Analysis
- max time kernel
71s - max time network
21s - platform
windows7_x64 - resource
win7 - submitted
31/08/2020, 12:57
General
- Target LIST0117398902791PDF.7z.exe
- Size 551KB
- Sample200831-mrr26rcva2
- SHA256 d4eec3387fde66fc5b45135db86b9fcdebcb75e199fe9be1a834d89cac6b9d13
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
chi-node26.websitehostserver.net
-
Port
587
-
Username
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Password
@LENOVO,/+473
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 IoCs
- 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.
- 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\LIST0117398902791PDF.7z.exe"C:\Users\Admin\AppData\Local\Temp\LIST0117398902791PDF.7z.exe"1⤵
- 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\KDkOUcjBffk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp93E6.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\LIST0117398902791PDF.7z.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1124-0-0x0000000073F00000-0x00000000745EE000-memory.dmp
memory/1124-1-0x0000000000B70000-0x0000000000B71000-memory.dmp
memory/1124-3-0x00000000004E0000-0x00000000004E3000-memory.dmp
memory/1124-4-0x00000000050B0000-0x0000000005123000-memory.dmp
memory/1124-5-0x0000000005410000-0x000000000548E000-memory.dmp
memory/1960-11-0x0000000000400000-0x0000000000466000-memory.dmp
memory/1960-13-0x0000000000400000-0x0000000000466000-memory.dmp
memory/1960-14-0x0000000000400000-0x0000000000466000-memory.dmp
memory/1960-17-0x0000000073F00000-0x00000000745EE000-memory.dmp