Analysis
- max time kernel
138s - max time network
104s - platform
windows7_x64 - resource
win7v20210408 - submitted
23/09/2021, 04:35
General
- Target IT01879020517_xiyCu.xml.p7m.pdf.exe
- Size 804KB
- Sample210923-e7n7xsedg9
- SHA256 bdca1fe0e8d4f8138fa99475d2986e95cda843ff5536413bb5c1f16fae82fccb
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
mail.rapidmail.ec
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Port
587
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Username
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Password
icui4cu2@@
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\IT01879020517_xiyCu.xml.p7m.pdf.exe"C:\Users\Admin\AppData\Local\Temp\IT01879020517_xiyCu.xml.p7m.pdf.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\LbrzSrnPwNOxcy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1FB0.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\IT01879020517_xiyCu.xml.p7m.pdf.exe"C:\Users\Admin\AppData\Local\Temp\IT01879020517_xiyCu.xml.p7m.pdf.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\IT01879020517_xiyCu.xml.p7m.pdf.exe"C:\Users\Admin\AppData\Local\Temp\IT01879020517_xiyCu.xml.p7m.pdf.exe"2⤵
- 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/736-60-0x00000000001A0000-0x00000000001A1000-memory.dmp
memory/736-62-0x0000000004DD0000-0x0000000004DD1000-memory.dmp
memory/736-63-0x0000000000610000-0x000000000062D000-memory.dmp
memory/736-64-0x00000000052E0000-0x0000000005356000-memory.dmp
memory/736-65-0x00000000024B0000-0x00000000024F8000-memory.dmp
memory/1632-67-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1632-69-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1632-71-0x0000000004C60000-0x0000000004C61000-memory.dmp