Analysis
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max time kernel
99s -
max time network
119s -
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/4580-36-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/4580-39-0x000000000043763E-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 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 Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features 0238-35-pdf.scr.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths 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\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 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 4776 set thread context of 4580 4776 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 1896 powershell.exe 1896 powershell.exe 1896 powershell.exe 4580 0238-35-pdf.scr.exe 4580 0238-35-pdf.scr.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
0238-35-pdf.scr.exepid process 4580 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 4776 0238-35-pdf.scr.exe Token: SeDebugPrivilege 1896 powershell.exe Token: SeDebugPrivilege 4580 0238-35-pdf.scr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
0238-35-pdf.scr.exedescription pid process target process PID 4776 wrote to memory of 1896 4776 0238-35-pdf.scr.exe powershell.exe PID 4776 wrote to memory of 1896 4776 0238-35-pdf.scr.exe powershell.exe PID 4776 wrote to memory of 1896 4776 0238-35-pdf.scr.exe powershell.exe PID 4776 wrote to memory of 4580 4776 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 4776 wrote to memory of 4580 4776 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 4776 wrote to memory of 4580 4776 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 4776 wrote to memory of 4580 4776 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 4776 wrote to memory of 4580 4776 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 4776 wrote to memory of 4580 4776 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 4776 wrote to memory of 4580 4776 0238-35-pdf.scr.exe 0238-35-pdf.scr.exe PID 4776 wrote to memory of 4580 4776 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/1896-18-0x0000000008060000-0x0000000008061000-memory.dmpFilesize
4KB
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memory/1896-34-0x0000000009BC0000-0x0000000009BC1000-memory.dmpFilesize
4KB
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memory/1896-37-0x0000000009BB0000-0x0000000009BB1000-memory.dmpFilesize
4KB
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memory/1896-19-0x0000000008810000-0x0000000008811000-memory.dmpFilesize
4KB
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memory/1896-33-0x0000000007333000-0x0000000007334000-memory.dmpFilesize
4KB
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memory/1896-20-0x0000000008A40000-0x0000000008A41000-memory.dmpFilesize
4KB
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memory/1896-8-0x0000000000000000-mapping.dmp
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memory/1896-9-0x0000000073370000-0x0000000073A5E000-memory.dmpFilesize
6.9MB
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memory/1896-10-0x0000000007180000-0x0000000007181000-memory.dmpFilesize
4KB
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memory/1896-11-0x0000000007970000-0x0000000007971000-memory.dmpFilesize
4KB
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memory/1896-12-0x00000000078A0000-0x00000000078A1000-memory.dmpFilesize
4KB
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memory/1896-13-0x0000000007FA0000-0x0000000007FA1000-memory.dmpFilesize
4KB
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memory/1896-14-0x00000000081F0000-0x00000000081F1000-memory.dmpFilesize
4KB
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memory/1896-15-0x00000000082B0000-0x00000000082B1000-memory.dmpFilesize
4KB
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memory/1896-16-0x0000000007330000-0x0000000007331000-memory.dmpFilesize
4KB
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memory/1896-17-0x0000000007332000-0x0000000007333000-memory.dmpFilesize
4KB
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memory/1896-32-0x000000007E820000-0x000000007E821000-memory.dmpFilesize
4KB
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memory/1896-31-0x0000000009C10000-0x0000000009C11000-memory.dmpFilesize
4KB
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memory/1896-30-0x0000000009A50000-0x0000000009A51000-memory.dmpFilesize
4KB
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memory/1896-22-0x0000000009710000-0x0000000009743000-memory.dmpFilesize
204KB
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memory/1896-29-0x00000000096F0000-0x00000000096F1000-memory.dmpFilesize
4KB
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memory/4580-45-0x00000000059C0000-0x00000000059C1000-memory.dmpFilesize
4KB
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memory/4580-40-0x0000000073370000-0x0000000073A5E000-memory.dmpFilesize
6.9MB
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memory/4580-49-0x0000000006470000-0x0000000006471000-memory.dmpFilesize
4KB
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memory/4580-50-0x00000000059C1000-0x00000000059C2000-memory.dmpFilesize
4KB
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memory/4580-48-0x0000000006B10000-0x0000000006B11000-memory.dmpFilesize
4KB
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memory/4580-36-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/4580-46-0x00000000059A0000-0x00000000059A1000-memory.dmpFilesize
4KB
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memory/4580-39-0x000000000043763E-mapping.dmp
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memory/4776-5-0x0000000005830000-0x0000000005831000-memory.dmpFilesize
4KB
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memory/4776-7-0x0000000007960000-0x0000000007961000-memory.dmpFilesize
4KB
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memory/4776-4-0x00000000056B0000-0x00000000056B1000-memory.dmpFilesize
4KB
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memory/4776-3-0x0000000000B10000-0x0000000000B11000-memory.dmpFilesize
4KB
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memory/4776-2-0x0000000073370000-0x0000000073A5E000-memory.dmpFilesize
6.9MB
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memory/4776-6-0x0000000005130000-0x0000000005177000-memory.dmpFilesize
284KB