995ee8dd588a42770bc31ccfd09d7dc6d5b37896f5d8f0ffafe95e3a8aa088bb

Analysis

max time kernel
1s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
27-03-2023 14:02

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General

Target

NeptnExternalFree.exe
Size

3.5MB
MD5

c99af5bbdb0b7696677840071616a258
SHA1

e7b768d41758cbf69c5a0c04faea4401059549a5
SHA256

995ee8dd588a42770bc31ccfd09d7dc6d5b37896f5d8f0ffafe95e3a8aa088bb
SHA512

56874951847161810250540fb34dd671556a258236078c159c55fb3f1351ae97e817ef23b06ca62f07e73a2fc79baf678f0bc396718e3c3bb21d3842c964fdef
SSDEEP

98304:5Wi11EuYWF9XDGLjgc0/mBZarnsEpjW18Hf5F1Gt:5Wq3YWbGIc0ggZW0RFc

Score

9^/10

evasion themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

NeptnExternalFree.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ NeptnExternalFree.exe

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

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

NeptnExternalFree.exe

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

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1308-54-0x000000013FF50000-0x00000001408BC000-memory.dmp	themida
behavioral1/memory/1308-55-0x000000013FF50000-0x00000001408BC000-memory.dmp	themida
behavioral1/memory/1308-56-0x000000013FF50000-0x00000001408BC000-memory.dmp	themida
behavioral1/memory/1308-57-0x000000013FF50000-0x00000001408BC000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

NeptnExternalFree.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA NeptnExternalFree.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

NeptnExternalFree.exe

pid process

1308 NeptnExternalFree.exe

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

pid	process
1308	NeptnExternalFree.exe

C:\Users\Admin\AppData\Local\Temp\NeptnExternalFree.exe
"C:\Users\Admin\AppData\Local\Temp\NeptnExternalFree.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:1308

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1308-54-0x000000013FF50000-0x00000001408BC000-memory.dmp

Filesize
9.4MB

Download
memory/1308-55-0x000000013FF50000-0x00000001408BC000-memory.dmp

Filesize
9.4MB

Download
memory/1308-56-0x000000013FF50000-0x00000001408BC000-memory.dmp

Filesize
9.4MB

Download
memory/1308-57-0x000000013FF50000-0x00000001408BC000-memory.dmp

Filesize
9.4MB

Download