Analysis
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max time kernel
98s -
max time network
44s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 12:29
Static task
static1
Behavioral task
behavioral1
Sample
invoice.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
invoice.exe
Resource
win10v2004-20220414-en
General
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Target
invoice.exe
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Size
435KB
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MD5
1408f36656fc33e202b9c94a1a1e834f
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SHA1
419b16277e612d1367f954bb4674d91cfbf4fea8
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SHA256
d5414c39cce4d671db2abfc5879a2a2e97a60313070d37c359b01b50f201aed2
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SHA512
2db1823d75dc6f7c8ee6efafd7c3c78a3668360d4fca935a9a5dbb3b056bf3d399c3714bc37ce2b108a903a24fed701deff68e3004f8c2f4cbf71c1a662c62d9
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.ionos.es - Port:
587 - Username:
info@theunitysoft.de - Password:
77*TeneFe!23*montana
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/1540-58-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
InstallUtil.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts InstallUtil.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
InstallUtil.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
invoice.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\wspSp = "C:\\WYZSGDWS\\wspSpz\\wspSpzsYO.vbs" invoice.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
invoice.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum invoice.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 invoice.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
invoice.exedescription pid process target process PID 1672 set thread context of 1540 1672 invoice.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
InstallUtil.exepid process 1540 InstallUtil.exe 1540 InstallUtil.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
invoice.exepid process 1672 invoice.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
InstallUtil.exedescription pid process Token: SeDebugPrivilege 1540 InstallUtil.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
InstallUtil.exepid process 1540 InstallUtil.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
invoice.exeInstallUtil.exedescription pid process target process PID 1672 wrote to memory of 1540 1672 invoice.exe InstallUtil.exe PID 1672 wrote to memory of 1540 1672 invoice.exe InstallUtil.exe PID 1672 wrote to memory of 1540 1672 invoice.exe InstallUtil.exe PID 1672 wrote to memory of 1540 1672 invoice.exe InstallUtil.exe PID 1672 wrote to memory of 1540 1672 invoice.exe InstallUtil.exe PID 1672 wrote to memory of 1540 1672 invoice.exe InstallUtil.exe PID 1672 wrote to memory of 1540 1672 invoice.exe InstallUtil.exe PID 1672 wrote to memory of 1540 1672 invoice.exe InstallUtil.exe PID 1540 wrote to memory of 540 1540 InstallUtil.exe netsh.exe PID 1540 wrote to memory of 540 1540 InstallUtil.exe netsh.exe PID 1540 wrote to memory of 540 1540 InstallUtil.exe netsh.exe PID 1540 wrote to memory of 540 1540 InstallUtil.exe netsh.exe -
outlook_office_path 1 IoCs
Processes:
InstallUtil.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe -
outlook_win_path 1 IoCs
Processes:
InstallUtil.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\invoice.exe"C:\Users\Admin\AppData\Local\Temp\invoice.exe"1⤵
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\\\\Microsoft.NET\\\\Framework\\\\v4.0.30319\\\\InstallUtil.exe"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/540-60-0x0000000000000000-mapping.dmp
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memory/1540-56-0x000000000044AB2E-mapping.dmp
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memory/1540-58-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1540-59-0x00000000753B1000-0x00000000753B3000-memory.dmpFilesize
8KB
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memory/1672-54-0x0000000000E40000-0x0000000000EB2000-memory.dmpFilesize
456KB
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memory/1672-55-0x00000000006A0000-0x00000000006F4000-memory.dmpFilesize
336KB
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memory/1672-57-0x00000000003B0000-0x00000000003B3000-memory.dmpFilesize
12KB