MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f3931b412c3659e006a979515e6db456e05cc778a816ab91da1481293f58e37b. 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: 17


Intelligence 17 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f3931b412c3659e006a979515e6db456e05cc778a816ab91da1481293f58e37b
SHA3-384 hash: e9108e7b904d521d3fd31f80aafeffdaf8b521fadf122f7f092f37b7ac63d3229a3e66061250e9f5f24f2e30cf4cc0c8
SHA1 hash: df0406413ff01f2d90e687d0ca5d48ff868e4647
MD5 hash: 431b76b8cbf3cbe0c1b26457f47980bc
humanhash: network-green-may-network
File name:نسخة الدفع _Banque du Caire_Pdf.bat
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:951'296 bytes
First seen:2023-07-24 05:54:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:DDexpPSzWUAPSzWUEeRNq0tnJQ6LQ9hIVNUyX5fnGzxOFNLu9qqV9r3ElqvoM:HerdUmdUDRR26MxyJGzx4pua0oM
Threatray 2'277 similar samples on MalwareBazaar
TLSH T15F15E1A1B19C9895F80324F9DCABE9251527AE85916BCB1939A3761E8CF334350F3D0F
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)
Reporter abuse_ch
Tags:bat exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
290
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
نسخة الدفع _Banque du Caire_Pdf.bat
Verdict:
Malicious activity
Analysis date:
2023-07-24 05:57:09 UTC
Tags:
rat remcos remote stealer
Link:
https://app.any.run/tasks/95cd4d6a-5494-4c20-95fc-f42aa367873b

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/430531/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.68313434.6386.3354.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Reading critical registry keys
Creating a file in the %temp% directory
Launching a process
Creating a file
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Sending a TCP request to an infection source
Stealing user critical data
Unauthorized injection to a system process
Enabling autorun by creating a file
Gathering data
Verdict:
Malicious
Labled as:
MSILHeracles.Generic
Link:
https://www.hybrid-analysis.com/sample/f3931b412c3659e006a979515e6db456e05cc778a816ab91da1481293f58e37b
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/73d8f8d9-2269-4b5e-9679-31112824461a
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.spre.phis.troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1278001
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Bypasses PowerShell execution policy
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 steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Drops PE files to the startup folder
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Sigma detected: Copy file to startup via Powershell
Sigma detected: Remcos
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)
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1278001 Sample: #U0646#U0633#U062e#U0629_#U... Startdate: 24/07/2023 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for dropped file 2->46 48 13 other signatures 2->48 7 #U0646#U0633#U062e#U0629_#U0627#U0644#U062f#U0641#U0639__Banque_du_Caire_Pdf.bat.exe 3 2->7         started        process3 file4 30 #U0646#U0633#U062e...ire_Pdf.bat.exe.log, ASCII 7->30 dropped 56 Bypasses PowerShell execution policy 7->56 58 Writes to foreign memory regions 7->58 60 Allocates memory in foreign processes 7->60 62 Injects a PE file into a foreign processes 7->62 11 RegAsm.exe 3 13 7->11         started        15 powershell.exe 14 7->15         started        signatures5 process6 dnsIp7 36 23.227.196.61, 49697, 49698, 8957 HVC-ASUS United States 11->36 38 geoplugin.net 178.237.33.50, 49699, 80 ATOM86-ASATOM86NL Netherlands 11->38 64 Contains functionality to bypass UAC (CMSTPLUA) 11->64 66 Contains functionalty to change the wallpaper 11->66 68 Contains functionality to steal Chrome passwords or cookies 11->68 74 5 other signatures 11->74 18 RegAsm.exe 1 11->18         started        21 RegAsm.exe 1 11->21         started        23 RegAsm.exe 11->23         started        27 34 other processes 11->27 32 C:\Users\user\AppData\...\anydesk.exe.exe, PE32 15->32 dropped 34 C:\Users\...\anydesk.exe.exe:Zone.Identifier, ASCII 15->34 dropped 70 Drops PE files to the startup folder 15->70 72 Powershell drops PE file 15->72 25 conhost.exe 15->25         started        file8 signatures9 process10 dnsIp11 50 Tries to steal Instant Messenger accounts or passwords 18->50 52 Tries to steal Mail credentials (via file / registry access) 18->52 40 192.168.2.1 unknown unknown 27->40 54 Tries to harvest and steal browser information (history, passwords, etc) 27->54 signatures12
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f3931b412c3659e006a979515e6db456e05cc778a816ab91da1481293f58e37b/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2023-07-23 10:10:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6ojrwqjmgzm6abvjpfiv43nuk3qfzr3yvalkxeo2csassp2y4n5q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
3da90b636e39cd1f67e3542c60d813c6ff8152f7f740b3ef4ef086ef120836df
RemcosRAT
55b379ec8cd752f104605bdbd88048c1c3b49c328b393ba496494a118ef5ae16
RemcosRAT
5e95168687b15de3724b3c8240c0b40cdb61c75b440d11a7fa72c2b247c920ae
RemcosRAT
67c7c5ec03b9334d1a132f2b0fd7ddc99515ccdb2372aa3b16463ea34d09f060
RemcosRAT
a8ae7002d16df08878c864f8cd2f8722dfcb5950372f3b12c88f4e265f2eee40
RemcosRAT
b41e4528449d3fa1730eca98df0dc9fd9e3683ccfaedf1d72ee2af2899f18db8
RemcosRAT
e5ecc9b504121707ebc8782b5a81546ee41e7141d5554271030111c51cc2501f
RemcosRAT
e970fdbbcd35127388ad909820df33fbe5d0a7bd4b52ccde011c5782edfe03fc
RemcosRAT
ea903fc267537ec6bcb77791b967bf3b217202084e2ad9583f311f100a4de459
RemcosRAT
+ 2'267 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection rat spyware stealer
Link:
https://tria.ge/reports/230724-gmfq6aab65/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Drops startup file
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
23.227.196.61:8957
Unpacked files
SH256 hash:
dc3989cd43b6ffcb90276a1701b3279de4dbfa0fbc580834ae1475ea918219f2
MD5 hash:
3e901b494893cfb35e116fc24fdeb205
SHA1 hash:
66177d130c2d33e778921bba72febb0d1e91ac2c
Link:
https://www.unpac.me/results/37a8d144-1240-4e27-8973-7cc4ca1f3fe2/
SH256 hash:
1ef1ca610a3ab76d1757a28cb8ee19ef5d9285518dfd7edc1a634a790287cca1
MD5 hash:
02d39bad58c5d8fb39725949431a956d
SHA1 hash:
1dbb863bee45b6491c5d79873f7beb164e7257a4
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/37a8d144-1240-4e27-8973-7cc4ca1f3fe2/
Parent samples :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 hash:
198a65f6a3f780f1a022f030629e8561c31cc555a113f570a566d40d1ee56a05
MD5 hash:
9b3a1b5d3ffe9fb9db6c5aaefa1ae076
SHA1 hash:
0da05e4c72430da0d061a02cd6cf50c41e6bd83a
Link:
https://www.unpac.me/results/37a8d144-1240-4e27-8973-7cc4ca1f3fe2/
SH256 hash:
f3931b412c3659e006a979515e6db456e05cc778a816ab91da1481293f58e37b
MD5 hash:
431b76b8cbf3cbe0c1b26457f47980bc
SHA1 hash:
df0406413ff01f2d90e687d0ca5d48ff868e4647
Link:
https://www.unpac.me/results/37a8d144-1240-4e27-8973-7cc4ca1f3fe2/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f3931b412c36/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f3931b412c3659e006a979515e6db456e05cc778a816ab91da1481293f58e37b

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: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: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: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.

File information

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

Malspam

RemcosRAT

Executable exe f3931b412c3659e006a979515e6db456e05cc778a816ab91da1481293f58e37b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/430531/

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