MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bbdbb7ca68c199a7b030b900434d79f3fe59ab20fdb4ed910609fc5f91599c57. 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: bbdbb7ca68c199a7b030b900434d79f3fe59ab20fdb4ed910609fc5f91599c57
SHA3-384 hash: 83c98f46b768676954f9795bab187f594ee94fa90b8d31fb69600291fcdc8d996a638045fe3100c1f5b590f0b10b78d0
SHA1 hash: bfb632b639b5a04bc7eef5e918bc9ff918f6fc41
MD5 hash: 424fe54dafd0ed8542f9419aece50a87
humanhash: mike-rugby-bluebird-pip
File name:Factura Serfinanza_0165422957886_0654264_53541716602158910_127037_653196953409871463_69178299779_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:2'072'680 bytes
First seen:2020-12-17 08:37:46 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'743 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:3iGJ0dpF5oRI++ZZeLaA90bSQWE6Y+sigmUKswUktRakHlgjz/7oF9Y1vsRz+/5y:VGWRdLaLYFKa9Svs1+g
Threatray 1'229 similar samples on MalwareBazaar
TLSH 42A58D14F800758F798A40F49ED796ECA2D6351A257227399C23287CEA1E18B7CDF877
Reporter abuse_ch
Tags:exe Outlook RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: NAM12-DM6-obe.outbound.protection.outlook.com
Sending IP: 40.92.22.30
From: Jhon William Pancha Romero <charlespublicidad@hotmail.com>
Subject: FACTURA EN MORA, REPORTE NEGATIVO EN DATACREDITO
Attachment: Factura Serfinanza_0165422957886_0654264_53541716602158910_127037_653196953409871463_69178299779.tgz (contains "Factura Serfinanza_0165422957886_0654264_53541716602158910_127037_653196953409871463_69178299779_pdf.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
128
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
7d1b8953-d29d-41c4-9cd7-3d5bdc8e372b
Verdict:
Malicious activity
Analysis date:
2020-12-17 08:39:01 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/059eda71-f8e7-4f4f-9e85-83ab32e6f553

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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
Launching the default Windows debugger (dwwin.exe)
Creating a process from a recently created file
Creating a process with a hidden 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
Gathering data
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/565257
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: 331713 Sample: 9779_pdf.exe Startdate: 17/12/2020 Architecture: WINDOWS Score: 100 54 Multi AV Scanner detection for domain / URL 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 Multi AV Scanner detection for submitted file 2->58 60 6 other signatures 2->60 10 9779_pdf.exe 2 2->10         started        13 PxxoServicesNet.exe 2 2->13         started        15 PxxoServicesNet.exe 2 2->15         started        process3 signatures4 70 Contains functionality to steal Chrome passwords or cookies 10->70 72 Contains functionality to capture and log keystrokes 10->72 74 Contains functionality to inject code into remote processes 10->74 76 Contains functionality to steal Firefox passwords or cookies 10->76 17 9779_pdf.exe 4 5 10->17         started        20 WerFault.exe 23 9 10->20         started        22 9779_pdf.exe 10->22         started        78 Hides threads from debuggers 13->78 80 Injects a PE file into a foreign processes 13->80 24 PxxoServicesNet.exe 13->24         started        26 PxxoServicesNet.exe 13->26         started        28 PxxoServicesNet.exe 15->28         started        process5 file6 44 C:\Users\user\AppData\...\PxxoServicesNet.exe, PE32 17->44 dropped 46 C:\...\PxxoServicesNet.exe:Zone.Identifier, ASCII 17->46 dropped 30 wscript.exe 1 17->30         started        48 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 20->48 dropped process7 process8 32 cmd.exe 1 30->32         started        process9 34 PxxoServicesNet.exe 2 32->34         started        37 conhost.exe 32->37         started        signatures10 62 Multi AV Scanner detection for dropped file 34->62 64 Machine Learning detection for dropped file 34->64 66 Contains functionality to steal Chrome passwords or cookies 34->66 68 4 other signatures 34->68 39 PxxoServicesNet.exe 2 4 34->39         started        42 WerFault.exe 34->42         started        process11 dnsIp12 50 databasepropersonombrecomercialideasearchwords.services 186.169.43.221, 7580 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 39->50 52 192.168.2.1 unknown unknown 42->52
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bbdbb7ca68c199a7b030b900434d79f3fe59ab20fdb4ed910609fc5f91599c57/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-12-17 07:47:43 UTC
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xpn3pstiygm2pmbqxeaegtlz6p7ftkza7w2o3eigbh6f7ekztrlq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1c517ddebb6f5893d52918c51a70e56f68b50dd65e0460a673cce3625a0f8a2b
RemcosRAT
3ad976b10711565d40a43e17baa86f178a22066c982363d711db1f7edbff3ff2
RemcosRAT
4096056536154e1fa5a10e3495cd3ddadf7c01022b7b65b0c35a67b2eac2bc6b
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
65228df6e85371a2b4b1e5340f11e36cdc94f8b39bda216c0ed143eaac36912b
RemcosRAT
6c489ebc2d7b407a9058479ee3e54b83949ef2a58ce749528cea74b4f0b5db0e
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
e1865abf21c3b8f3b3d15e6c6e477468941f9e65700ceaaa0f4cb269d967c83e
RemcosRAT
+ 1'219 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201217-hyh3gk6c7a/
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:
bbdbb7ca68c199a7b030b900434d79f3fe59ab20fdb4ed910609fc5f91599c57
MD5 hash:
424fe54dafd0ed8542f9419aece50a87
SHA1 hash:
bfb632b639b5a04bc7eef5e918bc9ff918f6fc41
Link:
https://www.unpac.me/results/1a1bb05f-eff4-4cd7-8d22-5378f3b95f54/
SH256 hash:
cf447db60d9719b8f883892d1a066de630d2a84e7296aa6ca12fc93bf2831270
MD5 hash:
4d00408dd42fc5d777345f90e2028f6b
SHA1 hash:
1bccefb6fcbfa60d2e89bdf9b633dd22612c0334
Link:
https://www.unpac.me/results/1a1bb05f-eff4-4cd7-8d22-5378f3b95f54/
SH256 hash:
78b7cd2deb3cb27048a235aaaf28884ea359fc5e1658e4c4e53b977ab25a49b8
MD5 hash:
1a5247fb2a80e90d51c0b67418574069
SHA1 hash:
d58f31477e75f3e741a43cca3f2df7aa8d6380e8
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/1a1bb05f-eff4-4cd7-8d22-5378f3b95f54/
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/bbdbb7ca68c199a7b030b900434d79f3fe59ab20fdb4ed910609fc5f91599c57

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 879176de0fc707041c49d1b210bc50cccab058d31d01f3e9aa292a75fd45e916

RemcosRAT

Executable exe bbdbb7ca68c199a7b030b900434d79f3fe59ab20fdb4ed910609fc5f91599c57

(this sample)

  
Dropped by
MD5 f4440b6f38b3e977aaf4f7a50ec88bcb
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 879176de0fc707041c49d1b210bc50cccab058d31d01f3e9aa292a75fd45e916

Comments