Analysis
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max time kernel
126s -
max time network
124s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
20-10-2021 10:14
Static task
static1
Behavioral task
behavioral1
Sample
ap48HeATQYHcrwN.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
ap48HeATQYHcrwN.exe
Resource
win10-en-20211014
General
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Target
ap48HeATQYHcrwN.exe
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Size
437KB
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MD5
9b22dc57a731a0a502a43597b27128bf
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SHA1
a04e5092ceeb4cef232ca35eb7b1bb10b39ed8d0
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SHA256
186105dca5f36d5109a075a9b4a9eac5114e34377cacc519dcd6f5cf0541c9f3
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SHA512
e94f3866385ceeaeebfc401d154fc81dfa6f10475df98eee2888269cbc58b7a1560231cf76552239902efbb20de89a9199763595dd95e41b4e58ab60694e09fb
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.priserveinfra.com - Port:
587 - Username:
[email protected] - Password:
oppipl121019
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1084-61-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1084-62-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1084-63-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1084-64-0x000000000043762E-mapping.dmp family_agenttesla behavioral1/memory/1084-65-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
MSBuild.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts MSBuild.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
MSBuild.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe" MSBuild.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
ap48HeATQYHcrwN.exedescription pid process target process PID 1596 set thread context of 1084 1596 ap48HeATQYHcrwN.exe MSBuild.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
ap48HeATQYHcrwN.exeMSBuild.exepid process 1596 ap48HeATQYHcrwN.exe 1596 ap48HeATQYHcrwN.exe 1084 MSBuild.exe 1084 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
ap48HeATQYHcrwN.exeMSBuild.exedescription pid process Token: SeDebugPrivilege 1596 ap48HeATQYHcrwN.exe Token: SeDebugPrivilege 1084 MSBuild.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
ap48HeATQYHcrwN.exedescription pid process target process PID 1596 wrote to memory of 1084 1596 ap48HeATQYHcrwN.exe MSBuild.exe PID 1596 wrote to memory of 1084 1596 ap48HeATQYHcrwN.exe MSBuild.exe PID 1596 wrote to memory of 1084 1596 ap48HeATQYHcrwN.exe MSBuild.exe PID 1596 wrote to memory of 1084 1596 ap48HeATQYHcrwN.exe MSBuild.exe PID 1596 wrote to memory of 1084 1596 ap48HeATQYHcrwN.exe MSBuild.exe PID 1596 wrote to memory of 1084 1596 ap48HeATQYHcrwN.exe MSBuild.exe PID 1596 wrote to memory of 1084 1596 ap48HeATQYHcrwN.exe MSBuild.exe PID 1596 wrote to memory of 1084 1596 ap48HeATQYHcrwN.exe MSBuild.exe PID 1596 wrote to memory of 1084 1596 ap48HeATQYHcrwN.exe MSBuild.exe -
outlook_office_path 1 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
outlook_win_path 1 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ap48HeATQYHcrwN.exe"C:\Users\Admin\AppData\Local\Temp\ap48HeATQYHcrwN.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1084-63-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1084-62-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1084-68-0x0000000004A11000-0x0000000004A12000-memory.dmpFilesize
4KB
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memory/1084-67-0x0000000004A10000-0x0000000004A11000-memory.dmpFilesize
4KB
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memory/1084-65-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1084-59-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1084-61-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1084-60-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1084-64-0x000000000043762E-mapping.dmp
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memory/1596-53-0x00000000002A0000-0x00000000002A1000-memory.dmpFilesize
4KB
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memory/1596-55-0x00000000757B1000-0x00000000757B3000-memory.dmpFilesize
8KB
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memory/1596-58-0x00000000050C0000-0x0000000005118000-memory.dmpFilesize
352KB
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memory/1596-57-0x0000000000370000-0x0000000000377000-memory.dmpFilesize
28KB
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memory/1596-56-0x00000000043A0000-0x00000000043A1000-memory.dmpFilesize
4KB