MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 605834c1fd1e1ad6e039fa17f7de298663ab902e84a70947a15ef18d088879e8. 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: 11


Intelligence 11 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 605834c1fd1e1ad6e039fa17f7de298663ab902e84a70947a15ef18d088879e8
SHA3-384 hash: 051142a9d0c1f7a86c036a3a8bc98e35db91bfaf0e26756844b22633fe9328d9333f5080841d3d57f87a0e1e2f9b24f0
SHA1 hash: bdccba4e08fdcb0eb4881111087b04871ac9a017
MD5 hash: 86ee20d76d6fcd5411f6ac7f6087e636
humanhash: twelve-potato-bulldog-montana
File name:Quotation.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:308'736 bytes
First seen:2021-01-18 09:06:17 UTC
Last seen:2021-01-18 10:42:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 3fa489abaee814a61ce0966e1954db55 (12 x Loki, 7 x RemcosRAT, 3 x SnakeKeylogger)
ssdeep 6144:FT/4GM4T/r+1uqtxxo3zDASgwJAoCFUuHHQTyyN:x4GbT/r+XtczJgwJAvFUunQJ
Threatray 1'405 similar samples on MalwareBazaar
TLSH 5564CF3475D1C032D163253046B4CBB64EBB78766AB1B48F7BDA09BD5F246E2D62830E
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: [37.46.150.2]
Sending IP: 37.46.150.2
From: julesendkate@gmail.com
Subject: Re: Request for Quoation
Attachment: Quotation.rar (contains "Quotation.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
136
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Quotation.exe
Verdict:
Malicious activity
Analysis date:
2021-01-18 08:13:26 UTC
Tags:
rat remcos trojan keylogger stealer
Link:
https://app.any.run/tasks/af8e6f9d-a8a6-4f8d-9ac4-0c25c0aff16c

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/112515/
Detection(s):
PUA.Win.Downloader.Firseria-6804617-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Creating a file
Running batch commands
Creating a process with a hidden window
Sending a custom TCP request
Launching a process
Unauthorized injection to a recently created process
Creating a file in the %AppData% subdirectories
Sending a UDP request
Creating a process from a recently created file
Creating a window
Deleting a recently created file
DNS request
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
Sending a TCP request to an infection source
Enabling autorun by creating a file
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/583555
Signature
Antivirus detection for dropped file
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
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Uses dynamic DNS services
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 340819 Sample: Quotation.exe Startdate: 18/01/2021 Architecture: WINDOWS Score: 100 45 Multi AV Scanner detection for domain / URL 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for dropped file 2->49 51 9 other signatures 2->51 10 Quotation.exe 2 2->10         started        14 remcos.exe 1 2->14         started        16 remcos.exe 1 2->16         started        process3 file4 41 C:\Users\user\AppData\Local\Temp\...\file.exe, PE32 10->41 dropped 53 Contains functionality to steal Chrome passwords or cookies 10->53 55 Contains functionality to capture and log keystrokes 10->55 57 Contains functionality to inject code into remote processes 10->57 59 Contains functionality to steal Firefox passwords or cookies 10->59 18 Quotation.exe 4 5 10->18         started        61 Maps a DLL or memory area into another process 14->61 21 remcos.exe 14->21         started        23 remcos.exe 16->23         started        signatures5 process6 file7 37 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 18->37 dropped 39 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 18->39 dropped 25 wscript.exe 1 18->25         started        process8 process9 27 cmd.exe 1 25->27         started        process10 29 remcos.exe 1 27->29         started        32 conhost.exe 27->32         started        signatures11 63 Multi AV Scanner detection for dropped file 29->63 65 Machine Learning detection for dropped file 29->65 67 Contains functionality to steal Chrome passwords or cookies 29->67 69 3 other signatures 29->69 34 remcos.exe 2 3 29->34         started        process12 dnsIp13 43 whatgodcannotdodoestnotexist.duckdns.org 185.244.30.29, 2889, 49716 DAVID_CRAIGGG Netherlands 34->43
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/605834c1fd1e1ad6e039fa17f7de298663ab902e84a70947a15ef18d088879e8/
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mbmdjqp5dynnnybz7il7pxrjqzr2xeboqstqsr5bl3yy2ceiphua._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
00b65900131d5d5cac9d48c65ff2e53677418d7c50f0c09480af43e80845bef3
RemcosRAT
07cb866df6df9ad51ce01426b0a0466834619e72c2653ff7c25320cc3c0a3f9a
RemcosRAT
6a9beed2218eb04e929a87b8e1e1fb1f5d3197136c96b434e82f9dd62e71233c
RemcosRAT
6da5a41c6dd6f0ddc638a3bccceeae8132814f605971a2f9eb1af58040f60eb8
RemcosRAT
9888381eb68d98f0581ab81845f2fc9e15af6ba1193a131bdf60497e3a3d1247
RemcosRAT
a2925ab4b7c0267fb273b9125b81673c84525a2e974119dd6c6f3c10ac6675f5
RemcosRAT
aea8b826c919840c0757bde7e31b915fda0439bd28b10418479aa17c53f91e12
RemcosRAT
bf0e82358921791e16998b942e600a500a967f6e5c5b034a675af7e49663a34f
RemcosRAT
e7c74f89332dcf4bf0ebaa50d960a8c82a521ca2c9608ecbb13e719e9744b5ca
RemcosRAT
f05b74930aa9777625a66d2852fb0b690461ef0b5598d35b2d7959721456600d
RemcosRAT
+ 1'395 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210118-b1ljkymt52/
Behaviour
Creates scheduled task(s)
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
whatgodcannotdodoestnotexist.duckdns.org:2889
Unpacked files
SH256 hash:
605834c1fd1e1ad6e039fa17f7de298663ab902e84a70947a15ef18d088879e8
MD5 hash:
86ee20d76d6fcd5411f6ac7f6087e636
SHA1 hash:
bdccba4e08fdcb0eb4881111087b04871ac9a017
Link:
https://www.unpac.me/results/234993e8-f610-4709-9b13-beddb5ff9d22/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/605834c1fd1e1ad6e039fa17f7de298663ab902e84a70947a15ef18d088879e8

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 be2a2a77fbb78e16287fd8c4b0eb063753b73f7fcbcd72ae1d3a164f18cdb9af

RemcosRAT

Executable exe 605834c1fd1e1ad6e039fa17f7de298663ab902e84a70947a15ef18d088879e8

(this sample)

  
Dropped by
MD5 26c3fb57a75ea008ba04cadab42b9b2a
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/112515/
  
Dropped by
SHA256 be2a2a77fbb78e16287fd8c4b0eb063753b73f7fcbcd72ae1d3a164f18cdb9af

Comments