Analysis
- max time kernel
107s - max time network
125s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
05/05/2022, 16:31
General
- Target SecuriteInfo.com.Trojan.DownloaderNET.375.8931.exe
- Size 21KB
- Sample220505-t1cymsbafp
- SHA256 37e3a3e4a0b161fbfd16602bb993ceeb34a7f25f2fc6d36459cc35afbff92363
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot5250591642:AAFCsHC68T8VP-UXonoTnVp9mgZl_BSn8kw/sendDocument
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.
- 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.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownloaderNET.375.8931.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownloaderNET.375.8931.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\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout 202⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 203⤵
- Delays execution with timeout.exe
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe2⤵
- 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
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Downloads
memory/2304-138-0x0000000000400000-0x000000000043A000-memory.dmp
memory/2304-139-0x0000000004FD0000-0x000000000506C000-memory.dmp
memory/2304-140-0x0000000005DE0000-0x0000000005E46000-memory.dmp
memory/2304-141-0x0000000006370000-0x00000000063C0000-memory.dmp
memory/4236-130-0x0000000000960000-0x000000000096A000-memory.dmp
memory/4236-131-0x00000000058E0000-0x0000000005E84000-memory.dmp
memory/4236-132-0x0000000005330000-0x00000000053C2000-memory.dmp
memory/4236-133-0x0000000005300000-0x000000000530A000-memory.dmp