Analysis
- max time kernel
123s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20250217-en - resource tags
- submitted
07/03/2025, 14:06
General
- Target fc6bf2babfb2487a702dfeb041870fa997ca3223eb54f05e2aabeffbbe14094f.exe
- Size 754KB
- Sample250307-repzzasjs3
- SHA256 fc6bf2babfb2487a702dfeb041870fa997ca3223eb54f05e2aabeffbbe14094f
Malware Config
Extracted
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vipkeylogger
-
Protocol
smtp
-
Host
mail.aewn.buzz
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Port
587
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Username
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Password
7213575aceACE@@
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Email to
Signatures
- VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
- Vipkeylogger family
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\fc6bf2babfb2487a702dfeb041870fa997ca3223eb54f05e2aabeffbbe14094f.exe"C:\Users\Admin\AppData\Local\Temp\fc6bf2babfb2487a702dfeb041870fa997ca3223eb54f05e2aabeffbbe14094f.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\fc6bf2babfb2487a702dfeb041870fa997ca3223eb54f05e2aabeffbbe14094f.exe"C:\Users\Admin\AppData\Local\Temp\fc6bf2babfb2487a702dfeb041870fa997ca3223eb54f05e2aabeffbbe14094f.exe"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\fc6bf2babfb2487a702dfeb041870fa997ca3223eb54f05e2aabeffbbe14094f.exe"C:\Users\Admin\AppData\Local\Temp\fc6bf2babfb2487a702dfeb041870fa997ca3223eb54f05e2aabeffbbe14094f.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/1096-11-0x0000000000400000-0x0000000000448000-memory.dmp
memory/1096-18-0x0000000006B30000-0x0000000006B80000-memory.dmp
memory/1096-17-0x0000000006CA0000-0x0000000006E62000-memory.dmp
memory/1096-16-0x0000000075270000-0x0000000075A20000-memory.dmp
memory/1096-15-0x0000000075270000-0x0000000075A20000-memory.dmp
memory/1096-13-0x0000000075270000-0x0000000075A20000-memory.dmp
memory/3604-4-0x0000000075270000-0x0000000075A20000-memory.dmp
memory/3604-7-0x000000007527E000-0x000000007527F000-memory.dmp
memory/3604-8-0x0000000075270000-0x0000000075A20000-memory.dmp
memory/3604-9-0x00000000044A0000-0x000000000452E000-memory.dmp
memory/3604-10-0x0000000006060000-0x00000000060FC000-memory.dmp
memory/3604-6-0x0000000004C60000-0x0000000004C7E000-memory.dmp
memory/3604-5-0x0000000004AC0000-0x0000000004ACA000-memory.dmp
memory/3604-14-0x0000000075270000-0x0000000075A20000-memory.dmp
memory/3604-0-0x000000007527E000-0x000000007527F000-memory.dmp
memory/3604-3-0x0000000004B10000-0x0000000004BA2000-memory.dmp
memory/3604-2-0x00000000050C0000-0x0000000005664000-memory.dmp
memory/3604-1-0x0000000000010000-0x00000000000D2000-memory.dmp