MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b89219f349b4d70a5a2388c390fcff2aff6267dfec60887dafbcaf948ff96a56. 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 YARA 30 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b89219f349b4d70a5a2388c390fcff2aff6267dfec60887dafbcaf948ff96a56
SHA3-384 hash: 9a650658ef1ac84c600148c20c26f2c87b6daf11eb97840ed55c3d1e8b0f4cc1e8d2944f821e97e6102a97990f4f9b7a
SHA1 hash: 50178bd43f376142642b89627744db05e48d7d64
MD5 hash: 3b38911c23c2a02b9b841c5433c7ec8b
humanhash: timing-minnesota-helium-illinois
File name:3b38911c23c2a02b9b841c5433c7ec8b.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'100'288 bytes
First seen:2025-02-12 15:59:57 UTC
Last seen:Never
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:raC1DfgFhABaTWJMEcP7+jWOBOBGwEpNn2rs7wsRGhED:OCFtMXPSjWO+S2rwwsXD
Threatray 4'275 similar samples on MalwareBazaar
TLSH T12035E0C03765AB06CE694BB09535EDB053B51D6AB020F6E6AEC93BDB79B97005D08F03
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
File icon (PE):PE icon
dhash icon f4fbb3e4e486d3e9 (7 x RemcosRAT, 4 x SnakeKeylogger, 3 x AgentTesla)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
468
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
3b38911c23c2a02b9b841c5433c7ec8b.exe
Verdict:
Malicious activity
Analysis date:
2025-02-12 16:23:08 UTC
Tags:
remcos rat remote
Link:
https://app.any.run/tasks/250f9653-29b9-4fdf-b3d7-d841a236136a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Nanocore-10020802-0
Create hunting rule

Win.Packed.Genie8dn-10041871-0
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67acc59a4f5583c4c4d86c99
Tags:
agenttesla remcos
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a 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
Searching for synchronization primitives
Creating a process from a recently created file
Reading critical registry keys
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected remcos
Link:
https://www.filescan.io/uploads/67acc59e4d32c7a4e2bb6149/reports/2f4bb53b-87e0-46d5-bd2d-e39053341239/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/b89219f349b4d70a5a2388c390fcff2aff6267dfec60887dafbcaf948ff96a56
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/87e078e3-f638-4131-9f0e-612d7840fe4a
Result
Threat name:
Remcos, AgentTesla
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1613297
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
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
Detected Remcos RAT
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
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
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
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 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)
Tries to steal Mail credentials (via file registry)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected Telegram RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1613297 Sample: wYopb8erpU.exe Startdate: 12/02/2025 Architecture: WINDOWS Score: 100 64 api.telegram.org 2->64 66 fidelity123.zapto.org 2->66 68 2 other IPs or domains 2->68 90 Suricata IDS alerts for network traffic 2->90 92 Found malware configuration 2->92 94 Malicious sample detected (through community Yara rule) 2->94 98 14 other signatures 2->98 8 wYopb8erpU.exe 7 2->8         started        12 uwacsjwiPZW.exe 5 2->12         started        14 mykksg.exe 2->14         started        16 mykksg.exe 2->16         started        signatures3 96 Uses the Telegram API (likely for C&C communication) 64->96 process4 file5 56 C:\Users\user\AppData\...\uwacsjwiPZW.exe, PE32 8->56 dropped 58 C:\Users\...\uwacsjwiPZW.exe:Zone.Identifier, ASCII 8->58 dropped 60 C:\Users\user\AppData\Local\...\tmpCF62.tmp, XML 8->60 dropped 62 C:\Users\user\AppData\...\wYopb8erpU.exe.log, ASCII 8->62 dropped 108 Tries to steal Mail credentials (via file registry) 8->108 110 Uses schtasks.exe or at.exe to add and modify task schedules 8->110 130 2 other signatures 8->130 18 wYopb8erpU.exe 2 18 8->18         started        23 powershell.exe 23 8->23         started        25 schtasks.exe 1 8->25         started        112 Multi AV Scanner detection for dropped file 12->112 114 Contains functionalty to change the wallpaper 12->114 116 Contains functionality to steal Chrome passwords or cookies 12->116 132 3 other signatures 12->132 27 uwacsjwiPZW.exe 12->27         started        29 schtasks.exe 1 12->29         started        118 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->118 120 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->120 122 Tries to steal Mail credentials (via file / registry access) 14->122 124 Tries to harvest and steal ftp login credentials 16->124 126 Tries to harvest and steal browser information (history, passwords, etc) 16->126 128 Installs a global keyboard hook 16->128 signatures6 process7 dnsIp8 70 103.186.117.61, 49713, 49716, 49717 AARNET-AS-APAustralianAcademicandResearchNetworkAARNe unknown 18->70 72 geoplugin.net 178.237.33.50, 49726, 80 ATOM86-ASATOM86NL Netherlands 18->72 52 C:\Users\user\AppData\Local\Temp\dwn.exe, Unknown 18->52 dropped 54 C:\ProgramData\remcos\logs.dat, Unknown 18->54 dropped 100 Detected Remcos RAT 18->100 102 Maps a DLL or memory area into another process 18->102 104 Installs a global keyboard hook 18->104 31 dwn.exe 16 17 18->31         started        36 wYopb8erpU.exe 18->36         started        38 wYopb8erpU.exe 18->38         started        48 2 other processes 18->48 106 Loading BitLocker PowerShell Module 23->106 40 WmiPrvSE.exe 23->40         started        42 conhost.exe 23->42         started        44 conhost.exe 25->44         started        46 conhost.exe 29->46         started        file9 signatures10 process11 dnsIp12 74 api.telegram.org 149.154.167.220, 443, 49753, 49764 TELEGRAMRU United Kingdom 31->74 76 api.ipify.org 104.26.13.205, 443, 49742, 49837 CLOUDFLARENETUS United States 31->76 50 C:\Users\user\AppData\Roaming\...\mykksg.exe, PE32 31->50 dropped 78 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 31->78 80 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 31->80 82 Tries to steal Mail credentials (via file / registry access) 31->82 88 2 other signatures 31->88 84 Tries to steal Instant Messenger accounts or passwords 36->84 86 Tries to harvest and steal browser information (history, passwords, etc) 38->86 file13 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b89219f349b4d70a5a2388c390fcff2aff6267dfec60887dafbcaf948ff96a56
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b89219f349b4d70a5a2388c390fcff2aff6267dfec60887dafbcaf948ff96a56/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-02-11 07:50:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
39
AV detection:
29 of 37 (78.38%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xcjbt42jwtlquwrdrdbzb7h7fl7wez675rqiq7npxsxzjd7znjla._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
remcos
Create hunting rule
Similar samples:
3f2491926888db2c9d6c7b1a426ff41e1cd4a13bc922156a814b9fe3032ff809
RemcosRAT
5e95fb52da2144a06a66a593a6f12877108ebcdeb69f8f60ad010831d4fce1eb
RemcosRAT
802838172640a2ed4ea87b5ecbfd07629e151f25ae46e1c03d3ae11b0f78add6
RemcosRAT
a1333650518e3e435421e28233c84f8a5a1ca03607c5289a01da3f86e4046565
RemcosRAT
ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a
RemcosRAT
d1b50fc6ce79320a88defef33baf6a51e30845bd13ab2b52f7925ba0b8f527cd
RemcosRAT
error
RemcosRAT
+ 4'265 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:latentbot family:remcos botnet:feb 07 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250212-tfp3gaykfl/
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
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
LatentBot
Latentbot family
Remcos
Remcos family
Malware Config
C2 Extraction:
fidelity123.zapto.org:9373
103.186.117.61:9373
fidelity123.zapto.org
Verdict:
Malicious
Tags:
Win.Packed.Nanocore-10020802-0
YARA:
n/a
Link:
https://app.threat.zone/submission/794fb746-0cd4-4aab-84fe-2c9d7800d85d
Unpacked files
SH256 hash:
b89219f349b4d70a5a2388c390fcff2aff6267dfec60887dafbcaf948ff96a56
MD5 hash:
3b38911c23c2a02b9b841c5433c7ec8b
SHA1 hash:
50178bd43f376142642b89627744db05e48d7d64
Link:
https://www.unpac.me/results/e91d465f-72fe-4a37-8ecb-f0af4ab455c8/
SH256 hash:
ee5a1ebe3e51bb7bb7eeb73f17bf1a6855952a5378dfb1556feabf10490238a3
MD5 hash:
4c1c6e8f26852c963fbaceca3447a55a
SHA1 hash:
42800650697d7ce67d492df2980cd58bf788f7cc
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/e91d465f-72fe-4a37-8ecb-f0af4ab455c8/
SH256 hash:
329f95ab097890b6c4ae8cd1a7b0a11359c524a2dfae58e2f867a9ae84e1ec7b
MD5 hash:
b87b862e0b9ec6f5d26d13d5901886e1
SHA1 hash:
891492239c1acc420fa5bef813635f9e0be2300f
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
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/e91d465f-72fe-4a37-8ecb-f0af4ab455c8/
SH256 hash:
e712bcd56fe64742c0f674f3acff83490f8103c260ea3389f56151b5066b7cd3
MD5 hash:
7bad4197d1ae020c9049a782eb9a71d2
SHA1 hash:
e1253047ea92beb7d161b106765ad8b03bc86b1e
Link:
https://www.unpac.me/results/e91d465f-72fe-4a37-8ecb-f0af4ab455c8/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b89219f349b4/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/b89219f349b4d70a5a2388c390fcff2aff6267dfec60887dafbcaf948ff96a56

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
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_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_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
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:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
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_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.

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

Comments