MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 33cca7e1dc5f3871bdbaa2bd663671a8add0f46a6c56f5ff0b039e3cc0f41af5. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 33cca7e1dc5f3871bdbaa2bd663671a8add0f46a6c56f5ff0b039e3cc0f41af5
SHA3-384 hash: de51d4d78277803800391457672ecb7fc99e8ff42e7bb987b4d3d67e620463e199af8bd851f158522d861728b9889957
SHA1 hash: 64aac8da141a21ddb1a66616764f9e15eb6d565f
MD5 hash: 3d63c204511f18510049d2fba3047d8d
humanhash: kitten-monkey-stairway-kilo
File name:SecuriteInfo.com.Generic.mg.3d63c204511f1851.31197
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'355'264 bytes
First seen:2021-01-21 10:15:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 1536:A6gDZ9eKleIlHu01nvvHmePiWqM2UM/oAYJuv24Tour479mF3LcL6tWvNZjQc+h2:s
TLSH 4355F421CDA7AA5CE23BD15207EB346DD2BA477E49130E8C11F8D2974E4B3D58E44EA3
Reporter SecuriteInfoCom
Tags:RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
148
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
MY CV.doc
Verdict:
Malicious activity
Analysis date:
2021-01-21 06:16:10 UTC
Tags:
opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/a21b60e5-e9cd-4d91-b8b6-bc2a4311601d

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/113251/
Detection(s):
SecuriteInfo.com.Generic.mg.3d63c204511f1851.31197.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a process
Sending a UDP request
Adding an access-denied ACE
Creating a file
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
Deleting a recently created file
DNS request
Launching the default Windows debugger (dwwin.exe)
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
Sending a TCP request to an infection source
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.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/587115
Signature
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
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Hides threads from debuggers
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 dnsIp2 2 Behavior Graph ID: 342578 Sample: SecuriteInfo.com.Generic.mg... Startdate: 21/01/2021 Architecture: WINDOWS Score: 100 72 wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu 2->72 74 g.msn.com 2->74 78 Malicious sample detected (through community Yara rule) 2->78 80 Multi AV Scanner detection for submitted file 2->80 82 Detected Remcos RAT 2->82 84 3 other signatures 2->84 12 SecuriteInfo.com.Generic.mg.3d63c204511f1851.exe 3 2->12         started        15 win.exe 2->15         started        17 win.exe 2->17         started        signatures3 process4 signatures5 90 Contains functionality to steal Chrome passwords or cookies 12->90 92 Contains functionality to capture and log keystrokes 12->92 94 Contains functionality to inject code into remote processes 12->94 96 Contains functionality to steal Firefox passwords or cookies 12->96 19 SecuriteInfo.com.Generic.mg.3d63c204511f1851.exe 4 4 12->19         started        22 cmd.exe 1 12->22         started        24 cmd.exe 1 12->24         started        34 2 other processes 12->34 98 Hides threads from debuggers 15->98 26 cmd.exe 15->26         started        28 cmd.exe 15->28         started        30 cmd.exe 15->30         started        32 cmd.exe 17->32         started        process6 dnsIp7 68 C:\Users\user\AppData\Roaming\win.exe, PE32 19->68 dropped 70 C:\Users\user\...\win.exe:Zone.Identifier, ASCII 19->70 dropped 37 wscript.exe 1 19->37         started        39 conhost.exe 22->39         started        41 timeout.exe 1 22->41         started        43 2 other processes 24->43 45 2 other processes 26->45 47 2 other processes 28->47 49 2 other processes 30->49 51 2 other processes 32->51 76 192.168.2.1 unknown unknown 34->76 53 2 other processes 34->53 file8 process9 process10 55 cmd.exe 1 37->55         started        process11 57 win.exe 3 55->57         started        60 conhost.exe 55->60         started        signatures12 86 Multi AV Scanner detection for dropped file 57->86 88 Machine Learning detection for dropped file 57->88 62 cmd.exe 57->62         started        process13 process14 64 conhost.exe 62->64         started        66 timeout.exe 62->66         started       
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/33cca7e1dc5f3871bdbaa2bd663671a8add0f46a6c56f5ff0b039e3cc0f41af5/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-01-21 08:19:45 UTC
AV detection:
24 of 44 (54.55%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gpgkpyo4l44hdpn2uk6wmntrvcw5b5dknrlpl7ylaopdzqhudl2q._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence ransomware rat
Link:
https://tria.ge/reports/210121-rqsl1x8lfj/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Program crash
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu:1996
Unpacked files
SH256 hash:
2f75ca2b54b845b3a1f3af0a8dad2eda479173f4d3fd2726961cd1cba0640ee8
MD5 hash:
26af42bfd0da4de5009507967cc8b191
SHA1 hash:
1b62243082b381c1120457b36aaf3a95cdac2ddd
Link:
https://www.unpac.me/results/fdb81746-8e6c-4d1a-8eeb-4a682d4ecd52/
SH256 hash:
50a7f9dd06003cd3c5eea6bb149cd50919a4dec0945348595e68dbbbc91bbd70
MD5 hash:
9987762698b2f6aaa1cdbb6a568ebccf
SHA1 hash:
007aa49109241fbc7f721bc391b60f33ba648b52
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/fdb81746-8e6c-4d1a-8eeb-4a682d4ecd52/
SH256 hash:
33cca7e1dc5f3871bdbaa2bd663671a8add0f46a6c56f5ff0b039e3cc0f41af5
MD5 hash:
3d63c204511f18510049d2fba3047d8d
SHA1 hash:
64aac8da141a21ddb1a66616764f9e15eb6d565f
Link:
https://www.unpac.me/results/fdb81746-8e6c-4d1a-8eeb-4a682d4ecd52/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/33cca7e1dc5f3871bdbaa2bd663671a8add0f46a6c56f5ff0b039e3cc0f41af5

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.

Web download

RemcosRAT

Executable exe 33cca7e1dc5f3871bdbaa2bd663671a8add0f46a6c56f5ff0b039e3cc0f41af5

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/972977/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/113251/

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