MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 737262c8a965c09d0b6744aef7951b0edd0ef8edd9b1c2a1ca97d04b586feb1c. 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 27 File information Comments
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SHA256 hash: 737262c8a965c09d0b6744aef7951b0edd0ef8edd9b1c2a1ca97d04b586feb1c
SHA3-384 hash: 127d985b7bcf862782c8400da0bee2acbb24e6bd3e12982a0c9ac2ba6ca35a485cc1a53f002eafd471a41568a6c3229f
SHA1 hash: 29257ce9b1fd571eb521c9b471a661b9cb123aa1
MD5 hash: 5950c99fcd505f0afe64a242adfd7a7b
humanhash: edward-washington-sodium-apart
File name:Specifications_RFQ_Sept2025.scr
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'076'224 bytes
First seen:2025-09-08 03:50:11 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:/rnOZQpwuANGCBBocsSFD5KKe8voi3vTWkrs0Fbc/v8yhYI65xFCRx:/rn+vFD5KKeIowlrsOc/v8HNi
TLSH T14635234303A8452FED92D9767BDD6EA4453E7028897A78EE4C4741B800901BE8EFFC97
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
Reporter threatcat_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
102
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Specifications_RFQ_Sept2025.scr
Verdict:
Malicious activity
Analysis date:
2025-09-08 03:52:09 UTC
Tags:
remcos rat remote stealer mpress
Link:
https://app.any.run/tasks/a7128110-ae43-416f-85a9-5a7a78812699

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/26188/
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68be529c6e66ba602d78fb2f
Tags:
dropper emotet smarts micro
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Сreating synchronization primitives
DNS request
Connection attempt
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/68be529820d0ee406d99c62b/reports/5d6eb8d4-d2c3-4e91-8067-abfeb88f23db/overview
Verdict:
Malicious
Labled as:
MSIL.Androm.Generic
Link:
https://www.hybrid-analysis.com/sample/737262c8a965c09d0b6744aef7951b0edd0ef8edd9b1c2a1ca97d04b586feb1c
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-07T22:33:00Z UTC
Last seen:
2025-09-07T22:33:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/737262c8a965c09d0b6744aef7951b0edd0ef8edd9b1c2a1ca97d04b586feb1c/results?tab=lookup
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e340cd13-acc7-4619-8594-a0812bab2031
Result
Threat name:
Remcos, DarkCloud, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1772885
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Attempt to bypass Chrome Application-Bound Encryption
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
Detected Remcos RAT
Drops PE files with a suspicious file extension
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
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: Potential Data Stealing Via Chromium Headless Debugging
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, 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)
Uses dynamic DNS services
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected DarkCloud
Yara detected Generic Dropper
Yara detected PureLog Stealer
Yara detected Remcos RAT
Yara detected Telegram RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1772885 Sample: Specifications_RFQ_Sept2025... Startdate: 08/09/2025 Architecture: WINDOWS Score: 100 45 princeboy.duckdns.org 2->45 47 geoplugin.net 2->47 67 Suricata IDS alerts for network traffic 2->67 69 Found malware configuration 2->69 71 Malicious sample detected (through community Yara rule) 2->71 75 21 other signatures 2->75 9 Specifications_RFQ_Sept2025.scr.exe 2 2->9         started        signatures3 73 Uses dynamic DNS services 45->73 process4 signatures5 77 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 9->77 12 InstallUtil.exe 5 18 9->12         started        process6 dnsIp7 49 princeboy.duckdns.org 216.9.224.66, 4025, 49690, 49692 ATT-INTERNET4US Reserved 12->49 51 geoplugin.net 178.237.33.50, 49691, 80 ATOM86-ASATOM86NL Netherlands 12->51 53 127.0.0.1 unknown unknown 12->53 37 C:\Users\user\AppData\Local\Temp\THDEA1.tmp, MS-DOS 12->37 dropped 39 C:\Users\user\AppData\Local\Temp\THDE42.tmp, MS-DOS 12->39 dropped 41 C:\Users\user\AppData\Local\Temp\THDE03.tmp, PE32 12->41 dropped 43 3 other malicious files 12->43 dropped 85 Contains functionality to bypass UAC (CMSTPLUA) 12->85 87 Detected Remcos RAT 12->87 89 Attempt to bypass Chrome Application-Bound Encryption 12->89 91 11 other signatures 12->91 17 Blxjkwiqzqt.scr 2 12->17         started        20 RmClient.exe 1 12->20         started        22 RmClient.exe 1 12->22         started        24 7 other processes 12->24 file8 signatures9 process10 signatures11 55 Antivirus detection for dropped file 17->55 26 InstallUtil.exe 17->26         started        57 Tries to steal Instant Messenger accounts or passwords 20->57 59 Tries to steal Mail credentials (via file / registry access) 20->59 61 Tries to harvest and steal browser information (history, passwords, etc) 22->61 63 Tries to steal Mail credentials (via file registry) 24->63 65 Loading BitLocker PowerShell Module 24->65 29 conhost.exe 24->29         started        31 conhost.exe 24->31         started        33 conhost.exe 24->33         started        35 msedge.exe 24->35         started        process12 signatures13 79 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 26->79 81 Tries to steal Mail credentials (via file / registry access) 26->81 83 Tries to harvest and steal browser information (history, passwords, etc) 26->83
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/737262c8a965c09d0b6744aef7951b0edd0ef8edd9b1c2a1ca97d04b586feb1c
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.52 Win 32 Exe x86
Link:
https://app.malva.re/file/5950c99fcd505f0afe64a242adfd7a7b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/737262c8a965c09d0b6744aef7951b0edd0ef8edd9b1c2a1ca97d04b586feb1c/
Threat name:
ByteCode-MSIL.Backdoor.Androm
Create hunting rule
Status:
Malicious
First seen:
2025-09-08 03:51:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
18 of 23 (78.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=onzgfsfjmxaj2c3hisxppfi3b3oq56hn3gy4fioks7iewwdp5moa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
n/a
Score:
  9/10
Tags:
collection credential_access discovery execution stealer
Link:
https://tria.ge/reports/250908-eeah3aen4x/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Drops file in Program Files 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
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6d4fbde8-c05d-4d21-892a-4810ddf8622c
Unpacked files
SH256 hash:
737262c8a965c09d0b6744aef7951b0edd0ef8edd9b1c2a1ca97d04b586feb1c
MD5 hash:
5950c99fcd505f0afe64a242adfd7a7b
SHA1 hash:
29257ce9b1fd571eb521c9b471a661b9cb123aa1
Link:
https://www.unpac.me/results/dbfb76b7-a855-481e-a910-6aa86f737f5c/
SH256 hash:
19caf7863fa9b18774c1c520a6142e257f98eeea19128eda73d2a733edba2f52
MD5 hash:
ed2d02de9505b50b28fd05fe2632cefa
SHA1 hash:
1186d425ab0b08b24f6585c1b73f412b6c1a50b4
Link:
https://www.unpac.me/results/dbfb76b7-a855-481e-a910-6aa86f737f5c/
SH256 hash:
d44618374b1bc4835d5764dbd366989151a015f397c1ebc16fd80649852af8c3
MD5 hash:
dc64277ccbb84c6af5bcd7fd4889be23
SHA1 hash:
769b5a7d796785a24d13170ed9629a1d82e103d9
Link:
https://www.unpac.me/results/dbfb76b7-a855-481e-a910-6aa86f737f5c/
SH256 hash:
ddea2f872f96cdbbb4343f7b8313efe4643a18ede5e6c8ef437da5e0a0f0ace8
MD5 hash:
bcafec8bf7862deb3978d558480df2bd
SHA1 hash:
901474f5b55f3deee7ef948dcda162efa4d97a08
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/dbfb76b7-a855-481e-a910-6aa86f737f5c/
SH256 hash:
2f59d48ec050b18fb17dc890b968a1fa65ae18f6c9e743b76e47d7526493fa5e
MD5 hash:
40943a6a6145f0cc74ac389e233a394c
SHA1 hash:
c5220104056fdc46376435690c7bf7af299785d0
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/dbfb76b7-a855-481e-a910-6aa86f737f5c/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/737262c8a965/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/737262c8a965c09d0b6744aef7951b0edd0ef8edd9b1c2a1ca97d04b586feb1c

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_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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_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_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_
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.

Malspam

RemcosRAT

Executable exe 737262c8a965c09d0b6744aef7951b0edd0ef8edd9b1c2a1ca97d04b586feb1c

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/26188/

Comments