MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c521850393b588bcc03715440150324b8950326dc602ab0c51acf342d57c0b7e. 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: 16


Intelligence 16 IOCs 1 YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c521850393b588bcc03715440150324b8950326dc602ab0c51acf342d57c0b7e
SHA3-384 hash: 7c9fc1362dfd5fa49582f2366b994f7da3d7e30b7302a1ccd5eab12ab4348d0bce797c804ef2e254109dec5242ba9e37
SHA1 hash: a463cc4ac61017e6dc974b8bad9fe20a0342d594
MD5 hash: 37d999adc17b19b85cb63d03fe4cd511
humanhash: kentucky-missouri-uncle-mockingbird
File name:C521850393B588BCC03715440150324B8950326DC602A.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:460'800 bytes
First seen:2022-10-24 18:51:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f9ee72c530e85b767a4ed3391690eadf (25 x RemcosRAT, 1 x Vjw0rm)
ssdeep 6144:mNzuFOjH9TX76ghtDNHffMq6+i1lSC6GocCh+41JnwNvtsAOZZYAXect4rYN:mNzuFO7V6WBN/kq9KSC6kC044sfZYaN
TLSH T111A4AF11B9D2C072C57565340D3AEB26DEBCB8341935497BB3D60D5AEE70180AB2A7B3
TrID 40.3% (.EXE) Win64 Executable (generic) (10523/12/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4505/5/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 818da080a0a08082 (5 x Urelas, 2 x RemcosRAT, 1 x DCRat)
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
157.90.145.151:2158

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
157.90.145.151:2158 https://threatfox.abuse.ch/ioc/928091/

Intelligence

File Origin
# of uploads :
1
# of downloads :
245
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
C521850393B588BCC03715440150324B8950326DC602A.exe
Verdict:
Malicious activity
Analysis date:
2022-10-24 18:53:48 UTC
Tags:
keylogger remcos trojan rat
Link:
https://app.any.run/tasks/1c5472f3-b7f3-4d44-8371-e19b7a03e0b3

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/323609/
Detection(s):
Win.Trojan.Remcos-9841897-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
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 window
Running batch commands
Setting a keyboard event handler
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/45118/overview
Behaviour
MalwareBazaar
MeasuringTime
CheckCmdLine
EvasionQueryPerformanceCounter
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cb5e6b78-f197-4db9-94ee-f0bc011de150
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1096876
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Installs a global keyboard hook
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
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 729523 Sample: C521850393B588BCC0371544015... Startdate: 24/10/2022 Architecture: WINDOWS Score: 100 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 Antivirus detection for dropped file 2->42 44 5 other signatures 2->44 8 C521850393B588BCC03715440150324B8950326DC602A.exe 4 4 2->8         started        12 rufus.exe 2->12         started        14 rufus.exe 2->14         started        process3 file4 26 C:\Users\user\AppData\Roaming\rufus.exe, PE32 8->26 dropped 28 C:\Users\user\...\rufus.exe:Zone.Identifier, ASCII 8->28 dropped 30 C:\Users\user\AppData\Local\...\install.vbs, data 8->30 dropped 54 Contains functionality to steal Chrome passwords or cookies 8->54 56 Contains functionality to steal Firefox passwords or cookies 8->56 58 Delayed program exit found 8->58 16 wscript.exe 1 8->16         started        signatures5 process6 process7 18 cmd.exe 1 16->18         started        process8 20 rufus.exe 2 15 18->20         started        24 conhost.exe 18->24         started        dnsIp9 32 157.90.145.151, 1441, 49712 REDIRISRedIRISAutonomousSystemES United States 20->32 34 geoplugin.net 178.237.33.50, 49713, 80 ATOM86-ASATOM86NL Netherlands 20->34 36 192.168.2.1 unknown unknown 20->36 46 Antivirus detection for dropped file 20->46 48 Multi AV Scanner detection for dropped file 20->48 50 Machine Learning detection for dropped file 20->50 52 4 other signatures 20->52 signatures10
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c521850393b588bcc03715440150324b8950326dc602ab0c51acf342d57c0b7e/
Threat name:
Win32.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-08-20 09:50:00 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
24 of 26 (92.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yuqyka4twwelzqbxcvcacubsjoevamtnyybkwdcrvtzufvl4bn7a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost persistence rat
Link:
https://tria.ge/reports/221024-xh22laabcp/
Behaviour
Modifies registry class
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
157.90.145.151:1441
Unpacked files
SH256 hash:
c521850393b588bcc03715440150324b8950326dc602ab0c51acf342d57c0b7e
MD5 hash:
37d999adc17b19b85cb63d03fe4cd511
SHA1 hash:
a463cc4ac61017e6dc974b8bad9fe20a0342d594
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/8726d6fd-fe82-499f-a3cd-ce4eff50cb1c/
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/c521850393b588bcc03715440150324b8950326dc602ab0c51acf342d57c0b7e

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_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
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:Detects win.remcos.

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/323609/

Comments