MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83e2e475905c185d7114012d68a15aecf822c14a1e1bda9bf55441062a01fba1. 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: 13


Intelligence 13 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83e2e475905c185d7114012d68a15aecf822c14a1e1bda9bf55441062a01fba1
SHA3-384 hash: 9b40d22c1c6bb382a3accc816a1b04b8be1fb0c71f40cd8b03cc83bb3e973f1bf0c5cb68921c9d6582d43787ce90822a
SHA1 hash: 091ba6e7499ad3f3c44a699aca801c69203a4fc8
MD5 hash: 4810953a88b4104013572a726d93a4de
humanhash: lima-early-beryllium-nebraska
File name:P.O.No.#17AUFR010S.pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:808'448 bytes
First seen:2021-01-14 20:06:27 UTC
Last seen:2021-01-14 21:35:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:5Rmajk5K6a3aKkPDyKm6eKzNlaWT4YAlDMWtjydlcd:vjk5va3LkLyqhzNl5cRNM
Threatray 1'376 similar samples on MalwareBazaar
TLSH B3055A499B809757D7AC32FE9009266113E0D37DB6E9E768FD447063FE427A801FE1A2
Reporter abuse_ch
Tags:exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: zmta01.tradeindia.com
Sending IP: 14.140.162.138
From: info@medtechdevices.net
Subject: Re: Quote_New Order / P.O.No.#:17AUFR010S
Attachment: P.O.No.17AUFR010S.pdf.7z (contains "P.O.No.#17AUFR010S.pdf.exe")

RemcosRAT C2:
194.5.97.174:1990

Hosted on nVpn:

% Information related to '194.5.97.0 - 194.5.97.255'

% Abuse contact for '194.5.97.0 - 194.5.97.255' is 'abuse@privacyfirst.sh'

inetnum: 194.5.97.0 - 194.5.97.255
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-UK5
country: GB
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
mnt-by: PRIVACYFIRST-MNT
status: SUB-ALLOCATED PA
created: 2018-07-23T09:31:45Z
last-modified: 2020-08-26T17:48:55Z
source: RIPE

Intelligence

File Origin
# of uploads :
2
# of downloads :
154
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
P.O.No.#17AUFR010S.pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-01-14 20:58:59 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1183e522-f5b9-41a6-b628-0ced6da86cb6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/112078/
Detection(s):
SecuriteInfo.com.Artemis.4950.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Creating a file
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Running batch commands
Unauthorized injection to a recently created process
Enabling autorun by creating a file
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:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/581923
Signature
.NET source code contains potential unpacker
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
Detected unpacking (creates a PE file in dynamic memory)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Suspicious Double Extension
Sigma detected: Suspicious Svchost Process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 339999 Sample: P.O.No.#17AUFR010S.pdf.exe Startdate: 14/01/2021 Architecture: WINDOWS Score: 100 81 avatars3.githubusercontent.com 2->81 83 avatars1.githubusercontent.com 2->83 85 2 other IPs or domains 2->85 105 Malicious sample detected (through community Yara rule) 2->105 107 Multi AV Scanner detection for dropped file 2->107 109 Sigma detected: Scheduled temp file as task from temp location 2->109 111 11 other signatures 2->111 14 P.O.No.#17AUFR010S.pdf.exe 7 2->14         started        signatures3 process4 file5 75 C:\Users\user\AppData\...\yxZmnzRrdjicXR.exe, PE32 14->75 dropped 77 C:\Users\user\AppData\Local\...\tmp42A3.tmp, XML 14->77 dropped 79 C:\Users\...\P.O.No.#17AUFR010S.pdf.exe.log, ASCII 14->79 dropped 127 Contains functionality to steal Chrome passwords or cookies 14->127 129 Contains functionality to capture and log keystrokes 14->129 131 Contains functionality to inject code into remote processes 14->131 133 Contains functionality to steal Firefox passwords or cookies 14->133 18 P.O.No.#17AUFR010S.pdf.exe 3 5 14->18         started        21 schtasks.exe 1 14->21         started        signatures6 process7 file8 69 C:\Users\user\AppData\Roaming\...\system.exe, PE32 18->69 dropped 71 C:\Users\user\...\system.exe:Zone.Identifier, ASCII 18->71 dropped 23 wscript.exe 1 18->23         started        25 conhost.exe 21->25         started        process9 process10 27 cmd.exe 1 23->27         started        process11 29 system.exe 5 27->29         started        33 conhost.exe 27->33         started        file12 73 C:\Users\user\AppData\...\system.exe.log, ASCII 29->73 dropped 119 Multi AV Scanner detection for dropped file 29->119 121 Detected unpacking (creates a PE file in dynamic memory) 29->121 123 Contains functionality to steal Chrome passwords or cookies 29->123 125 2 other signatures 29->125 35 system.exe 3 1 29->35         started        39 schtasks.exe 1 29->39         started        41 system.exe 29->41         started        43 system.exe 29->43         started        signatures13 process14 dnsIp15 87 194.5.97.174, 1990, 49734, 49735 DANILENKODE Netherlands 35->87 113 Writes to foreign memory regions 35->113 115 Allocates memory in foreign processes 35->115 117 Injects a PE file into a foreign processes 35->117 45 svchost.exe 2 12 35->45         started        47 svchost.exe 35->47         started        49 svchost.exe 35->49         started        53 2 other processes 35->53 51 conhost.exe 39->51         started        signatures16 process17 process18 55 iexplore.exe 45->55         started        58 iexplore.exe 47->58         started        dnsIp19 89 192.168.2.1 unknown unknown 55->89 60 iexplore.exe 55->60         started        63 iexplore.exe 55->63         started        65 iexplore.exe 55->65         started        67 4 other processes 55->67 process20 dnsIp21 91 avatars3.githubusercontent.com 60->91 101 3 other IPs or domains 60->101 93 avatars3.githubusercontent.com 63->93 95 avatars1.githubusercontent.com 63->95 97 avatars3.githubusercontent.com 65->97 99 avatars1.githubusercontent.com 65->99 103 7 other IPs or domains 67->103
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/83e2e475905c185d7114012d68a15aecf822c14a1e1bda9bf55441062a01fba1/
Threat name:
ByteCode-MSIL.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-01-14 20:07:08 UTC
AV detection:
8 of 46 (17.39%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qproi5mqlqmf24iuaewwrik25t4cfqkkdyn5vg7vkraqmkqb7oqq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
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RemcosRAT
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db40b329c1ecea2045d4e2bc27fe712b52bbfc1d51ff1b55dcd3c8bb72258710
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e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'366 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos rat
Link:
https://tria.ge/reports/210114-hrjf2s3h2a/
Behaviour
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
194.5.97.174:1990
Unpacked files
SH256 hash:
ffc44ddb0102434912280f4bc74ff3f27fdbb6b8681d194baf8a5d0bcd73078e
MD5 hash:
495c50718f2e2ba9ab5881e0d0be97a6
SHA1 hash:
9194735112068edaba63d3d7dcf35551c1b52964
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/90899475-adc8-4910-89ca-5447f7719870/
Parent samples :
f540cc413a46d1c64542c9935d831de6e9908c1bd86e490ed66d47afb8f742f8
83e2e475905c185d7114012d68a15aecf822c14a1e1bda9bf55441062a01fba1
SH256 hash:
d0b6ceaaba1c717d28498beb7d80093655aea952ab9724a15705fc5e9e4edbc3
MD5 hash:
917f1955cd8c5cd6cf008a70d1ffe79f
SHA1 hash:
533404d805585cbcfdc28091e0ca9469078f5469
Link:
https://www.unpac.me/results/90899475-adc8-4910-89ca-5447f7719870/
SH256 hash:
296620e9308a1069ca98d27c426f25f5c1f87d9240bb371c657571034b0261b5
MD5 hash:
4cf24d41a7882216740280e3294cb853
SHA1 hash:
6bcb31d3dc0a7d71da1067a628168664202769a4
Link:
https://www.unpac.me/results/90899475-adc8-4910-89ca-5447f7719870/
SH256 hash:
83e2e475905c185d7114012d68a15aecf822c14a1e1bda9bf55441062a01fba1
MD5 hash:
4810953a88b4104013572a726d93a4de
SHA1 hash:
091ba6e7499ad3f3c44a699aca801c69203a4fc8
Link:
https://www.unpac.me/results/90899475-adc8-4910-89ca-5447f7719870/
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/83e2e475905c185d7114012d68a15aecf822c14a1e1bda9bf55441062a01fba1

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

7z e4a5262b07dc0181293c892ed0ca8f71e1050340a5b3a9e4cd2fe24a0e06f0da

RemcosRAT

Executable exe 83e2e475905c185d7114012d68a15aecf822c14a1e1bda9bf55441062a01fba1

(this sample)

  
Dropped by
MD5 1a1904355dd3f3e378576264d9a38f30
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/112078/
  
Dropped by
SHA256 e4a5262b07dc0181293c892ed0ca8f71e1050340a5b3a9e4cd2fe24a0e06f0da

Comments