recordbreaker | 71b350eea45226b852a9eb55e9189db53f4dedc00a330da768930f8ccf1d66f9

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Setup.exe

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2200	J4c40642.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

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

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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	Setup.exe

Loads dropped DLL 3 IoCs

pid	Process
5056	Setup.exe
5056	Setup.exe
5056	Setup.exe

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
T1081

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/5056-130-0x0000000000610000-0x0000000000E85000-memory.dmp	themida
behavioral2/memory/5056-132-0x0000000000610000-0x0000000000E85000-memory.dmp	themida
behavioral2/memory/5056-133-0x0000000000610000-0x0000000000E85000-memory.dmp	themida
behavioral2/memory/5056-137-0x0000000000610000-0x0000000000E85000-memory.dmp	themida
behavioral2/memory/5056-142-0x0000000000610000-0x0000000000E85000-memory.dmp	themida

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Setup.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
5056	Setup.exe
2200	J4c40642.exe
2200	J4c40642.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4300	2200	WerFault.exe	88

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

pid	Process
3764	schtasks.exe
4724	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5056	Setup.exe
5056	Setup.exe
2200	J4c40642.exe
2200	J4c40642.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5056 wrote to memory of 2200	5056	Setup.exe	88
PID 5056 wrote to memory of 2200	5056	Setup.exe	88
PID 5056 wrote to memory of 2200	5056	Setup.exe	88
PID 2200 wrote to memory of 3764	2200	J4c40642.exe	89
PID 2200 wrote to memory of 3764	2200	J4c40642.exe	89
PID 2200 wrote to memory of 3764	2200	J4c40642.exe	89
PID 2200 wrote to memory of 3900	2200	J4c40642.exe	91
PID 2200 wrote to memory of 3900	2200	J4c40642.exe	91
PID 2200 wrote to memory of 3900	2200	J4c40642.exe	91
PID 2200 wrote to memory of 4724	2200	J4c40642.exe	93
PID 2200 wrote to memory of 4724	2200	J4c40642.exe	93
PID 2200 wrote to memory of 4724	2200	J4c40642.exe	93

C:\Users\Admin\AppData\Local\Temp\Main_Setup_Pass_1234\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\Main_Setup_Pass_1234\Setup.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Users\Admin\AppData\Local\Temp\J4c40642.exe
  "C:\Users\Admin\AppData\Local\Temp\J4c40642.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2200
- - C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /sc minute /mo 5 /tn "NodeJSEnvironmentUpdateTask" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\NodeDisplay.Container.exe"
    3⤵
    - Creates scheduled task(s)
    PID:3764
- - C:\Windows\SysWOW64\schtasks.exe
    /C /Query /XML /TN "NodeJSEnvironmentUpdateTask"
    3⤵
    PID:3900
- - C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /tn "NodeJSEnvironmentUpdateTask" /XML "C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\hC5zF4xW4pD6iF6a.xml"
    3⤵
    - Creates scheduled task(s)
    PID:4724
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 472
    3⤵
    - Program crash
    PID:4300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 2200 -ip 2200
1⤵
PID:4660

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

System Information Discovery