Analysis
- max time kernel
112s - max time network
133s - platform
windows10-2004_x64 - resource
win10v2004-20220310-en - submitted
23/03/2022, 20:13
General
- Target bc4f8c2ac66785a664235032398e98f2.exe
- Size 1023KB
- Sample220323-yzf15afbbp
- SHA256 0779f406c167b2712d14e2ebb01de5661d7daaefcdc1d60ee8f37d2270901ee3
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
wenszsrzwtsbhscx
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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 13 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\bc4f8c2ac66785a664235032398e98f2.exe"C:\Users\Admin\AppData\Local\Temp\bc4f8c2ac66785a664235032398e98f2.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\RxCpkwcacEIKeY.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RxCpkwcacEIKeY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp36E7.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\bc4f8c2ac66785a664235032398e98f2.exe"C:\Users\Admin\AppData\Local\Temp\bc4f8c2ac66785a664235032398e98f2.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1148-144-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1404-135-0x0000000005E40000-0x00000000063E4000-memory.dmp
memory/1404-136-0x0000000005750000-0x00000000057E2000-memory.dmp
memory/1404-137-0x0000000005800000-0x000000000580A000-memory.dmp
memory/1404-138-0x0000000009380000-0x000000000941C000-memory.dmp
memory/1404-134-0x0000000000CB0000-0x0000000000DB4000-memory.dmp
memory/4228-146-0x0000000005290000-0x00000000052B2000-memory.dmp
memory/4228-152-0x00000000711A0000-0x00000000711EC000-memory.dmp
memory/4228-145-0x0000000005550000-0x0000000005B78000-memory.dmp
memory/4228-147-0x0000000005BF0000-0x0000000005C56000-memory.dmp
memory/4228-148-0x0000000005D90000-0x0000000005DF6000-memory.dmp
memory/4228-149-0x0000000006260000-0x000000000627E000-memory.dmp
memory/4228-150-0x0000000004F15000-0x0000000004F17000-memory.dmp
memory/4228-151-0x0000000006920000-0x0000000006952000-memory.dmp
memory/4228-142-0x0000000004D80000-0x0000000004DB6000-memory.dmp
memory/4228-153-0x0000000006900000-0x000000000691E000-memory.dmp
memory/4228-154-0x0000000007CB0000-0x000000000832A000-memory.dmp
memory/4228-155-0x0000000007670000-0x000000000768A000-memory.dmp
memory/4228-156-0x00000000076E0000-0x00000000076EA000-memory.dmp
memory/4228-157-0x00000000078E0000-0x0000000007976000-memory.dmp
memory/4228-158-0x00000000079C0000-0x00000000079CE000-memory.dmp
memory/4228-159-0x0000000007A20000-0x0000000007A3A000-memory.dmp
memory/4228-160-0x0000000007A10000-0x0000000007A18000-memory.dmp