MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3bc677cc5b49e7b46557a8ae8989658466afe3f62926c720499a90875760280d. 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: 12


Intelligence 12 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3bc677cc5b49e7b46557a8ae8989658466afe3f62926c720499a90875760280d
SHA3-384 hash: 71a7edbbeca41032656e75847321c4c8cf8dc3b3ec79e498363b6fa3e6caa1bdc935571ef299f1730c1538ae417888d9
SHA1 hash: 0963fc3d7b83852eb496439c995c62c6deba0f5a
MD5 hash: b0cd11cdb27c3873c167849f66575ea1
humanhash: april-stream-don-summer
File name:EXTRACTO_737924291220762182246268907_3822663133497501986368736_9940134058811066675377_473763591607720347120446_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'996'800 bytes
First seen:2020-12-18 08:31:50 UTC
Last seen:2020-12-18 10:50:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:IGLaXhazkrm8p5R/ddjC19Muf/pBd0M80fZdD/cil:gXIzE/ddjiHf/dbfZdD/cil
Threatray 1'238 similar samples on MalwareBazaar
TLSH A6955B51F840358FF58A40B09EE756E8A2D635192636173A8C63297CE91E14B7CEFCB3
Reporter abuse_ch
Tags:ESP exe geo Outlook RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM10-DM6-obe.outbound.protection.outlook.com
Sending IP: 40.92.41.107
From: info. Extracto <cobranzalatinoltda36@hotmail.com>
Subject: FACTURA EN MORA, REPORTE NEGATIVO EN DATACREDITO
Attachment: EXTRACTO_737924291220762182246268907_3822663133497501986368736_9940134058811066675377_47376359160772 (contains "EXTRACTO_737924291220762182246268907_3822663133497501986368736_9940134058811066675377_473763591607720347120446_pdf.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
121
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
5d71bfaf-39ce-4ff1-a73e-4e684bc40774
Verdict:
Malicious activity
Analysis date:
2020-12-18 08:32:25 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/b4afbcab-9679-4665-9852-99b7866b5478

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/108325/
Detection(s):
SecuriteInfo.com.ArtemisB0CD11CDB27C.10424.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Launching the default Windows debugger (dwwin.exe)
Creating a process from a recently created file
Creating a process with a hidden window
Creating a window
Deleting a recently created file
Running batch commands
DNS request
Sending a UDP request
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Connection attempt to an infection source
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/566209
Signature
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 332189 Sample: 0446_pdf.exe Startdate: 18/12/2020 Architecture: WINDOWS Score: 100 53 databasepropersonombrecomercialideasearchwords.services 2->53 59 Malicious sample detected (through community Yara rule) 2->59 61 Multi AV Scanner detection for submitted file 2->61 63 Detected Remcos RAT 2->63 65 5 other signatures 2->65 11 0446_pdf.exe 2 2->11         started        14 PxxoServicesNet.exe 2 2->14         started        16 PxxoServicesNet.exe 2 2->16         started        signatures3 process4 signatures5 75 Contains functionality to steal Chrome passwords or cookies 11->75 77 Contains functionality to capture and log keystrokes 11->77 79 Contains functionality to inject code into remote processes 11->79 81 Contains functionality to steal Firefox passwords or cookies 11->81 18 0446_pdf.exe 4 5 11->18         started        21 WerFault.exe 23 9 11->21         started        23 0446_pdf.exe 11->23         started        83 Hides threads from debuggers 14->83 85 Injects a PE file into a foreign processes 14->85 25 PxxoServicesNet.exe 14->25         started        27 WerFault.exe 14->27         started        29 PxxoServicesNet.exe 16->29         started        31 WerFault.exe 16->31         started        process6 file7 47 C:\Users\user\AppData\...\PxxoServicesNet.exe, PE32 18->47 dropped 49 C:\...\PxxoServicesNet.exe:Zone.Identifier, ASCII 18->49 dropped 33 wscript.exe 1 18->33         started        51 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 21->51 dropped process8 process9 35 cmd.exe 1 33->35         started        process10 37 PxxoServicesNet.exe 2 35->37         started        40 conhost.exe 35->40         started        signatures11 67 Multi AV Scanner detection for dropped file 37->67 69 Machine Learning detection for dropped file 37->69 71 Contains functionality to steal Chrome passwords or cookies 37->71 73 3 other signatures 37->73 42 PxxoServicesNet.exe 2 4 37->42         started        45 WerFault.exe 37->45         started        process12 dnsIp13 55 databasepropersonombrecomercialideasearchwords.services 186.169.45.206, 49755, 49756, 49757 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 42->55 57 192.168.2.1 unknown unknown 42->57
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3bc677cc5b49e7b46557a8ae8989658466afe3f62926c720499a90875760280d/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-12-18 06:16:03 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hpdhptc3jht3izkxvcxitclfqrtk7y7wfetmoicjtkiiov3afagq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
843326e8aabda8025975ae55e6d36fcd8bb79e2e1a5f25e86303b82f16c3bac5
RemcosRAT
b8bcf3a59b89b2ebc0fb7cfba5f8f726de83b08acd072b55c557cf89d16210c9
RemcosRAT
c14895a7d0ca2633b565af7c08e77aef32397f4fdc78fd3560d2f23d89aa6d6a
RemcosRAT
e1865abf21c3b8f3b3d15e6c6e477468941f9e65700ceaaa0f4cb269d967c83e
RemcosRAT
f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 1'228 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201218-eeftrn3zsx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
ServiceHost packer
Remcos
Malware Config
C2 Extraction:
databasepropersonombrecomercialideasearchwords.services:7580
Unpacked files
SH256 hash:
3bc677cc5b49e7b46557a8ae8989658466afe3f62926c720499a90875760280d
MD5 hash:
b0cd11cdb27c3873c167849f66575ea1
SHA1 hash:
0963fc3d7b83852eb496439c995c62c6deba0f5a
Link:
https://www.unpac.me/results/e0bd7479-cd74-4693-838a-1bf413f19aa5/
SH256 hash:
f33f1c233bf5dee4e5883a0748527ea821a5a108d6ad6c37a0d4b8a135654326
MD5 hash:
522f26465aa391d095d00bce16eff28e
SHA1 hash:
024272278d697f97611cc17c46645d48416fc9b0
Link:
https://www.unpac.me/results/e0bd7479-cd74-4693-838a-1bf413f19aa5/
SH256 hash:
840ebb905dc3a5c5da949294f5b917419ec731440f47f9dec1bc182cf78a47d1
MD5 hash:
8583b53105bab2468cd0b45200a90c22
SHA1 hash:
66d8955e14b540e2f5fa7f77e89b5dea0398f491
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/e0bd7479-cd74-4693-838a-1bf413f19aa5/
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/3bc677cc5b49e7b46557a8ae8989658466afe3f62926c720499a90875760280d

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

RemcosRAT

rar 7283c56e28671f35144c017d4e132416e0f5910ef723f31dacb693ed4ee13312

RemcosRAT

Executable exe 3bc677cc5b49e7b46557a8ae8989658466afe3f62926c720499a90875760280d

(this sample)

  
Dropped by
MD5 6b1c071b19e98ebb61c07cb42a9db7ad
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 7283c56e28671f35144c017d4e132416e0f5910ef723f31dacb693ed4ee13312
Cape
Cape
https://www.capesandbox.com/analysis/108325/

Comments