Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
19-12-2023 15:10
Static task
static1
Behavioral task
behavioral1
Sample
specifications.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
specifications.exe
Resource
win10v2004-20231215-en
General
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Target
specifications.exe
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Size
489KB
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MD5
ea62d408154d458d4f304c463bb54020
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SHA1
72952a0d8ddcf5ea36bd0b8eeb613fbd0b2f6de4
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SHA256
ef8385d4683a68a5ce64ba33ddb89cf73848d082047ff886b61b53a042a72cc1
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SHA512
5b89ac053b13c0c96d74c69c402b211cd4b71ca8f6103666cfbaf6dc76b795f69e608a1ff527abf39bb6ed2b7a120a0d7048dc0e645c25751dfca0f779c45a48
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SSDEEP
12288:yrpviYJS8Eg+54Y0YI7LPyig/jZbMbYWZ:yrpasS81+54YavPyigLaT
Malware Config
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/1740-8-0x0000000000400000-0x0000000000426000-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-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\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 31 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
specifications.exedescription pid process target process PID 3088 set thread context of 1740 3088 specifications.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegAsm.exepid process 1740 RegAsm.exe 1740 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 1740 RegAsm.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
specifications.exedescription pid process target process PID 3088 wrote to memory of 1740 3088 specifications.exe RegAsm.exe PID 3088 wrote to memory of 1740 3088 specifications.exe RegAsm.exe PID 3088 wrote to memory of 1740 3088 specifications.exe RegAsm.exe PID 3088 wrote to memory of 1740 3088 specifications.exe RegAsm.exe PID 3088 wrote to memory of 1740 3088 specifications.exe RegAsm.exe PID 3088 wrote to memory of 1740 3088 specifications.exe RegAsm.exe PID 3088 wrote to memory of 1740 3088 specifications.exe RegAsm.exe PID 3088 wrote to memory of 1740 3088 specifications.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\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-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\specifications.exe"C:\Users\Admin\AppData\Local\Temp\specifications.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3088 -
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:1740