MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 56369cd0a8b7843a6e6c9bef3de71498a19c4e4be23cacb868b8ec1d21286f36. 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: 10


Intelligence 10 IOCs YARA 9 File information Comments
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SHA256 hash: 56369cd0a8b7843a6e6c9bef3de71498a19c4e4be23cacb868b8ec1d21286f36
SHA3-384 hash: 6e3e24b78dae25b6835102adf8f57cfe70ee0b25f51cb009d75d8a2a813baebed49b4de03e6fc223cd2fdac15244e760
SHA1 hash: 9e12b021491729c4beb92c3f496a48101c90b8ae
MD5 hash: ff81ebb0ea87e9b03fe10946067f55f2
humanhash: mississippi-cardinal-west-kilo
File name:Factura Serfinanza_06888639945_84691_7738990892730_52890999_41886922051901092896848_378299483573_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'965'760 bytes
First seen:2020-12-17 09:05:50 UTC
Last seen:2020-12-17 10:29:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:fdKeHutk+u/ULMtxpnqALazOUnnjiUYhZU1D7FuxD6VOrV:ce/OOUnj4ZUDq6e
Threatray 1'235 similar samples on MalwareBazaar
TLSH 75957C14F840389F798A40B05EDB56ECE2D6311916721B398D2369BCDA1E19B7CDFCB2
Reporter abuse_ch
Tags:exe Outlook RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM11-CO1-obe.outbound.protection.outlook.com
Sending IP: 40.92.18.73
From: RUBIELA RIVERA <estacionelchorro@hotmail.com>
Subject: FACTURA EN MORA SERFINANZA.
Attachment: Factura Serfinanza_06888639945_84691_7738990892730_52890999_41886922051901092896848_378299483573.tgz (contains "Factura Serfinanza_06888639945_84691_7738990892730_52890999_41886922051901092896848_378299483573_pdf.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
259
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.ArtemisFF81EBB0EA87.6126.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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
Running batch commands
Deleting a recently created file
Sending a UDP request
Creating a file
DNS 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
Gathering data
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/565141
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
Contains functionalty to change the wallpaper
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
Multi AV Scanner detection for dropped file
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 331655 Sample: 3573_pdf.exe Startdate: 17/12/2020 Architecture: WINDOWS Score: 100 49 Multi AV Scanner detection for domain / URL 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Detected Remcos RAT 2->53 55 5 other signatures 2->55 10 3573_pdf.exe 2 2->10         started        13 PxxoServicesNet.exe 2 2->13         started        15 PxxoServicesNet.exe 2 2->15         started        process3 signatures4 57 Contains functionalty to change the wallpaper 10->57 59 Contains functionality to steal Chrome passwords or cookies 10->59 61 Contains functionality to capture and log keystrokes 10->61 67 2 other signatures 10->67 17 3573_pdf.exe 4 5 10->17         started        20 WerFault.exe 23 9 10->20         started        63 Hides threads from debuggers 13->63 65 Injects a PE file into a foreign processes 13->65 23 PxxoServicesNet.exe 13->23         started        process5 dnsIp6 39 C:\Users\user\AppData\...\PxxoServicesNet.exe, PE32 17->39 dropped 41 C:\...\PxxoServicesNet.exe:Zone.Identifier, ASCII 17->41 dropped 25 wscript.exe 1 17->25         started        47 192.168.2.1 unknown unknown 20->47 43 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 20->43 dropped file7 process8 process9 27 cmd.exe 1 25->27         started        process10 29 PxxoServicesNet.exe 2 27->29         started        32 conhost.exe 27->32         started        signatures11 69 Multi AV Scanner detection for dropped file 29->69 71 Contains functionalty to change the wallpaper 29->71 73 Machine Learning detection for dropped file 29->73 75 5 other signatures 29->75 34 PxxoServicesNet.exe 2 4 29->34         started        37 WerFault.exe 29->37         started        process12 dnsIp13 45 databasepropersonombrecomercialideasearchwords.services 186.169.43.221, 7580 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 34->45
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/56369cd0a8b7843a6e6c9bef3de71498a19c4e4be23cacb868b8ec1d21286f36/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-12-17 09:06:07 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ky3jzufiw6cdu3tmtpxt3zyutcqzytsl4i6kzodixdwb2ijin43a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1254cc962e505f7cc85e165f51c7699013a4c36bd6495aff5f9ef24f6150cff1
RemcosRAT
15170d0dbe467efc4e38156ed4e03702ae19af44c100d7df7a75c6dbdb7ac587
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
a7bba5cba33b4320a78cd057e3cdd5169a86e90f6550e997772f4447549fd729
RemcosRAT
bbdbb7ca68c199a7b030b900434d79f3fe59ab20fdb4ed910609fc5f91599c57
RemcosRAT
ca62c5cf8e6f3260dbe15a469e90197612af8843d897f65c7fdde87554ebae51
RemcosRAT
f43a96ccf1d23d7dda1abbc2bea16ecbb2fb43b2f05e4015ff69c02e2c144ab2
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 1'225 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201217-1nm75lfm6s/
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:
56369cd0a8b7843a6e6c9bef3de71498a19c4e4be23cacb868b8ec1d21286f36
MD5 hash:
ff81ebb0ea87e9b03fe10946067f55f2
SHA1 hash:
9e12b021491729c4beb92c3f496a48101c90b8ae
Link:
https://www.unpac.me/results/60c600e2-72eb-4165-b0be-ae8d345d3074/
SH256 hash:
6dc2a03a9de984086e3cdb9c803045f05c8d0ec0507033a7e33e4e4e259c489f
MD5 hash:
4add1aaaa49427730887bb5af32483e0
SHA1 hash:
0a4210856a4a1e8a2663303a770db78021ea15fa
Link:
https://www.unpac.me/results/60c600e2-72eb-4165-b0be-ae8d345d3074/
SH256 hash:
1437d414ea28f3ee2486ec178d560ef207125b6cb8f6551e00fde364355cf872
MD5 hash:
ae2b2b3b143fa117f12dcf3f7cf0d0bb
SHA1 hash:
029bcfcb58c9fed2d14381f11416061fd71f57c4
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/60c600e2-72eb-4165-b0be-ae8d345d3074/
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/56369cd0a8b7843a6e6c9bef3de71498a19c4e4be23cacb868b8ec1d21286f36

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 97b565489c8b902e2be9da9076562cf7e7dedfe1611c7a15e2db59fc46c4d307

RemcosRAT

Executable exe 56369cd0a8b7843a6e6c9bef3de71498a19c4e4be23cacb868b8ec1d21286f36

(this sample)

  
Dropped by
MD5 b1a79c930f3d7ca74a9f9dba50fdf9df
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 97b565489c8b902e2be9da9076562cf7e7dedfe1611c7a15e2db59fc46c4d307

Comments