MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 facb3b1bbd388588efa04a3d0a5ba963af70d863494dd180b876d590f8b1bb51. 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: 10


Intelligence 10 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: facb3b1bbd388588efa04a3d0a5ba963af70d863494dd180b876d590f8b1bb51
SHA3-384 hash: f993095e44bcbf2b3a13acba4f6e766d1466417bf6600a4bc94d602a7aa00c7d7b92319dbd257118ad933cafdea7b81c
SHA1 hash: 6a1b609a53d2106a6d31ec0c1447bc0362828432
MD5 hash: cb67121eb7faf7f953b30c36ffcf83fd
humanhash: network-oklahoma-delaware-cola
File name:Original BL_pdf.scr
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:61'440 bytes
First seen:2020-12-22 10:31:50 UTC
Last seen:2020-12-22 13:12:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 71ee61248f9a81cce45e093d8e987522 (3 x RemcosRAT)
ssdeep 768:1hD0OHb7IsIMfnKWPTzqjhXwaGqxHT5sOz8vhlyVtAQudWu1w:1S671IMfn5MXTZzbYvWYQuW
Threatray 1'610 similar samples on MalwareBazaar
TLSH 21534BC7E0A48573E8F09AF15D4B8F9813677C31792846873A183F1C1D379D598A8B7A
Reporter abuse_ch
Tags:GuLoader nVpn RAT RemcosRAT scr


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: slot0.legrogroup.nl
Sending IP: 45.85.90.83
From: Maersk <info@polrdert.xyz>
Reply-To: swiftlogz@yandex.com
Subject: Re: TOP URGENT MAERSK DELIVERY
Attachment: Original BL_pdf.r28 (contains "Original BL_pdf.scr")

RemcosRAT C2:
wealth.freemyip.com:39777 (185.140.53.175)

Pointing to nVpn:

% Information related to '185.140.53.0 - 185.140.53.255'

% Abuse contact for '185.140.53.0 - 185.140.53.255' is 'abuse@privacyfirst.sh'

inetnum: 185.140.53.0 - 185.140.53.255
remarks: This prefix is assigned to The PRIVACYFIRST Project, which
remarks: operates infrastructure jointly used by various VPN service
remarks: providers. We have a very strong focus on privacy and freedom.
remarks: In case of abuse, we encourage all international law enforcement
remarks: agencies to get in touch with our abuse contact. Due to the fact
remarks: that we keep no logs of user activities and only share data when
remarks: it is legally required under our jurisdiction, it is very unlikely
remarks: for a demand of user information to be successful. Still, that
remarks: should not deter you from reaching out.
netname: PRIVACYFIRST-EU
country: EU
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: ASSIGNED PA
mnt-by: PRIVACYFIRST-MNT
created: 2016-10-17T23:24:00Z
last-modified: 2020-11-06T23:02:44Z
source: RIPE

Intelligence

File Origin
# of uploads :
2
# of downloads :
465
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Original BL_pdf.scr
Verdict:
Malicious activity
Analysis date:
2020-12-22 10:33:21 UTC
Tags:
trojan rat remcos keylogger stealer
Link:
https://app.any.run/tasks/d4c9ddf6-81d1-46cc-bfe2-785e63237b68

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/108704/
Detection(s):
SecuriteInfo.com.generic.ml.23892.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
DNS request
Sending a custom TCP request
Unauthorized injection to a recently created process by context flags manipulation
Result
Threat name:
Remcos GuLoader
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/568127
Signature
Contains functionality to hide a thread from the debugger
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Potential malicious icon found
Sigma detected: Remcos
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Tries to steal Mail credentials (via file registry)
Writes to foreign memory regions
Yara detected GuLoader
Yara detected VB6 Downloader Generic
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 333137 Sample: Original BL_pdf.scr Startdate: 22/12/2020 Architecture: WINDOWS Score: 100 38 Potential malicious icon found 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Yara detected GuLoader 2->42 44 7 other signatures 2->44 7 Original BL_pdf.exe 2->7         started        process3 signatures4 46 Writes to foreign memory regions 7->46 48 Tries to detect Any.run 7->48 50 Hides threads from debuggers 7->50 10 ieinstal.exe 2 9 7->10         started        15 ieinstal.exe 7->15         started        process5 dnsIp6 26 googlehosted.l.googleusercontent.com 172.217.16.129, 443, 49764 GOOGLEUS United States 10->26 28 wealth.freemyip.com 185.140.53.175, 39777, 49767, 49768 DAVID_CRAIGGG Sweden 10->28 30 doc-14-14-docs.googleusercontent.com 10->30 24 C:\Users\user\AppData\Roaming\...\logs.dat, ASCII 10->24 dropped 52 Tries to detect Any.run 10->52 54 Hides threads from debuggers 10->54 56 Injects a PE file into a foreign processes 10->56 17 ieinstal.exe 1 10->17         started        20 ieinstal.exe 13 10->20         started        22 ieinstal.exe 1 10->22         started        file7 signatures8 process9 signatures10 32 Tries to steal Instant Messenger accounts or passwords 17->32 34 Tries to steal Mail credentials (via file access) 17->34 36 Tries to harvest and steal browser information (history, passwords, etc) 20->36
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/facb3b1bbd388588efa04a3d0a5ba963af70d863494dd180b876d590f8b1bb51/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2020-12-22 10:32:06 UTC
AV detection:
8 of 29 (27.59%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=7lftwg55hccyr35aji6quw5jmoxxbwddjfg5dafyo3kzb6frxniq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
guloader
Create hunting rule
Similar samples:
11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44
RemcosRAT
344e6fbb3b331ae13507bca32206ceea89837dc6c02eeadeeee979d8312199b6
RemcosRAT
346c5380b5669b73b9fc43a1a17c31ea17985488e9ea947d93a1c6858ebab5e1
RemcosRAT
a2b745b8a979a49f8f7361caff58117a45e9da4149042299b96f68e3ff3998b1
RemcosRAT
c032e316eefbacca4b3ddfe7fc2ee9ac5f86daea767232d2322f7fdfe4b18993
RemcosRAT
c14895a7d0ca2633b565af7c08e77aef32397f4fdc78fd3560d2f23d89aa6d6a
RemcosRAT
e85de613abef99e65212dcd6f8077b03763fa37fa81e7921907c9e9c3859b632
RemcosRAT
e86d9b9cdf1f341e2c2f811a31d371204d181385f6c32282057b976d25f53591
RemcosRAT
f2a8ae610f1847b1344ffaa1c252543a9e4f5208b0644be9d8f5d7d6770c9ae2
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 1'600 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos rat
Link:
https://tria.ge/reports/201222-e8rtkbzbje/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Remcos
Unpacked files
SH256 hash:
facb3b1bbd388588efa04a3d0a5ba963af70d863494dd180b876d590f8b1bb51
MD5 hash:
cb67121eb7faf7f953b30c36ffcf83fd
SHA1 hash:
6a1b609a53d2106a6d31ec0c1447bc0362828432
Link:
https://www.unpac.me/results/444b2ffc-ee60-4e08-a7ee-14b57fb88686/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/facb3b1bbd388588efa04a3d0a5ba963af70d863494dd180b876d590f8b1bb51

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:suspicious_packer_section
Create hunting rule
Author:@j0sm1
Description:The packer/protector section names/keywords
Reference:http://www.hexacorn.com/blog/2012/10/14/random-stats-from-1-2m-samples-pe-section-names/
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 ab7294e85294835410acca76cfc56bb1f7d34b101f4ee45cf19ce865d0fc535e

RemcosRAT

Executable exe facb3b1bbd388588efa04a3d0a5ba963af70d863494dd180b876d590f8b1bb51

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/937674/
  
Dropped by
MD5 987efcdbf598fa35e8294b9fc3fdbdcd
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 ab7294e85294835410acca76cfc56bb1f7d34b101f4ee45cf19ce865d0fc535e
Cape
Cape
https://www.capesandbox.com/analysis/108704/

Comments