MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 879b9830c133cfc616497be434cd8f9988f91fa217e42f30afa21a2ab08ddeab. 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: 8


Intelligence 8 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 879b9830c133cfc616497be434cd8f9988f91fa217e42f30afa21a2ab08ddeab
SHA3-384 hash: 73fef1f90e5d276f0b10a90b1d722300c7ef3562e5c48efac6a9f086305803f9555cb1723a577ae1093c1da44bd3efcf
SHA1 hash: f823e1caf92397d41e46aca724b693bc2d6e56e5
MD5 hash: be556f66e3086d9bf5465c33d51c0921
humanhash: freddie-dakota-cardinal-lake
File name:87654345678900-98.rar
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:389'043 bytes
First seen:2023-11-01 08:04:22 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 6144:qvGAVmi/iCpLqriVyashjXnwENr1gOfqFTDJW/cVQY3PGE86uFFqLY7+LyH5nf:qvNVmf6LVvEr3qFT5r+rfqM7+0x
TLSH T1148423DC66B1C671A761C2B35EB305FCDAC6EB30DBA14BE72A082F718191756FC48162
TrID 80.0% (.ZIP) ZIP compressed archive (4000/1)
20.0% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter cocaman
Tags:INVOICE payment rar RemcosRAT zip


Avatar
cocaman
Malicious email (T1566.001)
From: "sharique804@gmail.com" (likely spoofed)
Received: "from [94.156.6.51] (unknown [94.156.6.51]) "
Date: "1 Nov 2023 03:10:52 +0100"
Subject: "Payment invoice"
Attachment: "87654345678900-98.rar"

Intelligence

File Origin
# of uploads :
1
# of downloads :
99
Origin country :
CH CH
File Archive Information

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

File name:87654345678900-98.exe
File size:406'259 bytes
SHA256 hash: 659af6c54d31cf15cdca40c29959c160e47e65254f178661f98807b649fdb596
MD5 hash: 1197e7a27b14835cf1acf9c3cf35ca74
MIME type:application/x-dosexec
Signature RemcosRAT
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.FileRepMalware.14332.5530.UNOFFICIAL
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Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/879b9830c133cfc616497be434cd8f9988f91fa217e42f30afa21a2ab08ddeab/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/654206b8746262825556bf2b/reports/763ec97f-bc6a-45d2-b975-7f49ecb56ad8/overview
Verdict:
Malicious
Link:
https://www.hybrid-analysis.com/sample/879b9830c133cfc616497be434cd8f9988f91fa217e42f30afa21a2ab08ddeab
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/879b9830c133cfc616497be434cd8f9988f91fa217e42f30afa21a2ab08ddeab
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/879b9830c133cfc616497be434cd8f9988f91fa217e42f30afa21a2ab08ddeab/
Threat name:
Win32.Trojan.Generic
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Status:
Malicious
First seen:
2023-11-01 03:28:23 UTC
File Type:
Binary (Archive)
Extracted files:
3
AV detection:
21 of 38 (55.26%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=q6nzqmgbgph4mfsjppsdjtmptgepsh5cc7sc6mfpuincvmen32vq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection persistence rat spyware stealer upx
Link:
https://tria.ge/reports/231101-q9tqzadb73/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
UPX packed file
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
80.76.51.172:8787
91.92.241.117:8787
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/879b9830c133cfc616497be434cd8f9988f91fa217e42f30afa21a2ab08ddeab

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
Rule name:UPXv20MarkusLaszloReiser
Create hunting rule
Author:malware-lu
Rule name:upx_3
Create hunting rule
Author:Kevin Falcoz
Description:UPX 3.X
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.
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

zip 879b9830c133cfc616497be434cd8f9988f91fa217e42f30afa21a2ab08ddeab

(this sample)

RemcosRAT

Executable exe 659af6c54d31cf15cdca40c29959c160e47e65254f178661f98807b649fdb596

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 659af6c54d31cf15cdca40c29959c160e47e65254f178661f98807b649fdb596
  
Dropping
RemcosRAT
  
Dropping
MD5 1197e7a27b14835cf1acf9c3cf35ca74

Comments