MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af551138bc3952708e41adf9d4ec58556eb243e02730d720b893246bdb857234. 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 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: af551138bc3952708e41adf9d4ec58556eb243e02730d720b893246bdb857234
SHA3-384 hash: 0e8e7a2c926ab18f94d56e8be4a140ae7d7cdd837c6dfd5a30f6bbcf8b605847491c2a14fa513ad9bb8c7773099853f5
SHA1 hash: 0bec4a323cdd70f9c3d7e3fba52b33698fd66409
MD5 hash: db11d7c5b08a08730892d9a8ea567147
humanhash: lactose-pennsylvania-november-london
File name:SEPA 2023-08-07 PDF_033293211002839277.zip
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:474'613 bytes
First seen:2023-08-15 12:16:29 UTC
Last seen:2023-08-15 12:16:51 UTC
File type: zip
MIME type:application/zip
ssdeep 12288:R3ul9WNfs/+3mXzJ7VCQW7nrgaX3xXgkKqDJCvm:4lQE/+3K8QenMaX3mNyYm
TLSH T1E6A423BBACEC09865D358F95D1E1FB34254470CF2DB847B649187698BF4C8709B4E0EA
TrID 80.0% (.ZIP) ZIP compressed archive (4000/1)
20.0% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter cocaman
Tags:RemcosRAT zip


Avatar
cocaman
Malicious email (T1566.001)
From: "Dorso Juan <juan.dorsogvfi.ch@mail.com>" (likely spoofed)
Received: "from hosted-by.rootlayer.net (unknown [45.137.22.123]) "
Date: "7 Aug 2023 11:01:25 +0200"
Subject: "Re: Zahlungshinweis"
Attachment: "SEPA 2023-08-07 PDF_033293211002839277.zip"

Intelligence

File Origin
# of uploads :
2
# of downloads :
95
Origin country :
CH CH
File Archive Information

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

File name:SEPA 2023-08-07 PDF_033293211002839277.exe
File size:488'575 bytes
SHA256 hash: 8167261af1cde7e03bd2ddf43ebde21bda4af66216d2c4ee9ca1c967e580f7a5
MD5 hash: c56567facccf39a8ecf48f58d99ee961
MIME type:application/x-dosexec
Signature RemcosRAT
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.28885.BadCo.UNOFFICIAL
Create hunting rule

Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/af551138bc3952708e41adf9d4ec58556eb243e02730d720b893246bdb857234/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control lolbin overlay packed remcos shell32
Link:
https://www.filescan.io/uploads/64db6cbfa5c3e653be19bcb3/reports/c6627f57-7b01-477c-98a1-69331d13c0ec/overview
Verdict:
Malicious
Link:
https://www.hybrid-analysis.com/sample/af551138bc3952708e41adf9d4ec58556eb243e02730d720b893246bdb857234
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/af551138bc3952708e41adf9d4ec58556eb243e02730d720b893246bdb857234
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/af551138bc3952708e41adf9d4ec58556eb243e02730d720b893246bdb857234/
Threat name:
Win32.Trojan.Strab
Create hunting rule
Status:
Malicious
First seen:
2023-08-07 10:01:09 UTC
File Type:
Binary (Archive)
Extracted files:
4
AV detection:
26 of 38 (68.42%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=v5krcof4hfjhbdsbvx45j3cykvxleq7ae4ynoifysmsgxw4foi2a._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost persistence rat
Link:
https://tria.ge/reports/230815-pqmb4sag24/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
64.112.85.218:4888
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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

zip af551138bc3952708e41adf9d4ec58556eb243e02730d720b893246bdb857234

(this sample)

RemcosRAT

Executable exe 8167261af1cde7e03bd2ddf43ebde21bda4af66216d2c4ee9ca1c967e580f7a5

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 8167261af1cde7e03bd2ddf43ebde21bda4af66216d2c4ee9ca1c967e580f7a5
  
Dropping
RemcosRAT
  
Dropping
MD5 c56567facccf39a8ecf48f58d99ee961

Comments