Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
22-05-2024 14:33
Static task
static1
Behavioral task
behavioral1
Sample
f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe
Resource
win10v2004-20240508-en
General
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Target
f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe
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Size
1.2MB
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MD5
0121ac85dac0e08a52e66625dd8f7b76
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SHA1
c584b4edae0914020a6b46690bfc2f2ca0e3f2e0
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SHA256
f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33
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SHA512
1ebe1cc2f221b0148197d770b50aebc19af17244f859540963c99bc3e2e3dfa1db0b042d0f9c36d4d6754eb597f60d2ed5757e30fb7c7eb88767895d407c8f11
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SSDEEP
24576:6XMUEIvSt6qJ3zH6s5K4Z3LNeBXr3v6QXBUdAiZO8IZO:y0mM3LclTdviUvZO
Malware Config
Extracted
Protocol: smtp- Host:
mail.brusln.com - Port:
587 - Username:
[email protected] - Password:
Countrycode@2024
Extracted
agenttesla
Protocol: smtp- Host:
mail.brusln.com - Port:
587 - Username:
[email protected] - Password:
Countrycode@2024 - 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
Processes:
msbuild.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\plQRn12hj21nbv = "C:\\Users\\Admin\\AppData\\Roaming\\plQRn12hj21nbv\\plQRn12hj21nbv.exe" msbuild.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.
Processes:
flow ioc 17 api.ipify.org 16 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exedescription pid process target process PID 2004 set thread context of 412 2004 f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe msbuild.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
msbuild.exepid process 412 msbuild.exe 412 msbuild.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
msbuild.exedescription pid process Token: SeDebugPrivilege 412 msbuild.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msbuild.exepid process 412 msbuild.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exedescription pid process target process PID 2004 wrote to memory of 412 2004 f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe msbuild.exe PID 2004 wrote to memory of 412 2004 f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe msbuild.exe PID 2004 wrote to memory of 412 2004 f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe msbuild.exe PID 2004 wrote to memory of 412 2004 f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe msbuild.exe PID 2004 wrote to memory of 412 2004 f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe msbuild.exe PID 2004 wrote to memory of 412 2004 f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe msbuild.exe PID 2004 wrote to memory of 412 2004 f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe msbuild.exe PID 2004 wrote to memory of 412 2004 f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe msbuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe"C:\Users\Admin\AppData\Local\Temp\f894fa54f71bd0db52bdaf11c509a604e2247b36aec512d3456b96119e477d33.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2004 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:412
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