MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a6a51e6620882856ea22eadca02f23db581bd19571c5461c28302da0f897c3c9. 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: 14


Intelligence 14 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a6a51e6620882856ea22eadca02f23db581bd19571c5461c28302da0f897c3c9
SHA3-384 hash: ec9c34dfb515b46ff09c2fd99b5b48b43608c5db9a86197d985e2ee52986245c47b76e30fb08608d65f884e75e9e022b
SHA1 hash: 18d61f687321c6dc50caf526f37769fdcd0c799a
MD5 hash: 42a9e65ed938a8402a9a5d1d54a15446
humanhash: pasta-michigan-utah-virginia
File name:FedEx_883494406252.bat
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:946'035 bytes
First seen:2025-09-18 06:32:38 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/plain
ssdeep 24576:FF47eeIt/TRcR/aRRLKEzLmQKYwXYtMOIZTyI:FOacQlzHJI5
Threatray 41 similar samples on MalwareBazaar
TLSH T1E915023DC6B0FDE4036E31E0666E3F99624D0B93FA745BACF5D904AA1969740CB3A14C
Magika batch
Reporter abuse_ch
Tags:bat FedEx RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
64
Origin country :
SE SE
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
FedEx_883494406252.bat
Verdict:
Malicious activity
Analysis date:
2025-09-18 06:37:09 UTC
Tags:
rat remcos remote evasion stealer
Link:
https://app.any.run/tasks/f3a081c6-79f8-4858-b7f5-c5bdad948ee3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/28073/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68cba82588b954439247a206
Tags:
obfuscate vmdetect xtreme shell
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
anti-vm masquerade obfuscated
Link:
https://www.filescan.io/uploads/68cba8a4dbc6f5a29c4b430a/reports/429943e9-ef0f-4fe7-8570-0ee90ecb6e4a/overview
Verdict:
Suspicious
Labled as:
BAT/Agent.AZY
Link:
https://www.hybrid-analysis.com/sample/a6a51e6620882856ea22eadca02f23db581bd19571c5461c28302da0f897c3c9
Verdict:
Malicious
File Type:
unix shell
First seen:
2025-09-17T20:48:00Z UTC
Last seen:
2025-09-17T20:48:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/a6a51e6620882856ea22eadca02f23db581bd19571c5461c28302da0f897c3c9/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1779748
Signature
.NET source code contains a sample name check
.NET source code references suspicious native API functions
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 steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Detected Remcos RAT
Found evasive API chain checking for user administrative privileges
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
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
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Powershell drops PE file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential Data Stealing Via Chromium Headless Debugging
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded IEX Cmdlet
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Suspicious powershell command line found
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)
Tries to steal Mail credentials (via file registry)
Writes to foreign memory regions
Yara detected Remcos 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: 1779748 Sample: FedEx_883494406252.bat Startdate: 18/09/2025 Architecture: WINDOWS Score: 100 51 api.ipify.org 2->51 53 api.findip.net 2->53 63 Suricata IDS alerts for network traffic 2->63 65 Found malware configuration 2->65 67 Malicious sample detected (through community Yara rule) 2->67 69 14 other signatures 2->69 11 cmd.exe 1 2->11         started        signatures3 process4 signatures5 79 Suspicious powershell command line found 11->79 14 cmd.exe 1 11->14         started        16 conhost.exe 11->16         started        process6 process7 18 cmd.exe 3 14->18         started        signatures8 61 Suspicious powershell command line found 18->61 21 powershell.exe 14 51 18->21         started        26 conhost.exe 18->26         started        process9 dnsIp10 55 104.168.115.79, 49717, 49718, 49719 AS-COLOCROSSINGUS United States 21->55 57 api.findip.net 104.21.93.189, 443, 49721 CLOUDFLARENETUS United States 21->57 59 2 other IPs or domains 21->59 43 C:\Users\user\AppData\Local\Temp\TH33FB.tmp, PE32+ 21->43 dropped 45 C:\Users\user\AppData\Local\Temp\TH32A3.tmp, MS-DOS 21->45 dropped 47 C:\Users\user\AppData\Local\Temp\TH3263.tmp, MS-DOS 21->47 dropped 49 2 other malicious files 21->49 dropped 71 Contains functionality to bypass UAC (CMSTPLUA) 21->71 73 Detected Remcos RAT 21->73 75 Attempt to bypass Chrome Application-Bound Encryption 21->75 77 11 other signatures 21->77 28 RmClient.exe 1 21->28         started        31 RmClient.exe 14 21->31         started        33 RmClient.exe 1 21->33         started        35 2 other processes 21->35 file11 signatures12 process13 signatures14 81 Tries to steal Instant Messenger accounts or passwords 28->81 83 Tries to steal Mail credentials (via file / registry access) 28->83 85 Tries to steal Mail credentials (via file registry) 31->85 87 Tries to harvest and steal browser information (history, passwords, etc) 31->87 37 WerFault.exe 16 35->37         started        39 msedge.exe 35->39         started        41 conhost.exe 35->41         started        process15
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/a6a51e6620882856ea22eadca02f23db581bd19571c5461c28302da0f897c3c9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a6a51e6620882856ea22eadca02f23db581bd19571c5461c28302da0f897c3c9/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/a6a51e6620882856ea22eadca02f23db581bd19571c5461c28302da0f897c3c9
Threat name:
Text.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-09-18 01:49:52 UTC
File Type:
Text
AV detection:
5 of 24 (20.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u2sr4zraraufn2rc5lokalzd3nmbxumvohcumhbigaw2b6exypeq._file
Verdict:
malicious
Label(s):
donut_injector
Create hunting rule
remcos
Create hunting rule
Similar samples:
0660741f7d4b1e5d29d281abbbcdda47eed2cd899227f2b787dc89e5b628cb82
RemcosRAT
0cd503ae4803c5e2386e0377ff9a301b00f37e11dd9f14083d47877637672070
RemcosRAT
7776dd6eb20f3e1d9cdb52292e61867e97e8a05ffe6bec81ed742e641c1b60c6
RemcosRAT
879ebda15ee112aeb9ab2af26cf2cd59967cd64ced4fdafc3e571caf100ea5f9
RemcosRAT
c6499501e5e06658bb2353d8624de75952f86b0b44bb64ec0966ee1e8d97a7bf
RemcosRAT
cc7b56a4bd2ce38278456412fe5b31cf7b742fd23e807b5109617631592fc9c5
RemcosRAT
e80861f2196fcab3985e686094a14beb8bfbf6ebda37b466d9f514f4dec86b12
RemcosRAT
error
RemcosRAT
fea17b67e04a88bf2262041ef052514f2bbaf0d059c503736d3fb7058835ae19
RemcosRAT
+ 31 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
collection credential_access defense_evasion discovery execution stealer trojan
Link:
https://tria.ge/reports/250918-hdn7lsbp2x/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Command and Scripting Interpreter: PowerShell
Looks up external IP address via web service
Badlisted process makes network request
Uses browser remote debugging
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
UAC bypass
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/a6a51e6620882856ea22eadca02f23db581bd19571c5461c28302da0f897c3c9

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:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
Rule name:SUSP_PS1_JAB_Pattern_Jun22_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects suspicious UTF16 and Base64 encoded PowerShell code that starts with a $ sign and a single char variable
Reference:Internal Research
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:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques
Rule name:Warp
Create hunting rule
Author:Seth Hardy
Description:Warp
Rule name:WarpStrings
Create hunting rule
Author:Seth Hardy
Description:Warp Identifying Strings

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/28073/

Comments