegumumune.sbc Trojan.Win32.Strab.sb Backdoor.Win32.Remcos.sb Trojan.Win32.Agent.sb Trojan.Win32.Inject.sb
Result
Threat name:
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Signature
Adds a directory exclusion to Windows Defender
Antivirus detection for dropped file
Attempt to bypass Chrome Application-Bound Encryption
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Detected Remcos RAT
Drops PE files with benign system names
Found evasive API chain checking for user administrative privileges
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Found stalling execution ending in API Sleep call
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Potential Data Stealing Via Chromium Headless Debugging
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: System File Execution Location Anomaly
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
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)
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1811273 Sample: PO_NOV2025_xls.exe Startdate: 10/11/2025 Architecture: WINDOWS Score: 100 53 Suricata IDS alerts for network traffic 2->53 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 15 other signatures 2->59 8 PO_NOV2025_xls.exe 4 2->8         started        process3 signatures4 61 Binary is likely a compiled AutoIt script file 8->61 63 Writes to foreign memory regions 8->63 65 Maps a DLL or memory area into another process 8->65 67 Switches to a custom stack to bypass stack traces 8->67 11 svchost.exe 10 13 8->11         started        process5 dnsIp6 41 192.227.128.173, 3028, 49719, 49720 AS-COLOCROSSINGUS United States 11->41 43 127.0.0.1 unknown unknown 11->43 33 C:\Users\user\AppData\Local\Temp\TH639D.tmp, MS-DOS 11->33 dropped 35 C:\Users\user\AppData\Local\Temp\TH62F0.tmp, MS-DOS 11->35 dropped 37 C:\Users\user\AppData\Local\Temp\TH6272.tmp, PE32 11->37 dropped 39 3 other malicious files 11->39 dropped 69 System process connects to network (likely due to code injection or exploit) 11->69 71 Detected Remcos RAT 11->71 73 Attempt to bypass Chrome Application-Bound Encryption 11->73 75 9 other signatures 11->75 16 RmClient.exe 1 11->16         started        19 RmClient.exe 1 11->19         started        21 powershell.exe 21 11->21         started        23 8 other processes 11->23 file7 signatures8 process9 signatures10 45 Tries to steal Instant Messenger accounts or passwords 16->45 47 Tries to steal Mail credentials (via file / registry access) 16->47 49 Tries to harvest and steal browser information (history, passwords, etc) 19->49 51 Loading BitLocker PowerShell Module 21->51 25 conhost.exe 21->25         started        27 WmiPrvSE.exe 21->27         started        29 conhost.exe 23->29         started        31 msedge.exe 23->31         started        process11
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Threat name:
Win32.Trojan.AutoitInject
Status:
Malicious
First seen:
2025-11-07 02:21:39 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
29 of 36 (80.56%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection credential_access discovery execution rat stealer
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Uses browser remote debugging
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
192.227.128.173:3028
Unpacked files
SH256 hash:
589f6b1eb61891dd86a846a75949fbd43ed0d81bb323f4aa1048d0c2f9ff1079
MD5 hash:
2ccc756b4b16a188021e78978d8634a8
SHA1 hash:
5d8155636262b42a5929b54406d91b3a89af04c8
SH256 hash:
80d5579ee5aaad3472ac6e8381852d04f30ed2bec9390ea1a646cf75a728380c
MD5 hash:
7bb7f252f0ea0c16486cc0bfd8f631eb
SHA1 hash:
c26af7b6f0f6c84a251b89d12e75c9e613e581bb
Detections:
win_remcos_w0 win_remcos_auto Remcos malware_windows_remcos_rat win_remcos_rat_unpacked INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
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:AutoIT_Compiled
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:cobalt_strike_tmp01925d3f
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:CP_Script_Inject_Detector
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Disable_Defender
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:FreddyBearDropper
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:pe_detect_tls_callbacks
Rule name:Remcos
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Rule name:Remcos_unpacked_PulseIntel
Author:PulseIntel
Description:Remcos Payload
Rule name:Sus_CMD_Powershell_Usage
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:ThreadControl__Context
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:TH_Generic_MassHunt_Win_Malware_2025_CYFARE
Author:CYFARE
Description:Generic Windows malware mass-hunt rule - 2025
Reference:https://cyfare.net/
Rule name:Windows_Trojan_Remcos_b296e965
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_auto
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_rat_unpacked
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:YahLover
Author:Kevin Falcoz
Description:YahLover
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
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

Executable exe 589f6b1eb61891dd86a846a75949fbd43ed0d81bb323f4aa1048d0c2f9ff1079

(this sample)

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