Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
05-12-2023 08:31
Static task
static1
Behavioral task
behavioral1
Sample
PO.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
PO.exe
Resource
win10v2004-20231130-en
General
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Target
PO.exe
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Size
740KB
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MD5
b8544d8facfb793edab9d38921933728
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SHA1
5ab5b9c19dd1cf189b49be90233e32dacd32e9e6
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SHA256
a81e919be20c26807dc7d775ccdc026d4a9daf0116661dff5e3fbdaf29effe19
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SHA512
f59aee69180a55f43c35ee32cb0a3a4b58994fd25a195d7557719a0f7b6c482fe561fd13a239772e32a04512391ffaed520ab85399eb0dbff75356585e88ac6f
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SSDEEP
12288:DWVretW8G34/uK45+po2ys7l/yOKRXDGz5aTbFQG1uJ073ZCeg/:4x34/up+pJyoaOMTGz5atQZJ0r
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
kV$bSqJ1 daniel - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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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:
PO.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.exe Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.exe Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
PO.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\sOFvE = "C:\\Users\\Admin\\AppData\\Roaming\\sOFvE\\sOFvE.exe" PO.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PO.exedescription pid process target process PID 2180 set thread context of 2648 2180 PO.exe PO.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 3 IoCs
Processes:
PO.exepowershell.exepid process 2180 PO.exe 2180 PO.exe 1364 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
PO.exePO.exepowershell.exedescription pid process Token: SeDebugPrivilege 2180 PO.exe Token: SeDebugPrivilege 2648 PO.exe Token: SeDebugPrivilege 1364 powershell.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
PO.exedescription pid process target process PID 2180 wrote to memory of 1364 2180 PO.exe powershell.exe PID 2180 wrote to memory of 1364 2180 PO.exe powershell.exe PID 2180 wrote to memory of 1364 2180 PO.exe powershell.exe PID 2180 wrote to memory of 1364 2180 PO.exe powershell.exe PID 2180 wrote to memory of 2252 2180 PO.exe schtasks.exe PID 2180 wrote to memory of 2252 2180 PO.exe schtasks.exe PID 2180 wrote to memory of 2252 2180 PO.exe schtasks.exe PID 2180 wrote to memory of 2252 2180 PO.exe schtasks.exe PID 2180 wrote to memory of 2648 2180 PO.exe PO.exe PID 2180 wrote to memory of 2648 2180 PO.exe PO.exe PID 2180 wrote to memory of 2648 2180 PO.exe PO.exe PID 2180 wrote to memory of 2648 2180 PO.exe PO.exe PID 2180 wrote to memory of 2648 2180 PO.exe PO.exe PID 2180 wrote to memory of 2648 2180 PO.exe PO.exe PID 2180 wrote to memory of 2648 2180 PO.exe PO.exe PID 2180 wrote to memory of 2648 2180 PO.exe PO.exe PID 2180 wrote to memory of 2648 2180 PO.exe PO.exe -
outlook_office_path 1 IoCs
Processes:
PO.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.exe -
outlook_win_path 1 IoCs
Processes:
PO.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO.exe"C:\Users\Admin\AppData\Local\Temp\PO.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2180 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WLJIUp.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1364 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WLJIUp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp452B.tmp"2⤵
- Creates scheduled task(s)
PID:2252 -
C:\Users\Admin\AppData\Local\Temp\PO.exe"C:\Users\Admin\AppData\Local\Temp\PO.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2648
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5680558c604cba8527dfb1745fc000309
SHA1371a6031bbad865edc7df34face61c29ee123707
SHA25648b5df2980870e8dba48c691e54c0beeefbed76398c87bebb83617a0db98c6ff
SHA5122b73dab72bb5f808a2c97eeeda3575e387ca2a54e9f063e52282960082283b66c2905311b14328b5a9215d2b4baa267fa8a5f8a4ea94b17e8c9efc2136e8fc61