MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e. 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 28 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e
SHA3-384 hash: ec3cfcfea93667f6a6a7eb87baa622791472a6bbf00804278b19e0eb9af4eabbfe0e05d0131a5429c7f8e404a986503e
SHA1 hash: edef944f0f1afcfee136ce5915b7d72aab7c0ad3
MD5 hash: 411cdd684d90023b7de86156da1f3268
humanhash: uncle-lithium-emma-michigan
File name:K98765K40000.bat
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:907'776 bytes
First seen:2023-11-24 09:58:09 UTC
Last seen:2023-11-24 11:21:34 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:ioFVAR3Ui61meL8lc2vJJsxWs3P5JD+cdWTaEN:io6Q/9+kWs3P5Z+e
TLSH T13C1523B1266AD7A7D2BA8BB44BFAA1460336D79F35A6CDF0686D50DE0D56F1043C1303
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 00e4f8d2f2d0c010 (7 x Formbook, 5 x AgentTesla, 2 x SnakeKeylogger)
Reporter lowmal3
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
368
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
K98765K40000.bat
Verdict:
Malicious activity
Analysis date:
2023-11-24 10:00:07 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/9962657c-7989-4184-93ce-a480c89123ce

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/459990/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.59820.2513.32122.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Using the Windows Management Instrumentation requests
Stealing user critical data
Enabling autorun by creating a file
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/656073e616b73d8637209dec/reports/3656dbd6-7027-4fdd-a1e3-e0c0aa13e76d/overview
Verdict:
Malicious
Labled as:
Tedy.Generic
Link:
https://www.hybrid-analysis.com/sample/72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e
Result
Verdict:
MALICIOUS
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d32aebda-2259-46c8-b43c-d617a07a6143
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/1347345
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Contains functionality to modify clipboard data
Contains functionality to register a low level keyboard hook
Contains functionalty to change the wallpaper
Delayed program exit found
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
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
Snort IDS alert for network traffic
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)
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
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1347345 Sample: K98765K40000.bat.exe Startdate: 24/11/2023 Architecture: WINDOWS Score: 100 47 geoplugin.net 2->47 53 Snort IDS alert for network traffic 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 Antivirus detection for URL or domain 2->57 59 9 other signatures 2->59 8 K98765K40000.bat.exe 7 2->8         started        12 DQBHyGmQqNtvv.exe 5 2->12         started        signatures3 process4 file5 43 C:\Users\user\AppData\...\DQBHyGmQqNtvv.exe, PE32 8->43 dropped 45 C:\Users\user\AppData\Local\...\tmp742C.tmp, XML 8->45 dropped 61 Tries to steal Mail credentials (via file registry) 8->61 63 Uses schtasks.exe or at.exe to add and modify task schedules 8->63 65 Contains functionality to modify clipboard data 8->65 73 2 other signatures 8->73 14 K98765K40000.bat.exe 3 13 8->14         started        18 powershell.exe 21 8->18         started        20 schtasks.exe 1 8->20         started        22 K98765K40000.bat.exe 8->22         started        67 Antivirus detection for dropped file 12->67 69 Multi AV Scanner detection for dropped file 12->69 71 Contains functionalty to change the wallpaper 12->71 75 2 other signatures 12->75 24 schtasks.exe 12->24         started        26 DQBHyGmQqNtvv.exe 12->26         started        signatures6 process7 dnsIp8 49 107.175.229.139, 49710, 49711, 8087 AS-COLOCROSSINGUS United States 14->49 51 geoplugin.net 178.237.33.50, 49713, 80 ATOM86-ASATOM86NL Netherlands 14->51 83 Maps a DLL or memory area into another process 14->83 28 K98765K40000.bat.exe 1 14->28         started        31 K98765K40000.bat.exe 1 14->31         started        33 K98765K40000.bat.exe 14 14->33         started        35 K98765K40000.bat.exe 14->35         started        37 conhost.exe 18->37         started        39 conhost.exe 20->39         started        41 conhost.exe 24->41         started        signatures9 process10 signatures11 77 Tries to steal Instant Messenger accounts or passwords 28->77 79 Tries to harvest and steal browser information (history, passwords, etc) 28->79 81 Tries to steal Mail credentials (via file / registry access) 31->81
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e/
Threat name:
Win32.Trojan.AgentTesla
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Status:
Malicious
First seen:
2023-11-24 02:55:01 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ola7tfk46be5673ikompg55vs2w6xpi7peiq7pmxoekxse5gxaha._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:john-pc collection rat spyware stealer
Link:
https://tria.ge/reports/231124-lz2xdaae71/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
107.175.229.139:8087
Unpacked files
SH256 hash:
b40c51212af363bb685b5297ed6bf9f2b327f0ee31987c9eb4eb74fe79d925c6
MD5 hash:
af9c4cbc5be56020a32b6ae6c7d535d4
SHA1 hash:
ecd022f7261025c01779f742832372729e7b2bbf
Link:
https://www.unpac.me/results/4b1295dc-4084-4109-a6a0-077a14d9d0f3/
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/4b1295dc-4084-4109-a6a0-077a14d9d0f3/
SH256 hash:
79f9a890c95d5e4b8df2ef1079e9ef1cd18c9ec6410411e9bf847b3cca020eac
MD5 hash:
c9bb52b38b913795c257f983401975b4
SHA1 hash:
ceaebec091c023a883d7c685ae042856df7a67b0
Link:
https://www.unpac.me/results/4b1295dc-4084-4109-a6a0-077a14d9d0f3/
SH256 hash:
43433ed63cdb88981fcdc522de7f71a700d59490aaa3d4fcd06f4249791747b2
MD5 hash:
c45bd2b3fa3c078ab7cbbabc6014967d
SHA1 hash:
18be0277557625bddf323b3c30cc3359595e74ce
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
Link:
https://www.unpac.me/results/4b1295dc-4084-4109-a6a0-077a14d9d0f3/
Parent samples :
25ad65700d96ab435cbe3070cc5189ade55537add318b907b57fc27b6dcf7110
72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e
7d0094638be40437e64bb472a23d920cde1751b266427028175929b3507bacf5
d02b26fd892d539b931cc6949e1faad954e1febb629d5398a44ba252f7814e87
SH256 hash:
72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e
MD5 hash:
411cdd684d90023b7de86156da1f3268
SHA1 hash:
edef944f0f1afcfee136ce5915b7d72aab7c0ad3
Link:
https://www.unpac.me/results/4b1295dc-4084-4109-a6a0-077a14d9d0f3/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/72c1f9955cf0/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/72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
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_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
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:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TeslaCryptPackedMalware
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_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
Rule name:yara_template
Create hunting rule

File information

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

Malspam

RemcosRAT

Executable exe 72c1f9955cf049df7f685398f377b596adebbd1f79110fbd9771157913a6b80e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/459990/

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