MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37d7dd5be37e03b4168ad2339f996d2b42a7552212e34fbc041f872838ab85e4. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 37d7dd5be37e03b4168ad2339f996d2b42a7552212e34fbc041f872838ab85e4
SHA3-384 hash: ad3936b0f1edbee8c43c573539dbeff3e4743fdaa1449e58188575d8e15a0ea9d18c438fa2baa1317fa25d427509804f
SHA1 hash: 33179837ddab50c7ed32069ce7693ecb8682d020
MD5 hash: f3761a67cc52e636f333bd937a58ed7c
humanhash: four-eleven-mockingbird-fish
File name:Delivery pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:966'144 bytes
First seen:2021-02-19 13:39:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 84671db4a18e3679141801e399e741d4 (2 x RemcosRAT)
ssdeep 12288:bqLRve0noZ5a7yI5+bIBM+XzdQu3ECoDaMycZ+3e:bU5ngpI5oXkItDocSe
Threatray 1'974 similar samples on MalwareBazaar
TLSH 33257EF3955A4AE1F33B153DF48BE73014A7F9B3390916652E943B058A6AB18F5308B3
Reporter abuse_ch
Tags:DHL exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: mail.issuedelivery.online
Sending IP: 161.97.149.176
From: Dhl Customer Support <dhl@issuedelivery.online>
Subject: Order Delivery Failed
Attachment: Attachment.iso (contains "Delivery pdf.exe")

RemcosRAT C2:
rem1.camdvr.org:2404 (79.134.225.25)

Pointing to nVpn:

% Information related to '79.134.225.0 - 79.134.225.127'

% Abuse contact for '79.134.225.0 - 79.134.225.127' is 'abuse@privacyfirst.sh'

inetnum: 79.134.225.0 - 79.134.225.127
netname: PRIVACYFIRST-EU
country: EU
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.
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
status: ASSIGNED PA
mnt-by: AF15-MNT
org: ORG-TPP6-RIPE
created: 2020-07-14T15:26:02Z
last-modified: 2020-07-14T15:31:06Z
source: RIPE

Intelligence

File Origin
# of uploads :
1
# of downloads :
167
Origin country :
n/a
Vendor Threat Intelligence
Detection:
DLAgent07
Create hunting rule
Link:
https://www.capesandbox.com/analysis/118008/
Detection(s):
Win.Dropper.Fareit-9832696-0
Create hunting rule

PUA.Win.Adware.Slugin-6803969-0
Create hunting rule

PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
DNS request
Sending a custom TCP request
Creating a file
Deleting a recently created file
Launching a process
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Setting a global event handler for the keyboard
Sending a TCP request to an infection source
Result
Verdict:
MALICIOUS
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:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/612709
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
Creates a thread in another existing process (thread injection)
Detected Remcos RAT
Found malware configuration
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
Sigma detected: Remcos
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)
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 355366 Sample: Delivery pdf.exe Startdate: 19/02/2021 Architecture: WINDOWS Score: 100 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for URL or domain 2->47 49 10 other signatures 2->49 7 Delivery pdf.exe 1 18 2->7         started        12 Rirraest.exe 2->12         started        14 Rirraest.exe 2->14         started        process3 dnsIp4 39 cdn.discordapp.com 162.159.133.233, 443, 49713 CLOUDFLARENETUS United States 7->39 35 C:\Users\Public\Libraries\Rirraest.exe, PE32 7->35 dropped 53 Writes to foreign memory regions 7->53 55 Allocates memory in foreign processes 7->55 57 Creates a thread in another existing process (thread injection) 7->57 16 ieinstal.exe 2 3 7->16         started        59 Multi AV Scanner detection for dropped file 12->59 61 Machine Learning detection for dropped file 12->61 63 Injects a PE file into a foreign processes 12->63 21 ieinstal.exe 12->21         started        23 ieinstal.exe 14->23         started        file5 signatures6 process7 dnsIp8 37 rem1.camdvr.org 79.134.225.25, 2404, 49722, 49723 FINK-TELECOM-SERVICESCH Switzerland 16->37 33 C:\Users\user\AppData\Roaming\...\logs.dat, ASCII 16->33 dropped 51 Injects a PE file into a foreign processes 16->51 25 ieinstal.exe 1 16->25         started        28 ieinstal.exe 13 16->28         started        31 ieinstal.exe 1 16->31         started        file9 signatures10 process11 dnsIp12 65 Tries to steal Instant Messenger accounts or passwords 25->65 67 Tries to steal Mail credentials (via file access) 25->67 41 192.168.2.1 unknown unknown 28->41 69 Tries to harvest and steal browser information (history, passwords, etc) 28->69 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/37d7dd5be37e03b4168ad2339f996d2b42a7552212e34fbc041f872838ab85e4/
Threat name:
Win32.Infostealer.Fareit
Create hunting rule
Status:
Malicious
First seen:
2021-02-19 13:40:10 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=g7l52w7dpyb3ifuk2izz7glnfnbkovjcclru7paed6dsqoflqxsa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44
RemcosRAT
138fa2cd5e89767fd71e4e32719550f54910e3ecc3f81fea5341321cc1b5d429
RemcosRAT
344e6fbb3b331ae13507bca32206ceea89837dc6c02eeadeeee979d8312199b6
RemcosRAT
346c5380b5669b73b9fc43a1a17c31ea17985488e9ea947d93a1c6858ebab5e1
RemcosRAT
522735989689a96d0e10e926aae941e58a695062254573c5796bb129e4c7703e
RemcosRAT
5e31a4916e479c18347d59e0a98dc12738efb5acbad3ba3e677fb24fd87e7adc
RemcosRAT
a2b745b8a979a49f8f7361caff58117a45e9da4149042299b96f68e3ff3998b1
RemcosRAT
a66b740c103035f94d2d78140ead520be0e9ee0c218ab7dc17ebb3cfa2ea4f86
RemcosRAT
c032e316eefbacca4b3ddfe7fc2ee9ac5f86daea767232d2322f7fdfe4b18993
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 1'964 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210219-a9g81zlaa6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Remcos
Malware Config
C2 Extraction:
rem1.camdvr.org:2404
rem16.hopto.org:2404
rem1666.hopto.org:2404
rem16.camdvr.org:2404
remmusic.freeddns.org:2404
sunwap1.ddns.net:2404
Unpacked files
SH256 hash:
742d9dde82f369f53ebd096e97446b429793401ab681f63e6b24b87ebc1bbc06
MD5 hash:
6a9a262f0ad021baff8e22a6dd4a53ae
SHA1 hash:
160189d345c18854b631a20011103edd2fdd136f
Link:
https://www.unpac.me/results/43d02cce-5226-45c8-8ff1-635f26ad25ff/
SH256 hash:
37d7dd5be37e03b4168ad2339f996d2b42a7552212e34fbc041f872838ab85e4
MD5 hash:
f3761a67cc52e636f333bd937a58ed7c
SHA1 hash:
33179837ddab50c7ed32069ce7693ecb8682d020
Link:
https://www.unpac.me/results/43d02cce-5226-45c8-8ff1-635f26ad25ff/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/37d7dd5be37e03b4168ad2339f996d2b42a7552212e34fbc041f872838ab85e4

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

iso 0c7fddb010816be047e6c1fb7bd8986006a85bee537c2ea50cbd2cac13390779

RemcosRAT

Executable exe 37d7dd5be37e03b4168ad2339f996d2b42a7552212e34fbc041f872838ab85e4

(this sample)

  
Dropped by
MD5 3718cbade924579bc4a90e916752adaa
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/118008/
  
Dropped by
SHA256 0c7fddb010816be047e6c1fb7bd8986006a85bee537c2ea50cbd2cac13390779

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