MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a0642205ff1e99b61822f71e22da22cc91ecbde456dd2453f81084bc22547e9d. 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: a0642205ff1e99b61822f71e22da22cc91ecbde456dd2453f81084bc22547e9d
SHA3-384 hash: 72216d5603a5f85ff776e3f5e04aacfc17cf133632507a9a194d1dd82b83311e7615646ad0a53663fcdf471a412bd0b1
SHA1 hash: 895e98f818833df38e7b8483b8eca01dee3dc49d
MD5 hash: 7e840370f5390923ace4b0fa5ff13e5c
humanhash: crazy-sierra-table-finch
File name:Extracto_Serfinanza_437016387657492665658373143700_68646875805790616282768_6990583743589364389079807_2810798809384257836110_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'988'232 bytes
First seen:2020-11-20 07:41:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:Q8TWyLflChiKGmzwaWgq+TNRNZ/syxJQOvAh+ducZW9UTE3:GyL9NTORX1Rg8h+
Threatray 1'146 similar samples on MalwareBazaar
TLSH 29956C14F840359F7ADA00F05ED796E8A2DA3119167027398C63787DEA1E54B7CEF8B2
Reporter abuse_ch
Tags:ESP exe geo Outlook RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM12-BN8-obe.outbound.protection.outlook.com
Sending IP: 40.92.21.46
From: info. Extracto <electromacltda42@outlook.es>
Subject: EXTRACTO SERFINANZA.
Attachment: Extracto_Serfinanza_437016387657492665658373143700_68646875805790616282768_6990583743589364389079807 (contains "Extracto_Serfinanza_437016387657492665658373143700_68646875805790616282768_6990583743589364389079807_2810798809384257836110_pdf.exe")

RemcosRAT C2:
databasepropersonombrecomercialideasearchwords.services:7580 (186.169.53.6)

Intelligence

File Origin
# of uploads :
1
# of downloads :
92
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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 process from a recently created file
Creating a process with a hidden window
Launching the default Windows debugger (dwwin.exe)
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/543790
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 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: 320992 Sample: 6110_pdf.exe Startdate: 20/11/2020 Architecture: WINDOWS Score: 100 59 Multi AV Scanner detection for domain / URL 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 6 other signatures 2->65 10 6110_pdf.exe 2 2->10         started        13 PxxoServicesNet.exe 2 2->13         started        15 PxxoServicesNet.exe 2 2->15         started        process3 signatures4 75 Contains functionality to steal Chrome passwords or cookies 10->75 77 Contains functionality to capture and log keystrokes 10->77 79 Contains functionality to inject code into remote processes 10->79 81 Contains functionality to steal Firefox passwords or cookies 10->81 17 6110_pdf.exe 4 5 10->17         started        20 WerFault.exe 20 9 10->20         started        83 Hides threads from debuggers 13->83 85 Injects a PE file into a foreign processes 13->85 23 PxxoServicesNet.exe 13->23         started        25 WerFault.exe 13->25         started        27 PxxoServicesNet.exe 15->27         started        29 WerFault.exe 15->29         started        process5 dnsIp6 49 C:\Users\user\AppData\...\PxxoServicesNet.exe, PE32 17->49 dropped 51 C:\...\PxxoServicesNet.exe:Zone.Identifier, ASCII 17->51 dropped 31 wscript.exe 1 17->31         started        55 192.168.2.1 unknown unknown 20->55 53 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 20->53 dropped file7 process8 process9 33 cmd.exe 1 31->33         started        process10 35 PxxoServicesNet.exe 2 33->35         started        38 conhost.exe 33->38         started        signatures11 67 Multi AV Scanner detection for dropped file 35->67 69 Machine Learning detection for dropped file 35->69 71 Contains functionality to steal Chrome passwords or cookies 35->71 73 3 other signatures 35->73 40 PxxoServicesNet.exe 35->40         started        43 PxxoServicesNet.exe 35->43         started        45 PxxoServicesNet.exe 35->45         started        47 WerFault.exe 35->47         started        process12 dnsIp13 57 databasepropersonombrecomercialideasearchwords.services 186.169.53.6, 7580 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 40->57
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a0642205ff1e99b61822f71e22da22cc91ecbde456dd2453f81084bc22547e9d/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-11-19 23:43:18 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ubscebp7d2m3mgbc64pcfwrczsi6zppek3osiu7yccclyisup2oq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
13efba52e6268bbc8089e143010d3e9be11ef8c7606a6ecd32b36e9ff60d1bde
RemcosRAT
1c517ddebb6f5893d52918c51a70e56f68b50dd65e0460a673cce3625a0f8a2b
RemcosRAT
3ad976b10711565d40a43e17baa86f178a22066c982363d711db1f7edbff3ff2
RemcosRAT
4096056536154e1fa5a10e3495cd3ddadf7c01022b7b65b0c35a67b2eac2bc6b
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
65228df6e85371a2b4b1e5340f11e36cdc94f8b39bda216c0ed143eaac36912b
RemcosRAT
6c489ebc2d7b407a9058479ee3e54b83949ef2a58ce749528cea74b4f0b5db0e
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
d7e339a5a02ec396fb568be9485047caccf6cc9ac85a8a6448410ed26a75f7e7
RemcosRAT
+ 1'136 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201120-6m5xcmbqze/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
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:
a0642205ff1e99b61822f71e22da22cc91ecbde456dd2453f81084bc22547e9d
MD5 hash:
7e840370f5390923ace4b0fa5ff13e5c
SHA1 hash:
895e98f818833df38e7b8483b8eca01dee3dc49d
Link:
https://www.unpac.me/results/b0ec2f29-6431-4ca1-8cf8-f3cf3bdcd35c/
SH256 hash:
7b49f6f297d22c97456377513f2bb97c809c7f85b081bc4c426398cc7e9d61af
MD5 hash:
14d479f6e661f5f88d1bb4422e2ad4ef
SHA1 hash:
5aa11828b9c24c48fb73d9ba5f5f6ab8ade8c252
Link:
https://www.unpac.me/results/b0ec2f29-6431-4ca1-8cf8-f3cf3bdcd35c/
SH256 hash:
f29d5e368f174237e1f2c845ecb33c35183328f312686713d0ce6e82d28d7626
MD5 hash:
84fbc06fccfb04a26ec9c854b95eb1e4
SHA1 hash:
2a87541fa2d169244765d3eddd4fc0f4f088b313
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/b0ec2f29-6431-4ca1-8cf8-f3cf3bdcd35c/
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.

b327ab274ee2083a7ab1c9b56fbe0868

RemcosRAT

Executable exe a0642205ff1e99b61822f71e22da22cc91ecbde456dd2453f81084bc22547e9d

(this sample)

  
Dropped by
MD5 b327ab274ee2083a7ab1c9b56fbe0868
  
Delivery method
Distributed via e-mail attachment

Comments