Analysis
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max time kernel
149s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
03-06-2024 09:51
Static task
static1
Behavioral task
behavioral1
Sample
Requirement Specification.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Requirement Specification.exe
Resource
win10v2004-20240426-en
General
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Target
Requirement Specification.exe
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Size
3.4MB
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MD5
86b91372dc46212aa7f5310339a6f7f3
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SHA1
ddfd08661f0f3a515c3802cf3042b002d1748d53
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SHA256
564d2275edd8f622be6717d156c627a346f330549ca2f266985e49a4e5e17204
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SHA512
6f2dfbb44854f6021752691d3c4328cdd6b40695fc923b0c28f8432d8c9d4fa217e75dce067ed86a58f8d8e424593035fb3084bee5a1b6b29fa5b872e1211210
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SSDEEP
49152:h8yJAk206NICMq5pzKRgqVzKfxgF2/yjmQkk2:2Bsb/kk2
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
business29.web-hosting.com - Port:
587 - Username:
[email protected] - Password:
Mas_#()@?"obo""" - 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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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Requirement Specification.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Requirement Specification = "C:\\Users\\Admin\\Requirement Specification.exe" Requirement Specification.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 14 api.ipify.org 16 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Requirement Specification.exedescription pid process target process PID 1592 set thread context of 3536 1592 Requirement Specification.exe msbuild.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exemsbuild.exepid process 1232 powershell.exe 1232 powershell.exe 3536 msbuild.exe 3536 msbuild.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exemsbuild.exedescription pid process Token: SeDebugPrivilege 1232 powershell.exe Token: SeDebugPrivilege 3536 msbuild.exe -
Suspicious use of WriteProcessMemory 18 IoCs
Processes:
Requirement Specification.exedescription pid process target process PID 1592 wrote to memory of 1232 1592 Requirement Specification.exe powershell.exe PID 1592 wrote to memory of 1232 1592 Requirement Specification.exe powershell.exe PID 1592 wrote to memory of 2408 1592 Requirement Specification.exe CasPol.exe PID 1592 wrote to memory of 2408 1592 Requirement Specification.exe CasPol.exe PID 1592 wrote to memory of 2408 1592 Requirement Specification.exe CasPol.exe PID 1592 wrote to memory of 2408 1592 Requirement Specification.exe CasPol.exe PID 1592 wrote to memory of 592 1592 Requirement Specification.exe regasm.exe PID 1592 wrote to memory of 592 1592 Requirement Specification.exe regasm.exe PID 1592 wrote to memory of 592 1592 Requirement Specification.exe regasm.exe PID 1592 wrote to memory of 592 1592 Requirement Specification.exe regasm.exe PID 1592 wrote to memory of 3536 1592 Requirement Specification.exe msbuild.exe PID 1592 wrote to memory of 3536 1592 Requirement Specification.exe msbuild.exe PID 1592 wrote to memory of 3536 1592 Requirement Specification.exe msbuild.exe PID 1592 wrote to memory of 3536 1592 Requirement Specification.exe msbuild.exe PID 1592 wrote to memory of 3536 1592 Requirement Specification.exe msbuild.exe PID 1592 wrote to memory of 3536 1592 Requirement Specification.exe msbuild.exe PID 1592 wrote to memory of 3536 1592 Requirement Specification.exe msbuild.exe PID 1592 wrote to memory of 3536 1592 Requirement Specification.exe msbuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Requirement Specification.exe"C:\Users\Admin\AppData\Local\Temp\Requirement Specification.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1592 -
C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exeC:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath $env:UserProfile2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1232 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"2⤵PID:2408
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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⤵PID:592
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3536
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82