MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b121d9b4950ef1d71a99bbd8a0f93e71a150ec01f7986b1eebc1c557e9810819. 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: 7


Intelligence 7 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b121d9b4950ef1d71a99bbd8a0f93e71a150ec01f7986b1eebc1c557e9810819
SHA3-384 hash: f81585a8c1a055190bd34b994b66cfdb3db2ce720f1bc65b16ecc219e855a6c141865fce05f48e35339dc83cff8d7bfd
SHA1 hash: 9e90576c8b3cd8c33afb9ee02b999142c9d8daa8
MD5 hash: 4dcfe85e647781aa52af2825f44beabd
humanhash: equal-winner-apart-september
File name:IRD-N.� 8800.7z
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:492'147 bytes
First seen:2023-02-21 09:02:10 UTC
Last seen:2023-02-21 09:04:01 UTC
File type: 7z
MIME type:application/x-7z-compressed
ssdeep 12288:fwnSiNvaSaepfVA998rc2J7+yE7LPjaA29d:InSHI+9svJ7wLja19d
TLSH T13DA423BEAF8DF78242A86AFE9D6C7DA154E6F422E61F957711D47C16800F830D1ED022
TrID 57.1% (.7Z) 7-Zip compressed archive (v0.4) (8000/1)
42.8% (.7Z) 7-Zip compressed archive (gen) (6000/1)
Reporter cocaman
Tags:7z


Avatar
cocaman
Malicious email (T1566.001)
From: "supports0004@vetrallc.com" (likely spoofed)
Received: "from vetrallc.com (unknown [103.114.106.105]) "
Date: "20 Feb 2023 20:17:35 -0800"
Subject: "=?UTF-8?B?UmU6IEF3OiBDb21tZXJjaWFsIEludm9pY2UgfHwgSVJELU4uwrogODgwMA==?="
Attachment: "IRD-N.� 8800.7z"

Intelligence

File Origin
# of uploads :
3
# of downloads :
117
Origin country :
n/a
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:IRD-N.º 8800.exe
File size:509'252 bytes
SHA256 hash: 08c829e7056b8e022539076acbc962dea072e6506184d4036b785cb0e4592371
MD5 hash: 8c668d830c6e1ca73a8553b12d6e5a66
MIME type:application/x-dosexec
Signature RemcosRAT
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.NSISX.Spy.Gen.24.10792.4363.UNOFFICIAL
Create hunting rule

Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/b121d9b4950ef1d71a99bbd8a0f93e71a150ec01f7986b1eebc1c557e9810819/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/63f488c601b99ad33e7ecf88/reports/08094ddb-7299-4bb6-b02e-2c691e59e934/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/b121d9b4950ef1d71a99bbd8a0f93e71a150ec01f7986b1eebc1c557e9810819
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b121d9b4950ef1d71a99bbd8a0f93e71a150ec01f7986b1eebc1c557e9810819/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-02-21 07:51:58 UTC
File Type:
Binary (Archive)
Extracted files:
5
AV detection:
14 of 25 (56.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=weq5tnevb3y5oguzxpmkb6j6ogqvb3ab66mgwhxlyhcvp2mbbamq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost persistence rat
Link:
https://tria.ge/reports/230221-md9krsgc8t/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
66.63.168.35:5888
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/b121d9b4950ef1d71a99bbd8a0f93e71a150ec01f7986b1eebc1c557e9810819

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:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
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:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

RemcosRAT

7z b121d9b4950ef1d71a99bbd8a0f93e71a150ec01f7986b1eebc1c557e9810819

(this sample)

RemcosRAT

Executable exe 08c829e7056b8e022539076acbc962dea072e6506184d4036b785cb0e4592371

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 08c829e7056b8e022539076acbc962dea072e6506184d4036b785cb0e4592371
  
Dropping
MD5 8c668d830c6e1ca73a8553b12d6e5a66

Comments