Analysis
- max time kernel
129s - max time network
133s - platform
windows10-2004_x64 - resource
win10v2004-20250129-en - resource tags
- submitted
29/01/2025, 15:18
General
- Target Halkbank_Ekstre_20240508_074644_755730.pdf.exe
- Size 892KB
- Sample250129-splkza1mdv
- SHA256 16a43aa836bfc334a9c67a4a6cbd25aa461b9332b7dbc5271afd75119c2a3521
Malware Config
Extracted
-
vipkeylogger
-
https://api.telegram.org/bot7631349628:AAFSmXk7lMPXMwRbmU6LXeGJnXqJ_81KAc8/sendMessage?chat_id=7727510436
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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20240508_074644_755730.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20240508_074644_755730.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20240508_074644_755730.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20240508_074644_755730.pdf.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
Halkbank_Ekstre_20240508_074644_755730.pdf.exe.log
memory/764-11-0x0000000000400000-0x0000000000448000-memory.dmp
memory/764-20-0x0000000006A80000-0x0000000006AD0000-memory.dmp
memory/764-19-0x0000000006C00000-0x0000000006DC2000-memory.dmp
memory/764-18-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/764-17-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/764-16-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/764-15-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/1356-5-0x0000000005090000-0x000000000509A000-memory.dmp
memory/1356-9-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/1356-10-0x0000000002900000-0x000000000298E000-memory.dmp
memory/1356-8-0x00000000749CE000-0x00000000749CF000-memory.dmp
memory/1356-7-0x0000000006390000-0x00000000063AE000-memory.dmp
memory/1356-6-0x00000000052E0000-0x000000000537C000-memory.dmp
memory/1356-14-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/1356-0-0x00000000749CE000-0x00000000749CF000-memory.dmp
memory/1356-4-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/1356-3-0x0000000004FE0000-0x0000000005072000-memory.dmp
memory/1356-2-0x00000000054E0000-0x0000000005A84000-memory.dmp
memory/1356-1-0x0000000000540000-0x0000000000626000-memory.dmp