vipkeylogger | 65bab37bd3f4aafb41808b286af3e32ab794420c0ed48b880160556e96c0d107

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	regasms.exe

Executes dropped EXE 2 IoCs

pid	Process
3336	regasms.exe
3168	regasms.exe

Loads dropped DLL 2 IoCs

pid	Process
4968	EXCEL.EXE
4968	EXCEL.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.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regasms.exe
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regasms.exe
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regasms.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
54	reallyfreegeoip.org
55	reallyfreegeoip.org
52	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3336 set thread context of 3168	3336	regasms.exe	101

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
3992	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4968	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
3336	regasms.exe
3336	regasms.exe
3336	regasms.exe
3336	regasms.exe
3336	regasms.exe
3336	regasms.exe
3336	regasms.exe
3336	regasms.exe
3336	regasms.exe
3336	regasms.exe
3336	regasms.exe
2164	powershell.exe
2164	powershell.exe
4552	powershell.exe
3168	regasms.exe
4552	powershell.exe
3168	regasms.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3168	regasms.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3336	regasms.exe
Token: SeDebugPrivilege	2164	powershell.exe
Token: SeDebugPrivilege	4552	powershell.exe
Token: SeDebugPrivilege	3168	regasms.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4968	EXCEL.EXE

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
4968	EXCEL.EXE
4968	EXCEL.EXE
4968	EXCEL.EXE
4968	EXCEL.EXE
4968	EXCEL.EXE
4968	EXCEL.EXE
3168	regasms.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4968 wrote to memory of 3336	4968	EXCEL.EXE	86
PID 4968 wrote to memory of 3336	4968	EXCEL.EXE	86
PID 3336 wrote to memory of 4552	3336	regasms.exe	95
PID 3336 wrote to memory of 4552	3336	regasms.exe	95
PID 3336 wrote to memory of 2164	3336	regasms.exe	96
PID 3336 wrote to memory of 2164	3336	regasms.exe	96
PID 3336 wrote to memory of 3992	3336	regasms.exe	98
PID 3336 wrote to memory of 3992	3336	regasms.exe	98
PID 3336 wrote to memory of 3168	3336	regasms.exe	101
PID 3336 wrote to memory of 3168	3336	regasms.exe	101
PID 3336 wrote to memory of 3168	3336	regasms.exe	101
PID 3336 wrote to memory of 3168	3336	regasms.exe	101
PID 3336 wrote to memory of 3168	3336	regasms.exe	101
PID 3336 wrote to memory of 3168	3336	regasms.exe	101

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regasms.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regasms.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\RFQ_5729400129.xll"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4968
- C:\Users\Admin\AppData\Roaming\regasms.exe
  C:\Users\Admin\AppData\Roaming\regasms.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3336
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\regasms.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4552
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ghwNVGxqmf.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2164
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ghwNVGxqmf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF5AA.tmp"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3992
- - C:\Users\Admin\AppData\Roaming\regasms.exe
    C:\Users\Admin\AppData\Roaming\regasms.exe
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - outlook_office_path
    - outlook_win_path
    PID:3168

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

4