a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7

General

Target

a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe
Size

1.8MB
MD5

244d9c001434b59168d51d2349a87d1a
SHA1

a5baff220adddb98da11715830fea41e729c87bf
SHA256

a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7
SHA512

a466b39d1ec75cad12f1eef7ce65f8041eb3febae05a08a73d53b113cdcc54a6a951c4975164bb13c6d2b0fbcdd91c972c129c9b2ea67d3a2adc459b23506c35
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__	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	oobeldr.exe

Executes dropped EXE 1 IoCs

pid	Process
708	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	oobeldr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	oobeldr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.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	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
1580	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe
1580	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe
708	oobeldr.exe
708	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
4108	schtasks.exe
1204	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1580	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe
1580	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe
1580	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe
1580	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe
708	oobeldr.exe
708	oobeldr.exe
708	oobeldr.exe
708	oobeldr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 4108	1580	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe	82
PID 1580 wrote to memory of 4108	1580	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe	82
PID 1580 wrote to memory of 4108	1580	a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe	82
PID 708 wrote to memory of 1204	708	oobeldr.exe	85
PID 708 wrote to memory of 1204	708	oobeldr.exe	85
PID 708 wrote to memory of 1204	708	oobeldr.exe	85

C:\Users\Admin\AppData\Local\Temp\a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.exe
"C:\Users\Admin\AppData\Local\Temp\a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7.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:1580
- 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:4108

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:708
- 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:1204

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
244d9c001434b59168d51d2349a87d1a

SHA1
a5baff220adddb98da11715830fea41e729c87bf

SHA256
a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7

SHA512
a466b39d1ec75cad12f1eef7ce65f8041eb3febae05a08a73d53b113cdcc54a6a951c4975164bb13c6d2b0fbcdd91c972c129c9b2ea67d3a2adc459b23506c35

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

Filesize
1.8MB

MD5
244d9c001434b59168d51d2349a87d1a

SHA1
a5baff220adddb98da11715830fea41e729c87bf

SHA256
a5ab400e5f2bf583acdf409e25ec436752385f3ff9ed5953302ef3f0a0b5c5b7

SHA512
a466b39d1ec75cad12f1eef7ce65f8041eb3febae05a08a73d53b113cdcc54a6a951c4975164bb13c6d2b0fbcdd91c972c129c9b2ea67d3a2adc459b23506c35

Download Submit
memory/708-154-0x0000000000E30000-0x000000000114F000-memory.dmp

Filesize
3.1MB

Download
memory/708-153-0x0000000002BD0000-0x0000000002C14000-memory.dmp

Filesize
272KB

Download
memory/708-152-0x0000000000E30000-0x000000000114F000-memory.dmp

Filesize
3.1MB

Download
memory/708-151-0x0000000077880000-0x0000000077A23000-memory.dmp

Filesize
1.6MB

Download
memory/708-150-0x0000000000E30000-0x000000000114F000-memory.dmp

Filesize
3.1MB

Download
memory/708-148-0x0000000000E31000-0x0000000000E33000-memory.dmp

Filesize
8KB

Download
memory/708-146-0x0000000000E30000-0x000000000114F000-memory.dmp

Filesize
3.1MB

Download
memory/708-145-0x0000000002BD0000-0x0000000002C14000-memory.dmp

Filesize
272KB

Download
memory/708-144-0x0000000000E30000-0x000000000114F000-memory.dmp

Filesize
3.1MB

Download
memory/1204-149-0x0000000000000000-mapping.dmp

Download
memory/1580-141-0x0000000077880000-0x0000000077A23000-memory.dmp

Filesize
1.6MB

Download
memory/1580-140-0x00000000005A0000-0x00000000005E4000-memory.dmp

Filesize
272KB

Download
memory/1580-139-0x0000000000250000-0x000000000056F000-memory.dmp

Filesize
3.1MB

Download
memory/1580-132-0x0000000000250000-0x000000000056F000-memory.dmp

Filesize
3.1MB

Download
memory/1580-137-0x0000000000251000-0x0000000000253000-memory.dmp

Filesize
8KB

Download
memory/1580-136-0x0000000000251000-0x0000000000253000-memory.dmp

Filesize
8KB

Download
memory/1580-135-0x0000000000250000-0x000000000056F000-memory.dmp

Filesize
3.1MB

Download
memory/1580-134-0x0000000000250000-0x000000000056F000-memory.dmp

Filesize
3.1MB

Download
memory/1580-133-0x00000000005A0000-0x00000000005E4000-memory.dmp

Filesize
272KB

Download
memory/4108-138-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads