Analysis
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max time kernel
157s -
max time network
164s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 01:42
Static task
static1
Behavioral task
behavioral1
Sample
Stone Quotation.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
Stone Quotation.exe
Resource
win10v2004-20220414-en
General
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Target
Stone Quotation.exe
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Size
565KB
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MD5
75346fc05ce9a0921add66bfe01fb2e2
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SHA1
c833b6d3d6daf09ba2bc456157aac5c517dc3895
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SHA256
6bfaed4b195fabe34d859307606ab45f4be80702d73e60efce3147b3a75d48f6
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SHA512
afe384255acaa52130aaf690be1743edc38e3dd4da63443c4190c34bd9176b1fd35f8cf286f7944ba5ad9698e61ec0fdecaba993e1f98acd4069e68479d3e455
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.chenklins.com - Port:
587 - Username:
[email protected] - Password:
VBRSv_r)C~mM
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/2468-135-0x0000000000400000-0x000000000045A000-memory.dmp family_agenttesla -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Stone Quotation.exedescription pid process target process PID 2376 set thread context of 2468 2376 Stone Quotation.exe MSBuild.exe -
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:
MSBuild.exepid process 2468 MSBuild.exe 2468 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
MSBuild.exedescription pid process Token: SeDebugPrivilege 2468 MSBuild.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
MSBuild.exepid process 2468 MSBuild.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
Stone Quotation.execmd.exedescription pid process target process PID 2376 wrote to memory of 4380 2376 Stone Quotation.exe cmd.exe PID 2376 wrote to memory of 4380 2376 Stone Quotation.exe cmd.exe PID 2376 wrote to memory of 4380 2376 Stone Quotation.exe cmd.exe PID 4380 wrote to memory of 3496 4380 cmd.exe schtasks.exe PID 4380 wrote to memory of 3496 4380 cmd.exe schtasks.exe PID 4380 wrote to memory of 3496 4380 cmd.exe schtasks.exe PID 2376 wrote to memory of 2468 2376 Stone Quotation.exe MSBuild.exe PID 2376 wrote to memory of 2468 2376 Stone Quotation.exe MSBuild.exe PID 2376 wrote to memory of 2468 2376 Stone Quotation.exe MSBuild.exe PID 2376 wrote to memory of 2468 2376 Stone Quotation.exe MSBuild.exe PID 2376 wrote to memory of 2468 2376 Stone Quotation.exe MSBuild.exe PID 2376 wrote to memory of 2468 2376 Stone Quotation.exe MSBuild.exe PID 2376 wrote to memory of 2468 2376 Stone Quotation.exe MSBuild.exe PID 2376 wrote to memory of 2468 2376 Stone Quotation.exe MSBuild.exe -
outlook_office_path 1 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
outlook_win_path 1 IoCs
Processes:
MSBuild.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 MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Stone Quotation.exe"C:\Users\Admin\AppData\Local\Temp\Stone Quotation.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2376 -
C:\Windows\SysWOW64\cmd.execmd /c schtasks /Create /TN tenda /XML "C:\Users\Admin\AppData\Local\Temp\9853f71761e4486ba753aaab1f5bb940.xml"2⤵
- Suspicious use of WriteProcessMemory
PID:4380 -
C:\Windows\SysWOW64\schtasks.exeschtasks /Create /TN tenda /XML "C:\Users\Admin\AppData\Local\Temp\9853f71761e4486ba753aaab1f5bb940.xml"3⤵
- Creates scheduled task(s)
PID:3496 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"C:\Users\Admin\AppData\Local\Temp\Stone Quotation.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:2468
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\9853f71761e4486ba753aaab1f5bb940.xmlFilesize
1KB
MD5a535cdced814059851becca0bdd3a5a7
SHA17a81ee30ca6e574d013871c60f1d55f887155f93
SHA25662b0b0dd65622f2603e3b3b5bc299ede24da9d152856042386ed8addef9b1c09
SHA512dad0d930447a40da974686a8a10571afe1ed3780a0192067a6727683eb2290b95e33c3408709389d554569a5598fde9a072900471be2050a067cf104701c8089
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memory/2376-131-0x00000000007A0000-0x0000000000832000-memory.dmpFilesize
584KB
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memory/2468-134-0x0000000000000000-mapping.dmp
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memory/2468-135-0x0000000000400000-0x000000000045A000-memory.dmpFilesize
360KB
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memory/2468-136-0x00000000755C0000-0x0000000075B71000-memory.dmpFilesize
5.7MB
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memory/3496-132-0x0000000000000000-mapping.dmp
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memory/4380-130-0x0000000000000000-mapping.dmp