Analysis
- max time kernel
139s - max time network
131s - platform
windows10_x64 - resource
win10v20201028 - submitted
16/03/2021, 13:10
General
- Target Purchase order.doc
- Size 69KB
- Sample210316-exd4xy2rr6
- SHA256 d60076d9ebcd69f0403422ebb01bf2df5faa59ce3fe2596b76ba0868ec666549
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
mail.privateemail.com
-
Port
587
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Username
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Password
ruben000
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Executes dropped EXE 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.
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Suspicious behavior: AddClipboardFormatListener 2 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 7 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Purchase order.doc" /o ""1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Server.gifC:\Users\Admin\AppData\Local\Temp\Server.gif2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OokNvg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6628.tmp"3⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Server.gif"C:\Users\Admin\AppData\Local\Temp\Server.gif"3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Temp\Server.gif"C:\Users\Admin\AppData\Local\Temp\Server.gif"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/832-7-0x00007FFAC7350000-0x00007FFAC7360000-memory.dmp
memory/832-3-0x00007FFACA7F0000-0x00007FFACA800000-memory.dmp
memory/832-2-0x00007FFACA7F0000-0x00007FFACA800000-memory.dmp
memory/832-6-0x00007FFAEA7F0000-0x00007FFAEAE27000-memory.dmp
memory/832-4-0x00007FFACA7F0000-0x00007FFACA800000-memory.dmp
memory/832-5-0x00007FFACA7F0000-0x00007FFACA800000-memory.dmp
memory/2100-20-0x0000000000A90000-0x0000000000A9B000-memory.dmp
memory/2100-12-0x0000000000030000-0x0000000000031000-memory.dmp
memory/2100-17-0x0000000006E20000-0x0000000006E21000-memory.dmp
memory/2100-18-0x0000000006F20000-0x0000000006F21000-memory.dmp
memory/2100-19-0x0000000007030000-0x0000000007031000-memory.dmp
memory/2100-15-0x00000000073F0000-0x00000000073F1000-memory.dmp
memory/2100-21-0x0000000004DB0000-0x0000000004E24000-memory.dmp
memory/2100-14-0x0000000006E50000-0x0000000006E51000-memory.dmp
memory/2100-16-0x0000000006F90000-0x0000000006F91000-memory.dmp
memory/2100-11-0x0000000073BB0000-0x000000007429E000-memory.dmp
memory/3928-25-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3928-29-0x0000000073BB0000-0x000000007429E000-memory.dmp
memory/3928-34-0x0000000005A80000-0x0000000005A81000-memory.dmp
memory/3928-35-0x0000000005DD0000-0x0000000005DD1000-memory.dmp
memory/3928-36-0x0000000006570000-0x0000000006571000-memory.dmp