Analysis
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max time kernel
135s -
max time network
148s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
22-10-2021 13:14
Static task
static1
Behavioral task
behavioral1
Sample
VIFON PO.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
VIFON PO.exe
Resource
win10-en-20211014
General
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Target
VIFON PO.exe
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Size
557KB
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MD5
8a3847f7d153e1ac19d9a530abc2b6e3
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SHA1
98962852fa6b0102fd15a3599550576b62fc2ddf
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SHA256
1444e0357cb44d15a7037fa38f19977f5e1d12b6eb516aa2af67efd44b9b9a9c
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SHA512
11d15bfb4a2acb3c7a4e5e6c996bbac0987278ebd1d5a0ef735c646456123498b2530adeed511c6dfa155bbe3601af676e445c3ceea8a7ded0a797e31361dfae
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
sales@xxltrucck.com - Password:
zxcvbnm12345
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1752-62-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1752-63-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1752-65-0x000000000043759E-mapping.dmp family_agenttesla behavioral1/memory/1752-64-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1752-66-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
VIFON PO.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 VIFON PO.exe Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 VIFON PO.exe Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 VIFON PO.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
VIFON PO.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\nwlrFL = "C:\\Users\\Admin\\AppData\\Roaming\\nwlrFL\\nwlrFL.exe" VIFON PO.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
VIFON PO.exedescription pid process target process PID 1396 set thread context of 1752 1396 VIFON PO.exe VIFON PO.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
VIFON PO.exepid process 1752 VIFON PO.exe 1752 VIFON PO.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
VIFON PO.exedescription pid process Token: SeDebugPrivilege 1752 VIFON PO.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
VIFON PO.exedescription pid process target process PID 1396 wrote to memory of 1940 1396 VIFON PO.exe schtasks.exe PID 1396 wrote to memory of 1940 1396 VIFON PO.exe schtasks.exe PID 1396 wrote to memory of 1940 1396 VIFON PO.exe schtasks.exe PID 1396 wrote to memory of 1940 1396 VIFON PO.exe schtasks.exe PID 1396 wrote to memory of 1752 1396 VIFON PO.exe VIFON PO.exe PID 1396 wrote to memory of 1752 1396 VIFON PO.exe VIFON PO.exe PID 1396 wrote to memory of 1752 1396 VIFON PO.exe VIFON PO.exe PID 1396 wrote to memory of 1752 1396 VIFON PO.exe VIFON PO.exe PID 1396 wrote to memory of 1752 1396 VIFON PO.exe VIFON PO.exe PID 1396 wrote to memory of 1752 1396 VIFON PO.exe VIFON PO.exe PID 1396 wrote to memory of 1752 1396 VIFON PO.exe VIFON PO.exe PID 1396 wrote to memory of 1752 1396 VIFON PO.exe VIFON PO.exe PID 1396 wrote to memory of 1752 1396 VIFON PO.exe VIFON PO.exe -
outlook_office_path 1 IoCs
Processes:
VIFON PO.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 VIFON PO.exe -
outlook_win_path 1 IoCs
Processes:
VIFON PO.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 VIFON PO.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\VIFON PO.exe"C:\Users\Admin\AppData\Local\Temp\VIFON PO.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uqxpXHCD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC793.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\VIFON PO.exe"C:\Users\Admin\AppData\Local\Temp\VIFON PO.exe"2⤵
- 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 Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1396-54-0x0000000000C50000-0x0000000000C51000-memory.dmpFilesize
4KB
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memory/1396-56-0x0000000004DB0000-0x0000000004DB1000-memory.dmpFilesize
4KB
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memory/1396-57-0x00000000002F0000-0x00000000002F7000-memory.dmpFilesize
28KB
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memory/1396-58-0x0000000005C40000-0x0000000005C98000-memory.dmpFilesize
352KB
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memory/1752-61-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1752-60-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1752-62-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1752-63-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1752-65-0x000000000043759E-mapping.dmp
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memory/1752-64-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1752-66-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1752-68-0x0000000000C10000-0x0000000000C11000-memory.dmpFilesize
4KB
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memory/1752-69-0x0000000000C11000-0x0000000000C12000-memory.dmpFilesize
4KB
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memory/1940-59-0x0000000000000000-mapping.dmp