Analysis
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max time kernel
122s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
25-12-2023 14:35
Static task
static1
Behavioral task
behavioral1
Sample
Max.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
Max.exe
Resource
win10v2004-20231215-en
General
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Target
Max.exe
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Size
772KB
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MD5
770f963943fae86ad2fb95533defae2d
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SHA1
efadeaa28fe3c30e1224d41836b40666f9f5cd38
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SHA256
fd3215fd4bcb33f2149cd4bed63011c2b992b5a008cdd289559031741e8a3089
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SHA512
ae6480f80555dd6ed6dd8780d9faf4b0b3ba21a8b3f0ff50c73a5d38fa930ddc34e09ee0aaeb208c08d334b7404ab854478e1a39f929a496835e21de50a052c5
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SSDEEP
12288:ZJpHCmbiNIwP7BpD1tM2MH6YZLuKw3WDJV733EgpAbSVv8Ipch:VCFPNpD1tM2MTZLEwV
Malware Config
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1068-8-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/1068-9-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/1068-12-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/1068-15-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger behavioral1/memory/1068-17-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger -
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.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 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Max.exedescription pid process target process PID 2112 set thread context of 1068 2112 Max.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegAsm.exepid process 1068 RegAsm.exe 1068 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 1068 RegAsm.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
Max.exedescription pid process target process PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe PID 2112 wrote to memory of 1068 2112 Max.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
outlook_win_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Max.exe"C:\Users\Admin\AppData\Local\Temp\Max.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2112 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1068