snakekeylogger | 12d47f62ed1f5d60193a3a3099873286365c15dc6bf9df17aa250e1f7660c36c

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	pSRrNpLv0bS37RA.exe

Executes dropped EXE 1 IoCs

pid	Process
4128	pSRrNpLv0bS37RA.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.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
36	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4128 set thread context of 4324	4128	pSRrNpLv0bS37RA.exe	105

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pSRrNpLv0bS37RA.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

System Information Discovery

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

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.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
2228	schtasks.exe

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	20	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
1548	WINWORD.EXE
1548	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4128	pSRrNpLv0bS37RA.exe
4128	pSRrNpLv0bS37RA.exe
724	powershell.exe
4324	vbc.exe
724	powershell.exe
4324	vbc.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	724	powershell.exe
Token: SeDebugPrivilege	4128	pSRrNpLv0bS37RA.exe
Token: SeDebugPrivilege	4324	vbc.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
1548	WINWORD.EXE
1548	WINWORD.EXE
1548	WINWORD.EXE
1548	WINWORD.EXE
1548	WINWORD.EXE
1548	WINWORD.EXE
1548	WINWORD.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 4128	1548	WINWORD.EXE	93
PID 1548 wrote to memory of 4128	1548	WINWORD.EXE	93
PID 1548 wrote to memory of 4128	1548	WINWORD.EXE	93
PID 4128 wrote to memory of 724	4128	pSRrNpLv0bS37RA.exe	100
PID 4128 wrote to memory of 724	4128	pSRrNpLv0bS37RA.exe	100
PID 4128 wrote to memory of 724	4128	pSRrNpLv0bS37RA.exe	100
PID 4128 wrote to memory of 2228	4128	pSRrNpLv0bS37RA.exe	102
PID 4128 wrote to memory of 2228	4128	pSRrNpLv0bS37RA.exe	102
PID 4128 wrote to memory of 2228	4128	pSRrNpLv0bS37RA.exe	102
PID 4128 wrote to memory of 1452	4128	pSRrNpLv0bS37RA.exe	104
PID 4128 wrote to memory of 1452	4128	pSRrNpLv0bS37RA.exe	104
PID 4128 wrote to memory of 1452	4128	pSRrNpLv0bS37RA.exe	104
PID 4128 wrote to memory of 4324	4128	pSRrNpLv0bS37RA.exe	105
PID 4128 wrote to memory of 4324	4128	pSRrNpLv0bS37RA.exe	105
PID 4128 wrote to memory of 4324	4128	pSRrNpLv0bS37RA.exe	105
PID 4128 wrote to memory of 4324	4128	pSRrNpLv0bS37RA.exe	105
PID 4128 wrote to memory of 4324	4128	pSRrNpLv0bS37RA.exe	105
PID 4128 wrote to memory of 4324	4128	pSRrNpLv0bS37RA.exe	105
PID 4128 wrote to memory of 4324	4128	pSRrNpLv0bS37RA.exe	105
PID 4128 wrote to memory of 4324	4128	pSRrNpLv0bS37RA.exe	105

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\12d47f62ed1f5d60193a3a3099873286365c15dc6bf9df17aa250e1f7660c36c.docm" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1548
- C:\ProgramData\pSRrNpLv0bS37RA.exe
  C:\ProgramData\pSRrNpLv0bS37RA.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4128
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Vzvbbx.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:724
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\Vzvbbx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2CA.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2228
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    PID:1452
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - Accesses Microsoft Outlook profiles
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:4324

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

Discovery

Query Registry

System Information Discovery