Analysis
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max time kernel
142s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
01-12-2023 14:26
Static task
static1
Behavioral task
behavioral1
Sample
wlanext.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
wlanext.exe
Resource
win10-20231020-en
Behavioral task
behavioral3
Sample
wlanext.exe
Resource
win10v2004-20231127-en
General
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Target
wlanext.exe
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Size
823KB
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MD5
3713c253ab56bf85aaa806fc41cc6905
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SHA1
cf59aac87590bb5f3bba092f20455b097a1ffab5
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SHA256
ae52ee94e65fb54e279703124ab5ee6191f655f61c5302c49e4cd862cfd1dc17
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SHA512
ca02a48ec0ff561e50817d661830cd4c4cf39fdc9e458a8fc93170d0fbafc6d1c5f6903a888b95c313e639c74e1e2c2369486873a14fcfbafaa58c7313230f87
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SSDEEP
24576:GSqnsJhQ8AA6vkIx4W8AHPb41CEjSd8n:JqnsPx6vQA7USun
Malware Config
Extracted
agenttesla
Protocol: ftp- Host:
ftp://ftp.experthvac.ro - Port:
21 - Username:
[email protected] - Password:
-8{jszMOY*Z8(~Za0#jyP%o7VoB.0)kk^)7_
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:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
wlanext.exedescription pid process target process PID 2956 set thread context of 2136 2956 wlanext.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
wlanext.exepid process 2956 wlanext.exe 2956 wlanext.exe 2956 wlanext.exe 2956 wlanext.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
wlanext.exeRegAsm.exedescription pid process Token: SeDebugPrivilege 2956 wlanext.exe Token: SeDebugPrivilege 2136 RegAsm.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
wlanext.exedescription pid process target process PID 2956 wrote to memory of 3892 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 3892 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 3892 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 3892 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 3892 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 3892 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 3892 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 3892 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 2136 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 2136 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 2136 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 2136 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 2136 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 2136 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 2136 2956 wlanext.exe RegAsm.exe PID 2956 wrote to memory of 2136 2956 wlanext.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
outlook_win_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\wlanext.exe"C:\Users\Admin\AppData\Local\Temp\wlanext.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2956 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵PID:3892
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2136