Analysis
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max time kernel
138s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
04-06-2023 15:28
Static task
static1
Behavioral task
behavioral1
Sample
A.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
A.exe
Resource
win10v2004-20230220-en
General
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Target
A.exe
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Size
443KB
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MD5
706c4e397de8260d889cf83ba6707e7c
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SHA1
dd4510b6e29157b56b894e06cc8f8687f4af7143
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SHA256
1df360694e4b54909b416b5ef5095e54827c8e53d77885032df144272508f013
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SHA512
d3c55835ff9bc6b00de4e82fc4318baf66a63733c7c88d8a5cd87430038fe7dd35a547dd1978a372dee9b59b8ba9a10e2ed5f35a146342ae4eba8c46da8893e3
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SSDEEP
6144:Ih7kAkJ0xZuuRlxnUDcWZXA3Zz9mTFLHjhzypfbVb4vG8nYH5d7cwSthf64lv:IJLkJARWIyXa5ULHjIZKYH5VvStRTJ
Malware Config
Extracted
snakekeylogger
https://api.telegram.org/bot6184780923:AAHbCGrBU_2zg9A-73yTyKKCMGf1tkzUFbM/sendMessage?chat_id=759814203
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4440-134-0x0000000000400000-0x000000000041E000-memory.dmp family_snakekeylogger -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
Caspol.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Caspol.exe Key opened \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Caspol.exe Key opened \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Caspol.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.
Processes:
flow ioc 13 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
A.exedescription pid process target process PID 2900 set thread context of 4440 2900 A.exe Caspol.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 3300 4440 WerFault.exe Caspol.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
A.exeCaspol.exepid process 2900 A.exe 2900 A.exe 4440 Caspol.exe 4440 Caspol.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
A.exeCaspol.exedescription pid process Token: SeDebugPrivilege 2900 A.exe Token: SeDebugPrivilege 4440 Caspol.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
A.exedescription pid process target process PID 2900 wrote to memory of 2624 2900 A.exe Caspol.exe PID 2900 wrote to memory of 2624 2900 A.exe Caspol.exe PID 2900 wrote to memory of 2624 2900 A.exe Caspol.exe PID 2900 wrote to memory of 4440 2900 A.exe Caspol.exe PID 2900 wrote to memory of 4440 2900 A.exe Caspol.exe PID 2900 wrote to memory of 4440 2900 A.exe Caspol.exe PID 2900 wrote to memory of 4440 2900 A.exe Caspol.exe PID 2900 wrote to memory of 4440 2900 A.exe Caspol.exe PID 2900 wrote to memory of 4440 2900 A.exe Caspol.exe PID 2900 wrote to memory of 4440 2900 A.exe Caspol.exe PID 2900 wrote to memory of 4440 2900 A.exe Caspol.exe -
outlook_office_path 1 IoCs
Processes:
Caspol.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Caspol.exe -
outlook_win_path 1 IoCs
Processes:
Caspol.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Caspol.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\A.exe"C:\Users\Admin\AppData\Local\Temp\A.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\Caspol.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4440 -s 15963⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4440 -ip 44401⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/2900-133-0x000001F95F250000-0x000001F95F2C4000-memory.dmpFilesize
464KB
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memory/4440-134-0x0000000000400000-0x000000000041E000-memory.dmpFilesize
120KB
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memory/4440-136-0x0000000005DA0000-0x0000000006344000-memory.dmpFilesize
5.6MB
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memory/4440-137-0x0000000005730000-0x00000000057CC000-memory.dmpFilesize
624KB
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memory/4440-138-0x0000000005720000-0x0000000005730000-memory.dmpFilesize
64KB