MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 76d0d86d97956a68204c7ab31b3b8f99d446f7dc030e23f80e6c18214cbe2a31. 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 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 76d0d86d97956a68204c7ab31b3b8f99d446f7dc030e23f80e6c18214cbe2a31
SHA3-384 hash: 44089dff4f6abb47d91d09045e4883a1092b74c96b5a13516c7e6d00d1d4e3ce201d58c6a87c4b20b6f541c6acc47bd0
SHA1 hash: 7b9d8b7bcccce132fb2c3d3a1049222fa06823ff
MD5 hash: 128542d00433f8b2f1555b59e1d1478f
humanhash: beer-moon-kansas-potato
File name:Ref#105062700.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:120'392 bytes
First seen:2025-03-18 12:17:34 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 1536:h++O+2EWqpSjS8syBZWi53WVnfUdqCIs72MdaSz+r:h++O+1wjS8syzWi53WVnfUdqCNdJyr
Threatray 4'172 similar samples on MalwareBazaar
TLSH T1BDC3F90A76B99F50F1F78B78689531300A3EFC999608C6D72B143D0E04B2B599BD5F3A
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
dhash icon 27f0d8d4d4d8f027 (16 x AgentTesla, 6 x NanoCore, 5 x DarkCloud)
Reporter threatcat_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
446
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Ref#105062700.exe
Verdict:
Malicious activity
Analysis date:
2025-03-18 12:20:30 UTC
Tags:
rat remcos remote purecrypter netreactor autorun-startup evasion stealer ultravnc rmm-tool exfiltration agenttesla
Link:
https://app.any.run/tasks/b386f169-7ced-449f-b326-c537b0c6346e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67d96d24194f23322a70bdca
Tags:
autorun virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Connection attempt
Sending an HTTP GET request
Creating a file in the %AppData% directory
Restart of the analyzed sample
Setting a keyboard event handler
Connecting to a non-recommended domain
Sending a custom TCP request
DNS request
Creating a file
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/76d0d86d97956a68204c7ab31b3b8f99d446f7dc030e23f80e6c18214cbe2a31
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/188d15fe-8daf-4213-9e2a-85147fd35d83
Result
Threat name:
Remcos, AgentTesla
Create hunting rule
Detection:
malicious
Classification:
rans.spre.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1641728
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
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 Remcos RAT
Drops VBS files to the startup folder
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious 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
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Drops script at startup location
Sigma detected: RegAsm connects to smtp port
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1641728 Sample: Ref#105062700.exe Startdate: 18/03/2025 Architecture: WINDOWS Score: 100 52 geoplugin.net 2->52 54 api.ipify.org 2->54 56 171.39.242.20.in-addr.arpa 2->56 78 Suricata IDS alerts for network traffic 2->78 80 Found malware configuration 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 14 other signatures 2->84 9 Ref#105062700.exe 15 5 2->9         started        14 wscript.exe 1 2->14         started        signatures3 process4 dnsIp5 62 195.177.94.43, 49711, 49724, 54831 DINET-ASRU Ukraine 9->62 42 C:\Users\user\AppData\Roaming\TypeId.exe, PE32 9->42 dropped 44 C:\Users\user\...\TypeId.exe:Zone.Identifier, ASCII 9->44 dropped 46 C:\Users\user\AppData\Roaming\...\TypeId.vbs, ASCII 9->46 dropped 108 Drops VBS files to the startup folder 9->108 110 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 9->110 112 Injects a PE file into a foreign processes 9->112 16 Ref#105062700.exe 2 18 9->16         started        114 Windows Scripting host queries suspicious COM object (likely to drop second stage) 14->114 21 TypeId.exe 14 2 14->21         started        file6 signatures7 process8 dnsIp9 48 194.59.31.92, 1818, 49717, 54828 COMBAHTONcombahtonGmbHDE Germany 16->48 50 geoplugin.net 178.237.33.50, 49720, 80 ATOM86-ASATOM86NL Netherlands 16->50 38 C:\Users\user\AppData\...\Ref_16501_0322.exe, PE32 16->38 dropped 40 C:\ProgramData\remcos\logs.dat, data 16->40 dropped 64 Detected Remcos RAT 16->64 66 Maps a DLL or memory area into another process 16->66 68 Installs a global keyboard hook 16->68 23 Ref_16501_0322.exe 14 2 16->23         started        26 Ref#105062700.exe 16->26         started        28 Ref#105062700.exe 16->28         started        30 Ref#105062700.exe 16->30         started        70 Multi AV Scanner detection for dropped file 21->70 72 Contains functionalty to change the wallpaper 21->72 74 Contains functionality to steal Chrome passwords or cookies 21->74 76 5 other signatures 21->76 32 TypeId.exe 21->32         started        file10 signatures11 process12 signatures13 94 Writes to foreign memory regions 23->94 96 Injects a PE file into a foreign processes 23->96 34 RegAsm.exe 23->34         started        98 Tries to steal Instant Messenger accounts or passwords 26->98 100 Tries to steal Mail credentials (via file / registry access) 26->100 102 Tries to harvest and steal browser information (history, passwords, etc) 28->102 104 Detected Remcos RAT 32->104 106 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 32->106 process14 dnsIp15 58 162.254.34.31, 54833, 587 VIVIDHOSTINGUS United States 34->58 60 api.ipify.org 104.26.13.205, 443, 54832 CLOUDFLARENETUS United States 34->60 86 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 34->86 88 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 34->88 90 Tries to steal Mail credentials (via file / registry access) 34->90 92 2 other signatures 34->92 signatures16
Score:
70%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/76d0d86d97956a68204c7ab31b3b8f99d446f7dc030e23f80e6c18214cbe2a31
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/76d0d86d97956a68204c7ab31b3b8f99d446f7dc030e23f80e6c18214cbe2a31/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-03-18 12:01:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=o3inq3mxsvvgqicmpkzrwo4pthken564amhch6aonqmcctf6fiyq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
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RemcosRAT
error
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fceb84f518a4cd354bb4ca4e4d061c9aa00f3baa38e0923b52b14d7c146e06da
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RemcosRAT
+ 4'162 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery rat
Link:
https://tria.ge/reports/250318-pgmlhswmw9/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Drops startup file
Remcos
Remcos family
Suspicious use of NtCreateUserProcessOtherParentProcess
Malware Config
C2 Extraction:
194.59.31.92:1818
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2bcff1ea-3bf5-4175-bbd1-86d8bfa9028a
Unpacked files
SH256 hash:
76d0d86d97956a68204c7ab31b3b8f99d446f7dc030e23f80e6c18214cbe2a31
MD5 hash:
128542d00433f8b2f1555b59e1d1478f
SHA1 hash:
7b9d8b7bcccce132fb2c3d3a1049222fa06823ff
Link:
https://www.unpac.me/results/cb840f9c-b827-4361-936d-006132b48ea5/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/76d0d86d9795/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/76d0d86d97956a68204c7ab31b3b8f99d446f7dc030e23f80e6c18214cbe2a31

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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
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:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
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
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
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.

Malspam

RemcosRAT

Executable exe 76d0d86d97956a68204c7ab31b3b8f99d446f7dc030e23f80e6c18214cbe2a31

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments