MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe. 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: f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
SHA3-384 hash: 7e777ffe40836727d2808eda8382ef38890c57bce17afa83babd9fe10037058c9639d4f97529014148c514258d8fd2d3
SHA1 hash: 38997d78b47408cf53de7a218c8b575d805da9d4
MD5 hash: 24e4c8739017f0797882d029cb6350b8
humanhash: comet-hamper-cardinal-twenty
File name:Cobro Juridico_0356065519_386993_366879106856695652_279042970_6819295296394370_168730221494_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'945'272 bytes
First seen:2020-11-19 07:21:09 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:fdtokJ6uHdLRJvLXYFoFQQXzvF6M0+joWFZLZD:DtZRBsFWbcoocNB
Threatray 1'136 similar samples on MalwareBazaar
TLSH 5D957B14F844385F7A8A40F05FDBA6E8D1D63218167127398D6368BCEA1E15B7CEF872
Reporter abuse_ch
Tags:exe Outlook RAT RemcosRAT

Code Signing Certificate

Organisation:Ddbeeeeaebcaecd
Issuer:Ddbeeeeaebcaecd
Algorithm:sha256WithRSAEncryption
Valid from:Nov 18 22:07:44 2020 GMT
Valid to:Nov 18 22:07:44 2021 GMT
Serial number: 5EB07C94CAAF814F96CEAB77EC98EBCE
Thumbprint Algorithm:SHA256
Thumbprint: E32E5E43D7A9EA372B8CE9737251EB76958F431CD48496111C3D60316B953BB3
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: EUR04-VI1-obe.outbound.protection.outlook.com
Sending IP: 40.92.75.102
From: Prima Donna sas <primadonna2018@hotmail.com>
Subject: COBRO JURIDICO SERFINANZA.
Attachment: Cobro Juridico_0356065519_386993_366879106856695652_279042970_6819295296394370_168730221494.tgz (contains "Cobro Juridico_0356065519_386993_366879106856695652_279042970_6819295296394370_168730221494_pdf.exe")

RemcosRAT C2:
databasepropersonombrecomercialideasearchwords.services:7580 (186.169.53.6)

Intelligence

File Origin
# of uploads :
1
# of downloads :
111
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a process with a hidden window
Creating a window
Deleting a recently created file
Running batch commands
DNS request
Connection attempt
Launching the default Windows debugger (dwwin.exe)
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 in the %temp% directory
Creating a file
Creating a process from a recently created file
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
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/542362
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 dnsIp2 2 Behavior Graph ID: 320276 Sample: Cobro Juridico_0356065519_3... Startdate: 19/11/2020 Architecture: WINDOWS Score: 100 48 databasepropersonombrecomercialideasearchwords.services 2->48 62 Multi AV Scanner detection for domain / URL 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Detected Remcos RAT 2->66 68 10 other signatures 2->68 11 Cobro Juridico_0356065519_386993_366879106856695652_279042970_6819295296394370_168730221494_pdf.exe 2 2->11         started        14 PxxoServicesNet.exe 2 2->14         started        16 PxxoServicesNet.exe 2 2->16         started        signatures3 process4 signatures5 70 Hides threads from debuggers 11->70 72 Injects a PE file into a foreign processes 11->72 18 Cobro Juridico_0356065519_386993_366879106856695652_279042970_6819295296394370_168730221494_pdf.exe 4 5 11->18         started        21 WerFault.exe 23 9 11->21         started        24 PxxoServicesNet.exe 14->24         started        26 WerFault.exe 14->26         started        28 PxxoServicesNet.exe 16->28         started        process6 dnsIp7 44 C:\Users\user\AppData\...\PxxoServicesNet.exe, PE32 18->44 dropped 46 C:\...\PxxoServicesNet.exe:Zone.Identifier, ASCII 18->46 dropped 30 wscript.exe 1 18->30         started        50 192.168.2.1 unknown unknown 21->50 file8 process9 process10 32 cmd.exe 1 30->32         started        process11 34 PxxoServicesNet.exe 2 32->34         started        37 conhost.exe 32->37         started        signatures12 54 Multi AV Scanner detection for dropped file 34->54 56 Contains functionalty to change the wallpaper 34->56 58 Machine Learning detection for dropped file 34->58 60 4 other signatures 34->60 39 PxxoServicesNet.exe 34->39         started        42 WerFault.exe 34->42         started        process13 dnsIp14 52 databasepropersonombrecomercialideasearchwords.services 186.169.53.6, 49754, 49756, 49757 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 39->52
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-11-19 07:22:07 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=63epdc3krw4da7vapqlrenwrdd4rsjhes4bh52zqlaalulxoj67a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
15170d0dbe467efc4e38156ed4e03702ae19af44c100d7df7a75c6dbdb7ac587
RemcosRAT
1b9cbd60298e5be7b6c5813a3c03bd423ae73364049848c44145b9c079fd0adc
RemcosRAT
4875f3562c4af57ea7bd8f6eecfc297784d9307cd7190a6aa44a0dffc21258c9
RemcosRAT
6274c01dd6783517a68267d2c6c2af38143ed35074cfc2372d8bc385a7c5f4e9
RemcosRAT
6c882aeb918e424cefe1068a6d3fbff5526c31e185716bf3a0d5ae0295772f09
RemcosRAT
936027b0c02941505eb900045a050c0806b30a8d49c7d34fff9eff42a8168b27
RemcosRAT
a1c644a64801c61e1649517c3debc28b194b4f9d43e1a99bc28724f652c3ca5e
RemcosRAT
b5ba143b36eb77a1899c07ef016155b3b7ef73b83456cadf534245896360b902
RemcosRAT
ca62c5cf8e6f3260dbe15a469e90197612af8843d897f65c7fdde87554ebae51
RemcosRAT
ea7caecf45fc75ba512efd3cf878800893c2a43ae66fc0a9a452687ba26c1025
RemcosRAT
+ 1'126 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-f28v8vetr6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious use of SetWindowsHookEx
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:
f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
MD5 hash:
24e4c8739017f0797882d029cb6350b8
SHA1 hash:
38997d78b47408cf53de7a218c8b575d805da9d4
Link:
https://www.unpac.me/results/d925be19-d64c-4a9c-940e-1cb65cd6e2de/
SH256 hash:
c42a3a3e2c9ec369379c302e68c9c2a2e6d996c6b24a466a75569352f4edfb27
MD5 hash:
6452270e36ccf73eb47e6deeaeec9c76
SHA1 hash:
695228c80f47a07ecb36c027c47bf33ebf64f2ff
Link:
https://www.unpac.me/results/d925be19-d64c-4a9c-940e-1cb65cd6e2de/
SH256 hash:
abf0ed1b57e1cf9584fd16f0c3ae7e28d0c9a4326c28221b39afe03017b28e00
MD5 hash:
090cb156c08d77262e4d37ba29dd834d
SHA1 hash:
8faadee1f396724aa29c1fc92e17f3cb352e37d9
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/d925be19-d64c-4a9c-940e-1cb65cd6e2de/
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 26049ed4bd052c42cfe6896543c80eafe61e04d6a610074ee1642320b88e61fd

RemcosRAT

Executable exe f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe

(this sample)

  
Dropped by
MD5 d1965896010f9729b07e834cc2e99b9c
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 26049ed4bd052c42cfe6896543c80eafe61e04d6a610074ee1642320b88e61fd

Comments