Analysis
- max time kernel
81s - max time network
85s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
15/04/2022, 11:13
General
- Target 05ac1021e73f9b5375fdb6f124b11c49.exe
- Size 796KB
- Sample220415-nbd7hsghen
- SHA256 5e1e2ce82b5fbcf65e9b5253453f4288dc8510fb30451f7f06258d7753bee9b0
Malware Config
Extracted
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
xCVTAJh7
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
xCVTAJh7
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- 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 6 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\05ac1021e73f9b5375fdb6f124b11c49.exe"C:\Users\Admin\AppData\Local\Temp\05ac1021e73f9b5375fdb6f124b11c49.exe"1⤵
- Checks computer location settings
- 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\Roaming\UpSaPxecx.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UpSaPxecx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1ACB.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\05ac1021e73f9b5375fdb6f124b11c49.exe"C:\Users\Admin\AppData\Local\Temp\05ac1021e73f9b5375fdb6f124b11c49.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
tmp1ACB.tmp
memory/1396-131-0x0000000006090000-0x0000000006634000-memory.dmp
memory/1396-132-0x0000000005A00000-0x0000000005A92000-memory.dmp
memory/1396-133-0x0000000005B80000-0x0000000005C1C000-memory.dmp
memory/1396-134-0x0000000005AB0000-0x0000000005ABA000-memory.dmp
memory/1396-135-0x0000000009C40000-0x0000000009CA6000-memory.dmp
memory/1396-130-0x0000000000F90000-0x000000000105C000-memory.dmp
memory/3900-151-0x0000000006E00000-0x0000000006E1A000-memory.dmp
memory/3900-148-0x0000000070DF0000-0x0000000070E3C000-memory.dmp
memory/3900-157-0x0000000004840000-0x0000000004848000-memory.dmp
memory/3900-140-0x0000000004BB0000-0x00000000051D8000-memory.dmp
memory/3900-156-0x0000000004850000-0x000000000486A000-memory.dmp
memory/3900-155-0x0000000007040000-0x000000000704E000-memory.dmp
memory/3900-143-0x0000000004B40000-0x0000000004B62000-memory.dmp
memory/3900-144-0x0000000005350000-0x00000000053B6000-memory.dmp
memory/3900-145-0x0000000005B00000-0x0000000005B1E000-memory.dmp
memory/3900-146-0x00000000021A5000-0x00000000021A7000-memory.dmp
memory/3900-147-0x0000000006AD0000-0x0000000006B02000-memory.dmp
memory/3900-138-0x00000000021F0000-0x0000000002226000-memory.dmp
memory/3900-149-0x0000000006050000-0x000000000606E000-memory.dmp
memory/3900-150-0x0000000007440000-0x0000000007ABA000-memory.dmp
memory/3900-152-0x0000000006E70000-0x0000000006E7A000-memory.dmp
memory/3900-154-0x00000000070A0000-0x0000000007136000-memory.dmp
memory/4916-153-0x00000000065E0000-0x0000000006630000-memory.dmp
memory/4916-142-0x0000000000400000-0x0000000000462000-memory.dmp