oski | 49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47

System Information Discovery

Processes:

49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.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 14 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/2488-130-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-131-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-132-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-133-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-134-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-136-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-137-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-138-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-139-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-140-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-141-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-142-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-143-0x00000000002F0000-0x000000000081D000-memory.dmp	themida
behavioral2/memory/2488-144-0x00000000002F0000-0x000000000081D000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

Processes:

49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.exe

Drops file in System32 directory 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{CE057EC7-164F-4CF3-971E-8CB126A2E77F}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{8764170A-055E-4824-97F8-A05D18371169}.catalogItem	svchost.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.exe

pid process

2488 49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4808 2488 WerFault.exe 49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.exe

pid	process
2488	49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.exe

pid	pid_target	process	target process
4808	2488	WerFault.exe	49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.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

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

C:\Users\Admin\AppData\Local\Temp\49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.exe
"C:\Users\Admin\AppData\Local\Temp\49255a7e201aebbd0dfd7e9384ada9d184f2fcdacbb054a897be53833b8a2f47.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:2488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2488 -s 1348
2⤵
- Program crash
PID:4808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2488 -ip 2488
1⤵
PID:3816

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4328

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

4

Virtualization/Sandbox Evasion

T1497

System Information Discovery

4

Lateral Movement

Collection

Data from Local System