MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 021f3de7a37bd3c9e308f08b37a24e8d565b38af0db869fc3b224c363edbe0df. 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: 15


Intelligence 15 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 021f3de7a37bd3c9e308f08b37a24e8d565b38af0db869fc3b224c363edbe0df
SHA3-384 hash: c0fead80f0cd810dc552c48d085fd0f8b3bcf7ff02acb84e32941f75415dbb294f1afb78c7e00e66a6915c07fc4a0fab
SHA1 hash: aa7dc0d6da09820d4f1550c388910c1bb17c103d
MD5 hash: eb29546aff8b06616b7b226986fd7827
humanhash: angel-single-robert-river
File name:xGBsfZndM6Bi.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:494'592 bytes
First seen:2023-11-07 01:19:25 UTC
Last seen:2023-11-07 01:49:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 8d5087ff5de35c3fbb9f212b47d63cad (170 x RemcosRAT)
ssdeep 6144:2/7iPrcL3ArwhBq7Kjsn9iHGXg0lwGS9MNNhdFvPxps9gsAOZZuAXec707ov:2/uPq3AfK496Gw0lwGXN3pvs/ZuN8v
TLSH T16CB49E01BAD2C072D57514300D36F776EAB8BD202826497BB3DA1D5BFE31190B62A6B7
TrID 32.2% (.EXE) Win64 Executable (generic) (10523/12/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4505/5/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon c4d48eaa8ad4d4f8 (1'000 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm)
Reporter pmelson
Tags:exe remcos RemcosRAT

Intelligence

File Origin
# of uploads :
4
# of downloads :
385
Origin country :
US US
Vendor Threat Intelligence
Detection(s):
Win.Trojan.Remcos-9841897-0
Create hunting rule

Win.Trojan.Remcos-10002580-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Setting a keyboard event handler
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Reading critical registry keys
Creating a file in the %temp% directory
Creating a window
Stealing user critical data
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control evasive exploit explorer fingerprint greyware keylogger lolbin shell32
Link:
https://www.filescan.io/uploads/654990c4993fbf888b672c1f/reports/74e9b550-8066-4102-b1ad-f238df144677/overview
Verdict:
Malicious
Labled as:
Backdoor.Remcos
Link:
https://www.hybrid-analysis.com/sample/021f3de7a37bd3c9e308f08b37a24e8d565b38af0db869fc3b224c363edbe0df
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/05edf4c8-3180-4fb0-b32a-d212e96735fd
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1338016
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to modify clipboard data
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Detected unpacking (changes PE section rights)
Found malware configuration
Installs a global keyboard hook
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/021f3de7a37bd3c9e308f08b37a24e8d565b38af0db869fc3b224c363edbe0df
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/021f3de7a37bd3c9e308f08b37a24e8d565b38af0db869fc3b224c363edbe0df/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-11-07 01:20:08 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
30 of 37 (81.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=aipt3z5dppj4tyyi6cftpisorvlfwofpbw4gt7b3ejgdmpw34dpq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection spyware stealer
Link:
https://tria.ge/reports/231107-bp4ccaba57/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Malware Config
C2 Extraction:
91.92.255.12:25050
Unpacked files
SH256 hash:
021f3de7a37bd3c9e308f08b37a24e8d565b38af0db869fc3b224c363edbe0df
MD5 hash:
eb29546aff8b06616b7b226986fd7827
SHA1 hash:
aa7dc0d6da09820d4f1550c388910c1bb17c103d
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/26001154-0f60-4656-9163-f3271de9dc78/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/021f3de7a37b/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/021f3de7a37bd3c9e308f08b37a24e8d565b38af0db869fc3b224c363edbe0df

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_rat_unpacked
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

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

Web download

RemcosRAT

Executable exe 021f3de7a37bd3c9e308f08b37a24e8d565b38af0db869fc3b224c363edbe0df

(this sample)

  
Link
https://www.virustotal.com/gui/file/021f3de7a37bd3c9e308f08b37a24e8d565b38af0db869fc3b224c363edbe0df/detection
  
Delivery method
Distributed via web download

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