Analysis
- max time kernel
93s - max time network
112s - platform
windows10_x64 - resource
win10v200722 - submitted
31/08/2020, 05:43
General
- Target KINDLY FIND ATTACH RECEIPT FOR THE PREVIOUS TRANSACTION..exe
- Size 851KB
- Sample200831-fen8f4416s
- SHA256 56839b17d875d76878a594fafa8e4ea0a8185391d43c6fcac8d500eb7baf6ebe
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.caterdevice.com
-
Port
587
-
Username
-
Password
dhh114
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- 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
- Drops file in Windows directory 1 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies data under HKEY_USERS 5 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\KINDLY FIND ATTACH RECEIPT FOR THE PREVIOUS TRANSACTION..exe"C:\Users\Admin\AppData\Local\Temp\KINDLY FIND ATTACH RECEIPT FOR THE PREVIOUS TRANSACTION..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\QtvZUgGOy" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC6A1.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\KINDLY FIND ATTACH RECEIPT FOR THE PREVIOUS TRANSACTION..exe"{path}"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\KINDLY FIND ATTACH RECEIPT FOR THE PREVIOUS TRANSACTION..exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3108-21-0x0000000006040000-0x0000000006041000-memory.dmp
memory/3108-20-0x00000000054C0000-0x00000000054C1000-memory.dmp
memory/3108-15-0x0000000073460000-0x0000000073B4E000-memory.dmp
memory/3108-12-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4048-5-0x0000000005070000-0x0000000005071000-memory.dmp
memory/4048-9-0x00000000085A0000-0x0000000008635000-memory.dmp
memory/4048-8-0x0000000008890000-0x0000000008891000-memory.dmp
memory/4048-7-0x0000000008740000-0x00000000087E5000-memory.dmp
memory/4048-6-0x0000000005320000-0x0000000005323000-memory.dmp
memory/4048-0-0x0000000073460000-0x0000000073B4E000-memory.dmp
memory/4048-4-0x0000000005100000-0x0000000005101000-memory.dmp
memory/4048-3-0x00000000056D0000-0x00000000056D1000-memory.dmp
memory/4048-1-0x0000000000770000-0x0000000000771000-memory.dmp