MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5527aee4e45fad012be08beb8622e0471286523fa3abb1719d1f71deedf323eb. 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: 12


Intelligence 12 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5527aee4e45fad012be08beb8622e0471286523fa3abb1719d1f71deedf323eb
SHA3-384 hash: 8fb32cbffd89b56fe76adc41aca1ad6b8e3efa1e2c73f2956f33c98bfed3e626ad37776032bc91e763c3846cf92e5276
SHA1 hash: 0ee5ea5285a95f6ae912be14a8f4c010109b0624
MD5 hash: 710e14d7edf8bd04d79e8fd424fce842
humanhash: dakota-oscar-delaware-xray
File name:Scan_ 11 Feb 2021 at 1.25_Bz5543_PDF.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:594'432 bytes
First seen:2021-02-11 07:57:34 UTC
Last seen:2021-02-11 10:08:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:HpzfwkD3Ay5KvCRN4DseufcoksBuu5XX9Okv2M+u2tJ6GJeL:pfwg5Kg2UfcoH5XNOkHGAL
Threatray 39 similar samples on MalwareBazaar
TLSH C9C4E0377B3009D1F2980A7CD1C0458C17726E76B949D7589C882587CAE4EB8DB7BBB2
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: srv01.walbix.com
Sending IP: 91.142.210.174
From: "The Hongkong and Shanghai Banking Corporation Limited (HSBC)" <customerservice@hsbc.com.hk>
Subject: Re: 回复： Bank Transfer Notification
Attachment: Scan_ 11 Feb 2021 at 1.25_Bz5543_PDF.img (contains "Scan_ 11 Feb 2021 at 1.25_Bz5543_PDF.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
111
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Scan_ 11 Feb 2021 at 1.25_Bz5543_PDF.exe
Verdict:
Malicious activity
Analysis date:
2021-02-11 07:59:03 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7e4edeed-b05d-41e6-a6e5-5ba8a18006bc

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/116689/
Detection(s):
SecuriteInfo.com.Variant.MSILKrypt.4.32077.26203.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Sending a custom TCP request
Sending a UDP request
Creating a file in the %AppData% subdirectories
Creating a window
Setting a global event handler for the keyboard
Unauthorized injection to a system 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.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/605448
Signature
Bypasses PowerShell execution policy
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
Delayed program exit found
Detected Remcos RAT
Drops PE files to the startup folder
Initial sample is a PE file and has a suspicious name
Malicious sample detected (through community Yara rule)
Powershell drops PE file
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 351760 Sample: Scan_ 11 Feb 2021 at 1.25_B... Startdate: 11/02/2021 Architecture: WINDOWS Score: 100 32 Malicious sample detected (through community Yara rule) 2->32 34 Detected Remcos RAT 2->34 36 Yara detected Remcos RAT 2->36 38 2 other signatures 2->38 7 Scan_ 11 Feb 2021 at 1.25_Bz5543_PDF.exe 2 2->7         started        9 I$s#$lT3ssl.exe 2 2->9         started        process3 process4 11 InstallUtil.exe 2 3 7->11         started        15 powershell.exe 15 7->15         started        18 powershell.exe 18 9->18         started        20 InstallUtil.exe 9->20         started        22 InstallUtil.exe 9->22         started        dnsIp5 30 103.114.107.184, 20903, 49716 VNPT-AS-VNVIETNAMPOSTSANDTELECOMMUNICATIONSGROUPVN Viet Nam 11->30 40 Contains functionality to steal Chrome passwords or cookies 11->40 42 Contains functionality to capture and log keystrokes 11->42 44 Contains functionality to inject code into remote processes 11->44 50 2 other signatures 11->50 28 C:\Users\user\AppData\...\I$s#$lT3ssl.exe, PE32 15->28 dropped 46 Drops PE files to the startup folder 15->46 48 Powershell drops PE file 15->48 24 conhost.exe 15->24         started        26 conhost.exe 18->26         started        file6 signatures7 process8
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5527aee4e45fad012be08beb8622e0471286523fa3abb1719d1f71deedf323eb/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2021-02-11 09:09:17 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=kut25zhel6wqck7arpvymixai4jimur7uov3c4m5d5y553ptepvq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1e5a328f760c35f905390fb4bcf0eefa75936c79a43e22ca7557da0e315c72ed
RemcosRAT
2f85c41ee13d69e68454d97153252e8ba9a3a0e85573427eac0600d41fa6824d
RemcosRAT
558791ef8ee4a269644ecce15552270a2e8f287603308069084793370ba9451d
RemcosRAT
6cef436fd5577158e43bd7cc85ea84cdac90044d8e9f93c254ee7ed119fa7aed
RemcosRAT
926da3334135961ff0c19ecf4358201ba4734ab01186061c423deeb081ec1cff
RemcosRAT
aa9c1ce82c3c4c29355c38931c6cc6e1cd1414051c772de3fbf0cd9439c52965
RemcosRAT
b1e15b9a8dad8e09e6a44215449f0b4f9fb269f6e00a3106a520780e43c2efd8
RemcosRAT
c062b4a790666b338f7955ea792605bf0244a8d36cb1050c602727ff6d654e36
RemcosRAT
d96b554a08cd2f503d6a1ffe5303b34f8bd6f91b369bd95e9d16642b4fece2cb
RemcosRAT
faf6463f13ccaac3980d0d71fdb44e4f56d4a519612e215e021af67140d7e855
RemcosRAT
+ 29 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos rat
Link:
https://tria.ge/reports/210211-d88rp16vba/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Drops startup file
Remcos
Unpacked files
SH256 hash:
97024f17003dd3d31dab64c4d1b8251e50d428644eb59ed3692ad79ce42019cf
MD5 hash:
8cd28be4bd9a1404c6d3600db32b3ed1
SHA1 hash:
fb90b0ca51118e771390d58b19d0a404ee14cfbc
Link:
https://www.unpac.me/results/183179ef-81de-419f-b77a-cab09e11a7d9/
SH256 hash:
f1c5fbd946dc965c1116314f176bcd33c2d84c0884075c550ef6cba14cf93607
MD5 hash:
d9bb9892e92bce267ec2874c8acc3ff6
SHA1 hash:
d9c2087b04dafeb254a8b5065bc7e6deb7de0d85
Link:
https://www.unpac.me/results/183179ef-81de-419f-b77a-cab09e11a7d9/
SH256 hash:
07b88c5f4e2bad00f800809f7b1f66e62cc4cca646f035899f0b1c564d5bca0c
MD5 hash:
61cf82f9c9f89307de11bc263bc2f54e
SHA1 hash:
7efd3a040bfdaf7a10a565cac78eac7bcbcf00c8
Detections:
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/183179ef-81de-419f-b77a-cab09e11a7d9/
SH256 hash:
5527aee4e45fad012be08beb8622e0471286523fa3abb1719d1f71deedf323eb
MD5 hash:
710e14d7edf8bd04d79e8fd424fce842
SHA1 hash:
0ee5ea5285a95f6ae912be14a8f4c010109b0624
Link:
https://www.unpac.me/results/183179ef-81de-419f-b77a-cab09e11a7d9/
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/5527aee4e45fad012be08beb8622e0471286523fa3abb1719d1f71deedf323eb

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
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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_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

RemcosRAT

img 4b712b76c5e9dc67f2331a4be07a71e4e3fbc1d3793e33a380fba73bd3b6cba5

RemcosRAT

Executable exe 5527aee4e45fad012be08beb8622e0471286523fa3abb1719d1f71deedf323eb

(this sample)

  
Dropped by
MD5 58c346ecae1a3b957a55ceae7b1e3f4f
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/116689/
  
Dropped by
SHA256 4b712b76c5e9dc67f2331a4be07a71e4e3fbc1d3793e33a380fba73bd3b6cba5

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