MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 640edcd4eb6616347387a6d6a22d7ff623e3702aaa40831fd128c3f9e1a4a414. 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: 19


Intelligence 19 IOCs YARA 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 640edcd4eb6616347387a6d6a22d7ff623e3702aaa40831fd128c3f9e1a4a414
SHA3-384 hash: 1eec4b4b81c436dc1d06ba9bbd1025199e4bca38354153e78125367beb9537d25e4018322b15f236051d4c14b29df561
SHA1 hash: bdaf538fd32cbd4860d468726dffb3ebb422139a
MD5 hash: 91dba632832725348774e1559d5a457e
humanhash: sodium-mango-vermont-early
File name:NN5WSpobMLs2bTV.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'074'176 bytes
First seen:2023-11-01 15:53:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:eEvuo1jfG6PduK+qFv/REuCQMHg/nS+INNTJaAWHUW3p:eA3bdD+qJRRyHoS/NNTJu0Gp
Threatray 2'761 similar samples on MalwareBazaar
TLSH T121351290A2EE8B76FE3853F51129A6044BF77C2B7076E3495E9274C221B9F001B46F5B
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 02020e8e8e3e304e (5 x RemcosRAT, 1 x RedLineStealer, 1 x AveMariaRAT)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
358
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
NN5WSpobMLs2bTV.exe
Verdict:
Malicious activity
Analysis date:
2023-11-01 17:51:00 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/c0341f47-386a-429a-8300-c39f99667087

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/457641/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2504.10035.17898.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Restart of the analyzed sample
Creating a file
Setting a keyboard event handler
Using the Windows Management Instrumentation requests
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed remcos
Link:
https://www.filescan.io/uploads/6542749ba8078613bf2103f0/reports/fe4acdd1-91e3-40a9-8c46-3e0b9c423e73/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/640edcd4eb6616347387a6d6a22d7ff623e3702aaa40831fd128c3f9e1a4a414
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/fadc78b5-d6a3-4315-90a2-6c3a3d2e01e0
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1335534
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Found malware configuration
Injects a PE file into a foreign processes
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
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1335534 Sample: NN5WSpobMLs2bTV.exe Startdate: 01/11/2023 Architecture: WINDOWS Score: 100 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for URL or domain 2->53 55 10 other signatures 2->55 7 CxxeOcASU.exe 5 2->7         started        10 NN5WSpobMLs2bTV.exe 7 2->10         started        13 svchost.exe 1 1 2->13         started        process3 dnsIp4 59 Multi AV Scanner detection for dropped file 7->59 61 Contains functionality to bypass UAC (CMSTPLUA) 7->61 63 Contains functionalty to change the wallpaper 7->63 71 6 other signatures 7->71 16 schtasks.exe 1 7->16         started        18 CxxeOcASU.exe 7->18         started        41 C:\Users\user\AppData\Roaming\CxxeOcASU.exe, PE32 10->41 dropped 43 C:\Users\user\AppData\Local\...\tmpB2D0.tmp, XML 10->43 dropped 65 Uses schtasks.exe or at.exe to add and modify task schedules 10->65 67 Adds a directory exclusion to Windows Defender 10->67 69 Injects a PE file into a foreign processes 10->69 20 NN5WSpobMLs2bTV.exe 3 2 10->20         started        25 powershell.exe 23 10->25         started        27 powershell.exe 23 10->27         started        29 schtasks.exe 1 10->29         started        47 127.0.0.1 unknown unknown 13->47 file5 signatures6 process7 dnsIp8 31 conhost.exe 16->31         started        45 91.92.247.146, 3348 THEZONEBG Bulgaria 20->45 39 C:\ProgramData\remcos\logs.dat, data 20->39 dropped 57 Installs a global keyboard hook 20->57 33 conhost.exe 25->33         started        35 conhost.exe 27->35         started        37 conhost.exe 29->37         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/640edcd4eb6616347387a6d6a22d7ff623e3702aaa40831fd128c3f9e1a4a414
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/640edcd4eb6616347387a6d6a22d7ff623e3702aaa40831fd128c3f9e1a4a414/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-11-01 15:54:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
20
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mqhnzvhlmyldi44hu3lkell76yr6g4bkvjaigh6rfdb7tyneuqka._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1c6b0eb5c224c46a65fb5022852905a1293a148bd97bb81593b813e8ed814ba8
RemcosRAT
483d7f7379d43c9fb3effb226cb58a443f48105bda3a9a6310a76729d7c1b3bd
RemcosRAT
4eecb3d02825158bc36d86c8d75f37137a11576eb8fb9fec7e592648fd369f96
RemcosRAT
52e86b12783755a700ee53510574a5a3d99ecf2bfa5468438a5addef9bfe75c4
RemcosRAT
8278a87cb192844a46818c28aba0106879e1c368366fc52064d2c7943f3f197b
RemcosRAT
8a7703a7a13f95e6e58aac075b70bc322355e7f683e04824c17407a1881838cf
RemcosRAT
f4c3fd0e00326b94391240d6f460ef2501f5985e6e09d3e2e4728441c91417e2
RemcosRAT
+ 2'751 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost rat
Link:
https://tria.ge/reports/231101-tb7fysac6s/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
91.92.247.146:3348
Unpacked files
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/69076eb4-2d89-412c-8831-650859474f79/
SH256 hash:
51473a581c5c71b8a0e49c0ee71b26d5b9abdaa7fca3c531cb5d7b1e5034a1ac
MD5 hash:
d6cce992124c05f6d644020d9079f76a
SHA1 hash:
c4b0069c82f62461ab60232a92269039f139a2d3
Link:
https://www.unpac.me/results/69076eb4-2d89-412c-8831-650859474f79/
SH256 hash:
321b9837024c717dd5b2ad4217a7e2734e368bdb58918437baf42f46a34149b1
MD5 hash:
91412a60691a2512ab0becb2f7002a32
SHA1 hash:
70fe342dd601a4b6a3fb67202c9ea3b3fea31b5c
Link:
https://www.unpac.me/results/69076eb4-2d89-412c-8831-650859474f79/
SH256 hash:
b805c7308ab374afc78ab022d6078eecba7ab9c42f2108e5dc2b1ab13b270fe7
MD5 hash:
d4cf03c493567817fc5f71a3c63af9a3
SHA1 hash:
0c2c12d582ceef44870fa23dc9b4cd015e4a653c
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/69076eb4-2d89-412c-8831-650859474f79/
Parent samples :
640edcd4eb6616347387a6d6a22d7ff623e3702aaa40831fd128c3f9e1a4a414
f7a9768d3a5a59e38316dc5f4f7c1fa32454630fbf11322af88592970be4be6c
SH256 hash:
640edcd4eb6616347387a6d6a22d7ff623e3702aaa40831fd128c3f9e1a4a414
MD5 hash:
91dba632832725348774e1559d5a457e
SHA1 hash:
bdaf538fd32cbd4860d468726dffb3ebb422139a
Link:
https://www.unpac.me/results/69076eb4-2d89-412c-8831-650859474f79/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/640edcd4eb66/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/640edcd4eb6616347387a6d6a22d7ff623e3702aaa40831fd128c3f9e1a4a414

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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_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.

Malspam

RemcosRAT

Executable exe 640edcd4eb6616347387a6d6a22d7ff623e3702aaa40831fd128c3f9e1a4a414

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/457641/

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