MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d4d788afc5090fd282cf5a5bac0ce8b680d26ea2bbef7cbf3a3ff50a743be296. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d4d788afc5090fd282cf5a5bac0ce8b680d26ea2bbef7cbf3a3ff50a743be296
SHA3-384 hash: 0ee1c31e5faad52eb624f2c91ad4ea39bc041af3c7b44e6c5a614550c31b907bc2a2a206f789f1487f2ec5b514e85b38
SHA1 hash: 47e983011af96e2e8d5f3fb59832338ea1824cff
MD5 hash: afd7e00736668b6a169d04195df0527c
humanhash: double-potato-arkansas-september
File name:AA.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:15'872 bytes
First seen:2025-02-24 11:30:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 384:sfFc6ec3VYDxaGyD1UjAnJ7O+cUlKYP86HW:j6V3W/m/Y+9lKiK
TLSH T18D623A2F7ACC1631D12AC73ECA2FD5944260B632358FCB5E344713462B037DBDA55A8A
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
Reporter skocherhan
Tags:exe opendir RemcosRAT


Avatar
skocherhan
http://162.230.48.189/uploads/AA.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
47
Origin country :
GB GB
Vendor Threat Intelligence
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67bc587d28ab76d43a5cde7c
Tags:
autorun remcos
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Sending an HTTP GET request to an infection source
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% directory
Launching cmd.exe command interpreter
Connection attempt to an infection source
Unauthorized injection to a recently created process
Blocking the User Account Control
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
net_reactor obfuscated obfuscated packed remcos
Link:
https://www.filescan.io/uploads/67bc58833afc3763bec3ad85/reports/6b462728-5dcc-4514-8782-e3edbfcb4429/overview
Verdict:
Malicious
Labled as:
MSILHeracles.Generic
Link:
https://www.hybrid-analysis.com/sample/d4d788afc5090fd282cf5a5bac0ce8b680d26ea2bbef7cbf3a3ff50a743be296
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cd77791a-0b70-4b51-bf21-6aa6177a8c51
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1622677
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Disables UAC (registry)
Drops large PE files
Drops VBS files to the startup folder
Encrypted powershell cmdline option found
Found malware configuration
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
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)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1622677 Sample: AA.exe Startdate: 24/02/2025 Architecture: WINDOWS Score: 100 58 Suricata IDS alerts for network traffic 2->58 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 13 other signatures 2->64 9 AA.exe 15 6 2->9         started        13 wscript.exe 2->13         started        16 svchost.exe 1 1 2->16         started        process3 dnsIp4 54 162.230.48.189, 2404, 49731, 49738 ATT-INTERNET4US United States 9->54 50 C:\Users\user\AppData\...\tmp6F38.tmp.exe, PE32 9->50 dropped 52 C:\Users\user\AppData\Local\...\AA.exe.log, CSV 9->52 dropped 18 tmp6F38.tmp.exe 6 9->18         started        94 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->94 22 Message.exe 13->22         started        56 127.0.0.1 unknown unknown 16->56 file5 signatures6 process7 file8 44 C:\Users\user\AppData\Roaming\Message.exe, PE32 18->44 dropped 46 C:\Users\user\AppData\Local\...\LIBAdmin.exe, PE32 18->46 dropped 48 C:\Users\user\AppData\Roaming\...\Message.vbs, ASCII 18->48 dropped 66 Multi AV Scanner detection for dropped file 18->66 68 Drops VBS files to the startup folder 18->68 70 Encrypted powershell cmdline option found 18->70 74 2 other signatures 18->74 24 LIBAdmin.exe 4 18->24         started        27 InstallUtil.exe 18->27         started        29 powershell.exe 23 18->29         started        72 Antivirus detection for dropped file 22->72 31 InstallUtil.exe 22->31         started        signatures9 process10 signatures11 78 Antivirus detection for dropped file 24->78 80 Multi AV Scanner detection for dropped file 24->80 82 Contains functionality to bypass UAC (CMSTPLUA) 24->82 92 2 other signatures 24->92 33 cmd.exe 1 24->33         started        84 Contains functionalty to change the wallpaper 27->84 86 Contains functionality to steal Chrome passwords or cookies 27->86 88 Contains functionality to steal Firefox passwords or cookies 27->88 90 Loading BitLocker PowerShell Module 29->90 35 WmiPrvSE.exe 29->35         started        37 conhost.exe 29->37         started        process12 process13 39 reg.exe 1 33->39         started        42 conhost.exe 33->42         started        signatures14 76 Disables UAC (registry) 39->76
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d4d788afc5090fd282cf5a5bac0ce8b680d26ea2bbef7cbf3a3ff50a743be296
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d4d788afc5090fd282cf5a5bac0ce8b680d26ea2bbef7cbf3a3ff50a743be296/
Threat name:
Win32.Trojan.Smokeloader
Create hunting rule
Status:
Malicious
First seen:
2025-02-19 15:21:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2tlyrl6fbeh5fawpljn2ydhiw2ane3vcxpxxzpz2h72qu5b34kla._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:lib defense_evasion discovery rat trojan
Link:
https://tria.ge/reports/250224-nmra8azmz3/
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Downloads MZ/PE file
Remcos
Remcos family
Suspicious use of NtCreateUserProcessOtherParentProcess
UAC bypass
Malware Config
C2 Extraction:
162.230.48.189:2404
162.230.48.189:8848
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/06ee2236-bb44-4dd7-83c8-9146eae52d1c
Unpacked files
SH256 hash:
d4d788afc5090fd282cf5a5bac0ce8b680d26ea2bbef7cbf3a3ff50a743be296
MD5 hash:
afd7e00736668b6a169d04195df0527c
SHA1 hash:
47e983011af96e2e8d5f3fb59832338ea1824cff
Link:
https://www.unpac.me/results/0ecbc0d7-6038-49df-9180-fa50f19e87a8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.97
Link:
https://yomi.yoroi.company/submissions/d4d788afc5090fd282cf5a5bac0ce8b680d26ea2bbef7cbf3a3ff50a743be296

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: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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

RemcosRAT

Executable exe d4d788afc5090fd282cf5a5bac0ce8b680d26ea2bbef7cbf3a3ff50a743be296

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3450729/
  
Delivery method
Distributed via web download

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