MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9fa96e10c0fb448f32b5484a19baa00bdb26b47e8e245c91661d95131d52c959. 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: 8


Intelligence 8 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9fa96e10c0fb448f32b5484a19baa00bdb26b47e8e245c91661d95131d52c959
SHA3-384 hash: 61fc4004cfd5912e85c643d1e11d47cbb99580af7ed345b82c5c57fb01c813740bf1d75a8aeba32d19c67b2a2bc595de
SHA1 hash: ee2391e96230bbf6e5d76e381298f4838d12fd44
MD5 hash: 7b20e94b77eff25e3ea2ce73bacff1c1
humanhash: red-mississippi-friend-carpet
File name:remcos_a.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:707'921 bytes
First seen:2025-01-30 08:25:10 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 12288:H8hhjvEbJcGq8/SW1UoHAsHEvpyojFtS2ZM1qVYWorigZfzAZKJvfSewJLdpD/+o:H8hhSJcGq8/ZUOAsHAE8jbVYWjrLLdV5
Threatray 13 similar samples on MalwareBazaar
TLSH T1C2E41294CF38196D2B7A753739AF8538516588A5C4EEC3FEF4AD24B21EDBB8109C1881
Magika vba
Reporter JAMESWT_WT
Tags:156-253-250-62 RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
114
Origin country :
IT IT
Vendor Threat Intelligence
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=679b38b339cd5095f12c0c52
Tags:
obfuscate shell sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm fingerprint monero obfuscated powershell
Link:
https://www.filescan.io/uploads/679b379c414c56eb950295d6/reports/8575b2f9-1c28-4711-ba51-c3f3cec61798/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/9fa96e10c0fb448f32b5484a19baa00bdb26b47e8e245c91661d95131d52c959
Result
Verdict:
MALICIOUS
Details
Base64 Encoded Powershell Directives
Detected one or more base64 encoded Powershell directives.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1602833
Signature
.NET source code contains a sample name check
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Creates multiple autostart registry keys
Detected Remcos RAT
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded Invoke Keyword
Sigma detected: Powerup Write Hijack DLL
Sigma detected: Register Wscript In Run Key
Sigma detected: Remcos
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Uses dynamic DNS services
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1602833 Sample: remcos_a.vbs Startdate: 30/01/2025 Architecture: WINDOWS Score: 100 114 kobo2025rmc.duckdns.org 2->114 116 0x0.st 2->116 122 Sigma detected: Register Wscript In Run Key 2->122 124 Suricata IDS alerts for network traffic 2->124 126 Found malware configuration 2->126 130 18 other signatures 2->130 11 wscript.exe 2 2->11         started        14 wscript.exe 2->14         started        16 wscript.exe 2->16         started        18 7 other processes 2->18 signatures3 128 Uses dynamic DNS services 114->128 process4 signatures5 150 VBScript performs obfuscated calls to suspicious functions 11->150 152 Wscript starts Powershell (via cmd or directly) 11->152 154 Windows Scripting host queries suspicious COM object (likely to drop second stage) 11->154 156 Suspicious execution chain found 11->156 20 cmd.exe 1 11->20         started        23 cmd.exe 14->23         started        25 cmd.exe 16->25         started        158 Loading BitLocker PowerShell Module 18->158 27 cmd.exe 18->27         started        29 conhost.exe 18->29         started        31 conhost.exe 18->31         started        33 4 other processes 18->33 process6 signatures7 136 Suspicious powershell command line found 20->136 138 Wscript starts Powershell (via cmd or directly) 20->138 140 Bypasses PowerShell execution policy 20->140 35 cmd.exe 2 20->35         started        38 conhost.exe 20->38         started        40 cmd.exe 23->40         started        42 conhost.exe 23->42         started        44 cmd.exe 25->44         started        46 conhost.exe 25->46         started        48 cmd.exe 27->48         started        50 conhost.exe 27->50         started        process8 signatures9 132 Suspicious powershell command line found 35->132 134 Wscript starts Powershell (via cmd or directly) 35->134 52 powershell.exe 35->52         started        57 powershell.exe 14 35 35->57         started        59 conhost.exe 35->59         started        61 powershell.exe 40->61         started        63 powershell.exe 40->63         started        65 conhost.exe 40->65         started        67 powershell.exe 44->67         started        69 conhost.exe 44->69         started        71 2 other processes 48->71 process10 dnsIp11 118 kobo2025rmc.duckdns.org 192.169.69.26, 14646, 58950, 59015 WOWUS United States 52->118 98 C:\Users\user\...\WindowsUpdate_643.vbs, ASCII 52->98 dropped 100 C:\Users\user\...\WindowsUpdate_643.bat, ASCII 52->100 dropped 142 Detected Remcos RAT 52->142 144 Creates multiple autostart registry keys 52->144 146 Found suspicious powershell code related to unpacking or dynamic code loading 52->146 120 0x0.st 168.119.145.117, 443, 49699, 58899 HETZNER-ASDE Germany 57->120 102 C:\Users\user\AppData\...\1f2nrjbh.cmdline, Unicode 57->102 dropped 148 Loading BitLocker PowerShell Module 57->148 73 csc.exe 3 57->73         started        76 cmstp.exe 8 7 57->76         started        104 C:\Users\user\...\WindowsUpdate_404.bat, ASCII 61->104 dropped 78 csc.exe 63->78         started        80 cmstp.exe 63->80         started        82 csc.exe 67->82         started        84 cmstp.exe 67->84         started        86 csc.exe 71->86         started        88 cmstp.exe 71->88         started        file12 signatures13 process14 file15 106 C:\Users\user\AppData\Local\...\1f2nrjbh.dll, PE32 73->106 dropped 90 cvtres.exe 1 73->90         started        108 C:\Users\user\AppData\Local\...\2g5b5fpk.dll, PE32 78->108 dropped 92 cvtres.exe 78->92         started        110 C:\Users\user\AppData\Local\...\arz0zb00.dll, PE32 82->110 dropped 94 cvtres.exe 82->94         started        112 C:\Users\user\AppData\Local\...\1ev4ntun.dll, PE32 86->112 dropped 96 cvtres.exe 86->96         started        process16
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/9fa96e10c0fb448f32b5484a19baa00bdb26b47e8e245c91661d95131d52c959
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9fa96e10c0fb448f32b5484a19baa00bdb26b47e8e245c91661d95131d52c959/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=t6uw4ega7nci6mvvjbfbtovabpnsnnd6rysfzelgdwkrghkszfmq._file
Verdict:
malicious
Label(s):
donut_injector
Create hunting rule
Similar samples:
0f5f468b4a87a6d4c265b4dd740ba78e763da683d2a0bf64a7553a0bd1b99137
RemcosRAT
0fd542be41273b2709ed1b8b4eb7a50d284a20afbd6a4a0a4f50f482a30435d1
RemcosRAT
16b9fe38c02f28e15adc46529c75a1eb9f4611f6c743c9495db5c94ee6221b6d
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3f56dc2cefce8586690102c3b6a071dc47238d36c1664c5f78a8a51e5369aa48
RemcosRAT
6a8612ad8ee5e6d6ea4a422555c0491e643cbba21c98bbab5482b6e6ca6d5312
RemcosRAT
acdcc9515147f1691ddb2c7cbd352a67ef6f0e57cb72ea593df2bd2fe01f0509
RemcosRAT
cabab7150645e3aa3a43161e49fbaf2b2435b2ad2026a4f62fec0e0dd389736d
RemcosRAT
d53671139f6447e4938fe515dc4fae6c1ac08a68ca39de119e98ab985a055f4b
RemcosRAT
df22c1bf851be9c64682e7838b6b88358c64a9e3fd6e8ad305f7303d06660323
RemcosRAT
e37d437e1fa17b0aa472a89f6d790095c123850ae835e19728d53a5675a24aa6
RemcosRAT
error
RemcosRAT
+ 3 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution persistence
Link:
https://tria.ge/reports/250130-kbvbyswkew/
Behaviour
Kills process with taskkill
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in System32 directory
Adds Run key to start application
Checks computer location settings
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Base64_Encoded_Powershell_Directives
Create hunting rule
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: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_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
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: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.

Web download

RemcosRAT

Visual Basic Script (vbs) vbs 9fa96e10c0fb448f32b5484a19baa00bdb26b47e8e245c91661d95131d52c959

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3420661/
  
Delivery method
Distributed via web download

Comments