Analysis
- max time kernel
142s - max time network
121s - platform
windows7_x64 - resource
win7-en-20211104 - 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
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Port
587
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Username
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Password
Lahore786
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 5 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 9 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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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
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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
-
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vtuatpNjwq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp698C.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\SKM_B3350191107102300.exe"C:\Users\Admin\AppData\Local\Temp\SKM_B3350191107102300.exe"2⤵
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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
Loading Replay Monitor...
Downloads
memory/652-57-0x0000000075D61000-0x0000000075D63000-memory.dmp
memory/652-58-0x00000000004D0000-0x00000000004D7000-memory.dmp
memory/652-59-0x00000000047C0000-0x00000000047C1000-memory.dmp
memory/652-60-0x0000000004F80000-0x0000000004FD3000-memory.dmp
memory/652-55-0x0000000000080000-0x0000000000081000-memory.dmp
memory/1744-72-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1744-65-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1744-66-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1744-67-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1744-68-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1744-69-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1744-74-0x00000000044F0000-0x00000000044F1000-memory.dmp
memory/1744-77-0x00000000044F1000-0x00000000044F2000-memory.dmp
memory/1852-70-0x0000000002370000-0x0000000002FBA000-memory.dmp
memory/1852-75-0x0000000002370000-0x0000000002FBA000-memory.dmp
memory/1852-76-0x0000000002370000-0x0000000002FBA000-memory.dmp