f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e

General

Target

f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe
Size

5.2MB
MD5

bcbb46256a4af7b5509b2924be449bc3
SHA1

1692917c482954c43a5b0127fc1b4c939fe7cbd2
SHA256

f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e
SHA512

4c87f101ffeaf0a6692e2adb98e83713a68a5aa8bfe83b5c6ef19b787631eb19b707c4cd8935e8eb0770154dd0e92389c61c657c36fc2d6ba62e903b2bb6b450
SSDEEP

98304:z5E5IoBr0SdozMevlC5J0xTSdR7QISNVVhiiXk04QVKLg+5yG:z099ozMedC56SdR7QISNdk04JLp5yG

Score

9^/10

evasion themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exeoobeldr.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	oobeldr.exe

Executes dropped EXE 1 IoCs

Processes:

oobeldr.exe

pid process

4444 oobeldr.exe

pid	process
4444	oobeldr.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

oobeldr.exef7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	oobeldr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	oobeldr.exe

Themida packer 11 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/208-132-0x0000000000FD0000-0x0000000001B72000-memory.dmp	themida
behavioral1/memory/208-135-0x0000000000FD0000-0x0000000001B72000-memory.dmp	themida
behavioral1/memory/208-136-0x0000000000FD0000-0x0000000001B72000-memory.dmp	themida
behavioral1/memory/208-138-0x0000000000FD0000-0x0000000001B72000-memory.dmp	themida
behavioral1/memory/208-140-0x0000000000FD0000-0x0000000001B72000-memory.dmp	themida
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe	themida
behavioral1/memory/4444-143-0x0000000000470000-0x0000000001012000-memory.dmp	themida
behavioral1/memory/4444-146-0x0000000000470000-0x0000000001012000-memory.dmp	themida
behavioral1/memory/4444-147-0x0000000000470000-0x0000000001012000-memory.dmp	themida
behavioral1/memory/4444-149-0x0000000000470000-0x0000000001012000-memory.dmp	themida
behavioral1/memory/4444-151-0x0000000000470000-0x0000000001012000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exeoobeldr.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	oobeldr.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exeoobeldr.exe

pid process

208 f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe
4444 oobeldr.exe
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
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1268 schtasks.exe
2660 schtasks.exe

pid	process
1268	schtasks.exe
2660	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exeoobeldr.exe

pid	process
208	f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe
208	f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe
4444	oobeldr.exe
4444	oobeldr.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exeoobeldr.exe

description	pid	process	target process
PID 208 wrote to memory of 1268	208	f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe	schtasks.exe
PID 208 wrote to memory of 1268	208	f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe	schtasks.exe
PID 208 wrote to memory of 1268	208	f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe	schtasks.exe
PID 4444 wrote to memory of 2660	4444	oobeldr.exe	schtasks.exe
PID 4444 wrote to memory of 2660	4444	oobeldr.exe	schtasks.exe
PID 4444 wrote to memory of 2660	4444	oobeldr.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.exe
"C:\Users\Admin\AppData\Local\Temp\f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e.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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:208

C:\Windows\SysWOW64\schtasks.exe
/C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
2⤵
- Creates scheduled task(s)
PID:1268

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4444

C:\Windows\SysWOW64\schtasks.exe
/C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
2⤵
- Creates scheduled task(s)
PID:2660

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
Filesize
5.2MB

MD5
bcbb46256a4af7b5509b2924be449bc3

SHA1
1692917c482954c43a5b0127fc1b4c939fe7cbd2

SHA256
f7bed46fe83995d9a4eff5e9bf41c26e0721bcced7ef05a47284bb59f44b274e

SHA512
4c87f101ffeaf0a6692e2adb98e83713a68a5aa8bfe83b5c6ef19b787631eb19b707c4cd8935e8eb0770154dd0e92389c61c657c36fc2d6ba62e903b2bb6b450

Download Submit
memory/208-138-0x0000000000FD0000-0x0000000001B72000-memory.dmp

Filesize
11.6MB

Download
memory/208-141-0x0000000077730000-0x00000000778D3000-memory.dmp

Filesize
1.6MB

Download
memory/208-136-0x0000000000FD0000-0x0000000001B72000-memory.dmp

Filesize
11.6MB

Download
memory/208-132-0x0000000000FD0000-0x0000000001B72000-memory.dmp

Filesize
11.6MB

Download
memory/208-137-0x0000000000FD1000-0x0000000000FD3000-memory.dmp

Filesize
8KB

Download
memory/208-140-0x0000000000FD0000-0x0000000001B72000-memory.dmp

Filesize
11.6MB

Download
memory/208-135-0x0000000000FD0000-0x0000000001B72000-memory.dmp

Filesize
11.6MB

Download
memory/208-134-0x0000000000FD1000-0x0000000000FD3000-memory.dmp

Filesize
8KB

Download
memory/208-133-0x0000000077730000-0x00000000778D3000-memory.dmp

Filesize
1.6MB

Download
memory/1268-139-0x0000000000000000-mapping.dmp

Download
memory/2660-150-0x0000000000000000-mapping.dmp

Download
memory/4444-152-0x0000000077730000-0x00000000778D3000-memory.dmp

Filesize
1.6MB

Download
memory/4444-146-0x0000000000470000-0x0000000001012000-memory.dmp

Filesize
11.6MB

Download
memory/4444-147-0x0000000000470000-0x0000000001012000-memory.dmp

Filesize
11.6MB

Download
memory/4444-148-0x0000000000471000-0x0000000000473000-memory.dmp

Filesize
8KB

Download
memory/4444-149-0x0000000000470000-0x0000000001012000-memory.dmp

Filesize
11.6MB

Download
memory/4444-143-0x0000000000470000-0x0000000001012000-memory.dmp

Filesize
11.6MB

Download
memory/4444-151-0x0000000000470000-0x0000000001012000-memory.dmp

Filesize
11.6MB

Download
memory/4444-144-0x0000000077730000-0x00000000778D3000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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