Analysis
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max time kernel
125s -
max time network
51s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
PO.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-596315103-1488671723-776734015-1000\Control Panel\International\Geo\Nation PO.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:
PO.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-596315103-1488671723-776734015-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.exe Key opened \REGISTRY\USER\S-1-5-21-596315103-1488671723-776734015-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO.exe Key opened \REGISTRY\USER\S-1-5-21-596315103-1488671723-776734015-1000\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-1-5-21-596315103-1488671723-776734015-1000\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 6 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PO.exedescription pid process target process PID 3276 set thread context of 3384 3276 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 6 IoCs
Processes:
PO.exepowershell.exepid process 3276 PO.exe 3276 PO.exe 3276 PO.exe 3276 PO.exe 4640 powershell.exe 4640 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
PO.exepowershell.exePO.exedescription pid process Token: SeDebugPrivilege 3276 PO.exe Token: SeDebugPrivilege 4640 powershell.exe Token: SeDebugPrivilege 3384 PO.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
PO.exedescription pid process target process PID 3276 wrote to memory of 4640 3276 PO.exe powershell.exe PID 3276 wrote to memory of 4640 3276 PO.exe powershell.exe PID 3276 wrote to memory of 4640 3276 PO.exe powershell.exe PID 3276 wrote to memory of 4268 3276 PO.exe schtasks.exe PID 3276 wrote to memory of 4268 3276 PO.exe schtasks.exe PID 3276 wrote to memory of 4268 3276 PO.exe schtasks.exe PID 3276 wrote to memory of 872 3276 PO.exe PO.exe PID 3276 wrote to memory of 872 3276 PO.exe PO.exe PID 3276 wrote to memory of 872 3276 PO.exe PO.exe PID 3276 wrote to memory of 3384 3276 PO.exe PO.exe PID 3276 wrote to memory of 3384 3276 PO.exe PO.exe PID 3276 wrote to memory of 3384 3276 PO.exe PO.exe PID 3276 wrote to memory of 3384 3276 PO.exe PO.exe PID 3276 wrote to memory of 3384 3276 PO.exe PO.exe PID 3276 wrote to memory of 3384 3276 PO.exe PO.exe PID 3276 wrote to memory of 3384 3276 PO.exe PO.exe PID 3276 wrote to memory of 3384 3276 PO.exe PO.exe -
outlook_office_path 1 IoCs
Processes:
PO.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-596315103-1488671723-776734015-1000\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-1-5-21-596315103-1488671723-776734015-1000\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⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3276 -
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:4640 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WLJIUp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp83B7.tmp"2⤵
- Creates scheduled task(s)
PID:4268 -
C:\Users\Admin\AppData\Local\Temp\PO.exe"C:\Users\Admin\AppData\Local\Temp\PO.exe"2⤵PID:872
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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:3384
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5723100d15c055b6ece47d43bacc33a8a
SHA146f8f549640dd625f0cf423ea33922894e3e067f
SHA2569012d9038d83d43189a3e1f0fab8187def1eb9559a3e49b26d6e1b66b9ae740e
SHA512c2daf5358b3a78fd02ba85d5c30b9fda1d4d0226c9b6563f1dc1a09e858c1192772f570fc02cdac39ff7a706b71b61b77b5f81b136288c0c02719230c619f4b7