MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009. 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 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009
SHA3-384 hash: b33e245e8de3a5fadb430fa7dce849aa41da92ef5209cc6a577fc9e1852ca6dd47acc14421c1207c2538e93b9125fc57
SHA1 hash: f5d71e357625e5bd6ad149c3bfc100a4c03f11bf
MD5 hash: 868890519927ac07f2cb07ad6eaa06f2
humanhash: kentucky-october-bacon-one
File name:1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'037'320 bytes
First seen:2025-04-08 07:27:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:lIj2n6n6Lf054fRMyfZS99TdtgHPiQAt4PViR:Gjbn6GIq9TdWHPiQAqPS
Threatray 4'240 similar samples on MalwareBazaar
TLSH T13A250268AB98C817C6A727345670E73417BB6EC9A835E3065FDC6DEB7F57B004A04382
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 70cca2b2b2a2cc70 (7 x Formbook, 7 x SnakeKeylogger, 5 x MassLogger)
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
433
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009
Verdict:
Malicious activity
Analysis date:
2025-04-08 08:49:02 UTC
Tags:
rat remcos remote
Link:
https://app.any.run/tasks/39f68ab4-e3c5-427d-adfe-3f673415e889

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=67f4d1eba695a0cd1fac9e48
Tags:
virus krypt msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
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
Setting a keyboard event handler
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
expired-cert invalid-signature obfuscated packed packed packer_detected remcos signed
Link:
https://www.filescan.io/uploads/67f4d01440adfb5162bbe992/reports/f91ef179-5cca-4cea-bab5-1b0df66b1b0f/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d2051e18-8780-489d-afbd-4650da31c81c
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1659100
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
Antivirus detection for URL or domain
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
Found malware configuration
Installs a global keyboard hook
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: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1659100 Sample: kZSC4SbtuA.exe Startdate: 08/04/2025 Architecture: WINDOWS Score: 100 46 oyo.work.gd 2->46 48 geoplugin.net 2->48 54 Suricata IDS alerts for network traffic 2->54 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 10 other signatures 2->60 8 kZSC4SbtuA.exe 7 2->8         started        12 fUVbxIBvzd.exe 5 2->12         started        signatures3 process4 file5 38 C:\Users\user\AppData\...\fUVbxIBvzd.exe, PE32 8->38 dropped 40 C:\Users\...\fUVbxIBvzd.exe:Zone.Identifier, ASCII 8->40 dropped 42 C:\Users\user\AppData\Local\...\tmp5BDE.tmp, XML 8->42 dropped 44 C:\Users\user\AppData\...\kZSC4SbtuA.exe.log, ASCII 8->44 dropped 62 Uses schtasks.exe or at.exe to add and modify task schedules 8->62 64 Adds a directory exclusion to Windows Defender 8->64 14 powershell.exe 23 8->14         started        17 powershell.exe 23 8->17         started        19 kZSC4SbtuA.exe 2 15 8->19         started        22 schtasks.exe 1 8->22         started        66 Antivirus detection for dropped file 12->66 68 Multi AV Scanner detection for dropped file 12->68 70 Contains functionalty to change the wallpaper 12->70 72 4 other signatures 12->72 24 schtasks.exe 1 12->24         started        26 fUVbxIBvzd.exe 12->26         started        signatures6 process7 dnsIp8 74 Loading BitLocker PowerShell Module 14->74 28 WmiPrvSE.exe 14->28         started        30 conhost.exe 14->30         started        32 conhost.exe 17->32         started        50 oyo.work.gd 176.65.141.49, 2431, 49694 WEBTRAFFICDE Germany 19->50 52 geoplugin.net 178.237.33.50, 49695, 80 ATOM86-ASATOM86NL Netherlands 19->52 76 Installs a global keyboard hook 19->76 34 conhost.exe 22->34         started        36 conhost.exe 24->36         started        signatures9 process10
Score:
74%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-03-24 03:54:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dop75chmfeqgp3y6v7x7ukcnr6ysuavq2uxtr67gqnflpjoakaeq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
remcos
Create hunting rule
Similar samples:
0bc4589749f91661e58192bb1200809244d27248e8ee1935baeaaaefd60aa7f6
RemcosRAT
1b8e6aed1e468008650e35a6442152c2a9a2aa6b75d4e93857e85642b0451368
RemcosRAT
1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009
RemcosRAT
73d157aceb0cbefa3a24509f157e8b59c40881acd0e3360d026fee5845e19f2c
RemcosRAT
7cc14c13ddf6719afb12d3ef8f7ebe89de36ab0fb15fb0c2c908383f44f53c7b
RemcosRAT
d5eea8b6b2924e5f41d0562bd73b61267b99e3e7787d83d19ce5dd67f95feb85
RemcosRAT
e9c8eec1859524e1d0bc49cf7156a0eb867af6d301b6c98ee82c425ab5d12bda
RemcosRAT
error
RemcosRAT
+ 4'230 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:icu discovery execution rat
Link:
https://tria.ge/reports/250408-javqnaz1cs/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Remcos
Remcos family
Malware Config
C2 Extraction:
oyo.work.gd:2431
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1ab17668-d00a-4beb-9614-d52ee0351c0a
Unpacked files
SH256 hash:
1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009
MD5 hash:
868890519927ac07f2cb07ad6eaa06f2
SHA1 hash:
f5d71e357625e5bd6ad149c3bfc100a4c03f11bf
Link:
https://www.unpac.me/results/cec23108-e879-452c-9fa8-df487f590a89/
SH256 hash:
3490267fe083af05142cd680568060d0c8d9ea6b655b8c01b91443db9bad4245
MD5 hash:
da18449a4aca77eab7a746398dc1f05d
SHA1 hash:
5a56fcff5d34f6c2ebf992ec9d6dcf71131c02e5
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/cec23108-e879-452c-9fa8-df487f590a89/
SH256 hash:
72bfd47266006b378f1b63658456e1fa450b4c8fa93a1e0c484f51261573257a
MD5 hash:
4966311889e08f67f7fa6bae9272372e
SHA1 hash:
6fbbd39bcdcf4891b07bab95d14e20f00ce710ce
Link:
https://www.unpac.me/results/cec23108-e879-452c-9fa8-df487f590a89/
SH256 hash:
31918e8fda9c8ab5a65d4c3fa1285410edeffc50d0a624d98ea7baced0cd0d97
MD5 hash:
25e83008c6d89c541def321fbffb2586
SHA1 hash:
fb88c2c5f9c1ce78224d18b410b7f3596e6c3545
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_EventViewer
Create hunting rule
Link:
https://www.unpac.me/results/cec23108-e879-452c-9fa8-df487f590a89/
Parent samples :
baa92cdc50fba4cec0928b6b1f7d1b89611dedfb9ddb2f1bef9236bc0422c460
f6e4833668ca8d61f06a531d2dbaa1ec38f0905c7a3d4523c1cb142df066d74e
0bc4589749f91661e58192bb1200809244d27248e8ee1935baeaaaefd60aa7f6
1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94
1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009
48075512d81806049d193cf798c12f30110cb03ccd0f18bc69e9aa1af69693f8
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1b9ffe88ec29/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/1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009

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_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
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: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.

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