Analysis
- max time kernel
72s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
01/11/2022, 07:31
General
- Target 6309892372039126138.exe
- Size 730KB
- Sample221101-jcc9dshch3
- SHA256 e243d0a700da6bff5f3e2d6c2394b569d1c3bbcfbda8c78893cee08f40536e9a
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot5409839916:AAEYUYZy0IhJQAm4VXi620si4okGW8FDL2w/
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
- Looks for VMWare Tools registry key 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 20 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\6309892372039126138.exe"C:\Users\Admin\AppData\Local\Temp\6309892372039126138.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\6309892372039126138.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ALNUizgQ.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ALNUizgQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp442D.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\6309892372039126138.exe"C:\Users\Admin\AppData\Local\Temp\6309892372039126138.exe"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\6309892372039126138.exe"C:\Users\Admin\AppData\Local\Temp\6309892372039126138.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
tmp442D.tmp
memory/384-148-0x0000000000400000-0x000000000043A000-memory.dmp
memory/384-161-0x0000000006760000-0x00000000067B0000-memory.dmp
memory/764-132-0x0000000000E60000-0x0000000000F1C000-memory.dmp
memory/764-138-0x0000000008FB0000-0x0000000009016000-memory.dmp
memory/764-136-0x0000000008550000-0x00000000085EC000-memory.dmp
memory/764-135-0x0000000005890000-0x000000000589A000-memory.dmp
memory/764-134-0x00000000058D0000-0x0000000005962000-memory.dmp
memory/764-133-0x0000000005E80000-0x0000000006424000-memory.dmp
memory/2032-151-0x0000000070D50000-0x0000000070D9C000-memory.dmp
memory/2032-155-0x0000000007020000-0x000000000703A000-memory.dmp
memory/2032-152-0x0000000006280000-0x000000000629E000-memory.dmp
memory/3532-140-0x00000000054E0000-0x0000000005B08000-memory.dmp
memory/3532-156-0x00000000077C0000-0x00000000077CA000-memory.dmp
memory/3532-149-0x0000000006440000-0x000000000645E000-memory.dmp
memory/3532-153-0x0000000070D50000-0x0000000070D9C000-memory.dmp
memory/3532-154-0x0000000007D90000-0x000000000840A000-memory.dmp
memory/3532-144-0x0000000005D80000-0x0000000005DE6000-memory.dmp
memory/3532-150-0x00000000075F0000-0x0000000007622000-memory.dmp
memory/3532-157-0x00000000079D0000-0x0000000007A66000-memory.dmp
memory/3532-158-0x0000000007980000-0x000000000798E000-memory.dmp
memory/3532-159-0x0000000007A90000-0x0000000007AAA000-memory.dmp
memory/3532-160-0x0000000007A70000-0x0000000007A78000-memory.dmp
memory/3532-143-0x0000000005480000-0x00000000054A2000-memory.dmp
memory/3532-139-0x0000000004E70000-0x0000000004EA6000-memory.dmp