MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 669ad23d4fafbe02108540c3bfce8519a47d6c2d3198d085471de18b0a54b718. 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 2 File information Comments

SHA256 hash: 669ad23d4fafbe02108540c3bfce8519a47d6c2d3198d085471de18b0a54b718
SHA3-384 hash: adb88f9487ebde0d33f468b948b263c792edabbb713abb14fa94af49bf1ce6d458f69e52e42c04b22bebb8121bb76142
SHA1 hash: edcb31d1062bcd04a271f8168944fdd9da09050f
MD5 hash: fc022e3bc1b03faf16b644ee12c3a2d8
humanhash: freddie-xray-indigo-september
File name:75720 INV- from Outriger.exe
Download: download sample
Signature RemcosRAT
File size:329'216 bytes
First seen:2020-08-08 09:03:42 UTC
Last seen:2020-08-08 10:09:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 6144:rYX/c5McMR3YHw/IFof+MvOpg9bM3LnX5lm2FGGSRbGA6eJ:mk6cLH/MvRinX5lm2MGSFv
Threatray 495 similar samples on MalwareBazaar
TLSH 4464AE3C73A49D21C6EE6635DCDB411802AEAC0321F7EF2B994E355969863E35C05BCB
Reporter abuse_ch
Tags:exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: cloudhost-150218.us-midwest-1.nxcli.net
Sending IP: 104.207.254.25
From: Mr. Kim Sung Hae (Overseas Sales/Purchase) <sales@outriger.biz>
Reply-To: mm1045725@gmail.com
Subject: Re: 75720 INV- from Outriger General Importers Korea for acknowledgment
Attachment: 75720 INV- from Outriger.zip (contains "75720 INV- from Outriger.exe")

RemcosRAT C2:
john777.ddns.net:6640 (185.140.53.34)

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-EU3
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: 2020-07-28T20:56:03Z
source: RIPE

Intelligence


File Origin
# of uploads :
2
# of downloads :
111
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a process with a hidden window
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code references suspicious native API functions
Allocates memory in foreign processes
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
Detected Remcos RAT
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: Remcos
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 260156 Sample: 75720 INV- from Outriger.exe Startdate: 08/08/2020 Architecture: WINDOWS Score: 100 31 john777.ddns.net 2->31 35 Malicious sample detected (through community Yara rule) 2->35 37 Sigma detected: Scheduled temp file as task from temp location 2->37 39 Detected Remcos RAT 2->39 41 9 other signatures 2->41 8 75720 INV- from Outriger.exe 7 2->8         started        signatures3 process4 file5 21 C:\Users\user\AppData\...\gCgHtJzfBVQW.exe, PE32 8->21 dropped 23 C:\Users\...\gCgHtJzfBVQW.exe:Zone.Identifier, ASCII 8->23 dropped 25 C:\Users\user\AppData\Local\...\tmp8113.tmp, XML 8->25 dropped 27 C:\Users\...\75720 INV- from Outriger.exe.log, ASCII 8->27 dropped 43 Writes to foreign memory regions 8->43 45 Allocates memory in foreign processes 8->45 47 Injects a PE file into a foreign processes 8->47 12 vbc.exe 2 3 8->12         started        17 schtasks.exe 1 8->17         started        signatures6 process7 dnsIp8 33 john777.ddns.net 185.140.53.34, 49727, 49728, 49730 DAVID_CRAIGGG Sweden 12->33 29 C:\Users\user\AppData\Roaming\...\logs.dat, ASCII 12->29 dropped 49 Contains functionality to steal Chrome passwords or cookies 12->49 51 Contains functionality to capture and log keystrokes 12->51 53 Contains functionality to inject code into remote processes 12->53 55 Contains functionality to steal Firefox passwords or cookies 12->55 19 conhost.exe 17->19         started        file9 signatures10 process11
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2020-08-08 08:31:18 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
rat family:remcos
Behaviour
Suspicious use of SetWindowsHookEx
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Remcos
Malware Config
C2 Extraction:
john777.ddns.net:6640
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
Author:abuse.ch
Rule name:win_remcos_auto
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

Executable exe 669ad23d4fafbe02108540c3bfce8519a47d6c2d3198d085471de18b0a54b718

(this sample)

  
Delivery method
Distributed via e-mail attachment

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