MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d7be78128d33fcdc14330c397050b6d18a1539e1e39cbb9be1e2aac53f9e6ba5. 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: 9


Intelligence 9 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d7be78128d33fcdc14330c397050b6d18a1539e1e39cbb9be1e2aac53f9e6ba5
SHA3-384 hash: a6a685017ab023f348290f926157a9e30ab696ebd54abed438a51931b3baca55f7ec65c100621665b206310c52146056
SHA1 hash: 57e44076be0f1a4ad2edf9afbce8a9c5b31d6ea9
MD5 hash: ba3c4701ed3bd5a341ec2a9799533597
humanhash: nitrogen-golf-blue-alaska
File name:RFQ_8801198277266253_pdf.scr
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:827'632 bytes
First seen:2021-01-30 13:00:10 UTC
Last seen:2021-01-30 14:59:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 794288bd68d81ac33543c831c35cd85f (1 x RemcosRAT)
ssdeep 12288:TZ3el3KnPgOu9G5Kpzs0R/d0I8ZdGlksmU793gwn:TBKYNEzzWVqlkTU793gwn
Threatray 1'490 similar samples on MalwareBazaar
TLSH 45054B31A5F9D0E5D1A67978DD0B72F8A815ED01EB208C9F3E943E487A342D1F43629E
Reporter abuse_ch
Tags:nVpn RAT RemcosRAT scr


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: SD84.btc-net.bg
Sending IP: 212.39.90.84
From: dbt616@zaetost.net
Subject: Kindly Advice on Availability of enclosed Order and Revert to Us-J & G Industrial Supplies
Attachment: RFQ_8801198277266253_pdf.img (contains "RFQ_8801198277266253_pdf.scr")

RemcosRAT C2:
xchilogs.duckdns.org:23409 (185.140.53.142)

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 :
236
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RFQ_8801198277266253_pdf.scr
Verdict:
Malicious activity
Analysis date:
2021-01-30 13:05:16 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/b57b47ac-c2e9-4675-a2f3-6b725a20a102

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/114890/
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
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Sending a TCP request to an infection source
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/594553
Signature
Connects to many ports of the same IP (likely port scanning)
Contains functionality to capture and log keystrokes
Contains functionality to detect sleep reduction / modifications
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
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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)
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: Suspicious Program Location Process Starts
Uses dynamic DNS services
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 346314 Sample: RFQ_8801198277266253_pdf.scr Startdate: 30/01/2021 Architecture: WINDOWS Score: 100 32 Malicious sample detected (through community Yara rule) 2->32 34 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->34 36 Detected Remcos RAT 2->36 38 8 other signatures 2->38 6 RFQ_8801198277266253_pdf.exe 1 4 2->6         started        11 Uqvbgzen.exe 2->11         started        13 Uqvbgzen.exe 2->13         started        process3 dnsIp4 26 cdn.discordapp.com 162.159.133.233, 443, 49746 CLOUDFLARENETUS United States 6->26 22 C:\Users\Public\Libraries\Uqvbgzen.exe, PE32 6->22 dropped 24 C:\Users\Public\Libraries\Uqvbg, ASCII 6->24 dropped 40 Contains functionality to steal Chrome passwords or cookies 6->40 42 Contains functionality to capture and log keystrokes 6->42 44 Contains functionality to inject code into remote processes 6->44 46 Contains functionality to detect sleep reduction / modifications 6->46 15 RFQ_8801198277266253_pdf.exe 2 6->15         started        48 Machine Learning detection for dropped file 11->48 50 Contains functionality to steal Firefox passwords or cookies 11->50 18 Uqvbgzen.exe 11->18         started        52 Injects a PE file into a foreign processes 13->52 20 Uqvbgzen.exe 13->20         started        file5 signatures6 process7 dnsIp8 28 xchilogs.duckdns.org 185.140.53.142, 23409, 49753 DAVID_CRAIGGG Sweden 15->28 30 192.168.2.1 unknown unknown 15->30
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d7be78128d33fcdc14330c397050b6d18a1539e1e39cbb9be1e2aac53f9e6ba5/
Threat name:
Win32.Trojan.Delf
Create hunting rule
Status:
Malicious
First seen:
2021-01-30 13:01:06 UTC
AV detection:
16 of 46 (34.78%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=267hqeungp6nyfbtbq4xaufw2gfbkopb4oolxg7b4kvmkp46nosq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
69dcf72c5f8c1751c5b144899cd43d26c7a639748d4b9a6de53bd4e3a492da3b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
9930543939f97818319ed031530d9e084994331aa4b06a304faeb321bbcc63db
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'480 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210130-hzfyn6jr8s/
Behaviour
Script User-Agent
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Remcos
Malware Config
C2 Extraction:
xchilogs.duckdns.org:23409
xxxxza.dynamic-dns.net:23409
Unpacked files
SH256 hash:
d7be78128d33fcdc14330c397050b6d18a1539e1e39cbb9be1e2aac53f9e6ba5
MD5 hash:
ba3c4701ed3bd5a341ec2a9799533597
SHA1 hash:
57e44076be0f1a4ad2edf9afbce8a9c5b31d6ea9
Link:
https://www.unpac.me/results/d1017ced-83dd-4d83-a807-6b7ae3295478/
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/d7be78128d33fcdc14330c397050b6d18a1539e1e39cbb9be1e2aac53f9e6ba5

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

img 0ac633b8903315993a8e51666ffa21b6f1ccce37cbe759d4488e18e97b117b7f

RemcosRAT

Executable exe d7be78128d33fcdc14330c397050b6d18a1539e1e39cbb9be1e2aac53f9e6ba5

(this sample)

  
Dropped by
MD5 6841f56df4bc8468490e5210e55ab453
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 0ac633b8903315993a8e51666ffa21b6f1ccce37cbe759d4488e18e97b117b7f
Cape
Cape
https://www.capesandbox.com/analysis/114890/

Comments