Analysis
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max time kernel
93s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 02:45
Static task
static1
Behavioral task
behavioral1
Sample
RFQ-000083832.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
RFQ-000083832.exe
Resource
win10v2004-20220414-en
General
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Target
RFQ-000083832.exe
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Size
455KB
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MD5
6af267ac464e76c1d7c0b39c258ae7dd
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SHA1
cf073432e9f3a54723ca6b8ea68f90f4ac054630
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SHA256
2ed3c334493409927240f012d70190ef7feca44e27416cede763011ac187c4ef
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SHA512
7ed13d0e9fd6406c98678f9ba8f44d64c1d8297c469e55691a906306416229209dc6a3915b07f4a146cfb581651f285c7d16e14a03823736cd8fe07ab3138c1e
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.pptoursperu.com - Port:
587 - Username:
[email protected] - Password:
mailppt2019-
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 behavioral2/memory/4112-136-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla -
Disables Task Manager via registry modification
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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-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
RFQ-000083832.exedescription pid process target process PID 2348 set thread context of 4112 2348 RFQ-000083832.exe RegSvcs.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 5024 4112 WerFault.exe RegSvcs.exe -
Modifies registry key 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegSvcs.exepid process 4112 RegSvcs.exe 4112 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
RFQ-000083832.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 2348 RFQ-000083832.exe Token: SeDebugPrivilege 4112 RegSvcs.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
RFQ-000083832.exeRegSvcs.exedescription pid process target process PID 2348 wrote to memory of 4112 2348 RFQ-000083832.exe RegSvcs.exe PID 2348 wrote to memory of 4112 2348 RFQ-000083832.exe RegSvcs.exe PID 2348 wrote to memory of 4112 2348 RFQ-000083832.exe RegSvcs.exe PID 2348 wrote to memory of 4112 2348 RFQ-000083832.exe RegSvcs.exe PID 2348 wrote to memory of 4112 2348 RFQ-000083832.exe RegSvcs.exe PID 2348 wrote to memory of 4112 2348 RFQ-000083832.exe RegSvcs.exe PID 2348 wrote to memory of 4112 2348 RFQ-000083832.exe RegSvcs.exe PID 2348 wrote to memory of 4112 2348 RFQ-000083832.exe RegSvcs.exe PID 4112 wrote to memory of 2160 4112 RegSvcs.exe REG.exe PID 4112 wrote to memory of 2160 4112 RegSvcs.exe REG.exe PID 4112 wrote to memory of 2160 4112 RegSvcs.exe REG.exe PID 4112 wrote to memory of 2032 4112 RegSvcs.exe netsh.exe PID 4112 wrote to memory of 2032 4112 RegSvcs.exe netsh.exe PID 4112 wrote to memory of 2032 4112 RegSvcs.exe netsh.exe -
outlook_office_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\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-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ-000083832.exe"C:\Users\Admin\AppData\Local\Temp\RFQ-000083832.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f3⤵
- Modifies registry key
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 15803⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 4112 -ip 41121⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/2032-140-0x0000000000000000-mapping.dmp
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memory/2160-138-0x0000000000000000-mapping.dmp
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memory/2348-130-0x0000000000C50000-0x0000000000CCC000-memory.dmpFilesize
496KB
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memory/2348-131-0x0000000007EE0000-0x0000000008484000-memory.dmpFilesize
5.6MB
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memory/2348-132-0x0000000007A10000-0x0000000007AA2000-memory.dmpFilesize
584KB
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memory/2348-133-0x0000000007BA0000-0x0000000007BAA000-memory.dmpFilesize
40KB
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memory/2348-134-0x000000000B2A0000-0x000000000B33C000-memory.dmpFilesize
624KB
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memory/4112-135-0x0000000000000000-mapping.dmp
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memory/4112-136-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/4112-137-0x0000000005EB0000-0x0000000005F16000-memory.dmpFilesize
408KB
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memory/4112-139-0x0000000006620000-0x0000000006670000-memory.dmpFilesize
320KB