MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca54ece8f6070eeaac4fae0635129df2ecb9664683cc5bdfc3998d7a351e651e. 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 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ca54ece8f6070eeaac4fae0635129df2ecb9664683cc5bdfc3998d7a351e651e
SHA3-384 hash: eb34759bad01b03de84b468d094b90a2f02f09bd8e2af9af475b533d8b6ea8fcf4fdbe1f73149ac8c685c9e86dae889f
SHA1 hash: 9a9517d0b8f26c8456bb6c8824587a2d1edffddc
MD5 hash: c43b2d3f0ddb038f18a84ad471b580a8
humanhash: mobile-alaska-sad-yellow
File name:PO NOV2025_1762289702_xls.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'340'928 bytes
First seen:2025-11-05 17:22:11 UTC
Last seen:2025-11-06 09:50:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 91d07a5e22681e70764519ae943a5883 (93 x Formbook, 14 x RemcosRAT, 11 x AgentTesla)
ssdeep 24576:2tb20pkaCqT5TBWgNQ7athzo1wJyMWP7J25YVxX9xNilGFy0tdTnHZ6A:jVg5tQ7atW1wucW3X9x0lGIu5
TLSH T14155D02373DE8361C3B25273BA257701AEBF782506A5F56B2FD40D3DE820162525EA73
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 James_inthe_box
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
109
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO NOV2025_1762289702_xls.exe
Verdict:
No threats detected
Analysis date:
2025-11-05 17:24:53 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/94c3d189-e4b0-4850-b62c-7d218ee51739

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/35559/
Detection(s):
SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=690b87ceea0f3e915c233a73
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 file
Creating a process with a hidden window
Changing a file
Launching a service
Connection attempt
Searching for synchronization primitives
Moving a recently created file
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
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/ca54ece8f6070eeaac4fae0635129df2ecb9664683cc5bdfc3998d7a351e651e
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-05T10:22:00Z UTC
Last seen:
2025-11-05T14:03:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/ca54ece8f6070eeaac4fae0635129df2ecb9664683cc5bdfc3998d7a351e651e/results?tab=lookup
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/04732ff8-1948-4fdf-bc88-ffe5463d64c6
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ca54ece8f6070eeaac4fae0635129df2ecb9664683cc5bdfc3998d7a351e651e
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/c43b2d3f0ddb038f18a84ad471b580a8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ca54ece8f6070eeaac4fae0635129df2ecb9664683cc5bdfc3998d7a351e651e/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-11-05 16:20:45 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zjkoz2hwa4hovlcpvyddkeu56lwlszsgqpgfxx6dtggxuni6mupa._file
Verdict:
malicious
Label(s):
autoit
Create hunting rule
remcos
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection credential_access discovery execution rat stealer
Link:
https://tria.ge/reports/251105-vxnreaxkdk/
Behaviour
Enumerates system info in registry
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
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/deb5afdd-82d3-4091-b7f7-12cecc8bb69d
Unpacked files
SH256 hash:
ca54ece8f6070eeaac4fae0635129df2ecb9664683cc5bdfc3998d7a351e651e
MD5 hash:
c43b2d3f0ddb038f18a84ad471b580a8
SHA1 hash:
9a9517d0b8f26c8456bb6c8824587a2d1edffddc
Link:
https://www.unpac.me/results/bff9ca29-80de-48dc-a200-12d65945f884/
SH256 hash:
80d5579ee5aaad3472ac6e8381852d04f30ed2bec9390ea1a646cf75a728380c
MD5 hash:
7bb7f252f0ea0c16486cc0bfd8f631eb
SHA1 hash:
c26af7b6f0f6c84a251b89d12e75c9e613e581bb
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/bff9ca29-80de-48dc-a200-12d65945f884/
Parent samples :
ca54ece8f6070eeaac4fae0635129df2ecb9664683cc5bdfc3998d7a351e651e
589f6b1eb61891dd86a846a75949fbd43ed0d81bb323f4aa1048d0c2f9ff1079
1f770afd971f3372ca89d3eb71f539e415c89323059d3ed475b11d29facc0122
7440ef0eba8981a16f223b10ccccd80671001258b5fd8e95e43161de32b1157d
084fd47a500e122be1ab53c87d6b679bbb34bd1de0d2df5ad8fc7fc75f006f26
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ca54ece8f607/report/overview.html
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/ca54ece8f6070eeaac4fae0635129df2ecb9664683cc5bdfc3998d7a351e651e

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: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_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:pe_detect_tls_callbacks
Create hunting rule
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: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:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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/
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:YahLover
Create hunting rule
Author:Kevin Falcoz
Description:YahLover
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

z 92b639ecffad6f49244fa180aba812565adc8acdfa5a1a2c28c45b1bf939ecfe

RemcosRAT

Executable exe ca54ece8f6070eeaac4fae0635129df2ecb9664683cc5bdfc3998d7a351e651e

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/35559/
  
Dropped by
SHA256 92b639ecffad6f49244fa180aba812565adc8acdfa5a1a2c28c45b1bf939ecfe
  
Dropped by
MD5 4d5f0b33c9f8b2aee7af6554a769070e

Comments