Analysis
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max time kernel
120s -
max time network
125s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
21-10-2021 06:27
Static task
static1
Behavioral task
behavioral1
Sample
PqtuwQbAQoqcY27.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
PqtuwQbAQoqcY27.exe
Resource
win10-en-20211014
General
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Target
PqtuwQbAQoqcY27.exe
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Size
468KB
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MD5
b77e4a6f2c6abab6cf1dc6d4ab5dac2a
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SHA1
a9c585aac523a7d643b5fbf5c6e722123a5f9dde
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SHA256
bc83ce6a585ef0217f5088832b31be76b70a4e3b2c6e8212995c64cf71b7ded4
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SHA512
331977a56172144cf6c8d21ec091a3b913c7815242433335651a5d1c99c4b11a484246fc5b5fd05c89fdc54b64a8731f136c3698c646d1b8b9b753da3388bdc0
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.upgcambodia.com - Port:
587 - Username:
stock@upgcambodia.com - Password:
stock3168
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/940-62-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/940-63-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/940-65-0x000000000043761E-mapping.dmp family_agenttesla behavioral1/memory/940-64-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/940-66-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
RegSvcs.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegSvcs.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 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegSvcs.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PqtuwQbAQoqcY27.exedescription pid process target process PID 1520 set thread context of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
PqtuwQbAQoqcY27.exeRegSvcs.exepid process 1520 PqtuwQbAQoqcY27.exe 1520 PqtuwQbAQoqcY27.exe 1520 PqtuwQbAQoqcY27.exe 1520 PqtuwQbAQoqcY27.exe 940 RegSvcs.exe 940 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
PqtuwQbAQoqcY27.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 1520 PqtuwQbAQoqcY27.exe Token: SeDebugPrivilege 940 RegSvcs.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
PqtuwQbAQoqcY27.exedescription pid process target process PID 1520 wrote to memory of 1452 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1452 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1452 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1452 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1452 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1452 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1452 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1248 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1248 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1248 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1248 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1248 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1248 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 1248 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe PID 1520 wrote to memory of 940 1520 PqtuwQbAQoqcY27.exe RegSvcs.exe -
outlook_office_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
outlook_win_path 1 IoCs
Processes:
RegSvcs.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 RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PqtuwQbAQoqcY27.exe"C:\Users\Admin\AppData\Local\Temp\PqtuwQbAQoqcY27.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.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 Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/940-65-0x000000000043761E-mapping.dmp
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memory/940-63-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/940-69-0x0000000002231000-0x0000000002232000-memory.dmpFilesize
4KB
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memory/940-68-0x0000000002230000-0x0000000002231000-memory.dmpFilesize
4KB
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memory/940-66-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/940-60-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/940-62-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/940-61-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/940-64-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1520-54-0x00000000003A0000-0x00000000003A1000-memory.dmpFilesize
4KB
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memory/1520-56-0x0000000075BD1000-0x0000000075BD3000-memory.dmpFilesize
8KB
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memory/1520-59-0x0000000004EC0000-0x0000000004F18000-memory.dmpFilesize
352KB
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memory/1520-58-0x0000000000900000-0x0000000000901000-memory.dmpFilesize
4KB
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memory/1520-57-0x0000000000390000-0x0000000000397000-memory.dmpFilesize
28KB