Analysis
- max time kernel
124s - max time network
114s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:33
General
- Target PhytoAB - Attached #PO 00620.exe
- Size 659KB
- Sample201109-yd45psgs1a
- SHA256 960bdf7b7b3bd263fcd5aa32f4b0ddb567349d46f6d5062a8000981675bffe6f
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.braziliancoffeehouse.co
-
Port
587
-
Username
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Password
Brazil@123.
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- 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 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PhytoAB - Attached #PO 00620.exe"C:\Users\Admin\AppData\Local\Temp\PhytoAB - Attached #PO 00620.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\KJDujewGEbktb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp181D.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\PhytoAB - Attached #PO 00620.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2128-20-0x0000000005B40000-0x0000000005B41000-memory.dmp
memory/2128-19-0x0000000004EA0000-0x0000000004EA1000-memory.dmp
memory/2128-14-0x00000000738E0000-0x0000000073FCE000-memory.dmp
memory/2128-11-0x0000000000400000-0x000000000044C000-memory.dmp
memory/3992-0-0x00000000738E0000-0x0000000073FCE000-memory.dmp
memory/3992-8-0x0000000009D90000-0x0000000009D91000-memory.dmp
memory/3992-7-0x0000000004D90000-0x0000000004DDE000-memory.dmp
memory/3992-6-0x0000000005410000-0x0000000005412000-memory.dmp
memory/3992-5-0x0000000007CC0000-0x0000000007CC1000-memory.dmp
memory/3992-4-0x0000000007D00000-0x0000000007D01000-memory.dmp
memory/3992-3-0x0000000008120000-0x0000000008121000-memory.dmp
memory/3992-1-0x0000000000A80000-0x0000000000A81000-memory.dmp