MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c44885d6ad1fd9ec685e1f9ab6017d9f80ba9d1762d02d79c924e49b488d23d5. 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 30 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c44885d6ad1fd9ec685e1f9ab6017d9f80ba9d1762d02d79c924e49b488d23d5
SHA3-384 hash: 6a7e0d034b274014a48c643e1e585816c5917ed12a149f6869a9d9de96f8651f0e1df443a8f144fa6b8fe9759e596f5f
SHA1 hash: 0ddbd92737cd9bb65a28dca3a65df28e39cdd491
MD5 hash: 6d37f9b3dcc6c0ae8da12d65e37ef3b1
humanhash: hamper-undress-green-october
File name:NEW ORDER RFQ ICPO%0D%0ATECNOMAT-JEAL-EN590-200KMT-RTDM+TSA.R01
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:880'187 bytes
First seen:2024-04-06 09:53:46 UTC
Last seen:2024-04-06 09:55:01 UTC
File type: r01
MIME type:application/x-rar
ssdeep 24576:o9YYQ4MCTkaGLt6w3mo5qMBpFaqQDL8VqIeI1LPtDXKCKD:w3Q4MrnLQupf/0mqIzFPZED
TLSH T1B21533C4055F689DA0E1E8F6968B3BE73A6FDA1D36C441E811B1287A5337A75FCB3006
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter cocaman
Tags:r01 RemcosRAT RFQ


Avatar
cocaman
Malicious email (T1566.001)
From: ""Robert Esparza Jr. | International Territory Manager | Boreal International
Corp" <kaia@minhvocong.com>" (likely spoofed)
Received: "from hunch.minhvocong.com (hunch.minhvocong.com [102.211.56.81]) "
Date: "Thu, 04 Apr 2024 23:56:33 -0700"
Subject: "URGENT ORDER RFQ ICPO TECNOMAT-JEAL-EN590-200KMT-RTDM+TSA"
Attachment: "NEW ORDER RFQ ICPO
TECNOMAT-JEAL-EN590-200KMT-RTDM+TSA.R01"

Intelligence

File Origin
# of uploads :
2
# of downloads :
82
Origin country :
CH CH
File Archive Information

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

File name:NEW ORDER RFQ ICPO TECNOMAT-JEAL-EN590-200KMT-RTDM+TSA.bat
File size:916'480 bytes
SHA256 hash: da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92
MD5 hash: dd172773aa5ec3bc31080bc31fce8a44
MIME type:application/x-dosexec
Signature RemcosRAT
Vendor Threat Intelligence
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade net_reactor packed packed
Link:
https://www.filescan.io/uploads/66111bbfbb285b5db0580cb7/reports/3db655b0-d52f-406f-b327-71a2fd819e6c/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c44885d6ad1fd9ec685e1f9ab6017d9f80ba9d1762d02d79c924e49b488d23d5
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/c44885d6ad1fd9ec685e1f9ab6017d9f80ba9d1762d02d79c924e49b488d23d5/
Threat name:
ByteCode-MSIL.Trojan.DarkStealerLoader
Create hunting rule
Status:
Malicious
First seen:
2024-04-05 08:27:12 UTC
File Type:
Binary (Archive)
Extracted files:
12
AV detection:
18 of 36 (50.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yreilvvnd7m6y2c6d6nlmal5t6alvhixmlic26ojetsjwsenepkq._file
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/c44885d6ad1fd9ec685e1f9ab6017d9f80ba9d1762d02d79c924e49b488d23d5

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
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_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
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:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:PureCrypter
Create hunting rule
Author:@bartblaze
Description:Identifies PureCrypter, .NET loader and obfuscator.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TeslaCryptPackedMalware
Create hunting rule
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
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:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research
Rule name:yara_template
Create hunting rule

File information

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

Malspam

RemcosRAT

r01 c44885d6ad1fd9ec685e1f9ab6017d9f80ba9d1762d02d79c924e49b488d23d5

(this sample)

RemcosRAT

Executable exe da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92
  
Dropping
RemcosRAT
  
Dropping
MD5 dd172773aa5ec3bc31080bc31fce8a44

Comments