Analysis
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max time kernel
87s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 04:10
Static task
static1
Behavioral task
behavioral1
Sample
Quotation sheet.doc
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
Quotation sheet.doc
Resource
win10v2004-20220414-en
Behavioral task
behavioral3
Sample
offer_pdf.exe
Resource
win7-20220414-en
Behavioral task
behavioral4
Sample
offer_pdf.exe
Resource
win10v2004-20220414-en
General
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Target
offer_pdf.exe
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Size
698KB
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MD5
d6c4a40b53155650b55182e4e51e0e26
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SHA1
4af700b05b0a551c95db315e486895c8610e8169
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SHA256
ddefa12712998a6705858c96559d4f08a6f75615298c321be7eecc1a60ccc04f
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SHA512
a81667f40aa9f6643b6b8214f557ecf5da7d6f404c00b1ba52076b3da58326c9a75a8c32ede0845145171123d2b231552691327b29a7d4e120f4a9cdeca4e238
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.mosaiclayouts.com - Port:
587 - Username:
sales@mosaiclayouts.com - Password:
UY$W4+]^+9;)7CF5
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 2 IoCs
Processes:
resource yara_rule behavioral3/memory/1716-59-0x0000000000570000-0x00000000005BC000-memory.dmp family_agenttesla behavioral3/memory/1716-58-0x0000000000570000-0x00000000005BC000-memory.dmp family_agenttesla -
Drops startup file 1 IoCs
Processes:
notepad.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\app.vbs notepad.exe -
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:
offer_pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 offer_pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 offer_pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 offer_pdf.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
offer_pdf.exedescription pid process target process PID 732 set thread context of 1716 732 offer_pdf.exe offer_pdf.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
offer_pdf.exeoffer_pdf.exepid process 732 offer_pdf.exe 1716 offer_pdf.exe 1716 offer_pdf.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
offer_pdf.exepid process 732 offer_pdf.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
offer_pdf.exedescription pid process Token: SeDebugPrivilege 1716 offer_pdf.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
offer_pdf.exedescription pid process target process PID 732 wrote to memory of 1704 732 offer_pdf.exe notepad.exe PID 732 wrote to memory of 1704 732 offer_pdf.exe notepad.exe PID 732 wrote to memory of 1704 732 offer_pdf.exe notepad.exe PID 732 wrote to memory of 1704 732 offer_pdf.exe notepad.exe PID 732 wrote to memory of 1704 732 offer_pdf.exe notepad.exe PID 732 wrote to memory of 1704 732 offer_pdf.exe notepad.exe PID 732 wrote to memory of 1716 732 offer_pdf.exe offer_pdf.exe PID 732 wrote to memory of 1716 732 offer_pdf.exe offer_pdf.exe PID 732 wrote to memory of 1716 732 offer_pdf.exe offer_pdf.exe PID 732 wrote to memory of 1716 732 offer_pdf.exe offer_pdf.exe -
outlook_office_path 1 IoCs
Processes:
offer_pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 offer_pdf.exe -
outlook_win_path 1 IoCs
Processes:
offer_pdf.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 offer_pdf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\offer_pdf.exe"C:\Users\Admin\AppData\Local\Temp\offer_pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\notepad.exe"C:\Windows\system32\notepad.exe"2⤵
- Drops startup file
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C:\Users\Admin\AppData\Local\Temp\offer_pdf.exe"C:\Users\Admin\AppData\Local\Temp\offer_pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- 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/732-54-0x0000000075781000-0x0000000075783000-memory.dmpFilesize
8KB
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memory/732-61-0x0000000000400000-0x00000000004B5000-memory.dmpFilesize
724KB
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memory/1704-55-0x0000000000000000-mapping.dmp
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memory/1716-56-0x00000000004A34D0-mapping.dmp
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memory/1716-59-0x0000000000570000-0x00000000005BC000-memory.dmpFilesize
304KB
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memory/1716-58-0x0000000000570000-0x00000000005BC000-memory.dmpFilesize
304KB