Analysis
- max time kernel
71s - max time network
79s - platform
windows10-2004_x64 - resource
win10v2004-20220331-en - submitted
02/04/2022, 14:18
General
- Target documents.exe
- Size 570KB
- Sample220402-rl9mysehd2
- SHA256 997777103beb79d540fe2d758c2183107f3468889f9bc1d96bfd08db19dbb9c8
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.atifnazar.com
-
Port
587
-
Username
-
Password
anazar@^@***@
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.atifnazar.com
-
Port
587
-
Username
-
Password
anazar@^@***@
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Drops file in Drivers directory 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 1 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 7 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\documents.exe"C:\Users\Admin\AppData\Local\Temp\documents.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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\WBwAEJa.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\WBwAEJa" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4B32.tmp"2⤵
- Creates scheduled task(s)
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-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- 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
tmp4B32.tmp
memory/2268-125-0x0000000005440000-0x00000000059E4000-memory.dmp
memory/2268-126-0x0000000004CA0000-0x0000000004D32000-memory.dmp
memory/2268-127-0x0000000005030000-0x00000000050CC000-memory.dmp
memory/2268-128-0x0000000005B50000-0x0000000005BB6000-memory.dmp
memory/2268-124-0x0000000000080000-0x0000000000114000-memory.dmp
memory/3360-138-0x0000000005CD0000-0x0000000005CEE000-memory.dmp
memory/3360-142-0x00000000062A0000-0x00000000062BE000-memory.dmp
memory/3360-133-0x0000000004F00000-0x0000000005528000-memory.dmp
memory/3360-150-0x0000000007300000-0x0000000007308000-memory.dmp
memory/3360-149-0x0000000007320000-0x000000000733A000-memory.dmp
memory/3360-136-0x0000000005560000-0x0000000005582000-memory.dmp
memory/3360-137-0x0000000005600000-0x0000000005666000-memory.dmp
memory/3360-139-0x00000000048C5000-0x00000000048C7000-memory.dmp
memory/3360-140-0x00000000062C0000-0x00000000062F2000-memory.dmp
memory/3360-141-0x00000000708C0000-0x000000007090C000-memory.dmp
memory/3360-131-0x0000000004720000-0x0000000004756000-memory.dmp
memory/3360-143-0x0000000007620000-0x0000000007C9A000-memory.dmp
memory/3360-144-0x0000000006FE0000-0x0000000006FFA000-memory.dmp
memory/3360-148-0x0000000007210000-0x000000000721E000-memory.dmp
memory/3360-146-0x0000000007050000-0x000000000705A000-memory.dmp
memory/3360-147-0x0000000007260000-0x00000000072F6000-memory.dmp
memory/4576-145-0x00000000069B0000-0x0000000006A00000-memory.dmp
memory/4576-135-0x0000000000400000-0x000000000043A000-memory.dmp
memory/4576-151-0x0000000006B90000-0x0000000006B9A000-memory.dmp