MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5f811f675d487ef9d0cd10ba5f095edadcb38eeeedaa5ec897b3994b954d3212. 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: 20


Intelligence 20 IOCs 1 YARA 30 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5f811f675d487ef9d0cd10ba5f095edadcb38eeeedaa5ec897b3994b954d3212
SHA3-384 hash: e2656a2aa4047e883dbdd9102f321b88a06bcda4e2f0234df95cd48447942b14d99dddb56d2346ddd3f369c9babda383
SHA1 hash: 048d32a9b666af9fc5ba2e4638a773f6d335e458
MD5 hash: 7036b2b872d11e0cdcf42b71821155ff
humanhash: don-ink-thirteen-autumn
File name:dLJRb1K5nFpNyJw.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'020'928 bytes
First seen:2025-06-15 06:55:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:JkiTMbYjntL2Q3bTIToYiUXuwNT3tRlq:JtBtD8T8cz1
TLSH T1432512442395D903E4AA07B82976E37457B87E9E7911C227CFFE7CEB3A3335458402A6
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 abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
198.55.98.155:2556

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
198.55.98.155:2556 https://threatfox.abuse.ch/ioc/1544900/

Intelligence

File Origin
# of uploads :
1
# of downloads :
721
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
dLJRb1K5nFpNyJw.exe
Verdict:
Malicious activity
Analysis date:
2025-06-15 06:56:21 UTC
Tags:
rat remcos stealer netreactor mpress
Link:
https://app.any.run/tasks/782949bb-01e5-49cf-a9e9-79c4cde5b951

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/9515/
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=684e6e6c07b5e8c1cfe6d345
Tags:
crypted keylog lien remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Setting a keyboard event handler
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a file in the %temp% directory
Launching a process
Reading critical registry keys
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/684e6e64fd02ed5e05ab31f6/reports/9ff71898-2c4e-42d0-ba2a-5fef2c2afa91/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/5f811f675d487ef9d0cd10ba5f095edadcb38eeeedaa5ec897b3994b954d3212
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/14834fad-d398-4c37-8815-d52b35a5e72c
Result
Threat name:
Remcos, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1714855
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for dropped file
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 hidden mapped module (file has been removed from disk)
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
Sigma detected: Remcos
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)
Yara detected PureLog Stealer
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: 1714855 Sample: dLJRb1K5nFpNyJw.exe Startdate: 15/06/2025 Architecture: WINDOWS Score: 100 36 www.donmichiko.com 2->36 38 geoplugin.net 2->38 52 Suricata IDS alerts for network traffic 2->52 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 12 other signatures 2->58 8 dLJRb1K5nFpNyJw.exe 3 2->8         started        signatures3 process4 file5 26 C:\Users\user\...\dLJRb1K5nFpNyJw.exe.log, ASCII 8->26 dropped 60 Contains functionality to bypass UAC (CMSTPLUA) 8->60 62 Contains functionalty to change the wallpaper 8->62 64 Contains functionality to steal Chrome passwords or cookies 8->64 66 4 other signatures 8->66 12 dLJRb1K5nFpNyJw.exe 4 20 8->12         started        signatures6 process7 dnsIp8 40 www.donmichiko.com 198.55.98.155, 2556, 49715, 49716 ASN-QUADRANET-GLOBALUS United States 12->40 42 geoplugin.net 178.237.33.50, 49717, 80 ATOM86-ASATOM86NL Netherlands 12->42 28 C:\Users\user\AppData\Local\Temp\THFE1E.tmp, MS-DOS 12->28 dropped 30 C:\Users\user\AppData\Local\Temp\THFDFE.tmp, MS-DOS 12->30 dropped 32 C:\Users\user\AppData\Local\Temp\THFDDE.tmp, PE32 12->32 dropped 34 C:\ProgramData\dfghjk\ghj.dat, data 12->34 dropped 68 Detected Remcos RAT 12->68 70 Maps a DLL or memory area into another process 12->70 72 Installs a global keyboard hook 12->72 17 svchost.exe 1 12->17         started        20 svchost.exe 1 12->20         started        22 svchost.exe 14 12->22         started        24 2 other processes 12->24 file9 signatures10 process11 signatures12 44 Tries to steal Instant Messenger accounts or passwords 17->44 46 Tries to harvest and steal browser information (history, passwords, etc) 17->46 48 Tries to steal Mail credentials (via file / registry access) 20->48 50 Tries to steal Mail credentials (via file registry) 24->50
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/5f811f675d487ef9d0cd10ba5f095edadcb38eeeedaa5ec897b3994b954d3212
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5f811f675d487ef9d0cd10ba5f095edadcb38eeeedaa5ec897b3994b954d3212/
Threat name:
Win32.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2025-06-15 06:55:35 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=l6ar6z25jb7ptugncc5f6ck63lolhdxo5wvf5sexwomuxfkngija._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:3-in-1-dns collection discovery rat
Link:
https://tria.ge/reports/250615-hp3jda1mt3/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
www.donmichiko.com:2556
www.dondodovn.com:2556
odijohn.duckdns.org:2556
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/31a9e3c8-3094-4ebb-abbd-50919ddbba1f
Unpacked files
SH256 hash:
5f811f675d487ef9d0cd10ba5f095edadcb38eeeedaa5ec897b3994b954d3212
MD5 hash:
7036b2b872d11e0cdcf42b71821155ff
SHA1 hash:
048d32a9b666af9fc5ba2e4638a773f6d335e458
Link:
https://www.unpac.me/results/c9f2e8fc-cba0-4d38-a53f-c10b0d5528dc/
SH256 hash:
34655b3ad6cb0551610ad69e45436e6d8f2dee2102761159c3cb066600fa567d
MD5 hash:
92c942694fd7650b1ac75e21b14840e0
SHA1 hash:
6084537c03064134d0fc7800ed2991e6c101f253
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/c9f2e8fc-cba0-4d38-a53f-c10b0d5528dc/
SH256 hash:
96e9950cf67974cb77800bfde13101e99a4e42f3cb9d72c3bc23231d84556f43
MD5 hash:
c779c93bc76b82192b8b4e404bc057f3
SHA1 hash:
a66b3d25c0e0fa462bb97091591002a43c89b887
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/c9f2e8fc-cba0-4d38-a53f-c10b0d5528dc/
Parent samples :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 hash:
5575e267ff4105b75e9f21a25fa5f8844c9274b64baf9a252732de72d1822375
MD5 hash:
1c2980e8156eb4dceae03e978be3afc2
SHA1 hash:
cf792a39afc109f0a2813505fb2af42b66f26b40
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/c9f2e8fc-cba0-4d38-a53f-c10b0d5528dc/
Parent samples :
5f811f675d487ef9d0cd10ba5f095edadcb38eeeedaa5ec897b3994b954d3212
f3729882935d2df83b0932ee1e19104a4618cc67cca2c332ed28c425482f378d
cdf8c43cdca0aae5ebae3ae4155f8ec78d84eec31e864c0cc843b99c61d36c1d
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/5f811f675d48/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/5f811f675d487ef9d0cd10ba5f095edadcb38eeeedaa5ec897b3994b954d3212

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:nirsoft_v1
Create hunting rule
Author:RandomMalware
Rule name:pe_detect_tls_callbacks
Create hunting rule
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:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:Runtime_Broker_Variant_1
Create hunting rule
Author:Sn0wFr0$t
Description:Detecting malicious Runtime Broker
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
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:TeslaCryptPackedMalware
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/9515/

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 (HIGH_ENTROPY_VA)high
CHECK_TRUST_INFORequires Elevated Execution (Unrestricted:true)high

Comments