Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
15-11-2024 02:21
Static task
static1
Behavioral task
behavioral1
Sample
a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe
Resource
win10v2004-20241007-en
General
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Target
a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe
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Size
1.0MB
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MD5
505d67fc7fb38ee0be3f4970398079a6
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SHA1
c2a865df638a8c2b0100c9f544822975909a574e
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SHA256
a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779
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SHA512
d61d88bb1ac3a778684b2ef984374c7cd8ddff29bc32e6a9799a04582e3d3cd28b3b318014982538ad5b7eaa5ae0232ec5da32d2f0e669301ffbec41e20e7273
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SSDEEP
24576:vtb20pkaCqT5TBWgNQ7a4nPnboy+W5Uw6A:sVg5tQ7a4Mk555
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
w#chNV#1 - 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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Agenttesla family
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegSvcs.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ZUHFqcY = "C:\\Users\\Admin\\AppData\\Roaming\\ZUHFqcY\\ZUHFqcY.exe" RegSvcs.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 15 ip-api.com -
Suspicious use of SetThreadContext 1 IoCs
Processes:
a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exedescription pid Process procid_target PID 3008 set thread context of 3076 3008 a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe 86 -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exeRegSvcs.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegSvcs.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegSvcs.exepid Process 3076 RegSvcs.exe 3076 RegSvcs.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exepid Process 3008 a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegSvcs.exedescription pid Process Token: SeDebugPrivilege 3076 RegSvcs.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exedescription pid Process procid_target PID 3008 wrote to memory of 3076 3008 a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe 86 PID 3008 wrote to memory of 3076 3008 a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe 86 PID 3008 wrote to memory of 3076 3008 a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe 86 PID 3008 wrote to memory of 3076 3008 a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe"C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3008 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Users\Admin\AppData\Local\Temp\a81ba9e0b12c959a4d2415af9e0719bab603f4be3b58ac6669b2efa9c3edd779.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3076
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