MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 936027b0c02941505eb900045a050c0806b30a8d49c7d34fff9eff42a8168b27. 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: 936027b0c02941505eb900045a050c0806b30a8d49c7d34fff9eff42a8168b27
SHA3-384 hash: 868c1e6ccfa34100ae46becb64611006fa1672e07959afbd36ec0cdda74af562a03154a07dbe2fdd92f2518ae5827c6a
SHA1 hash: 7c15494e27d07af0005898d0c2331dfcb00d412f
MD5 hash: 84c46410f77862accd97fe0c405b544a
humanhash: nineteen-red-cardinal-solar
File name:Adjunto_Extracto_418959787987943996849520790_14002695581661652004972689_8860076098794497258031_05524902802403175252318_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'947'264 bytes
First seen:2020-11-19 06:51:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'207 x SnakeKeylogger)
ssdeep 24576:IQ70c53kIXBrg4LUu2+20UM0I2wnDIR3PIIivD1EW7f/:xXXBrN52d0b1nDIVPIIa1EW7n
Threatray 1'132 similar samples on MalwareBazaar
TLSH CF956B54F84438AF7A9A40F05EE756E8E2D67118163027399C63687CDB1E14B7CEF8B2
Reporter abuse_ch
Tags:exe Outlook RAT RemcosRAT

Code Signing Certificate

Organisation:Ceffdaeacadaaebbeecddf
Issuer:Ceffdaeacadaaebbeecddf
Algorithm:sha256WithRSAEncryption
Valid from:Nov 18 22:00:44 2020 GMT
Valid to:Nov 18 22:00:44 2021 GMT
Serial number: 6C01C7F650977A3E126AE2B53E3DA149
Thumbprint Algorithm:SHA256
Thumbprint: 4D8D82DD044A4739C9C826994DC90C7EAE87C294503D8D1489AEC7DB29F36E9C
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM02-BL2-obe.outbound.protection.outlook.com
Sending IP: 40.92.3.64
From: info. Extracto <tesoreria32procolombia@outlook.es>
Subject: EXTRACTO SERFINANZA.
Attachment: Adjunto_Extracto_418959787987943996849520790_14002695581661652004972689_8860076098794497258031_05524 (contains "Adjunto_Extracto_418959787987943996849520790_14002695581661652004972689_8860076098794497258031_05524902802403175252318_pdf.exe")

RemcosRAT C2:
databasepropersonombrecomercialideasearchwords.services:7580

Intelligence

File Origin
# of uploads :
1
# of downloads :
104
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Creating a process from a recently created file
Creating a process with a hidden window
Launching the default Windows debugger (dwwin.exe)
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/542665
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 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: 320429 Sample: 2318_pdf.exe Startdate: 19/11/2020 Architecture: WINDOWS Score: 100 52 databasepropersonombrecomercialideasearchwords.services 2->52 58 Malicious sample detected (through community Yara rule) 2->58 60 Multi AV Scanner detection for submitted file 2->60 62 Detected Remcos RAT 2->62 64 5 other signatures 2->64 11 2318_pdf.exe 2 2->11         started        14 PxxoServicesNet.exe 2 2->14         started        16 PxxoServicesNet.exe 2 2->16         started        signatures3 process4 signatures5 74 Contains functionality to steal Chrome passwords or cookies 11->74 76 Contains functionality to capture and log keystrokes 11->76 78 Contains functionality to inject code into remote processes 11->78 80 Contains functionality to steal Firefox passwords or cookies 11->80 18 2318_pdf.exe 4 5 11->18         started        21 WerFault.exe 23 9 11->21         started        82 Hides threads from debuggers 14->82 84 Injects a PE file into a foreign processes 14->84 24 PxxoServicesNet.exe 14->24         started        26 WerFault.exe 14->26         started        28 PxxoServicesNet.exe 16->28         started        30 WerFault.exe 16->30         started        process6 dnsIp7 46 C:\Users\user\AppData\...\PxxoServicesNet.exe, PE32 18->46 dropped 48 C:\...\PxxoServicesNet.exe:Zone.Identifier, ASCII 18->48 dropped 32 wscript.exe 1 18->32         started        54 192.168.2.1 unknown unknown 21->54 50 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 21->50 dropped file8 process9 process10 34 cmd.exe 1 32->34         started        process11 36 PxxoServicesNet.exe 2 34->36         started        39 conhost.exe 34->39         started        signatures12 66 Multi AV Scanner detection for dropped file 36->66 68 Machine Learning detection for dropped file 36->68 70 Contains functionality to steal Chrome passwords or cookies 36->70 72 4 other signatures 36->72 41 PxxoServicesNet.exe 36->41         started        44 WerFault.exe 36->44         started        process13 dnsIp14 56 databasepropersonombrecomercialideasearchwords.services 186.169.53.6, 49736, 49737, 49738 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 41->56
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/936027b0c02941505eb900045a050c0806b30a8d49c7d34fff9eff42a8168b27/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-11-19 06:52:08 UTC
File Type:
PE (.Net Exe)
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=snqcpmgaffavaxvzaacfubimbadlgcunjhd5gt77t37ufkawrmtq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
046ff9f608525faf76e353263ddad485e547ff4797b183ddd850f0f2c8209f91
RemcosRAT
1a1a49629b078b28852b0c9de34d8581ddb2c06bf09950bc4fc07262b65f72a7
RemcosRAT
4579780c18fb273fd0884237c7a4021dbbb38494194d8c1840449e8a62d29251
RemcosRAT
485c1301f4bc84bc2d274f53222cf7ca5fbd8af8728d1aaa977a6574f577fb87
RemcosRAT
5fcc312a31029c692e592e1b70ec22e1008cfb3df910ab2fec80a193d420fe08
RemcosRAT
833b575dac3a049ede0d27e2ff801d2e8d647cf04006f0037e1a9c71d7c8ace4
RemcosRAT
ab9041fe7e0a4a439521d6eb01cc16d74c00a0427c86b067120ac453ba7329d9
RemcosRAT
d5e7d49983a219e75540be866377c4b283614a31e41f9e5223ab6ad18a1cfe61
RemcosRAT
e32decb9aac454a38a186b4f7bc59e471c78e2cf6a5fff25c0d8b68d1c46805c
RemcosRAT
ea7caecf45fc75ba512efd3cf878800893c2a43ae66fc0a9a452687ba26c1025
RemcosRAT
+ 1'122 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201119-yy8v2mcy2j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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:
936027b0c02941505eb900045a050c0806b30a8d49c7d34fff9eff42a8168b27
MD5 hash:
84c46410f77862accd97fe0c405b544a
SHA1 hash:
7c15494e27d07af0005898d0c2331dfcb00d412f
Link:
https://www.unpac.me/results/e52b7413-071d-4d0b-973e-a4e9543a3461/
SH256 hash:
a659b611ee858979c9431b4ca33518b5d00f46b682aef488bcdfefe330b6ef0d
MD5 hash:
dad3adda26a44a0513f4538c6e9af238
SHA1 hash:
1c4b09e32371cb79e5272ca5555791ee5be05399
Link:
https://www.unpac.me/results/e52b7413-071d-4d0b-973e-a4e9543a3461/
SH256 hash:
bc06001368543dbc0ec6eca1c9c388c4d41e2cf7a0723dea276b70ded864cb32
MD5 hash:
8fe615497126845b39d460371f28ab6f
SHA1 hash:
f579414fb7b59ad68cbbb72dcf433615a89d001b
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/e52b7413-071d-4d0b-973e-a4e9543a3461/
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 2ab9a927ad94b422a58b9e3121fd16c5ca650590d22a709093389d65d19b5699

RemcosRAT

Executable exe 936027b0c02941505eb900045a050c0806b30a8d49c7d34fff9eff42a8168b27

(this sample)

  
Dropped by
MD5 7dc0f1ea5c59da519550c0b2c70ee7b3
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 2ab9a927ad94b422a58b9e3121fd16c5ca650590d22a709093389d65d19b5699

Comments