Analysis
- max time kernel
117s - max time network
123s - platform
windows7_x64 - resource
win7-20231020-en - resource tags
- submitted
27/11/2023, 17:16
General
- Target Tracking#INV-IV1905-029.exe
- Size 681KB
- Sample231127-vs55wsaf73
- SHA256 1d2add4e6e6f86f45aa1a4b75c32e4efbf43bc117cc5b3a3927b4e548cf2732c
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
www.premier-bkk.com
-
Port
587
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Username
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Password
R2USmt6P
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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.
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Tracking#INV-IV1905-029.exe"C:\Users\Admin\AppData\Local\Temp\Tracking#INV-IV1905-029.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\rKfsquLB.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\rKfsquLB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB0C9.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Tracking#INV-IV1905-029.exe"C:\Users\Admin\AppData\Local\Temp\Tracking#INV-IV1905-029.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
tmpB0C9.tmp
memory/1736-30-0x000000006F3F0000-0x000000006F99B000-memory.dmp
memory/1736-31-0x000000006F3F0000-0x000000006F99B000-memory.dmp
memory/1736-32-0x0000000002980000-0x00000000029C0000-memory.dmp
memory/1736-33-0x000000006F3F0000-0x000000006F99B000-memory.dmp
memory/1964-3-0x0000000000500000-0x000000000051A000-memory.dmp
memory/1964-6-0x00000000059A0000-0x0000000005A1C000-memory.dmp
memory/1964-5-0x0000000000400000-0x000000000040A000-memory.dmp
memory/1964-4-0x0000000000360000-0x0000000000368000-memory.dmp
memory/1964-24-0x0000000074310000-0x00000000749FE000-memory.dmp
memory/1964-2-0x0000000000310000-0x0000000000350000-memory.dmp
memory/1964-0-0x00000000013A0000-0x0000000001450000-memory.dmp
memory/1964-1-0x0000000074310000-0x00000000749FE000-memory.dmp
memory/2880-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2880-22-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2880-20-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2880-25-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2880-28-0x0000000074310000-0x00000000749FE000-memory.dmp
memory/2880-29-0x0000000004D00000-0x0000000004D40000-memory.dmp
memory/2880-17-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2880-16-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2880-14-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2880-12-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2880-34-0x0000000074310000-0x00000000749FE000-memory.dmp
memory/2880-35-0x0000000004D00000-0x0000000004D40000-memory.dmp