MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c18f07d962d9753b946c6aa1b3af535f55c3cdc15e55fa647546a4cfd09796ca. 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: c18f07d962d9753b946c6aa1b3af535f55c3cdc15e55fa647546a4cfd09796ca
SHA3-384 hash: 09850db7c00baf34c87abd05c91f884251fd4ba05b8e9abc51c69e864ac93729cec3667467f1e01e11829d63a5852fb2
SHA1 hash: c3dc0ab54014b13bd00cdcdf93b46441ca25c83d
MD5 hash: 7e0cf5dc618d5b851c465b683184485d
humanhash: ink-cat-avocado-fifteen
File name:Factura Serfinanza_031796927323_096721_5976158998367620_326563_08900792964825324_20917639155821_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'199'616 bytes
First seen:2020-12-28 07:55:44 UTC
Last seen:2020-12-28 09:29:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'647 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 12288:DWDvUPCDX5gt8RSrxDLv0GlBhI5cb4Abbqk/GyqW+hZcjUTRdRL58vVMGdpbqr8+:tCCCCCKCCCCCKCCCCCKCCCCCKCCCCC
Threatray 1'287 similar samples on MalwareBazaar
TLSH 0D454D02498168CBD7B2D0B0A38DC2D6B38799DCE7EA6FD4AE10E21531CD477EB69D41
Reporter abuse_ch
Tags:eo ESP exe Outlook RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM02-BL2-obe.outbound.protection.outlook.com
Sending IP: 40.92.3.50
From: German Lopez Gallego <videomarcas@hotmail.com>
Subject: FACTURA EN MORA SERFINANZA.
Attachment: Factura Serfinanza_031796927323_096721_5976158998367620_326563_08900792964825324_20917639155821.tgz (contains "Factura Serfinanza_031796927323_096721_5976158998367620_326563_08900792964825324_20917639155821_pdf.exe")

RemcosRAT C2:
databasepropersonombrecomercialideasearchwords.services

Intelligence

File Origin
# of uploads :
2
# of downloads :
513
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Factura Serfinanza_031796927323_096721_5976158998367620_326563_08900792964825324_20917639155821_pdf.exe
Verdict:
Malicious activity
Analysis date:
2020-12-28 07:56:38 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/1ed5ddc9-20f5-4fe5-9261-36d61eb149bc

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.28534.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
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/570610
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
Contains functionalty to change the wallpaper
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
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: 334364 Sample: 5821_pdf.exe Startdate: 28/12/2020 Architecture: WINDOWS Score: 100 51 g.msn.com 2->51 55 Multi AV Scanner detection for domain / URL 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 Multi AV Scanner detection for submitted file 2->59 61 6 other signatures 2->61 11 5821_pdf.exe 3 2->11         started        15 PxxoServicesTrialNet.exe 2 2->15         started        17 PxxoServicesTrialNet.exe 2->17         started        signatures3 process4 file5 47 C:\Users\user\AppData\...\5821_pdf.exe.log, ASCII 11->47 dropped 63 Contains functionalty to change the wallpaper 11->63 65 Contains functionality to steal Chrome passwords or cookies 11->65 67 Contains functionality to capture and log keystrokes 11->67 71 2 other signatures 11->71 19 5821_pdf.exe 4 5 11->19         started        69 Injects a PE file into a foreign processes 15->69 22 PxxoServicesTrialNet.exe 15->22         started        24 PxxoServicesTrialNet.exe 17->24         started        signatures6 process7 file8 43 C:\Users\user\...\PxxoServicesTrialNet.exe, PE32 19->43 dropped 45 PxxoServicesTrialNet.exe:Zone.Identifier, ASCII 19->45 dropped 26 wscript.exe 1 19->26         started        process9 process10 28 cmd.exe 1 26->28         started        process11 30 PxxoServicesTrialNet.exe 3 28->30         started        34 conhost.exe 28->34         started        file12 49 C:\Users\...\PxxoServicesTrialNet.exe.log, ASCII 30->49 dropped 73 Multi AV Scanner detection for dropped file 30->73 75 Contains functionalty to change the wallpaper 30->75 77 Machine Learning detection for dropped file 30->77 79 4 other signatures 30->79 36 PxxoServicesTrialNet.exe 2 4 30->36         started        39 PxxoServicesTrialNet.exe 30->39         started        41 PxxoServicesTrialNet.exe 30->41         started        signatures13 process14 dnsIp15 53 databasepropersonombrecomercialideasearchwords.services 186.169.72.153, 7680 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 36->53
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c18f07d962d9753b946c6aa1b3af535f55c3cdc15e55fa647546a4cfd09796ca/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-12-28 07:56:08 UTC
AV detection:
14 of 28 (50.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yghqpwlc3f2txfdmnkq3hl2tl5k4htoblzk7uzdvi2sm7uexs3fa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1069419faac2c4882be82f4887684652184d9a974a2bc7cf9444d80bfb0350f8
RemcosRAT
3f1a2ec195c60a1f8789ac36368ae30a2b187858c957115bf88f40344bf0e6fa
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
b8bcf3a59b89b2ebc0fb7cfba5f8f726de83b08acd072b55c557cf89d16210c9
RemcosRAT
dcbeec8679aa3888a03add3d6222cf2f9d2997a3221386f57ff3066ef4457465
RemcosRAT
e1865abf21c3b8f3b3d15e6c6e477468941f9e65700ceaaa0f4cb269d967c83e
RemcosRAT
ece0f92110b68a8d7cd1d4a3099011d26d57670923e9e20328def2553ab69cbc
RemcosRAT
f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
RemcosRAT
+ 1'277 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-e5svjtgt3a/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious use of SetWindowsHookEx
Suspicious use of SetThreadContext
Adds Run key to start application
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
databasepropersonombrecomercialideasearchwords.services:7680
Unpacked files
SH256 hash:
c18f07d962d9753b946c6aa1b3af535f55c3cdc15e55fa647546a4cfd09796ca
MD5 hash:
7e0cf5dc618d5b851c465b683184485d
SHA1 hash:
c3dc0ab54014b13bd00cdcdf93b46441ca25c83d
Link:
https://www.unpac.me/results/26c2c9d4-f997-40a5-a30f-50e48811fb8a/
SH256 hash:
151fbd7168204bc1e694391bfd70720b5ec5f71462435e66e7509e6b0230b149
MD5 hash:
c5d3d1638327fe3480be643fc1a7158f
SHA1 hash:
b454b78bdd95bf77290b3ec6887452304cfb6a66
Link:
https://www.unpac.me/results/26c2c9d4-f997-40a5-a30f-50e48811fb8a/
SH256 hash:
717cc725f358729d8f0da242d5bbb847c17271a9f1405d12bdb125f9aee35e5d
MD5 hash:
ba4e9028b0ad911fd3a9aadb458e372d
SHA1 hash:
0835ede68df8e619f2e3751af52d001e48f0031f
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/26c2c9d4-f997-40a5-a30f-50e48811fb8a/
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/c18f07d962d9753b946c6aa1b3af535f55c3cdc15e55fa647546a4cfd09796ca

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 f9549cef56f7bce99ea336193a17412c17c944945d2e26cdf1942d24c77c99fd

RemcosRAT

Executable exe c18f07d962d9753b946c6aa1b3af535f55c3cdc15e55fa647546a4cfd09796ca

(this sample)

  
Dropped by
MD5 8d57b5145d3a5174149918a8b615be96
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 f9549cef56f7bce99ea336193a17412c17c944945d2e26cdf1942d24c77c99fd

Comments