hawkeye | 9704d0420f573639eed3b1765ea5f212ba4c3129333f2efc167a1c0724935419

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	Invoice.pdf.scr

NirSoft MailPassView 4 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2888-10-0x0000000000400000-0x0000000000488000-memory.dmp	MailPassView
behavioral2/memory/884-19-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView
behavioral2/memory/884-21-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView
behavioral2/memory/884-24-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 4 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2888-10-0x0000000000400000-0x0000000000488000-memory.dmp	WebBrowserPassView
behavioral2/memory/4136-25-0x0000000000400000-0x0000000000458000-memory.dmp	WebBrowserPassView
behavioral2/memory/4136-26-0x0000000000400000-0x0000000000458000-memory.dmp	WebBrowserPassView
behavioral2/memory/4136-33-0x0000000000400000-0x0000000000458000-memory.dmp	WebBrowserPassView

Nirsoft 7 IoCs

resource	yara_rule
behavioral2/memory/2888-10-0x0000000000400000-0x0000000000488000-memory.dmp	Nirsoft
behavioral2/memory/884-19-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/884-21-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/884-24-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/4136-25-0x0000000000400000-0x0000000000458000-memory.dmp	Nirsoft
behavioral2/memory/4136-26-0x0000000000400000-0x0000000000458000-memory.dmp	Nirsoft
behavioral2/memory/4136-33-0x0000000000400000-0x0000000000458000-memory.dmp	Nirsoft

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	Invoice.pdf.scr

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Invoice.pdf.scr
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Invoice.pdf.scr

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	Invoice.pdf.scr

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Looks up external IP address via web service 2 IoCs

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

flow	ioc
50	whatismyipaddress.com
48	whatismyipaddress.com

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Invoice.pdf.scr
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Invoice.pdf.scr

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3164 set thread context of 2888	3164	Invoice.pdf.scr	103
PID 2888 set thread context of 884	2888	MSBuild.exe	104
PID 2888 set thread context of 4136	2888	MSBuild.exe	105

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

pid	Process
2404	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3164	Invoice.pdf.scr
4136	vbc.exe
4136	vbc.exe
2888	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3164	Invoice.pdf.scr
Token: SeDebugPrivilege	2888	MSBuild.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2888	MSBuild.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 3164 wrote to memory of 2404	3164	Invoice.pdf.scr	101
PID 3164 wrote to memory of 2404	3164	Invoice.pdf.scr	101
PID 3164 wrote to memory of 2404	3164	Invoice.pdf.scr	101
PID 3164 wrote to memory of 2888	3164	Invoice.pdf.scr	103
PID 3164 wrote to memory of 2888	3164	Invoice.pdf.scr	103
PID 3164 wrote to memory of 2888	3164	Invoice.pdf.scr	103
PID 3164 wrote to memory of 2888	3164	Invoice.pdf.scr	103
PID 3164 wrote to memory of 2888	3164	Invoice.pdf.scr	103
PID 3164 wrote to memory of 2888	3164	Invoice.pdf.scr	103
PID 3164 wrote to memory of 2888	3164	Invoice.pdf.scr	103
PID 3164 wrote to memory of 2888	3164	Invoice.pdf.scr	103
PID 2888 wrote to memory of 884	2888	MSBuild.exe	104
PID 2888 wrote to memory of 884	2888	MSBuild.exe	104
PID 2888 wrote to memory of 884	2888	MSBuild.exe	104
PID 2888 wrote to memory of 884	2888	MSBuild.exe	104
PID 2888 wrote to memory of 884	2888	MSBuild.exe	104
PID 2888 wrote to memory of 884	2888	MSBuild.exe	104
PID 2888 wrote to memory of 884	2888	MSBuild.exe	104
PID 2888 wrote to memory of 884	2888	MSBuild.exe	104
PID 2888 wrote to memory of 884	2888	MSBuild.exe	104
PID 2888 wrote to memory of 4136	2888	MSBuild.exe	105
PID 2888 wrote to memory of 4136	2888	MSBuild.exe	105
PID 2888 wrote to memory of 4136	2888	MSBuild.exe	105
PID 2888 wrote to memory of 4136	2888	MSBuild.exe	105
PID 2888 wrote to memory of 4136	2888	MSBuild.exe	105
PID 2888 wrote to memory of 4136	2888	MSBuild.exe	105
PID 2888 wrote to memory of 4136	2888	MSBuild.exe	105
PID 2888 wrote to memory of 4136	2888	MSBuild.exe	105
PID 2888 wrote to memory of 4136	2888	MSBuild.exe	105

C:\Users\Admin\AppData\Local\Temp\Invoice.pdf.scr
"C:\Users\Admin\AppData\Local\Temp\Invoice.pdf.scr" /S
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3164
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gzmKwsNOg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp71D0.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2404
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2888
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:884
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Scripting

T1064

Persistence

Scheduled Task/Job

Privilege Escalation

Scheduled Task/Job

Defense Evasion

Scripting

T1064

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion