b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b

General

Target

b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
Size

1.8MB
MD5

f58b6b797c23a456405c71f40b411499
SHA1

5886a152dd8e90bfd8339e3a5042e6f8206f0017
SHA256

b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b
SHA512

d789f5ee6696a634bfec8a26a027c57c013fc50f6cb661c4c56ebfe558d48dd2b11315c60d755fa129d754bf08319861f6195091ff1f64661afe26eb53a7a19b

Score

9^/10

evasion 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:

b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exeoobeldr.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	oobeldr.exe

Executes dropped EXE 1 IoCs

Processes:

oobeldr.exe

pid process

384 oobeldr.exe

pid	process
384	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:

b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exeoobeldr.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	oobeldr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	oobeldr.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exeoobeldr.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	oobeldr.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

Processes:

b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exeoobeldr.exe

pid	process
2344	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
2344	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
384	oobeldr.exe
384	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

4352 schtasks.exe
4424 schtasks.exe

pid	process
4352	schtasks.exe
4424	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exeoobeldr.exe

pid	process
2344	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
2344	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
2344	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
2344	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
384	oobeldr.exe
384	oobeldr.exe
384	oobeldr.exe
384	oobeldr.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exeoobeldr.exe

description	pid	process	target process
PID 2344 wrote to memory of 4352	2344	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe	schtasks.exe
PID 2344 wrote to memory of 4352	2344	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe	schtasks.exe
PID 2344 wrote to memory of 4352	2344	b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe	schtasks.exe
PID 384 wrote to memory of 4424	384	oobeldr.exe	schtasks.exe
PID 384 wrote to memory of 4424	384	oobeldr.exe	schtasks.exe
PID 384 wrote to memory of 4424	384	oobeldr.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.exe
"C:\Users\Admin\AppData\Local\Temp\b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b.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:2344

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:4352

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:384

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:4424

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
1.8MB

MD5
f58b6b797c23a456405c71f40b411499

SHA1
5886a152dd8e90bfd8339e3a5042e6f8206f0017

SHA256
b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b

SHA512
d789f5ee6696a634bfec8a26a027c57c013fc50f6cb661c4c56ebfe558d48dd2b11315c60d755fa129d754bf08319861f6195091ff1f64661afe26eb53a7a19b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
Filesize
1.8MB

MD5
f58b6b797c23a456405c71f40b411499

SHA1
5886a152dd8e90bfd8339e3a5042e6f8206f0017

SHA256
b4b7b1b95b9bb1815f102bbbdc23f77b0664280d14f55a16eb5bc4652fba903b

SHA512
d789f5ee6696a634bfec8a26a027c57c013fc50f6cb661c4c56ebfe558d48dd2b11315c60d755fa129d754bf08319861f6195091ff1f64661afe26eb53a7a19b

Download Submit
memory/384-156-0x0000000000FB0000-0x00000000012CF000-memory.dmp

Filesize
3.1MB

Download
memory/384-145-0x0000000001370000-0x00000000013B4000-memory.dmp

Filesize
272KB

Download
memory/384-153-0x0000000000FB0000-0x00000000012CF000-memory.dmp

Filesize
3.1MB

Download
memory/384-152-0x0000000077A80000-0x0000000077C23000-memory.dmp

Filesize
1.6MB

Download
memory/384-151-0x0000000000FB0000-0x00000000012CF000-memory.dmp

Filesize
3.1MB

Download
memory/384-149-0x0000000000FB1000-0x0000000000FB3000-memory.dmp

Filesize
8KB

Download
memory/384-155-0x0000000000FB0000-0x00000000012CF000-memory.dmp

Filesize
3.1MB

Download
memory/384-147-0x0000000000FB0000-0x00000000012CF000-memory.dmp

Filesize
3.1MB

Download
memory/384-144-0x0000000000FB0000-0x00000000012CF000-memory.dmp

Filesize
3.1MB

Download
memory/384-146-0x0000000000FB0000-0x00000000012CF000-memory.dmp

Filesize
3.1MB

Download
memory/384-154-0x0000000001370000-0x00000000013B4000-memory.dmp

Filesize
272KB

Download
memory/2344-133-0x0000000000901000-0x0000000000903000-memory.dmp

Filesize
8KB

Download
memory/2344-140-0x0000000000900000-0x0000000000C1F000-memory.dmp

Filesize
3.1MB

Download
memory/2344-136-0x0000000000900000-0x0000000000C1F000-memory.dmp

Filesize
3.1MB

Download
memory/2344-131-0x0000000000900000-0x0000000000C1F000-memory.dmp

Filesize
3.1MB

Download
memory/2344-139-0x0000000077A80000-0x0000000077C23000-memory.dmp

Filesize
1.6MB

Download
memory/2344-132-0x0000000000D20000-0x0000000000D64000-memory.dmp

Filesize
272KB

Download
memory/2344-137-0x0000000000900000-0x0000000000C1F000-memory.dmp

Filesize
3.1MB

Download
memory/2344-141-0x0000000077A80000-0x0000000077C23000-memory.dmp

Filesize
1.6MB

Download
memory/2344-135-0x0000000000901000-0x0000000000903000-memory.dmp

Filesize
8KB

Download
memory/2344-130-0x0000000000900000-0x0000000000C1F000-memory.dmp

Filesize
3.1MB

Download
memory/2344-134-0x0000000000900000-0x0000000000C1F000-memory.dmp

Filesize
3.1MB

Download
memory/4352-138-0x0000000000000000-mapping.dmp

Download
memory/4424-150-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads