MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ece0f92110b68a8d7cd1d4a3099011d26d57670923e9e20328def2553ab69cbc. 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: ece0f92110b68a8d7cd1d4a3099011d26d57670923e9e20328def2553ab69cbc
SHA3-384 hash: 5455c99c54c57da6ee132bf7facc095652406e96c38ccf3e34f448c397a4e25be9e56237a9302fdd3b58aa564b6b18f1
SHA1 hash: 058a543f6b3b4fcc301401a8b04944ad6e7625d7
MD5 hash: a109c83108f15a49b4941c966e2630ee
humanhash: lake-magnesium-magazine-yellow
File name:ADJUNTO_SERFINANZA_1749215776698168558271_4803580771640956644_454732582763146614603879886660_0156881393079417053956926_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'210'368 bytes
First seen:2020-12-28 07:55:22 UTC
Last seen:2020-12-28 09:28:56 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:v+pMye97y0CCCCCKCCCCCKCCCCCKCCCCCKCCCCC:f9
Threatray 1'288 similar samples on MalwareBazaar
TLSH 75457102498168CBD7B2D0B0A34EC2D6B38799DCE7EA5FD4AE10E21531CD4B7EB69D41
Reporter abuse_ch
Tags:ESP exe geo Outlook RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM04-SN1-obe.outbound.protection.outlook.com
Sending IP: 40.92.11.83
From: info. Extracto <tesoreria19procolombia@outlook.es>
Subject: FACTURA EN MORA, REPORTE NEGATIVO EN DATACREDITO
Attachment: ADJUNTO_SERFINANZA_1749215776698168558271_4803580771640956644_454732582763146614603879886660_0156881 (contains "ADJUNTO_SERFINANZA_1749215776698168558271_4803580771640956644_454732582763146614603879886660_0156881393079417053956926_pdf.exe")

RemcosRAT C2:
databasepropersonombrecomercialideasearchwords.services

Intelligence

File Origin
# of uploads :
2
# of downloads :
506
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
97cbfe35-0d7f-4fd4-8f92-804bbac5a695
Verdict:
Malicious activity
Analysis date:
2020-12-28 07:57:38 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/8df1f555-e837-4c71-9343-59fcf7c013e8

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.828.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
Sending a UDP request
Deleting a recently created file
Running batch commands
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
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/570612
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
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 signatures2 2 Behavior Graph ID: 334365 Sample: 6926_pdf.exe Startdate: 28/12/2020 Architecture: WINDOWS Score: 100 58 Multi AV Scanner detection for domain / URL 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 Multi AV Scanner detection for submitted file 2->62 64 6 other signatures 2->64 10 6926_pdf.exe 3 2->10         started        14 PxxoServicesTrialNet.exe 2->14         started        16 PxxoServicesTrialNet.exe 2 2->16         started        process3 file4 44 C:\Users\user\AppData\...\6926_pdf.exe.log, ASCII 10->44 dropped 66 Contains functionality to steal Chrome passwords or cookies 10->66 68 Contains functionality to capture and log keystrokes 10->68 70 Contains functionality to inject code into remote processes 10->70 72 Contains functionality to steal Firefox passwords or cookies 10->72 18 6926_pdf.exe 4 5 10->18         started        74 Injects a PE file into a foreign processes 14->74 21 PxxoServicesTrialNet.exe 14->21         started        23 PxxoServicesTrialNet.exe 14->23         started        25 PxxoServicesTrialNet.exe 16->25         started        signatures5 process6 file7 40 C:\Users\user\...\PxxoServicesTrialNet.exe, PE32 18->40 dropped 42 PxxoServicesTrialNet.exe:Zone.Identifier, ASCII 18->42 dropped 27 wscript.exe 1 18->27         started        process8 process9 29 cmd.exe 1 27->29         started        process10 31 PxxoServicesTrialNet.exe 3 29->31         started        35 conhost.exe 29->35         started        file11 46 C:\Users\...\PxxoServicesTrialNet.exe.log, ASCII 31->46 dropped 50 Multi AV Scanner detection for dropped file 31->50 52 Machine Learning detection for dropped file 31->52 54 Contains functionality to steal Chrome passwords or cookies 31->54 56 3 other signatures 31->56 37 PxxoServicesTrialNet.exe 2 4 31->37         started        signatures12 process13 dnsIp14 48 databasepropersonombrecomercialideasearchwords.services 186.169.72.153, 7680 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 37->48
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ece0f92110b68a8d7cd1d4a3099011d26d57670923e9e20328def2553ab69cbc/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-12-28 03:36:52 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=5tqpsiiqw2fi27gr2srqtear2jwvozyjepu6eazi33zfkovwts6a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1069419faac2c4882be82f4887684652184d9a974a2bc7cf9444d80bfb0350f8
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
b8bcf3a59b89b2ebc0fb7cfba5f8f726de83b08acd072b55c557cf89d16210c9
RemcosRAT
c18f07d962d9753b946c6aa1b3af535f55c3cdc15e55fa647546a4cfd09796ca
RemcosRAT
c4474ec3fff006547f07255d6934d846e5a298a97a38aff50fcc95e92ee9dfcb
RemcosRAT
dcbeec8679aa3888a03add3d6222cf2f9d2997a3221386f57ff3066ef4457465
RemcosRAT
e1865abf21c3b8f3b3d15e6c6e477468941f9e65700ceaaa0f4cb269d967c83e
RemcosRAT
f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
RemcosRAT
+ 1'278 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-b29pw7956e/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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:
databasepropersonombrecomercialideasearchwords.services:7680
Unpacked files
SH256 hash:
ece0f92110b68a8d7cd1d4a3099011d26d57670923e9e20328def2553ab69cbc
MD5 hash:
a109c83108f15a49b4941c966e2630ee
SHA1 hash:
058a543f6b3b4fcc301401a8b04944ad6e7625d7
Link:
https://www.unpac.me/results/dd691ea9-cdfa-45c5-a27b-131988a6f603/
SH256 hash:
3c0567d4d06166a05e7c1183020e2c6b51d9a1a07fc7a209a9ed9ba58414f5e1
MD5 hash:
a1ee79bca940c33874b92ef3a26f79e5
SHA1 hash:
10448d445020518d64e0e38c327ed0048642574c
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/dd691ea9-cdfa-45c5-a27b-131988a6f603/
SH256 hash:
3b7bfc364d3b056c04cd939d16991ae6245853db95e2e6c9e5978e9ad220c955
MD5 hash:
88f588ae6d0df8f379e3c9bf40636fdb
SHA1 hash:
9e571516ec06bf8cffb15b3005c985d72e688d83
Link:
https://www.unpac.me/results/dd691ea9-cdfa-45c5-a27b-131988a6f603/
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/ece0f92110b68a8d7cd1d4a3099011d26d57670923e9e20328def2553ab69cbc

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 372b96478f2274b04ad5d47fbe4db81cce57115c8b84748226b36ab9b697a1d9

RemcosRAT

Executable exe ece0f92110b68a8d7cd1d4a3099011d26d57670923e9e20328def2553ab69cbc

(this sample)

  
Dropped by
MD5 738008121818ad64d0f8fa31b537cab9
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 372b96478f2274b04ad5d47fbe4db81cce57115c8b84748226b36ab9b697a1d9

Comments