MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ebf21217cedcf7f1809418985cb120b150b12d2ec955119c73f7c3170b5f2232. 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 4 File information Comments
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SHA256 hash: ebf21217cedcf7f1809418985cb120b150b12d2ec955119c73f7c3170b5f2232
SHA3-384 hash: 30053cd1b85c0d404d985f2c759c597bf58ccc459959f808cbe0d09b5afba6e5d2da230ea0fc4852e42acde31e79130f
SHA1 hash: 0e65d41d4144ec48dc2462d7b37bbcac04894dac
MD5 hash: a3cf1ad23b2901dc01085eee05674dd7
humanhash: arizona-uranus-whiskey-berlin
File name:RazerY.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:725'504 bytes
First seen:2022-02-17 16:53:21 UTC
Last seen:2022-02-17 18:56:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'660 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:2KSXP7/iCQd2P0zOY7DAqsftfUCfIUQbqpthN+gALWZAeGRnEA:uXP7/iCQd2KZHAfQjA1A6ZAeGRnR
Threatray 951 similar samples on MalwareBazaar
TLSH T137F4012033BE0307F97A93F903A195082BF660BE7065E75A5EC539CE6A767204D95F0B
Reporter GovCERT_CH
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
231
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/242283/
Detection(s):
SecuriteInfo.com.Suspected_malware.8630.13532.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Launching a process
Creating a file
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Running batch commands
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/620e7db0a2660f3bb9f28d0c/reports/fb8ad04c-8c56-45ef-9b38-cf6c823956ba/overview
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/48fe7caa-e0e4-4dab-ab07-78b28308bffc
Result
Threat name:
Remcos
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/941736
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
Found malware configuration
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 submitted file
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Writes to foreign memory regions
Yara detected Generic Downloader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 574210 Sample: RazerY.exe Startdate: 17/02/2022 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 48 9 other signatures 2->48 9 RazerY.exe 15 3 2->9         started        14 zoom.exe 1 2->14         started        16 zoom.exe 1 2->16         started        process3 dnsIp4 40 cdn.discordapp.com 162.159.134.233, 443, 49768 CLOUDFLARENETUS United States 9->40 38 C:\Users\user\AppData\...\RazerY.exe.log, ASCII 9->38 dropped 58 Writes to foreign memory regions 9->58 60 Allocates memory in foreign processes 9->60 62 Injects a PE file into a foreign processes 9->62 18 RegAsm.exe 4 4 9->18         started        22 conhost.exe 14->22         started        24 conhost.exe 16->24         started        file5 signatures6 process7 file8 34 C:\Users\user\AppData\Local\...\install.vbs, data 18->34 dropped 36 C:\Users\user\zoom\zoom.exe, PE32 18->36 dropped 50 Contains functionality to steal Chrome passwords or cookies 18->50 52 Contains functionality to inject code into remote processes 18->52 54 Contains functionality to steal Firefox passwords or cookies 18->54 56 Delayed program exit found 18->56 26 wscript.exe 1 18->26         started        signatures9 process10 process11 28 cmd.exe 1 26->28         started        process12 30 zoom.exe 2 28->30         started        32 conhost.exe 28->32         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ebf21217cedcf7f1809418985cb120b150b12d2ec955119c73f7c3170b5f2232/
Threat name:
ByteCode-MSIL.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-02-17 16:54:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5pzbef6o3t37daeudcmfzmjawfilcljozfkrdhdt67broc27eiza._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
09b75cdc3edcad3cc8b1729683a1132506e851c9d7a1d864fc842284822d1ba5
RemcosRAT
6a4b5aab71a352d6ae6140f99a28b0c38df78a8985b3383f1bc424ca74e046fe
RemcosRAT
7b5f70276fe64b0ec64ff186af6706b1dbbf2e2dc69e4b1546745b293121116f
RemcosRAT
7e4d8c9bfb728060738c6760ef7454c5a5351ea4166216a20679b8628c3585a2
RemcosRAT
a14fcc6851b168544feec2b3889ccff2bf11306f4d420731b471b249a16af089
RemcosRAT
b53db8cda884be522adeb2f293a41fa80fa2522b3c2eedb1ed20841c5a41d716
RemcosRAT
cc93c7587dba9e4af2265a77a349230cb8ab0a0d8c524f4cfad4886fad7a34ab
RemcosRAT
f31c3f1bc2ca3732cd557ec416ca54562daaf704f2d5b44e9b7d92d22168ac9e
RemcosRAT
+ 941 additional samples on MalwareBazaar
Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:remcos botnet:start 2 persistence rat
Link:
https://tria.ge/reports/220217-vej1hacbe2/
Behaviour
Checks processor information in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Downloads MZ/PE file
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
zoppere.nerdpol.ovh:2288
zoppere1.nerdpol.ovh:2288
Unpacked files
SH256 hash:
ebf21217cedcf7f1809418985cb120b150b12d2ec955119c73f7c3170b5f2232
MD5 hash:
a3cf1ad23b2901dc01085eee05674dd7
SHA1 hash:
0e65d41d4144ec48dc2462d7b37bbcac04894dac
Link:
https://www.unpac.me/results/4739143a-fb8d-4673-8afc-3bdfa64dfeeb/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/ebf21217cedc/report/overview.html
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/ebf21217cedcf7f1809418985cb120b150b12d2ec955119c73f7c3170b5f2232

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:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Encoded_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious encoded URL to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

File information

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

Malspam

RemcosRAT

Executable exe ebf21217cedcf7f1809418985cb120b150b12d2ec955119c73f7c3170b5f2232

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/242283/

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