Analysis
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max time kernel
99s -
max time network
102s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
28-01-2021 15:02
Static task
static1
Behavioral task
behavioral1
Sample
0238-35-pdf.scr.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
0238-35-pdf.scr.exe
Resource
win10v20201028
General
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Target
0238-35-pdf.scr.exe
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Size
3.0MB
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MD5
9b91522e5b94de5ec962c882288671c5
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SHA1
b16caef75e2c751eef2678aafbf2ed5facc9459e
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SHA256
440584979145865d0d4ed8eccb48f90699a2b0c6c6eef0c2162db0d42b1c0fdc
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SHA512
d09fab75ea65faa4b6f01c206c014db414d36728ae164478df6d5bb415bd15c1d8a9a62ace595d33927588cdb3a62c95269e23cfbc05d268a1b06f9a6d381b3d
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.newviking.com.my - Port:
587 - Username:
[email protected] - Password:
{&SgX:^(7m
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Turns off Windows Defender SpyNet reporting 2 TTPs
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AgentTesla Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/4008-34-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/4008-37-0x000000000043763E-mapping.dmp family_agenttesla -
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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Processes:
0238-35-pdf.scr.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths 0238-35-pdf.scr.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions 0238-35-pdf.scr.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1" 0238-35-pdf.scr.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Spynet 0238-35-pdf.scr.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\0238-35-pdf.scr.exe = "0" 0238-35-pdf.scr.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Real-Time Protection 0238-35-pdf.scr.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Spynet\SpyNetReporting = "0" 0238-35-pdf.scr.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Spynet\SubmitSamplesConsent = "0" 0238-35-pdf.scr.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features 0238-35-pdf.scr.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0" 0238-35-pdf.scr.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
0238-35-pdf.scr.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\Administrator Rights = "C:\\Users\\Admin\\AppData\\Roaming\\Administrator Rights\\Administrator Rights.exe" 0238-35-pdf.scr.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
0238-35-pdf.scr.exedescription pid process target process PID 1232 set thread context of 4008 1232 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
powershell.exe0238-35-pdf.scr.exepid process 2668 powershell.exe 2668 powershell.exe 2668 powershell.exe 4008 0238-35-pdf.scr.exe 4008 0238-35-pdf.scr.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
0238-35-pdf.scr.exepid process 4008 0238-35-pdf.scr.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
0238-35-pdf.scr.exepowershell.exe0238-35-pdf.scr.exedescription pid process Token: SeDebugPrivilege 1232 0238-35-pdf.scr.exe Token: SeDebugPrivilege 2668 powershell.exe Token: SeDebugPrivilege 4008 0238-35-pdf.scr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
0238-35-pdf.scr.exedescription pid process target process PID 1232 wrote to memory of 2668 1232 0238-35-pdf.scr.exe powershell.exe PID 1232 wrote to memory of 2668 1232 0238-35-pdf.scr.exe powershell.exe PID 1232 wrote to memory of 2668 1232 0238-35-pdf.scr.exe powershell.exe PID 1232 wrote to memory of 4008 1232 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 1232 wrote to memory of 4008 1232 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 1232 wrote to memory of 4008 1232 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 1232 wrote to memory of 4008 1232 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 1232 wrote to memory of 4008 1232 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 1232 wrote to memory of 4008 1232 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 1232 wrote to memory of 4008 1232 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 1232 wrote to memory of 4008 1232 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0238-35-pdf.scr.exe"C:\Users\Admin\AppData\Local\Temp\0238-35-pdf.scr.exe"1⤵
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\0238-35-pdf.scr.exe" -Force2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\0238-35-pdf.scr.exe"C:\Users\Admin\AppData\Local\Temp\0238-35-pdf.scr.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1232-2-0x0000000073CB0000-0x000000007439E000-memory.dmpFilesize
6.9MB
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memory/1232-3-0x00000000004A0000-0x00000000004A1000-memory.dmpFilesize
4KB
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memory/1232-4-0x0000000004F80000-0x0000000004F81000-memory.dmpFilesize
4KB
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memory/1232-5-0x0000000005200000-0x0000000005201000-memory.dmpFilesize
4KB
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memory/1232-6-0x0000000005750000-0x0000000005797000-memory.dmpFilesize
284KB
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memory/1232-7-0x0000000005EE0000-0x0000000005EE1000-memory.dmpFilesize
4KB
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memory/2668-18-0x0000000008220000-0x0000000008221000-memory.dmpFilesize
4KB
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memory/2668-30-0x0000000009B70000-0x0000000009B71000-memory.dmpFilesize
4KB
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memory/2668-10-0x00000000072F0000-0x00000000072F1000-memory.dmpFilesize
4KB
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memory/2668-11-0x00000000079C0000-0x00000000079C1000-memory.dmpFilesize
4KB
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memory/2668-12-0x0000000007380000-0x0000000007381000-memory.dmpFilesize
4KB
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memory/2668-13-0x0000000007382000-0x0000000007383000-memory.dmpFilesize
4KB
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memory/2668-15-0x00000000080E0000-0x00000000080E1000-memory.dmpFilesize
4KB
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memory/2668-14-0x0000000008020000-0x0000000008021000-memory.dmpFilesize
4KB
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memory/2668-16-0x0000000008150000-0x0000000008151000-memory.dmpFilesize
4KB
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memory/2668-17-0x00000000083A0000-0x00000000083A1000-memory.dmpFilesize
4KB
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memory/2668-8-0x0000000000000000-mapping.dmp
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memory/2668-19-0x00000000087B0000-0x00000000087B1000-memory.dmpFilesize
4KB
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memory/2668-20-0x0000000008AC0000-0x0000000008AC1000-memory.dmpFilesize
4KB
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memory/2668-22-0x0000000009A30000-0x0000000009A63000-memory.dmpFilesize
204KB
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memory/2668-29-0x0000000009A10000-0x0000000009A11000-memory.dmpFilesize
4KB
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memory/2668-9-0x0000000073CB0000-0x000000007439E000-memory.dmpFilesize
6.9MB
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memory/2668-31-0x0000000009D30000-0x0000000009D31000-memory.dmpFilesize
4KB
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memory/2668-32-0x000000007F2D0000-0x000000007F2D1000-memory.dmpFilesize
4KB
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memory/2668-33-0x0000000007383000-0x0000000007384000-memory.dmpFilesize
4KB
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memory/2668-38-0x0000000009CD0000-0x0000000009CD1000-memory.dmpFilesize
4KB
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memory/2668-35-0x0000000009CE0000-0x0000000009CE1000-memory.dmpFilesize
4KB
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memory/4008-37-0x000000000043763E-mapping.dmp
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memory/4008-39-0x0000000073CB0000-0x000000007439E000-memory.dmpFilesize
6.9MB
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memory/4008-34-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/4008-45-0x0000000005390000-0x0000000005391000-memory.dmpFilesize
4KB
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memory/4008-46-0x00000000056B0000-0x00000000056B1000-memory.dmpFilesize
4KB
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memory/4008-48-0x0000000006600000-0x0000000006601000-memory.dmpFilesize
4KB
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memory/4008-49-0x00000000061F0000-0x00000000061F1000-memory.dmpFilesize
4KB
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memory/4008-50-0x0000000005391000-0x0000000005392000-memory.dmpFilesize
4KB