MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 c40f80c23d8ff7cf3f28c2959f7017ac88cc12f7df50669c341a9a5add4bf76a. 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: 12
| SHA256 hash: | c40f80c23d8ff7cf3f28c2959f7017ac88cc12f7df50669c341a9a5add4bf76a |
|---|---|
| SHA3-384 hash: | 08c9b09c2852e20d097d09a92759d73aed98da74bbbe2be31d316b5263f8ae4d246e7f7b6f085d298904a598ac2bf65b |
| SHA1 hash: | 77229809af014acd7f1d62f0cd7a029f3d19c394 |
| MD5 hash: | 75edb7694cc730e726f76c1b7d66e7aa |
| humanhash: | alaska-berlin-steak-uncle |
| File name: | Serfinanza_Adjunto_519031054904831346157241195_56508789676848804728771_5863236621189486284042048776_6472567995516717195390_pdf.exe |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 1'187'840 bytes |
| First seen: | 2020-12-30 09:13:59 UTC |
| Last seen: | 2020-12-30 10:32:23 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger) |
| ssdeep | 6144:0yPCCCCCKCCCCCKCCCCCKCCCCCKCCCCC:bCCCCCKCCCCCKCCCCCKCCCCCKCCCCC |
| Threatray | 1'295 similar samples on MalwareBazaar |
| TLSH | 14455AD888C8506CFCBBE4B5217226C22F3EFDBE75509E0D606DAA352E12F680E45D75 |
| Reporter |  abuse_ch |
| Tags: | ESP exe geo Outlook RAT RemcosRAT |
abuse_ch
Malspam distributing RemcosRAT:HELO: NAM11-DM6-obe.outbound.protection.outlook.com
Sending IP: 40.92.19.35
From: info. Extracto <tesoreria51procolombia@outlook.es>
Subject: FACTURA EN MORA, REPORTE NEGATIVO EN DATACREDITO
Attachment: Serfinanza_Adjunto_519031054904831346157241195_56508789676848804728771_5863236621189486284042048776_ (contains "Serfinanza_Adjunto_519031054904831346157241195_56508789676848804728771_5863236621189486284042048776_6472567995516717195390_pdf.exe")
RemcosRAT C2:
databasepropersonombrecomercialideasearchwords.services
Intelligence
File Origin
# of uploads :
2
# of downloads :
379
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
43d159e4-6faf-490d-be71-796bae2b2fb5
Verdict:
Malicious activity
Analysis date:
2020-12-30 09:29:05 UTC
Tags:
rat remcos keylogger
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Detection(s):
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
Verdict:
SUSPICIOUS
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
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
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 dropped file
Multi AV Scanner detection for submitted file
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Detection:
remcos
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Status:
Malicious
First seen:
2020-12-30 09:14:07 UTC
AV detection:
14 of 29 (48.28%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 1'285 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos persistence rat
Behaviour
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:
c40f80c23d8ff7cf3f28c2959f7017ac88cc12f7df50669c341a9a5add4bf76a
MD5 hash:
75edb7694cc730e726f76c1b7d66e7aa
SHA1 hash:
77229809af014acd7f1d62f0cd7a029f3d19c394
SH256 hash:
dc03fa95fb29649950259872d0d7596e48ee4b9d885358a938ca440666974735
MD5 hash:
113043afd18a19c14f7f47294175627e
SHA1 hash:
a1bac9f0936c9923252dfa98d2dbb80f8563d4ce
SH256 hash:
584df3098edcc99d7131ea8cfcb63a1adf31ecd9b204fb298a635edd6d9d60fb
MD5 hash:
afef864a77933b290740f76955e18a61
SHA1 hash:
d0126150ee2890110e50262fe1b7884086e7c0e0
Detections:
win_remcos_g0
win_remcos_auto
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 |
|---|---|
| Author: | abuse.ch |
| Rule name: | Chrome_stealer_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Chrome in files like avemaria |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer |
|---|---|
| Author: | ditekSHen |
| Description: | detects Windows exceutables potentially bypassing UAC using eventvwr.exe |
| Rule name: | Keylog_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Contains Keylog |
| Rule name: | Parallax |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies Parallax RAT. |
| Rule name: | Remcos |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Remcos in memory |
| Rule name: | remcos_rat |
|---|---|
| Author: | jeFF0Falltrades |
| Rule name: | REMCOS_RAT_variants |
|---|
| Rule name: | win_remcos_auto |
|---|---|
| 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
Delivery method
Distributed via e-mail attachment
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