539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a

General

Target

539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe
Size

1.8MB
MD5

e9e03d8902c2c9c8f4b112817355a2ea
SHA1

1af7ab72de9634e0d7b25cc010fc116729283bf4
SHA256

539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a
SHA512

c433d34fc892be3177d50d666e61e0a09c22973ba6bec9e99b15e1fdadc1e9630a6454854dd5b18f4488412ecff2715cde4667fbeda6eab58e63433f694a34d2
SSDEEP

49152:AiSzCD+K95aLs7zeqLTVtXtHFIDP8EehiM8qZA:AiSzCD+K95aUeqFtXtHwEEehig

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	oobeldr.exe

Executes dropped EXE 1 IoCs

pid	Process
3532	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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	oobeldr.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
4912	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe
4912	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe
3532	oobeldr.exe
3532	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

pid	Process
1056	schtasks.exe
632	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4912	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe
4912	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe
4912	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe
4912	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe
3532	oobeldr.exe
3532	oobeldr.exe
3532	oobeldr.exe
3532	oobeldr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 1056	4912	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe	84
PID 4912 wrote to memory of 1056	4912	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe	84
PID 4912 wrote to memory of 1056	4912	539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe	84
PID 3532 wrote to memory of 632	3532	oobeldr.exe	95
PID 3532 wrote to memory of 632	3532	oobeldr.exe	95
PID 3532 wrote to memory of 632	3532	oobeldr.exe	95

C:\Users\Admin\AppData\Local\Temp\539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.exe
"C:\Users\Admin\AppData\Local\Temp\539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a.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:4912
- 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:1056

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:3532
- 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:632

Network

MITRE ATT&CK Enterprise 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

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
1.8MB

MD5
e9e03d8902c2c9c8f4b112817355a2ea

SHA1
1af7ab72de9634e0d7b25cc010fc116729283bf4

SHA256
539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a

SHA512
c433d34fc892be3177d50d666e61e0a09c22973ba6bec9e99b15e1fdadc1e9630a6454854dd5b18f4488412ecff2715cde4667fbeda6eab58e63433f694a34d2

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

Filesize
1.8MB

MD5
e9e03d8902c2c9c8f4b112817355a2ea

SHA1
1af7ab72de9634e0d7b25cc010fc116729283bf4

SHA256
539db95f1088e455db980c24041f8ff86b590a25699d9e02315af442857e719a

SHA512
c433d34fc892be3177d50d666e61e0a09c22973ba6bec9e99b15e1fdadc1e9630a6454854dd5b18f4488412ecff2715cde4667fbeda6eab58e63433f694a34d2

Download Submit
memory/3532-147-0x0000000000D51000-0x0000000000D53000-memory.dmp

Filesize
8KB

Download
memory/3532-150-0x0000000000D50000-0x000000000106F000-memory.dmp

Filesize
3.1MB

Download
memory/3532-154-0x0000000000D50000-0x000000000106F000-memory.dmp

Filesize
3.1MB

Download
memory/3532-153-0x0000000002990000-0x00000000029D4000-memory.dmp

Filesize
272KB

Download
memory/3532-152-0x0000000000D50000-0x000000000106F000-memory.dmp

Filesize
3.1MB

Download
memory/3532-151-0x0000000077290000-0x0000000077433000-memory.dmp

Filesize
1.6MB

Download
memory/3532-149-0x0000000002990000-0x00000000029D4000-memory.dmp

Filesize
272KB

Download
memory/3532-145-0x0000000000D50000-0x000000000106F000-memory.dmp

Filesize
3.1MB

Download
memory/3532-144-0x0000000000D50000-0x000000000106F000-memory.dmp

Filesize
3.1MB

Download
memory/4912-134-0x0000000003110000-0x0000000003154000-memory.dmp

Filesize
272KB

Download
memory/4912-133-0x0000000000B50000-0x0000000000E6F000-memory.dmp

Filesize
3.1MB

Download
memory/4912-132-0x0000000000B50000-0x0000000000E6F000-memory.dmp

Filesize
3.1MB

Download
memory/4912-135-0x0000000000B50000-0x0000000000E6F000-memory.dmp

Filesize
3.1MB

Download
memory/4912-137-0x0000000000B51000-0x0000000000B53000-memory.dmp

Filesize
8KB

Download
memory/4912-141-0x0000000077290000-0x0000000077433000-memory.dmp

Filesize
1.6MB

Download
memory/4912-140-0x0000000000B50000-0x0000000000E6F000-memory.dmp

Filesize
3.1MB

Download
memory/4912-136-0x0000000077290000-0x0000000077433000-memory.dmp

Filesize
1.6MB

Download
memory/4912-138-0x0000000000B51000-0x0000000000B53000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads