MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b2c6522e33aaab89652cba0f9266435563eed285db3dff387e1ee12a6d28e898. 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 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b2c6522e33aaab89652cba0f9266435563eed285db3dff387e1ee12a6d28e898
SHA3-384 hash: 9641dfac3f60d36290b6af0e5b6d2495e03ca94c5f15ed30ce649c03c2c33d54865d3f75c760eb401cdb4af0afa79ece
SHA1 hash: 5bd0bd3a6371f536d75fc384a7f8433311bedb78
MD5 hash: a1990886962a1099568261dba39d5093
humanhash: princess-california-xray-north
File name:a1990886962a1099568261dba39d5093.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'190'400 bytes
First seen:2021-05-06 07:28:29 UTC
Last seen:2021-05-06 09:57:47 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 768:80ee216r2NzOWM8T8TYABx9odFgeMk6j/AQ77N8FbLH8WWZhnYPzHDvf7cA4knsy:8KTq
Threatray 1'757 similar samples on MalwareBazaar
TLSH CE4583309FB7422175BB2D703CC774E991222FEA5A79DAE42F49A55C03372C81C66F98
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
4
# of downloads :
134
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/151415/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.17950.7319.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file
Creating a window
Deleting a recently created file
Running batch commands
DNS request
Connection attempt
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Result
Verdict:
UNKNOWN
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:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/713412
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
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
Contains functionalty to change the wallpaper
Detected Remcos RAT
Found malware configuration
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: WScript or CScript Dropper
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 405632 Sample: INTRZGw3ev.exe Startdate: 06/05/2021 Architecture: WINDOWS Score: 100 51 hjduiebcvzcalpmjdbcnwqadhsiybcnzxswedgap.ydns.eu 2->51 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 Multi AV Scanner detection for submitted file 2->59 61 6 other signatures 2->61 11 INTRZGw3ev.exe 3 2->11         started        15 win.exe 2 2->15         started        17 win.exe 2 2->17         started        signatures3 process4 file5 49 C:\Users\user\AppData\...\INTRZGw3ev.exe.log, ASCII 11->49 dropped 71 Contains functionalty to change the wallpaper 11->71 73 Contains functionality to steal Chrome passwords or cookies 11->73 75 Contains functionality to capture and log keystrokes 11->75 79 2 other signatures 11->79 19 INTRZGw3ev.exe 4 4 11->19         started        22 INTRZGw3ev.exe 11->22         started        24 BackgroundTransferHost.exe 55 11->24         started        77 Injects a PE file into a foreign processes 15->77 26 win.exe 15->26         started        28 win.exe 17->28         started        signatures6 process7 file8 45 C:\Users\user\AppData\Roaming\win.exe, PE32 19->45 dropped 47 C:\Users\user\...\win.exe:Zone.Identifier, ASCII 19->47 dropped 30 wscript.exe 1 19->30         started        process9 process10 32 cmd.exe 1 30->32         started        process11 34 win.exe 3 32->34         started        38 conhost.exe 32->38         started        file12 43 C:\Users\user\AppData\Local\...\win.exe.log, ASCII 34->43 dropped 63 Multi AV Scanner detection for dropped file 34->63 65 Contains functionalty to change the wallpaper 34->65 67 Machine Learning detection for dropped file 34->67 69 4 other signatures 34->69 40 win.exe 2 1 34->40         started        signatures13 process14 dnsIp15 53 hjduiebcvzcalpmjdbcnwqadhsiybcnzxswedgap.ydns.eu 46.243.140.66, 2024 M247GB Netherlands 40->53
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b2c6522e33aaab89652cba0f9266435563eed285db3dff387e1ee12a6d28e898/
Threat name:
Win32.Backdoor.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-05-06 07:29:18 UTC
AV detection:
14 of 46 (30.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wldfelrtvkvyszjmxihzezsdkvr65uuf3m676od6d3qsu3ji5cma._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0769c1487705fd65aeacdd813882e532d3bbd4ffa7106a2015bac448d8091bbb
RemcosRAT
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RemcosRAT
4fe8c8398a6cf30cfd7cbed590de821abdb40aa177781c43c19bdfec75308355
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522a495b289cf22898f762f18571b8839194e6232cb80fbb28dc426cbeeee323
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833b575dac3a049ede0d27e2ff801d2e8d647cf04006f0037e1a9c71d7c8ace4
RemcosRAT
ab9041fe7e0a4a439521d6eb01cc16d74c00a0427c86b067120ac453ba7329d9
RemcosRAT
c39bdd8f7c69c3140ef920e2b1d5965310058c5fa425b871f4d7751d8291d55e
RemcosRAT
cee5cdde8972799268ab97a77880793470dfc0d93c5e697bb66f83b6675f51ba
RemcosRAT
e0d4ce0316734fce0ea0d950f0ff1b4182f1364d581c549a199ac041cfe68ebb
RemcosRAT
+ 1'747 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210506-7bd1nz4wre/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
hjduiebcvzcalpmjdbcnwqadhsiybcnzxswedgap.ydns.eu:2024
Unpacked files
SH256 hash:
53ef7655c397504b79bd02a9fc8e2b67dd487046bb379f33bb75b47b998e6221
MD5 hash:
62a22f720b8395fb71b21bc5e9d7a9bb
SHA1 hash:
5a3ced16b2b584642deb7aa5c7f3cd634fb490a3
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/1a41a8d8-d6bf-4eab-80e7-69bb625484f8/
SH256 hash:
0ecb353ec4943d19c5bc0f650c586105e3b10ef16608e8f32db0e755627da127
MD5 hash:
915b0350a9520fb9233bf8e538e84b86
SHA1 hash:
4a6c9ee32acef121835da6a46533eb9fd806c42f
Link:
https://www.unpac.me/results/1a41a8d8-d6bf-4eab-80e7-69bb625484f8/
SH256 hash:
b2c6522e33aaab89652cba0f9266435563eed285db3dff387e1ee12a6d28e898
MD5 hash:
a1990886962a1099568261dba39d5093
SHA1 hash:
5bd0bd3a6371f536d75fc384a7f8433311bedb78
Link:
https://www.unpac.me/results/1a41a8d8-d6bf-4eab-80e7-69bb625484f8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Backdoor
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b2c6522e33aaab89652cba0f9266435563eed285db3dff387e1ee12a6d28e898

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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:pe_imphash
Create hunting rule
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Web download

RemcosRAT

Executable exe b2c6522e33aaab89652cba0f9266435563eed285db3dff387e1ee12a6d28e898

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/151415/
  
URLhaus
https://urlhaus.abuse.ch/url/1199254/
  
Delivery method
Distributed via web download

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