Analysis
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max time kernel
141s -
max time network
132s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
06-03-2024 02:04
Static task
static1
Behavioral task
behavioral1
Sample
b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe
Resource
win10v2004-20240226-en
General
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Target
b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe
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Size
870KB
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MD5
de7aa76fae7c8c9c291e38b63a4969e7
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SHA1
b9eac7a45209cff192d88b514359f9f6527b6108
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SHA256
b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43
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SHA512
e08291061b2297a5320efcf56c4a3c8c4a4a68a747e04f475d8662cb3bc5d92a2b377547666a9924af0fed2d705e55566c53198c379390e7556a37279b2baa1e
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SSDEEP
12288:0DdCjlqQj5jG3ylTBkml8M6M+DVx0I550wWTbNQvSbL2:BEejtPhKEI70LbuAL2
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.guestequipment.com.au - Port:
587 - Username:
[email protected] - Password:
Clone89! - 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-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\newfile = "C:\\Users\\Admin\\AppData\\Roaming\\newfile\\newfile.exe" InstallUtil.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.
flow ioc 58 ip-api.com -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4540 set thread context of 4240 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 102 -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 4240 InstallUtil.exe 4240 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe Token: SeDebugPrivilege 4240 InstallUtil.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4540 wrote to memory of 4240 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 102 PID 4540 wrote to memory of 4240 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 102 PID 4540 wrote to memory of 4240 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 102 PID 4540 wrote to memory of 4240 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 102 PID 4540 wrote to memory of 4240 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 102 PID 4540 wrote to memory of 4240 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 102 PID 4540 wrote to memory of 4240 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 102 PID 4540 wrote to memory of 4240 4540 b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe 102
Processes
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C:\Users\Admin\AppData\Local\Temp\b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe"C:\Users\Admin\AppData\Local\Temp\b77a822b8d6011db096cfc1c77093658abfed4c7ae160d8c31c8534405eacb43.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4540 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4240
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