matiex | 1f7d006c51d203f691d67a56b1f3b7cd80d33e96b36b359d48cdd837d281fc93

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	MxELZ3saa9aQNufK.exe

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	MxELZ3saa9aQNufK.exe

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

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	MxELZ3saa9aQNufK.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	MxELZ3saa9aQNufK.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MxELZ3saa9aQNufK.exe
Key opened	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MxELZ3saa9aQNufK.exe
Key opened	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MxELZ3saa9aQNufK.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
64	freegeoip.app
65	freegeoip.app
49	checkip.dyndns.org

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

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	MxELZ3saa9aQNufK.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	MxELZ3saa9aQNufK.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1468 set thread context of 220	1468	MxELZ3saa9aQNufK.exe	99

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2312	220	WerFault.exe	99

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1468	MxELZ3saa9aQNufK.exe
1468	MxELZ3saa9aQNufK.exe
1468	MxELZ3saa9aQNufK.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1468	MxELZ3saa9aQNufK.exe
Token: SeDebugPrivilege	220	MxELZ3saa9aQNufK.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1468 wrote to memory of 220	1468	MxELZ3saa9aQNufK.exe	99
PID 1468 wrote to memory of 220	1468	MxELZ3saa9aQNufK.exe	99
PID 1468 wrote to memory of 220	1468	MxELZ3saa9aQNufK.exe	99
PID 1468 wrote to memory of 220	1468	MxELZ3saa9aQNufK.exe	99
PID 1468 wrote to memory of 220	1468	MxELZ3saa9aQNufK.exe	99
PID 1468 wrote to memory of 220	1468	MxELZ3saa9aQNufK.exe	99
PID 1468 wrote to memory of 220	1468	MxELZ3saa9aQNufK.exe	99
PID 1468 wrote to memory of 220	1468	MxELZ3saa9aQNufK.exe	99

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MxELZ3saa9aQNufK.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MxELZ3saa9aQNufK.exe

C:\Users\Admin\AppData\Local\Temp\MxELZ3saa9aQNufK.exe
"C:\Users\Admin\AppData\Local\Temp\MxELZ3saa9aQNufK.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1468
- C:\Users\Admin\AppData\Local\Temp\MxELZ3saa9aQNufK.exe
  "C:\Users\Admin\AppData\Local\Temp\MxELZ3saa9aQNufK.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:220
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 220 -s 2020
    3⤵
    - Program crash
    PID:2312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 220 -ip 220
1⤵
PID:3476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

T1082

Virtualization/Sandbox Evasion