MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c07fd0e28659f9346a6330682e6c598df98402f2b853b6e00fef908ce432ee42. 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: 11


Intelligence 11 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c07fd0e28659f9346a6330682e6c598df98402f2b853b6e00fef908ce432ee42
SHA3-384 hash: 4faf6f4df854c41d972a55b2197f63575f880a14455cb7c7ad7974ca82aa08b11f4fa1e91bb9d3c6f63263b0877e8156
SHA1 hash: 53493c31d96556211b32e2ce078d5d63f6f5329a
MD5 hash: a20b5a07ccf2b7dc101161b49f140626
humanhash: november-sink-december-massachusetts
File name:image002933894HF8474H038RHF7.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:2'678'272 bytes
First seen:2020-12-30 09:23:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 1536:jjNflO0altlfdcAZ/8jpdlqEjemcUCjNwvPFMjmg6Eb7jUtL3s9xHa+zmAGExcla:jjw
Threatray 1'297 similar samples on MalwareBazaar
TLSH 89C546D888C8106CFCBBE4B521B22BC21F3EFDBA79549E0D606DAA351E11F680E45D75
Reporter abuse_ch
Tags:exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

From: Datta Borude <datta@sydlerremedies.com>
Subject: Re: Documents
Attachment: image002933894HF8474H038RHF7.rar (contains "image002933894HF8474H038RHF7.exe")

RemcosRAT C2:
www.alldatalogs.xyz:2404 (79.134.225.47)

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 :
383
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
image002933894HF8474H038RHF7.exe
Verdict:
Malicious activity
Analysis date:
2020-12-30 09:50:30 UTC
Tags:
trojan rat remcos
Link:
https://app.any.run/tasks/d295f54f-f1c2-4ed5-9d8f-ba4ceae96b15

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/109886/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader36.31730.25082.8542.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a process with a hidden window
Sending a UDP request
DNS request
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
Sending a TCP request to an infection source
Enabling autorun by creating a file
Adding exclusions to Windows Defender
Enabling autorun
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.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/571976
Signature
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Connects to a pastebin service (likely for C&C)
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 an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Detected Remcos RAT
Drops PE files to the startup folder
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell adding suspicious path to exclusion list
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 335054 Sample: image002933894HF8474H038RHF7.exe Startdate: 30/12/2020 Architecture: WINDOWS Score: 100 63 pastebin.com 2->63 71 Malicious sample detected (through community Yara rule) 2->71 73 Multi AV Scanner detection for dropped file 2->73 75 Sigma detected: Powershell adding suspicious path to exclusion list 2->75 79 10 other signatures 2->79 8 image002933894HF8474H038RHF7.exe 24 7 2->8         started        13 image002933894HF8474H038RHF7.exe 2->13         started        15 image002933894HF8474H038RHF7.exe 2->15         started        17 3 other processes 2->17 signatures3 77 Connects to a pastebin service (likely for C&C) 63->77 process4 dnsIp5 67 pastebin.com 104.23.98.190, 443, 49733, 49757 CLOUDFLARENETUS United States 8->67 57 C:\Users\...\image002933894HF8474H038RHF7.exe, PE32 8->57 dropped 59 image002933894HF84...exe:Zone.Identifier, ASCII 8->59 dropped 61 C:\...\image002933894HF8474H038RHF7.exe.log, ASCII 8->61 dropped 81 Creates an undocumented autostart registry key 8->81 83 Creates autostart registry keys with suspicious names 8->83 85 Creates multiple autostart registry keys 8->85 91 5 other signatures 8->91 19 image002933894HF8474H038RHF7.exe 8->19         started        23 powershell.exe 24 8->23         started        25 powershell.exe 22 8->25         started        35 2 other processes 8->35 87 Adds a directory exclusion to Windows Defender 13->87 89 Injects a PE file into a foreign processes 13->89 27 powershell.exe 13->27         started        29 powershell.exe 13->29         started        31 powershell.exe 13->31         started        37 2 other processes 13->37 69 192.168.2.1 unknown unknown 15->69 33 powershell.exe 15->33         started        file6 signatures7 process8 dnsIp9 65 www.alldatalogs.xyz 79.134.225.47, 2404, 49734 FINK-TELECOM-SERVICESCH Switzerland 19->65 55 C:\Users\user\AppData\Roaming\...\logs.dat, data 19->55 dropped 39 conhost.exe 23->39         started        41 conhost.exe 25->41         started        43 conhost.exe 27->43         started        45 conhost.exe 29->45         started        47 conhost.exe 31->47         started        49 conhost.exe 35->49         started        51 conhost.exe 35->51         started        53 conhost.exe 37->53         started        file10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c07fd0e28659f9346a6330682e6c598df98402f2b853b6e00fef908ce432ee42/
Threat name:
ByteCode-MSIL.Trojan.Vimditator
Create hunting rule
Status:
Malicious
First seen:
2020-12-30 07:35:20 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yb75byuglh4ti2tdgbuc43czrx4yiaxsxbj3nyap56iizzbs5zba._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
3f1a2ec195c60a1f8789ac36368ae30a2b187858c957115bf88f40344bf0e6fa
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
86992692d34557946a1fd9a96b11789d1ba43b74eb41eeb99181c53ec8c0840c
RemcosRAT
b8bcf3a59b89b2ebc0fb7cfba5f8f726de83b08acd072b55c557cf89d16210c9
RemcosRAT
c14895a7d0ca2633b565af7c08e77aef32397f4fdc78fd3560d2f23d89aa6d6a
RemcosRAT
e1865abf21c3b8f3b3d15e6c6e477468941f9e65700ceaaa0f4cb269d967c83e
RemcosRAT
f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
RemcosRAT
+ 1'287 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos evasion persistence rat trojan
Link:
https://tria.ge/reports/201230-hm9z6814ax/
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
Legitimate hosting services abused for malware hosting/C2
Drops startup file
Windows security modification
Modifies WinLogon for persistence
Modifies Windows Defender Real-time Protection settings
Remcos
Windows security bypass
Turns off Windows Defender SpyNet reporting
Malware Config
C2 Extraction:
www.alldatalogs.xyz:2404
Unpacked files
SH256 hash:
c07fd0e28659f9346a6330682e6c598df98402f2b853b6e00fef908ce432ee42
MD5 hash:
a20b5a07ccf2b7dc101161b49f140626
SHA1 hash:
53493c31d96556211b32e2ce078d5d63f6f5329a
Link:
https://www.unpac.me/results/bf1d5e45-753d-4d1f-8281-51c753b78276/
SH256 hash:
31f1d7c9806edd16bb51806af71a7be896dd556a08553838b28e20271b0f9f1d
MD5 hash:
7a4b2540987f9ed67c0bd081ead0afd9
SHA1 hash:
40644c4bd11daf783c29d4d0bb79410717ae7cb0
Link:
https://www.unpac.me/results/bf1d5e45-753d-4d1f-8281-51c753b78276/
SH256 hash:
a09c2301b018c7fa7fa02950af970b7cb8c946936e69f62832fa9c2c3f56ee06
MD5 hash:
16662106419e28d79f31e124732ca419
SHA1 hash:
e6e840d3d06af6b72f73414672b03df36ce1c4b3
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/bf1d5e45-753d-4d1f-8281-51c753b78276/
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
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

rar 0c8afd82412a411c29b1a06140113626dda6bc48be69c8d9cbf90e3c650f569c

RemcosRAT

Executable exe c07fd0e28659f9346a6330682e6c598df98402f2b853b6e00fef908ce432ee42

(this sample)

  
Dropped by
MD5 c5986e6430cd313fe74b9e906afbc4bf
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 0c8afd82412a411c29b1a06140113626dda6bc48be69c8d9cbf90e3c650f569c
Cape
Cape
https://www.capesandbox.com/analysis/109886/

Comments