Analysis
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max time kernel
120s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
03-12-2024 14:03
Static task
static1
Behavioral task
behavioral1
Sample
K1_Chit_Form.scr.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
K1_Chit_Form.scr.exe
Resource
win10v2004-20241007-en
General
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Target
K1_Chit_Form.scr.exe
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Size
646KB
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MD5
8ae914653340ef79bbf6c39eaf259e16
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SHA1
7b74c24e74bdb4837ebf448362dd2d261843e833
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SHA256
8bc4c184f461f92d95fd52ca1e1224fb3f3a905b3f8516211f47903a61cea271
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SHA512
e6e91013a45ea11451634c0fd5215a72be9a17c7e0cc3984c7b5a1120fee57cb5796d7884ba11ede95f068960646dc73cd6df44053cd41293d51a09e137b01fb
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SSDEEP
12288:pjBR3Lxt5wW1oLiLud/6w3ZJPAJBom1M8E16YdL7Dd3i6:pdvT96Pd/ex1Mt16YdLl3z
Malware Config
Extracted
vipkeylogger
Signatures
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VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
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Vipkeylogger family
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Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe Powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe Powershell.exe -
Executes dropped EXE 1 IoCs
pid Process 2304 K1_Chit_Form.scr.exe -
Loads dropped DLL 1 IoCs
pid Process 2100 K1_Chit_Form.scr.exe -
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 3 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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 K1_Chit_Form.scr.exe Key opened \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 K1_Chit_Form.scr.exe Key opened \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 K1_Chit_Form.scr.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.
flow ioc 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2100 set thread context of 2304 2100 K1_Chit_Form.scr.exe 32 -
pid Process 2536 Powershell.exe -
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language K1_Chit_Form.scr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language K1_Chit_Form.scr.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2536 Powershell.exe 2304 K1_Chit_Form.scr.exe 2304 K1_Chit_Form.scr.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2536 Powershell.exe Token: SeDebugPrivilege 2304 K1_Chit_Form.scr.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 2100 wrote to memory of 2536 2100 K1_Chit_Form.scr.exe 30 PID 2100 wrote to memory of 2536 2100 K1_Chit_Form.scr.exe 30 PID 2100 wrote to memory of 2536 2100 K1_Chit_Form.scr.exe 30 PID 2100 wrote to memory of 2536 2100 K1_Chit_Form.scr.exe 30 PID 2100 wrote to memory of 2304 2100 K1_Chit_Form.scr.exe 32 PID 2100 wrote to memory of 2304 2100 K1_Chit_Form.scr.exe 32 PID 2100 wrote to memory of 2304 2100 K1_Chit_Form.scr.exe 32 PID 2100 wrote to memory of 2304 2100 K1_Chit_Form.scr.exe 32 PID 2100 wrote to memory of 2304 2100 K1_Chit_Form.scr.exe 32 PID 2100 wrote to memory of 2304 2100 K1_Chit_Form.scr.exe 32 PID 2100 wrote to memory of 2304 2100 K1_Chit_Form.scr.exe 32 PID 2100 wrote to memory of 2304 2100 K1_Chit_Form.scr.exe 32 PID 2100 wrote to memory of 2304 2100 K1_Chit_Form.scr.exe 32 PID 2100 wrote to memory of 2304 2100 K1_Chit_Form.scr.exe 32 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 K1_Chit_Form.scr.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 K1_Chit_Form.scr.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe"C:\Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2100 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'2⤵
- Drops startup file
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2536
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C:\Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe"C:\Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe"2⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2304
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
646KB
MD58ae914653340ef79bbf6c39eaf259e16
SHA17b74c24e74bdb4837ebf448362dd2d261843e833
SHA2568bc4c184f461f92d95fd52ca1e1224fb3f3a905b3f8516211f47903a61cea271
SHA512e6e91013a45ea11451634c0fd5215a72be9a17c7e0cc3984c7b5a1120fee57cb5796d7884ba11ede95f068960646dc73cd6df44053cd41293d51a09e137b01fb