MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090
SHA3-384 hash: 25c7ba403bab3fea761910a4087a1fee0e18f50d8cb71978dc3b31564f60abf6af0fb112107c31f662e38d7cfae0d1eb
SHA1 hash: badac07b3119bed100cac5cdb2ce051e3c45abed
MD5 hash: d493953abd8001f866e78546010fad11
humanhash: butter-iowa-bakerloo-north
File name:b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'409'024 bytes
First seen:2025-11-06 11:23:29 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1895460fffad9475fda0c84755ecfee1 (341 x Formbook, 89 x AgentTesla, 56 x a310Logger)
ssdeep 24576:R5EmXFtKaL4/oFe5T9yyXYfP1ijXdahd0UwHRMHgJhfcNc3N5:RPVt/LZeJbInQRah2/HRMHgPgc
TLSH T16E65CF027391C062FFAB92734F56F6115BBC79260123A62F13981D7ABE701B1563E7A3
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 adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
79
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090
Verdict:
Malicious activity
Analysis date:
2025-11-06 20:54:39 UTC
Tags:
rat remcos auto-startup remote stealer autoit mpress
Link:
https://app.any.run/tasks/4d79763b-f168-410b-9e8c-e436142e578a

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/36160/
Detection(s):
SecuriteInfo.com.Win32.Trojan.Agent.35E5V6.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=690c8560ea0f3e915c238ebe
Tags:
autorun autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Сreating synchronization primitives
DNS request
Connection attempt
Enabling autorun by creating a file
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-27T02:23:00Z UTC
Last seen:
2025-11-08T06:37:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/acd12f69-2f0e-4ec6-baec-4a286d88a87f
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Link:
https://app.malva.re/file/d493953abd8001f866e78546010fad11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-10-27 05:23:45 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ww7raml7jjlflca5h6gjeuogivb2lbbvwbnvf7273e4on2o7mcia._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos collection discovery rat
Link:
https://tria.ge/reports/251106-nhwp5swmdr/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Drops startup file
Executes dropped EXE
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
11243debestremcox.duckdns.org:
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/325fe672-eecf-441e-b499-c02c6e5e9998
Unpacked files
SH256 hash:
b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090
MD5 hash:
d493953abd8001f866e78546010fad11
SHA1 hash:
badac07b3119bed100cac5cdb2ce051e3c45abed
Link:
https://www.unpac.me/results/ebb92892-9551-44f6-9291-3278cdfb639d/
SH256 hash:
4b879a8e7969bfa17d797287744cc90ca90c41a6549cd575a1d803c8183c65f9
MD5 hash:
c5d5147e8a2d6d58e13e573611116e2e
SHA1 hash:
f9e325df1d810d754353e11c969bb3301f0f8c30
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/ebb92892-9551-44f6-9291-3278cdfb639d/
Parent samples :
fc74d7bf40e65a783a3669ee174421f104a88e02086009c5425b8e203c2c88c1
02f7b0a5e5d5f342ac04d36ed2e79629714ed3a2d7fad472e60745ff9956db4d
b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090
e4409e500f59989ec137dbb71adb4971c16f5b270b0acccc3234576764003837
7b8b03074ac86f665db0fc509463355b912ff87ac238ab7199dfe936d7b15325
1071c74b5884c24f564a41864d593160d07a51aa128d10bbf12857a335516dcc
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/b5bf10317f4a5655881d3f8c9251c64543a58435b05b52ff5fd938e6e9df6090

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
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:TH_Generic_MassHunt_Win_Malware_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Windows malware mass-hunt rule - 2025
Reference:https://cyfare.net/

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/36160/

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