MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f777dd41f5ab3c306874f9f9548629f6767ec0ea8b942c9c60103dd4956604f2. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f777dd41f5ab3c306874f9f9548629f6767ec0ea8b942c9c60103dd4956604f2
SHA3-384 hash: 83d88ebb3b1057c9cf4d4900f79c939fad7d4059420e373e321540526f28e48b81d47ca3fe4e8e26ff3283d9fea9ebc6
SHA1 hash: 31c35b921a2d3826d5c3b87a8246d8aefe0b167f
MD5 hash: f03716d5f679fc68462ed04b73bc7acb
humanhash: foxtrot-bakerloo-mississippi-nineteen
File name:f03716d5f679fc68462ed04b73bc7acb.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:940'544 bytes
First seen:2025-03-18 06:39:12 UTC
Last seen:2025-03-18 08:21:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:Y5MOiXpKoA4Evlr9bOavrqwGDFQMjj7v27yeWvwzQi:gMpAofORbjvmwGhQMjj727ysz
Threatray 953 similar samples on MalwareBazaar
TLSH T1E3151261B74AD662DEA803F229A1E331027E9F99E101D702DFE8DEFB7940571B4187D8
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 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
423
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
f03716d5f679fc68462ed04b73bc7acb.exe
Verdict:
Malicious activity
Analysis date:
2025-03-18 06:40:32 UTC
Tags:
rat remcos remote autorun-sched stealer mpress
Link:
https://app.any.run/tasks/5d288967-abc7-4811-a337-311af2d099d8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67d9279a3962f1a6f4728d17
Tags:
virus msil sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
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
Connection attempt
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/f777dd41f5ab3c306874f9f9548629f6767ec0ea8b942c9c60103dd4956604f2
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/f716c7ec-9713-4247-a354-f8aa91f25585
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/1641286
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
Attempt to bypass Chrome Application-Bound Encryption
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
Detected Remcos RAT
Found evasive API chain checking for user administrative privileges
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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: Potential Data Stealing Via Chromium Headless Debugging
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts 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
Writes to foreign memory regions
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: 1641286 Sample: Ua5S7zIarq.exe Startdate: 18/03/2025 Architecture: WINDOWS Score: 100 69 geoplugin.net 2->69 83 Suricata IDS alerts for network traffic 2->83 85 Found malware configuration 2->85 87 Malicious sample detected (through community Yara rule) 2->87 89 13 other signatures 2->89 9 Ua5S7zIarq.exe 7 2->9         started        13 snSelvjiHXQAF.exe 2->13         started        15 svchost.exe 1 1 2->15         started        signatures3 process4 dnsIp5 61 C:\Users\user\AppData\...\snSelvjiHXQAF.exe, PE32 9->61 dropped 63 C:\...\snSelvjiHXQAF.exe:Zone.Identifier, ASCII 9->63 dropped 65 C:\Users\user\AppData\Local\...\tmpB1B7.tmp, XML 9->65 dropped 67 C:\Users\user\AppData\...\Ua5S7zIarq.exe.log, ASCII 9->67 dropped 109 Attempt to bypass Chrome Application-Bound Encryption 9->109 111 Uses schtasks.exe or at.exe to add and modify task schedules 9->111 113 Adds a directory exclusion to Windows Defender 9->113 121 2 other signatures 9->121 18 Ua5S7zIarq.exe 9 26 9->18         started        22 powershell.exe 23 9->22         started        24 powershell.exe 23 9->24         started        26 schtasks.exe 1 9->26         started        115 Antivirus detection for dropped file 13->115 117 Multi AV Scanner detection for dropped file 13->117 119 Contains functionality to bypass UAC (CMSTPLUA) 13->119 123 4 other signatures 13->123 28 snSelvjiHXQAF.exe 13->28         started        30 schtasks.exe 13->30         started        32 snSelvjiHXQAF.exe 13->32         started        34 snSelvjiHXQAF.exe 13->34         started        81 127.0.0.1 unknown unknown 15->81 file6 signatures7 process8 dnsIp9 71 196.251.70.94, 43213, 49719, 49720 Web4AfricaZA Seychelles 18->71 73 geoplugin.net 178.237.33.50, 49722, 80 ATOM86-ASATOM86NL Netherlands 18->73 91 Detected Remcos RAT 18->91 93 Tries to harvest and steal browser information (history, passwords, etc) 18->93 95 Writes to foreign memory regions 18->95 97 Maps a DLL or memory area into another process 18->97 36 recover.exe 18->36         started        39 recover.exe 18->39         started        41 recover.exe 18->41         started        53 2 other processes 18->53 99 Loading BitLocker PowerShell Module 22->99 43 WmiPrvSE.exe 22->43         started        45 conhost.exe 22->45         started        47 conhost.exe 24->47         started        49 conhost.exe 26->49         started        51 conhost.exe 30->51         started        signatures10 process11 dnsIp12 101 Tries to steal Mail credentials (via file registry) 36->101 103 Tries to harvest and steal browser information (history, passwords, etc) 36->103 105 Tries to steal Instant Messenger accounts or passwords 39->105 107 Tries to steal Mail credentials (via file / registry access) 39->107 75 192.168.2.4, 138, 43213, 443 unknown unknown 53->75 56 chrome.exe 53->56         started        59 msedge.exe 53->59         started        signatures13 process14 dnsIp15 77 googlehosted.l.googleusercontent.com 142.250.185.193, 443, 49738 GOOGLEUS United States 56->77 79 clients2.googleusercontent.com 56->79
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f777dd41f5ab3c306874f9f9548629f6767ec0ea8b942c9c60103dd4956604f2
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f777dd41f5ab3c306874f9f9548629f6767ec0ea8b942c9c60103dd4956604f2/
Threat name:
ByteCode-MSIL.Trojan.Masslogger
Create hunting rule
Status:
Malicious
First seen:
2025-03-13 20:25:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=65352qpvvm6da2du7h4vjbrj6z3h5qhkrokczhdaca65jflgatza._file
Verdict:
malicious
Label(s):
admintool_bulletpassview
Create hunting rule
admintool_mailpassview
Create hunting rule
remcos
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
2bc8d61404e72f2eb612343614a9972fc8adbe09c1d00a5cf91a9e7e41036291
RemcosRAT
2e4a8adeb10758473cd1d42e9869ee03840016814c6cfc0465303b19afaca46f
RemcosRAT
37749c2d24301276a9b1a9d1b39ab49c3037dd9ed6f1f90e895658a5d0ada16f
RemcosRAT
8e7e6ed8638ee1a261b2ce3badcaae3d9a00573d2c3612883e10787c58eec5e3
RemcosRAT
a80147c2853fdb7b2c7b2b8d6e0ed9cce5c3f17ccfbeacba71fa26d4956978f5
RemcosRAT
cc985a14a3106fa6cd7d46894e6e986a6e47c8f3a11f50c080cf85dc050d00c0
RemcosRAT
error
RemcosRAT
f15b81d00d3d99f387f0a55d7ef0d59326b35eeb9987c15574db35fa81f26e93
RemcosRAT
+ 943 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:chez collection credential_access discovery execution rat spyware stealer
Link:
https://tria.ge/reports/250318-he8yeazj14/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Uses browser remote debugging
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
196.251.70.94:43213
127.0.0.1:43213
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5c2d7dd9-7c68-4838-9a23-1cfe78e00a69
Unpacked files
SH256 hash:
f777dd41f5ab3c306874f9f9548629f6767ec0ea8b942c9c60103dd4956604f2
MD5 hash:
f03716d5f679fc68462ed04b73bc7acb
SHA1 hash:
31c35b921a2d3826d5c3b87a8246d8aefe0b167f
Link:
https://www.unpac.me/results/fac56a57-7790-4367-8f49-ad3a16ecae71/
SH256 hash:
228d895cee2908877203f7701ed97b427528176ff68449650f98c6281d9e73e3
MD5 hash:
e707423c673d035186502377e8d69738
SHA1 hash:
2d6ccdbf0635cc2e7b73f88fa96818f42c422bd9
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/fac56a57-7790-4367-8f49-ad3a16ecae71/
SH256 hash:
77e50dfd7c808be340ba91aec49f33263ff777cb37df5d3ffd3c884a82cb7263
MD5 hash:
150fee4c4d313eacbd785b1b89713368
SHA1 hash:
321fe4cb0320860d9e7b56ab93ba3a48f76a153c
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/fac56a57-7790-4367-8f49-ad3a16ecae71/
SH256 hash:
ff11abe947e7b8d3bfdef97416ed41fdc0c8b0913fe6a46c1830e1d4f9a20add
MD5 hash:
b2afcfddd7b9dc2694227f087484e0ae
SHA1 hash:
7cb5147f12b4a7916b550044357152e55051e7f7
Detections:
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Remcos
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/fac56a57-7790-4367-8f49-ad3a16ecae71/
Parent samples :
f777dd41f5ab3c306874f9f9548629f6767ec0ea8b942c9c60103dd4956604f2
4ea5e6ef99e87b4a2b50284b8d82b4a7d168bc3ccb13bea488bc6bd85f47dae3
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f777dd41f5ab/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/f777dd41f5ab3c306874f9f9548629f6767ec0ea8b942c9c60103dd4956604f2

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
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)

File information

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

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