MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 13efba52e6268bbc8089e143010d3e9be11ef8c7606a6ecd32b36e9ff60d1bde. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 13efba52e6268bbc8089e143010d3e9be11ef8c7606a6ecd32b36e9ff60d1bde
SHA3-384 hash: 12008655f4e5414b7f40aec297e3859364a2609dc142006f3b83c1dcf4dfedecf884c632be16af0615b944f0f045f598
SHA1 hash: 67fdc5ae1621d50c600f8429f27750b17bfa1196
MD5 hash: 5b862afb58e54886e055d0de5110e670
humanhash: twenty-alanine-jersey-foxtrot
File name:Extracto_Serfinanza_6961345687367774173000646384_53109195241037624566418_4169709175494611875002646_3148232413313718104717_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'946'720 bytes
First seen:2020-11-20 07:40:29 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:N4hcdtphcXygaUTNunTAPUJLlMo2De3+6ukIl95RUn:8yg3unTAMd3FuT35C
Threatray 1'146 similar samples on MalwareBazaar
TLSH 8C957D14F880385F798A40F05EEB66ECA2D63529157017399D636C7CDA1E18B7CEF8B2
Reporter abuse_ch
Tags:ESP exe geo Outlook RAT RemcosRAT

Code Signing Certificate

Organisation:Eafbbcd
Issuer:Eafbbcd
Algorithm:sha256WithRSAEncryption
Valid from:Nov 19 20:25:41 2020 GMT
Valid to:Nov 19 20:25:41 2021 GMT
Serial number: FD57B68A713EEDF94EA5357448251F0E
Thumbprint Algorithm:SHA256
Thumbprint: F6D27EB215EE42C79111CE0F93C98565227087197D6417F12DDB12B3079A448C
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM11-DM6-obe.outbound.protection.outlook.com
Sending IP: 40.92.19.37
From: Factura virtual <facturavirtual12@outlook.es>
Subject: EXTRACTO SERFINANZA.
Attachment: Extracto_Serfinanza_6961345687367774173000646384_53109195241037624566418_4169709175494611875002646_3 (contains "Extracto_Serfinanza_6961345687367774173000646384_53109195241037624566418_4169709175494611875002646_3148232413313718104717_pdf.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
96
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file
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
Connection attempt
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
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/543792
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 domain / URL
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 320994 Sample: 4717_pdf.exe Startdate: 20/11/2020 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 4717_pdf.exe 2 2->11         started        14 PxxoServicesNet.exe 2 2->14         started        16 PxxoServicesNet.exe 2 2->16         started        signatures3 process4 signatures5 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 18 4717_pdf.exe 4 5 11->18         started        21 WerFault.exe 23 9 11->21         started        81 Hides threads from debuggers 14->81 83 Injects a PE file into a foreign processes 14->83 23 PxxoServicesNet.exe 14->23         started        25 WerFault.exe 14->25         started        27 PxxoServicesNet.exe 16->27         started        29 WerFault.exe 16->29         started        process6 file7 45 C:\Users\user\AppData\...\PxxoServicesNet.exe, PE32 18->45 dropped 47 C:\...\PxxoServicesNet.exe:Zone.Identifier, ASCII 18->47 dropped 31 wscript.exe 1 18->31         started        49 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 21->49 dropped process8 process9 33 cmd.exe 1 31->33         started        process10 35 PxxoServicesNet.exe 2 33->35         started        38 conhost.exe 33->38         started        signatures11 65 Machine Learning detection for dropped file 35->65 67 Contains functionality to steal Chrome passwords or cookies 35->67 69 Contains functionality to capture and log keystrokes 35->69 71 3 other signatures 35->71 40 PxxoServicesNet.exe 35->40         started        43 WerFault.exe 35->43         started        process12 dnsIp13 55 databasepropersonombrecomercialideasearchwords.services 186.169.53.6, 7580 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 40->55
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/13efba52e6268bbc8089e143010d3e9be11ef8c7606a6ecd32b36e9ff60d1bde/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-11-19 23:40:28 UTC
File Type:
PE (.Net Exe)
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cpx3uuxge2f3zaej4fbqcdj6tpqr56ghmbvg5tjswnxj75qndppa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
15170d0dbe467efc4e38156ed4e03702ae19af44c100d7df7a75c6dbdb7ac587
RemcosRAT
1b9cbd60298e5be7b6c5813a3c03bd423ae73364049848c44145b9c079fd0adc
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
a0642205ff1e99b61822f71e22da22cc91ecbde456dd2453f81084bc22547e9d
RemcosRAT
b29880b2403337ef4fb3c644c4b033327cb6e2828d28799a0cc6a708cc0afaa4
RemcosRAT
ca62c5cf8e6f3260dbe15a469e90197612af8843d897f65c7fdde87554ebae51
RemcosRAT
d7e339a5a02ec396fb568be9485047caccf6cc9ac85a8a6448410ed26a75f7e7
RemcosRAT
f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
RemcosRAT
+ 1'136 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201120-vt8lftwgrx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
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:
13efba52e6268bbc8089e143010d3e9be11ef8c7606a6ecd32b36e9ff60d1bde
MD5 hash:
5b862afb58e54886e055d0de5110e670
SHA1 hash:
67fdc5ae1621d50c600f8429f27750b17bfa1196
Link:
https://www.unpac.me/results/7215ea37-3f35-4205-84e7-f6fcdc9e0bb7/
SH256 hash:
06fddb3b1a9ef10843e718a3cdf9b6e515fdecaa63dc1f90d2b173b55b185cd4
MD5 hash:
8dc54c72c8dfa37593e95013c423bff0
SHA1 hash:
5110f573d70f825fd4a5b7f4f86b50bc6ddcbf40
Link:
https://www.unpac.me/results/7215ea37-3f35-4205-84e7-f6fcdc9e0bb7/
SH256 hash:
7723d8f02d36fb3dc493d131616043acf0afeb9de02e898cde86e4836db4530f
MD5 hash:
faee4ec7b8f6ecd62ac5d61825f3753a
SHA1 hash:
19ba7122127b008aad92b4b5492fe2c89189fecc
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/7215ea37-3f35-4205-84e7-f6fcdc9e0bb7/
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: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: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 1768de04bb55948e5d78e0e53e7b64d82c7642fc57ae291b4612e1a0185bfb86

RemcosRAT

Executable exe 13efba52e6268bbc8089e143010d3e9be11ef8c7606a6ecd32b36e9ff60d1bde

(this sample)

  
Dropped by
MD5 d82dd6ccfedec4357be7bb306b2c89d0
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 1768de04bb55948e5d78e0e53e7b64d82c7642fc57ae291b4612e1a0185bfb86

Comments