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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a27568397d62fe4c514babc71eea5364b8a68c529d207ae7ca6b17fe16acc4cd. 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



Arechclient2


Vendor detections: 16


Intelligence 16 IOCs YARA 19 File information Comments

SHA256 hash: a27568397d62fe4c514babc71eea5364b8a68c529d207ae7ca6b17fe16acc4cd
SHA3-384 hash: b8dbe02f229e6cf3e3e958ade8673bfd7b83a877f1cdada3a1670c1ecd87de716fa02e3f92e255c9b57f7982c2855135
SHA1 hash: 0bc4c6b48487ec98b13babf950b0f3681f487959
MD5 hash: 46e6720e297b7a5a5fc6b26517636172
humanhash: comet-quebec-timing-xray
File name:crytest.msi
Download: download sample
Signature Arechclient2
File size:3'141'632 bytes
First seen:2026-11-10 01:56:24 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 49152:iVxAJsa/Shp5y2t3RExFhzFzEuRMXI6nwNRI5OzXJtz4XSZ:iVKp/SP5yg3REfVFwP46wNRUdi
TLSH T138E533B4B2888F37D7412238515A139646A1FC89862ED0FD5B83B35DBE3DC4D2335B9A
TrID 86.8% (.MSI) Microsoft Windows Installer (454500/1/170)
11.6% (.MST) Windows SDK Setup Transform script (61000/1/5)
1.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika msi
Reporter aachum
Tags:65-108-133-85 Arechclient2 AsgardProtector dropped-by-ACRStealer msi SectopRAT


Avatar
iamaachum
https://demo.ccgador8hnace.net/crytest.msi

SectopRAT/Arechclient2 C2: 65.108.133.85

Intelligence


File Origin
# of uploads :
1
# of downloads :
73
Origin country :
PT PT
Vendor Threat Intelligence
Verdict:
Malicious
Score:
93.3%
Tags:
autorun reline
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating synchronization primitives
Searching for synchronization primitives
Creating a file in the Windows subdirectories
Creating a file
Running batch commands
Creating a process from a recently created file
Creating a process with a hidden window
Connection attempt
Sending a custom TCP request
DNS request
Enabling autorun by creating a file
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
anti-debug CAB installer installer obfuscated obfuscated qrcode
Result
Threat name:
n/a
Detection:
malicious
Classification:
spyw.expl.evad
Score:
100 / 100
Signature
Creates a thread in another existing process (thread injection)
Drops script or batch files to the startup folder
Drops VBS files to the startup folder
Injects a PE file into a foreign processes
Installs a global keyboard hook
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Crypto Currency Wallets
Unusual module load detection (module proxying)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 2002532 Sample: crytest.msi Startdate: 10/11/2026 Architecture: WINDOWS Score: 100 61 k8s-ingressn-bscmainn-92244380d0-811109128.us-east-1.elb.amazonaws.com 2->61 63 bsc-dataseed4.binance.org 2->63 65 3 other IPs or domains 2->65 77 Sigma detected: Drops script at startup location 2->77 79 Sigma detected: WScript or CScript Dropper 2->79 11 msiexec.exe 132 89 2->11         started        14 wscript.exe 1 2->14         started        17 cmd.exe 1 2->17         started        19 2 other processes 2->19 signatures3 process4 file5 53 C:\Users\...\x86_64-w64-mingw32uwp-gcc.exe, PE32+ 11->53 dropped 55 C:\Users\...\x86_64-w64-mingw32uwp-clang.exe, PE32+ 11->55 dropped 57 C:\Users\user\AppData\Local\...\objcopy.exe, PE32+ 11->57 dropped 59 26 other files (none is malicious) 11->59 dropped 21 cmd.exe 1 11->21         started        93 Windows Scripting host queries suspicious COM object (likely to drop second stage) 14->93 95 WScript reads language and country specific registry keys (likely country aware script) 14->95 23 AutoIt3_x64.exe 14->23         started        26 AutoIt3_x64.exe 17->26         started        28 conhost.exe 17->28         started        30 AutoIt3_x64.exe 19->30         started        signatures6 process7 signatures8 32 AutoIt3_x64.exe 4 21->32         started        36 conhost.exe 21->36         started        81 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 26->81 83 Installs a global keyboard hook 28->83 process9 file10 47 C:\ProgramData\Capital216\AutoIt3_x64.exe, PE32+ 32->47 dropped 73 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 32->73 38 AutoIt3_x64.exe 14 20 32->38         started        75 Installs a global keyboard hook 36->75 signatures11 process12 dnsIp13 67 65.108.133.85 HETZNER-ASDE Finland 38->67 69 18.204.117.163 AMAZON-AES-AmazoncomIncUS United States 38->69 71 k8s-ingressn-bscmainn-92244380d0-811109128.us-east-1.elb.amazonaws.com 44.220.126.122 AMAZON-AES-AmazoncomIncUS United States 38->71 49 C:\Users\user\AppData\...\Capital216.vbs, ASCII 38->49 dropped 51 C:\Users\user\AppData\...\Capital216.bat, DOS 38->51 dropped 85 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 38->85 87 Drops script or batch files to the startup folder 38->87 89 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 38->89 91 8 other signatures 38->91 43 chrome.exe 38->43         started        file14 signatures15 process16 process17 45 chrome.exe 43->45 injected
Verdict:
Malware
YARA:
4 match(es)
Tags:
.Net AutoIt CAB:COMPRESSION:MSZIP Decompiled Executable Managed .NET Office Document PDB Path PE (Portable Executable) PE File Layout SOS: 0.13 SOS: 0.16 SOS: 0.22 SOS: 0.23 SOS: 0.25 SOS: 0.31 SOS: 0.34 SOS: 0.58 Suspect SVG T1059.007
Result
Malware family:
sectoprat
Score:
  10/10
Tags:
family:sectoprat discovery execution persistence privilege_escalation ransomware rat trojan
Behaviour
Checks SCSI registry key(s)
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Event Triggered Execution: Installer Packages
Executes a command shell one-liner
Reads the TCP/IP host and domain name from the registry
Drops file in Windows directory
Enumerates connected drives
Creates a file in the Startup directory
Executes dropped EXE
Detects SectopRAT aka Arechclient2
Family: SectopRAT
Malware Family:
n/a
Verdict:
Malicious
Tags:
loader injector stealer evasion
YARA:
n/a
Malware family:
ArechClient2
Verdict:
Malicious
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:DetectEncryptedVariants
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:exploit_any_poppopret
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:FreddyBearDropper
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:MALWARE_Win_Arechclient2
Author:ditekSHen
Description:Detects Arechclient2 RAT
Rule name:NET
Author:malware-lu
Rule name:pe_no_import_table
Description:Detect pe file that no import table
Rule name:RANSOMWARE
Author:ToroGuitar
Rule name:SUSP_XORed_URL_In_EXE
Author:Florian Roth (Nextron Systems)
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:Sus_CMD_Powershell_Usage
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:telebot_framework
Author:vietdx.mb
Rule name:VECT_Ransomware
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.
Rule name:VIGIA_Arechclient2_b59b2bb0
Author:VIG-IA - Cognitive Threat Intelligence System for Smart Territories and Tourism Sector
Description:0ba15495-9325-4e88-9683-0583a3c2e273 - file 0551872127101f6f79321aaaeb1d24563a799ac8aba4236796396f20f23523cb.exe
Reference:https://vigia.bisite.es/
Rule name:Windows_Trojan_Arechclient2_b6ea1c83
Author:Elastic Security
Rule name:Windows_Trojan_RedLineStealer_15ee6903
Author:Elastic Security
Rule name:WIN_Malware_XWorm_ForgeAuto_6b06c990_Extrait
Author:Marjoriefort
Description:Detects XWorm (pe, etat extrait)
Rule name:win_redline_stealer_generic
Author:dubfib
Rule name:WIN_Sample_Unique_69354b41
Author:Marjoriefort
Description:Specimen unique (soumission Bazaar) - strings distinctifs propres au sample
Reference:69354b41e10daf03d3f3af881b32d5c0fec56b1cfe96629fd4c5263413a42854.exe

File information


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

Web download

Arechclient2

Microsoft Software Installer (MSI) msi a27568397d62fe4c514babc71eea5364b8a68c529d207ae7ca6b17fe16acc4cd

(this sample)

  
Dropped by
ACRStealer
  
Delivery method
Distributed via web download

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