MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7fbc66a1484382bd80fc757b9b0fd0e27f47e99d0cccb5c6a101597af82593fa. 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
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SHA256 hash: 7fbc66a1484382bd80fc757b9b0fd0e27f47e99d0cccb5c6a101597af82593fa
SHA3-384 hash: 60e035e7d0a520c6d2e3de30b264189373c0c81bb5071d5df977de6c187e31a9cdf499e8094f07ee0fd30ca4aee105be
SHA1 hash: ce73197898e3fa0ec3698f1109f0978ac3e666ee
MD5 hash: ca49e6c9201fc0829a47d7e95901417e
humanhash: december-steak-zulu-earth
File name:Extracto_Adjunto_575335140974482750538658_9084247281065518948_520502051621730356095293964768_7338852805637669935222645_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'133'056 bytes
First seen:2020-12-28 08:01:43 UTC
Last seen:2020-12-28 09:28:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'481 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:Z6AWCCCCCKCCCCCKCCCCCKCCCCCKCCCCC:Z
Threatray 1'289 similar samples on MalwareBazaar
TLSH 7B355C02498168CBD7B2D0B0A34DC2D6B38799DCE7EA5FD4AE20E21532CD477EB69D41
Reporter abuse_ch
Tags:ESP exe geo Outlook RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM11-BN8-obe.outbound.protection.outlook.com
Sending IP: 40.92.20.37
From: info. Extracto <tesoreria77procolombia@outlook.es>
Subject: FACTURA EN MORA, REPORTE NEGATIVO EN DATACREDITO
Attachment: Extracto_Adjunto_575335140974482750538658_9084247281065518948_520502051621730356095293964768_7338852 (contains "Extracto_Adjunto_575335140974482750538658_9084247281065518948_520502051621730356095293964768_7338852805637669935222645_pdf.exe")

RemcosRAT C2:
databasepropersonombrecomercialideasearchwords.services

Intelligence

File Origin
# of uploads :
2
# of downloads :
511
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
0b1a1fcb-1382-4698-a93c-1dece3f5e719
Verdict:
Malicious activity
Analysis date:
2020-12-28 08:06:08 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/5ba7e375-10a3-4e13-9b24-d79b09c5c26f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.tz.11738.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
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:
MALICIOUS
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/570591
Signature
.NET source code contains very large strings
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
Detected Remcos RAT
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 domain / URL
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 334354 Sample: 2645_pdf.exe Startdate: 28/12/2020 Architecture: WINDOWS Score: 100 51 databasepropersonombrecomercialideasearchwords.services 2->51 53 g.msn.com 2->53 57 Multi AV Scanner detection for domain / URL 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 Detected Remcos RAT 2->61 63 5 other signatures 2->63 11 2645_pdf.exe 3 2->11         started        15 PxxoServicesTrialNet.exe 2->15         started        17 PxxoServicesTrialNet.exe 2 2->17         started        signatures3 process4 file5 49 C:\Users\user\AppData\...\2645_pdf.exe.log, ASCII 11->49 dropped 73 Contains functionality to steal Chrome passwords or cookies 11->73 75 Contains functionality to capture and log keystrokes 11->75 77 Contains functionality to inject code into remote processes 11->77 79 Contains functionality to steal Firefox passwords or cookies 11->79 19 2645_pdf.exe 4 5 11->19         started        22 2645_pdf.exe 11->22         started        81 Injects a PE file into a foreign processes 15->81 24 PxxoServicesTrialNet.exe 15->24         started        26 PxxoServicesTrialNet.exe 15->26         started        28 PxxoServicesTrialNet.exe 17->28         started        signatures6 process7 file8 45 C:\Users\user\...\PxxoServicesTrialNet.exe, PE32 19->45 dropped 47 PxxoServicesTrialNet.exe:Zone.Identifier, ASCII 19->47 dropped 30 wscript.exe 1 19->30         started        process9 process10 32 cmd.exe 1 30->32         started        process11 34 PxxoServicesTrialNet.exe 3 32->34         started        38 conhost.exe 32->38         started        file12 43 C:\Users\...\PxxoServicesTrialNet.exe.log, ASCII 34->43 dropped 65 Machine Learning detection for dropped file 34->65 67 Contains functionality to steal Chrome passwords or cookies 34->67 69 Contains functionality to capture and log keystrokes 34->69 71 2 other signatures 34->71 40 PxxoServicesTrialNet.exe 2 4 34->40         started        signatures13 process14 dnsIp15 55 databasepropersonombrecomercialideasearchwords.services 186.169.72.153, 7680 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 40->55
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7fbc66a1484382bd80fc757b9b0fd0e27f47e99d0cccb5c6a101597af82593fa/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-12-28 08:02:10 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=p66gnikiiobl3ah4ov5zwd6q4j7up2m5btgllrvbafmxv6bfsp5a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
483ceb8e56d7a31cab2e789ddb77c34107700904d40a0dcf60552b56a4c3e911
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
b8bcf3a59b89b2ebc0fb7cfba5f8f726de83b08acd072b55c557cf89d16210c9
RemcosRAT
c18f07d962d9753b946c6aa1b3af535f55c3cdc15e55fa647546a4cfd09796ca
RemcosRAT
c4474ec3fff006547f07255d6934d846e5a298a97a38aff50fcc95e92ee9dfcb
RemcosRAT
e1865abf21c3b8f3b3d15e6c6e477468941f9e65700ceaaa0f4cb269d967c83e
RemcosRAT
ece0f92110b68a8d7cd1d4a3099011d26d57670923e9e20328def2553ab69cbc
RemcosRAT
f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
RemcosRAT
+ 1'279 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201228-mv9prergbe/
Behaviour
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
databasepropersonombrecomercialideasearchwords.services:7680
Unpacked files
SH256 hash:
7fbc66a1484382bd80fc757b9b0fd0e27f47e99d0cccb5c6a101597af82593fa
MD5 hash:
ca49e6c9201fc0829a47d7e95901417e
SHA1 hash:
ce73197898e3fa0ec3698f1109f0978ac3e666ee
Link:
https://www.unpac.me/results/1c50eeb9-e62f-4318-bf55-ba195d29a499/
SH256 hash:
930444cfceb89b8d7914082874e04c80c36999e7b85e560b694cb47d0757770a
MD5 hash:
731bd020898576e88d66578f08e1588f
SHA1 hash:
8fd4698923e767289d07ae7e05dc6e34f94bdcf8
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/1c50eeb9-e62f-4318-bf55-ba195d29a499/
SH256 hash:
b8ce58d1a11eb0f18b55fb52a897f5ce53c10ca0a3efcf7af4aac80dd935ada1
MD5 hash:
4c7f7e150d6dfb004b756430ad3ac159
SHA1 hash:
0cae77b73250b1d33d3952a54dc95b3a657928b3
Link:
https://www.unpac.me/results/1c50eeb9-e62f-4318-bf55-ba195d29a499/
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/7fbc66a1484382bd80fc757b9b0fd0e27f47e99d0cccb5c6a101597af82593fa

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 7add6350f70b99581a03183bd260bcf41c5e9efa284c48263d86f21caf8c042e

RemcosRAT

Executable exe 7fbc66a1484382bd80fc757b9b0fd0e27f47e99d0cccb5c6a101597af82593fa

(this sample)

  
Dropped by
MD5 ea7309cd7cf28d7246cc6d8e1a5075f1
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 7add6350f70b99581a03183bd260bcf41c5e9efa284c48263d86f21caf8c042e

Comments