Analysis
- max time kernel
138s - max time network
125s - platform
windows10_x64 - resource
win10-en-20211014 - submitted
10/11/2021, 15:09
General
- Target SKM_B3350191107102300.exe
- Size 403KB
- Sample211110-sjfsjaedgr
- SHA256 d4727fdf3bd0f0672ff3d689ca9376e0ce682a286556d7bace16be4b9cfb8b33
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.mus.com.pk
-
Port
587
-
Username
-
Password
Lahore786
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- Drops file in Drivers directory 1 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 1 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.
- 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 10 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SKM_B3350191107102300.exe"C:\Users\Admin\AppData\Local\Temp\SKM_B3350191107102300.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vtuatpNjwq.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vtuatpNjwq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7904.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\SKM_B3350191107102300.exe"C:\Users\Admin\AppData\Local\Temp\SKM_B3350191107102300.exe"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- 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/1100-131-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1100-140-0x00000000051D0000-0x00000000056CE000-memory.dmp
memory/1100-388-0x00000000051D0000-0x00000000056CE000-memory.dmp
memory/2828-122-0x0000000007880000-0x0000000007881000-memory.dmp
memory/2828-123-0x0000000007A20000-0x0000000007A73000-memory.dmp
memory/2828-121-0x0000000007550000-0x0000000007557000-memory.dmp
memory/2828-115-0x0000000000850000-0x0000000000851000-memory.dmp
memory/2828-120-0x0000000002CA0000-0x0000000002CA1000-memory.dmp
memory/2828-119-0x00000000051D0000-0x00000000056CE000-memory.dmp
memory/2828-118-0x00000000051D0000-0x00000000051D1000-memory.dmp
memory/2828-117-0x00000000056D0000-0x00000000056D1000-memory.dmp
memory/3400-147-0x0000000008820000-0x0000000008821000-memory.dmp
memory/3400-145-0x0000000008040000-0x0000000008041000-memory.dmp
memory/3400-128-0x0000000004D00000-0x0000000004D01000-memory.dmp
memory/3400-127-0x0000000004BE0000-0x0000000004BE1000-memory.dmp
memory/3400-139-0x0000000004C52000-0x0000000004C53000-memory.dmp
memory/3400-138-0x0000000004C50000-0x0000000004C51000-memory.dmp
memory/3400-126-0x0000000004BE0000-0x0000000004BE1000-memory.dmp
memory/3400-141-0x0000000007780000-0x0000000007781000-memory.dmp
memory/3400-142-0x0000000008060000-0x0000000008061000-memory.dmp
memory/3400-143-0x0000000007820000-0x0000000007821000-memory.dmp
memory/3400-144-0x00000000080D0000-0x00000000080D1000-memory.dmp
memory/3400-130-0x00000000078C0000-0x00000000078C1000-memory.dmp
memory/3400-146-0x00000000089C0000-0x00000000089C1000-memory.dmp
memory/3400-148-0x0000000004BE0000-0x0000000004BE1000-memory.dmp
memory/3400-155-0x00000000097F0000-0x0000000009823000-memory.dmp
memory/3400-157-0x000000007F210000-0x000000007F211000-memory.dmp
memory/3400-163-0x00000000097B0000-0x00000000097B1000-memory.dmp
memory/3400-168-0x0000000009920000-0x0000000009921000-memory.dmp
memory/3400-169-0x0000000009AF0000-0x0000000009AF1000-memory.dmp
memory/3400-238-0x0000000004C53000-0x0000000004C54000-memory.dmp