MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4eaf10beee3ffe3dff4d6bd78c7a8f04c7a1b067c1f7cb6d414a53d56b1dee8e. 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: 18


Intelligence 18 IOCs YARA 16 File information Comments
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SHA256 hash: 4eaf10beee3ffe3dff4d6bd78c7a8f04c7a1b067c1f7cb6d414a53d56b1dee8e
SHA3-384 hash: 7fc9e65c4e8cb43ba5baf751090be0bdedcd7ff0057d7b48bc835064ecac8d7f1c0836113c872b5269a0ee354edab47c
SHA1 hash: 8780a255751a1e8e6d19e828c041cd34a7496b75
MD5 hash: c73e3ca4520ec7f2e2e435ce0033ee35
humanhash: high-kitten-carolina-nine
File name:Copia de Pago_ Banco Santander_Pdf.bat
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:843'776 bytes
First seen:2023-07-16 07:37:42 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:UWbhMZJT8mJj7SnoArI5UkrdDCQcagKN0lfCtys3l1lOoXeanfL4PMUA5:9Lmblph7cau4bHcanfL4JA
Threatray 364 similar samples on MalwareBazaar
TLSH T19A05E02CAC2AD760E76B01B630D3C50CC52FDC1DD9937D88E9C93F99A5F0A4529E0A9D
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 64e4c8d0f0e8d4d4 (56 x AgentTesla, 7 x RemcosRAT, 5 x NanoCore)
Reporter abuse_ch
Tags:bat ESP exe geo RAT RemcosRAT Santander

Intelligence

File Origin
# of uploads :
1
# of downloads :
279
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Copia de Pago_ Banco Santander_Pdf.bat
Verdict:
Malicious activity
Analysis date:
2023-07-16 08:36:17 UTC
Tags:
rat remcos remote stealer
Link:
https://app.any.run/tasks/0912b450-3cf9-45fb-90a9-630d00f7f485

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/420959/
Detection(s):
SecuriteInfo.com.IL.Trojan.MSILMamut.11682.4845.2895.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Сreating synchronization primitives
Sending an HTTP GET request
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/64b39e6b87b3dbad8aaccab6/reports/b6fa30a7-aa9d-4d72-936d-9a1097b3f8f4/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILMamut
Link:
https://www.hybrid-analysis.com/sample/4eaf10beee3ffe3dff4d6bd78c7a8f04c7a1b067c1f7cb6d414a53d56b1dee8e
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/d7e168f3-ff17-445c-a279-e2a7c8f7fccf
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
spre.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1273890
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
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 sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Sample uses process hollowing technique
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: 1273890 Sample: Copia_de_Pago__Banco_Santan... Startdate: 16/07/2023 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus detection for URL or domain 2->43 45 10 other signatures 2->45 7 Copia_de_Pago__Banco_Santander_Pdf.bat.exe 3 2->7         started        process3 file4 31 Copia_de_Pago__Ban...der_Pdf.bat.exe.log, ASCII 7->31 dropped 53 Bypasses PowerShell execution policy 7->53 55 Writes to foreign memory regions 7->55 57 Allocates memory in foreign processes 7->57 59 2 other signatures 7->59 11 RegAsm.exe 6 17 7->11         started        15 powershell.exe 10 7->15         started        17 RegAsm.exe 7->17         started        signatures5 process6 dnsIp7 33 23.227.196.61, 49693, 49694, 49704 HVC-ASUS United States 11->33 35 geoplugin.net 178.237.33.50, 49695, 49707, 80 ATOM86-ASATOM86NL Netherlands 11->35 61 Maps a DLL or memory area into another process 11->61 63 Sample uses process hollowing technique 11->63 19 RegAsm.exe 1 11->19         started        22 RegAsm.exe 1 11->22         started        24 RegAsm.exe 11->24         started        28 33 other processes 11->28 26 conhost.exe 15->26         started        signatures8 process9 dnsIp10 47 Tries to steal Instant Messenger accounts or passwords 19->47 49 Tries to steal Mail credentials (via file / registry access) 19->49 37 192.168.2.1 unknown unknown 28->37 51 Tries to harvest and steal browser information (history, passwords, etc) 28->51 signatures11
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4eaf10beee3ffe3dff4d6bd78c7a8f04c7a1b067c1f7cb6d414a53d56b1dee8e/
Threat name:
ByteCode-MSIL.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-07-14 16:49:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
22 of 38 (57.89%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=j2xrbpxoh77d372nnplyy6upatd2dmdhyh34w3kbjjj5k2y552ha._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0f611b87697a816d5b37f745fa94c89315327ba3458c190fe41efd891ccd5196
RemcosRAT
1297278ef746096841eeadfbd09a124e044a52bee1be093b4484f95af475c2b3
RemcosRAT
4b66b1c337c83ccb79e4862a7a32421fd75a565a59fee1f830d4aae55b64af9a
RemcosRAT
7e9ed4d997f5a2c2d35cb8c49f66625eb37d3711906dc39dfc6e34319ad3a2cc
RemcosRAT
9483e96760c36e3321a8ccba6968aa4c1707f0cf91fd48fbb7d8afca6006e91e
RemcosRAT
979b67124f30f347688897010f34abf0467a67516ba011c9601cf06a14be0432
RemcosRAT
d5a1b80f534871efd0a4f5d8f2dd169e8e35751ef0416dcd4af929daa82e5687
RemcosRAT
de0859dc256e79ebcf1787589be8826e08c775ceb8e40f45e55f86bb3b648725
RemcosRAT
+ 354 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/230716-jgfv3sda88/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Drops startup file
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/5bc1edc7-131b-4df0-80a7-9bf1e5321e04/
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/5bc1edc7-131b-4df0-80a7-9bf1e5321e04/
Parent samples :
038434e618075554b8262dee1ec090d8082eed1d92a94bb7de66821c316d992e
4eaf10beee3ffe3dff4d6bd78c7a8f04c7a1b067c1f7cb6d414a53d56b1dee8e
be40fed3aab989152192cb8feeb5d77a880c6bd65b525af2231e53e09f650c8a
37fe1989c187c6493c161901f4a0b5fa6659f311dcac5dc966efe91e6f42ffef
8996cd3afc7625910ffaa38e25b819d73469c4ba72cd97d6057e698e7b3009b9
2f6f8d08fcf273fa79b7a13d3b24d4f71bbc9f2fdf6965afd737ccc0d5316429
2775c8d140ff4b9a0c55e57efe291b359935ded72b0eebdc86bb409921e34713
9dcfe4a742d054e152e5e8b1f7c2c88aa5efa7896a5e072ca6af8f723d9c1509
f3931b412c3659e006a979515e6db456e05cc778a816ab91da1481293f58e37b
251b8eecc957d32f67f2433f24b995ae2b0c5753348a1ceaded0accb3d25b052
d7c063688bc39f50ab2364152612283ea08bc14c50db154999358deafe75f7d1
180f09c1346f69b5273a595bac15a705cf4a5d15b3699742baf292a5e81050ed
SH256 hash:
198a65f6a3f780f1a022f030629e8561c31cc555a113f570a566d40d1ee56a05
MD5 hash:
9b3a1b5d3ffe9fb9db6c5aaefa1ae076
SHA1 hash:
0da05e4c72430da0d061a02cd6cf50c41e6bd83a
Link:
https://www.unpac.me/results/5bc1edc7-131b-4df0-80a7-9bf1e5321e04/
SH256 hash:
4eaf10beee3ffe3dff4d6bd78c7a8f04c7a1b067c1f7cb6d414a53d56b1dee8e
MD5 hash:
c73e3ca4520ec7f2e2e435ce0033ee35
SHA1 hash:
8780a255751a1e8e6d19e828c041cd34a7496b75
Link:
https://www.unpac.me/results/5bc1edc7-131b-4df0-80a7-9bf1e5321e04/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4eaf10beee3f/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/4eaf10beee3ffe3dff4d6bd78c7a8f04c7a1b067c1f7cb6d414a53d56b1dee8e

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_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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TeslaCryptPackedMalware
Create hunting rule
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: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 4eaf10beee3ffe3dff4d6bd78c7a8f04c7a1b067c1f7cb6d414a53d56b1dee8e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/420959/

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