Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
09-10-2024 11:04
Static task
static1
Behavioral task
behavioral1
Sample
Docs.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Docs.exe
Resource
win10v2004-20241007-en
General
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Target
Docs.exe
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Size
1.1MB
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MD5
9b5147cc095f0509964efa7f5daebdec
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SHA1
6a1b85f7d809b5e34d31822e16a557fc0c8f4b31
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SHA256
0989a20ad0aceb20e2199f0bceaec9461f94b49899f7d2cb1ce61d05473f5d1a
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SHA512
e191b63e7c095f6415dd546646fcb558f3d3ea65684293dc3a9c6544611262dbf50b4da623f4f30d9cdad1511071ad31eb575f29b206f94e2e422d515cbf0294
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SSDEEP
24576:ffmMv6Ckr7Mny5QLj9PHl2ZjITtmuoEx9LMQUW:f3v+7/5QLZPpl5L
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.starmech.net - Port:
587 - Username:
[email protected] - Password:
nics123 - 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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BjTxJte = "C:\\Users\\Admin\\AppData\\Roaming\\BjTxJte\\BjTxJte.exe" RegSvcs.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 14 api.ipify.org 15 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3336 set thread context of 2496 3336 Docs.exe 86 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Docs.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegSvcs.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2496 RegSvcs.exe 2496 RegSvcs.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 3336 Docs.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2496 RegSvcs.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2496 RegSvcs.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3336 wrote to memory of 2496 3336 Docs.exe 86 PID 3336 wrote to memory of 2496 3336 Docs.exe 86 PID 3336 wrote to memory of 2496 3336 Docs.exe 86 PID 3336 wrote to memory of 2496 3336 Docs.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\Docs.exe"C:\Users\Admin\AppData\Local\Temp\Docs.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3336 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Users\Admin\AppData\Local\Temp\Docs.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2496
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