MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 67e06616d44fceb4be1bbb147b3970d155405d89c64a63ec27c2687c7154216b. 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



AsyncRAT


Vendor detections: 15


Intelligence 15 IOCs YARA 8 File information Comments

SHA256 hash: 67e06616d44fceb4be1bbb147b3970d155405d89c64a63ec27c2687c7154216b
SHA3-384 hash: 0072f29fbabb00a10541493e4f41f6f0ebe28c82a81395769f30ae35cf172391fc02969a5f41c1af2210c55fd7adad25
SHA1 hash: ad90f2a25d9beb50b865295e9c0ad5fa330599f1
MD5 hash: 418823b6aab71bded232101366f62bb4
humanhash: black-utah-seven-north
File name:KL_lets.exe
Download: download sample
Signature AsyncRAT
File size:72'779'688 bytes
First seen:2025-08-22 23:42:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 40ab50289f7ef5fae60801f88d4541fc (59 x ValleyRAT, 49 x Gh0stRAT, 41 x OffLoader)
ssdeep 1572864:jVpWW9yfptVEhtKlzU//Ac2x8tO2ZLjtyGmCWJIjzVW2EAmxRM:r94itKlBc2xU/RtDs8E/W
Threatray 433 similar samples on MalwareBazaar
TLSH T10BF73326A2CFE53FF85D0F3306F365A494F3A2621531AD5B9AC844ACCF256241D6E70B
TrID 62.3% (.EXE) Inno Setup installer (107240/4/30)
24.1% (.EXE) Win32 EXE PECompact compressed (generic) (41569/9/9)
6.1% (.EXE) Win64 Executable (generic) (10522/11/4)
2.6% (.EXE) Win32 Executable (generic) (4504/4/1)
1.2% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
dhash icon c0c8d4cc64d4ccf8 (8 x ValleyRAT, 3 x AsyncRAT, 3 x Blackmoon)
Reporter aachum
Tags:AsyncRAT CHN exe


Avatar
iamaachum
https://www.kuaillan.com/ => https://www.kuaillan.com/KL_lets.zip

Intelligence


File Origin
# of uploads :
1
# of downloads :
103
Origin country :
ES ES
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
KL_lets.exe
Verdict:
Malicious activity
Analysis date:
2025-08-22 23:44:09 UTC
Tags:
auto-reg

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Tags:
dropper shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Searching for synchronization primitives
Restart of the analyzed sample
Creating a process with a hidden window
Creating a file
Moving a recently created file
Creating a file in the %AppData% directory
Moving a file to the %AppData% directory
Running batch commands
Creating a file in the %AppData% subdirectories
Moving a file to the %AppData% subdirectory
Launching a process
Connection attempt
Using the Windows Management Instrumentation requests
Setting a global event handler for the keyboard
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embarcadero_delphi fingerprint installer invalid-signature obfuscated overlay packed packed packer_detected signed threat
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-08-20T21:34:00Z UTC
Last seen:
2025-08-20T21:34:00Z UTC
Hits:
~10
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.spyw.evad
Score:
56 / 100
Signature
Accesses sensitive object manager directories (likely to detect virtual machines)
Bypasses PowerShell execution policy
Changes security center settings (notifications, updates, antivirus, firewall)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Modifies the DNS server
Modifies the windows firewall
Multi AV Scanner detection for submitted file
Performs a network lookup / discovery via ARP
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Sample is not signed and drops a device driver
Uses ipconfig to lookup or modify the Windows network settings
Uses netsh to modify the Windows network and firewall settings
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1763303 Sample: KL_lets.exe Startdate: 23/08/2025 Architecture: WINDOWS Score: 56 158 yandex.com 2->158 160 www.yandex.com 2->160 162 9 other IPs or domains 2->162 174 Malicious sample detected (through community Yara rule) 2->174 176 Multi AV Scanner detection for submitted file 2->176 178 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 2->178 180 5 other signatures 2->180 15 KL_lets.exe 2 2->15         started        18 svchost.exe 2->18         started        20 svchost.exe 2->20         started        23 7 other processes 2->23 signatures3 process4 file5 156 C:\Users\user\AppData\Local\...\KL_lets.tmp, PE32 15->156 dropped 25 KL_lets.tmp 3 4 15->25         started        28 drvinst.exe 18->28         started        31 drvinst.exe 18->31         started        182 Changes security center settings (notifications, updates, antivirus, firewall) 20->182 33 MpCmdRun.exe 20->33         started        184 Modifies the DNS server 23->184 35 WerFault.exe 23->35         started        37 WerFault.exe 23->37         started        signatures6 process7 file8 138 C:\Users\user\AppData\Local\...\_setup64.tmp, PE32+ 25->138 dropped 39 KL_lets.exe 2 25->39         started        140 C:\Windows\System32\...\tap0901.sys (copy), PE32+ 28->140 dropped 142 C:\Windows\System32\drivers\SET1E6D.tmp, PE32+ 28->142 dropped 188 Accesses sensitive object manager directories (likely to detect virtual machines) 28->188 144 C:\Windows\System32\...\tap0901.sys (copy), PE32+ 31->144 dropped 146 C:\Windows\System32\...\SET1596.tmp, PE32+ 31->146 dropped 42 conhost.exe 33->42         started        signatures9 process10 file11 128 C:\Users\user\AppData\Local\...\KL_lets.tmp, PE32 39->128 dropped 44 KL_lets.tmp 24 8 39->44         started        process12 file13 148 C:\Users\user\AppData\...\OrnD .exe (copy), PE32 44->148 dropped 150 C:\Users\user\AppData\Roaming\is-LBGFK.tmp, PE32 44->150 dropped 152 C:\Users\user\AppData\Roaming\is-J6NAR.tmp, PE32 44->152 dropped 154 4 other files (none is malicious) 44->154 dropped 47 cmd.exe 1 44->47         started        50 cmd.exe 1 44->50         started        52 conhost.exe 44->52         started        process14 signatures15 192 Uses netsh to modify the Windows network and firewall settings 47->192 194 Uses ipconfig to lookup or modify the Windows network settings 47->194 196 Performs a network lookup / discovery via ARP 47->196 54 OrnD .exe 10 302 47->54         started        58 conhost.exe 47->58         started        60 Epcs  .exe 2 50->60         started        62 conhost.exe 50->62         started        process16 file17 118 C:\Program Files (x86)\...\tap0901.sys, PE32+ 54->118 dropped 120 C:\Program Files (x86)\...\LetsPRO.exe, PE32 54->120 dropped 122 C:\Program Files (x86)\...\LetsPRO.exe.config, XML 54->122 dropped 126 221 other files (1 malicious) 54->126 dropped 186 Sample is not signed and drops a device driver 54->186 64 LetsPRO.exe 54->64         started        66 powershell.exe 54->66         started        69 tapinstall.exe 54->69         started        74 8 other processes 54->74 124 C:\Users\user\AppData\Local\...pcs  .tmp, PE32 60->124 dropped 72 Epcs  .tmp 3 4 60->72         started        signatures18 process19 file20 76 LetsPRO.exe 64->76         started        172 Loading BitLocker PowerShell Module 66->172 80 conhost.exe 66->80         started        112 C:\Users\user\AppData\...\tap0901.sys (copy), PE32+ 69->112 dropped 114 C:\Users\user\AppData\Local\...\SET1392.tmp, PE32+ 69->114 dropped 82 conhost.exe 69->82         started        116 C:\Users\user\AppData\Local\...\_setup64.tmp, PE32+ 72->116 dropped 84 Epcs  .exe 72->84         started        87 conhost.exe 74->87         started        89 conhost.exe 74->89         started        91 netsh.exe 74->91         started        93 9 other processes 74->93 signatures21 process22 dnsIp23 166 yandex.com 77.88.44.55, 443, 49712 YANDEXRU Russian Federation 76->166 168 119.29.29.29, 49709, 53 TENCENT-NET-AP-CNTencentBuildingKejizhongyiAvenueCN China 76->168 170 13 other IPs or domains 76->170 190 Loading BitLocker PowerShell Module 76->190 95 cmd.exe 76->95         started        98 WMIC.exe 76->98         started        100 cmd.exe 76->100         started        102 cmd.exe 76->102         started        110 C:\Users\user\AppData\Local\...pcs  .tmp, PE32 84->110 dropped 104 Epcs  .tmp 84->104         started        file24 signatures25 process26 file27 198 Performs a network lookup / discovery via ARP 95->198 200 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 98->200 130 C:\Users\user\AppData\...\libcef.dll (copy), PE32 104->130 dropped 132 C:\Users\user\AppData\...\is-S2MMP.tmp, PE32 104->132 dropped 134 C:\Users\user\AppData\...\is-5D69L.tmp, PE32 104->134 dropped 136 6 other files (none is malicious) 104->136 dropped 107 LookMyPC.exe 104->107         started        signatures28 process29 dnsIp30 164 154.193.247.162, 56003 IKGUL-26484US Seychelles 107->164
Gathering data
Threat name:
Win32.Trojan.Generic
Status:
Suspicious
First seen:
2025-08-22 23:47:00 UTC
File Type:
PE (Exe)
Extracted files:
1131
AV detection:
10 of 38 (26.32%)
Threat level:
  5/5
Result
Malware family:
asyncrat
Score:
  10/10
Tags:
family:asyncrat defense_evasion discovery execution persistence privilege_escalation rat spyware trojan
Behaviour
Checks SCSI registry key(s)
Gathers network information
Modifies data under HKEY_USERS
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Adds Run key to start application
Checks installed software on the system
Network Service Discovery
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Unexpected DNS network traffic destination
Drops file in Drivers directory
Modifies Windows Firewall
Modifies trusted root certificate store through registry
Async RAT payload
AsyncRat
Asyncrat family
Malware family:
DonutLoader
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:Borland
Author:malware-lu
Rule name:botnet_plaintext_c2
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
Rule name:CP_AllMal_Detector
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:CP_Script_Inject_Detector
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:pe_detect_tls_callbacks
Rule name:PE_Digital_Certificate
Author:albertzsigovits
Rule name:shellcode
Author:nex
Description:Matched shellcode byte patterns
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information


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

Web download

AsyncRAT

Executable exe 67e06616d44fceb4be1bbb147b3970d155405d89c64a63ec27c2687c7154216b

(this sample)

  
Delivery method
Distributed via web download

Comments