Analysis
- max time kernel
116s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20220310-en - submitted
12/04/2022, 12:20
General
- Target Halkbank002.exe
- Size 735KB
- Sample220412-phrlvsbdan
- SHA256 31974a19ae09f65adfb2b422558e32e598bf9b84ab6a37c58ffe9be073f29b5f
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.privateemail.com
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Port
587
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Username
-
Password
Aliwenttoschool30
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.privateemail.com
-
Port
587
-
Username
-
Password
Aliwenttoschool30
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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 13 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank002.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank002.exe"1⤵
- Checks computer location settings
- 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\xyBtNlUwZKx.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\xyBtNlUwZKx" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB2FD.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Halkbank002.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank002.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
tmpB2FD.tmp
memory/2000-156-0x0000000006A40000-0x0000000006A90000-memory.dmp
memory/2000-146-0x0000000000400000-0x000000000043A000-memory.dmp
memory/3648-148-0x00000000052B0000-0x0000000005316000-memory.dmp
memory/3648-155-0x0000000007590000-0x00000000075AA000-memory.dmp
memory/3648-161-0x00000000078B0000-0x00000000078B8000-memory.dmp
memory/3648-142-0x0000000002900000-0x0000000002936000-memory.dmp
memory/3648-160-0x00000000078D0000-0x00000000078EA000-memory.dmp
memory/3648-144-0x0000000005560000-0x0000000005B88000-memory.dmp
memory/3648-159-0x00000000077C0000-0x00000000077CE000-memory.dmp
memory/3648-158-0x0000000007810000-0x00000000078A6000-memory.dmp
memory/3648-147-0x0000000005210000-0x0000000005232000-memory.dmp
memory/3648-157-0x0000000007600000-0x000000000760A000-memory.dmp
memory/3648-149-0x0000000006280000-0x000000000629E000-memory.dmp
memory/3648-150-0x0000000004F25000-0x0000000004F27000-memory.dmp
memory/3648-151-0x0000000007250000-0x0000000007282000-memory.dmp
memory/3648-152-0x0000000070D70000-0x0000000070DBC000-memory.dmp
memory/3648-153-0x0000000006850000-0x000000000686E000-memory.dmp
memory/3648-154-0x0000000007BD0000-0x000000000824A000-memory.dmp
memory/5048-135-0x0000000005330000-0x00000000058D4000-memory.dmp
memory/5048-134-0x0000000000380000-0x000000000043E000-memory.dmp
memory/5048-136-0x0000000004E20000-0x0000000004EB2000-memory.dmp
memory/5048-137-0x0000000004DF0000-0x0000000004DFA000-memory.dmp
memory/5048-138-0x0000000008C30000-0x0000000008CCC000-memory.dmp
memory/5048-139-0x0000000000D30000-0x0000000000D96000-memory.dmp