General
- Target AsyncClient.exe
- Size 163KB
- Sample260724-r7thvs1vex
- SHA256 de0997525b3e663ff163ccf8d99b3c9b1f9f98581eb18ba153ba1cfd89d11bbd
- MD5 dff769dfa86f47bd2cdec2e72a567ee4
- SHA1 417c178e998fb50c4ad9262e3938ff6b1d46f77f
- SHA512 ac13d8ae7c671df66cf8d6cc9ff03d8b57ddb49d5c545e794b03e216975bb6c3bd147094803b5eff719d2fa50f3c25066ee8ecc883ff4b6a3fe9b04517f80c56
- SSDEEP 3072:RuGwTHbF1m2V9EYwDbKoJla3v7EskT8rmtIhvx:RuGWF1TVxwDbRC/HkTftOZ
- TLSH T1ABF3104762380C21EBB4EE39A1DCD8BB495F6E7AB1A2464C7CB5FC5414F6DF1092AC06
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
AsyncClient.exe
Resource
win10v2004-20260513-en
Malware Config
Extracted
-
asyncrat
-
0.5.8
-
Default
-
5.tcp.eu.ngrok.io:6606
-
5.tcp.eu.ngrok.io:7707
-
5.tcp.eu.ngrok.io:8808
-
5.tcp.eu.ngrok.io:4444
-
5.tcp.eu.ngrok.io:11798
-
cyMjqnl9DJTq
-
delay
3
-
install
true
-
install_file
Async.exe
-
install_folder
%AppData%
-
local_host
127.0.0.1
Targets
-
- Target AsyncClient.exe
- Size 163KB
- SHA256 de0997525b3e663ff163ccf8d99b3c9b1f9f98581eb18ba153ba1cfd89d11bbd
- MD5 dff769dfa86f47bd2cdec2e72a567ee4
- SHA1 417c178e998fb50c4ad9262e3938ff6b1d46f77f
- SHA512 ac13d8ae7c671df66cf8d6cc9ff03d8b57ddb49d5c545e794b03e216975bb6c3bd147094803b5eff719d2fa50f3c25066ee8ecc883ff4b6a3fe9b04517f80c56
- SSDEEP 3072:RuGwTHbF1m2V9EYwDbKoJla3v7EskT8rmtIhvx:RuGWF1TVxwDbRC/HkTftOZ
- TLSH T1ABF3104762380C21EBB4EE39A1DCD8BB495F6E7AB1A2464C7CB5FC5414F6DF1092AC06
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Async RAT payload
-
Looks for VirtualBox drivers on disk
-
Disables one or more Microsoft Defender components
Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.
-
Looks for VMWare drivers on disk
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Executes dropped EXE
-
Loads dropped DLL
-
Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
-
Drops desktop.ini file(s)
-
Sets desktop wallpaper using registry
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Hide Artifacts
1Ignore Process Interrupts
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
1Virtualization/Sandbox Evasion
2Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1