d8a6e6ed914c5e3fb8ce3b5e49eb12f99008a4f13dbad9d9c3e6b64dfdd5bf98

Analysis

max time kernel
4s
max time network
23s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
30-06-2024 23:46

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General

Target

REFLEX_V3.exe
Size

5.7MB
MD5

177ce961679d6ef708bdd1d6a24724e5
SHA1

55be52bff20821d00cbc9a09ba21edef98aadf46
SHA256

d8a6e6ed914c5e3fb8ce3b5e49eb12f99008a4f13dbad9d9c3e6b64dfdd5bf98
SHA512

c96d62701bdc212bb626e2ca3ecaceabd40a9f55f2779416a03e51d25bc5a0ff8c83727cb9aa8bc6a50f7efb1a9a00c2c2eb74b1fafa81cecdce0542c483b768
SSDEEP

98304:Sf914CcbNkOTh/HXwb7E/Ge7IO7aPmBdW/r3NBrzgoEIqy6iRnOQ48qFA:Sfz4Txt3wbqaIZE/r3NqoEdyVzeq

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:

REFLEX_V3.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ REFLEX_V3.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	REFLEX_V3.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:

REFLEX_V3.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	REFLEX_V3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	REFLEX_V3.exe

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/4372-0-0x0000000140000000-0x0000000140E67000-memory.dmp	themida
behavioral1/memory/4372-1-0x0000000140000000-0x0000000140E67000-memory.dmp	themida
behavioral1/memory/4372-2-0x0000000140000000-0x0000000140E67000-memory.dmp	themida
behavioral1/memory/4372-3-0x0000000140000000-0x0000000140E67000-memory.dmp	themida
behavioral1/memory/4372-7-0x0000000140000000-0x0000000140E67000-memory.dmp	themida
behavioral1/memory/4372-13-0x0000000140000000-0x0000000140E67000-memory.dmp	themida
behavioral1/memory/4372-15-0x0000000140000000-0x0000000140E67000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

REFLEX_V3.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA REFLEX_V3.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

REFLEX_V3.exe

pid process

4372 REFLEX_V3.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	REFLEX_V3.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

REFLEX_V3.exe

pid	process
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe
4372	REFLEX_V3.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

REFLEX_V3.execmd.exe

description	pid	process	target process
PID 4372 wrote to memory of 1848	4372	REFLEX_V3.exe	cmd.exe
PID 4372 wrote to memory of 1848	4372	REFLEX_V3.exe	cmd.exe
PID 1848 wrote to memory of 372	1848	cmd.exe	certutil.exe
PID 1848 wrote to memory of 372	1848	cmd.exe	certutil.exe
PID 1848 wrote to memory of 660	1848	cmd.exe	find.exe
PID 1848 wrote to memory of 660	1848	cmd.exe	find.exe
PID 1848 wrote to memory of 4836	1848	cmd.exe	find.exe
PID 1848 wrote to memory of 4836	1848	cmd.exe	find.exe

C:\Users\Admin\AppData\Local\Temp\REFLEX_V3.exe
"C:\Users\Admin\AppData\Local\Temp\REFLEX_V3.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:4372

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\REFLEX_V3.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
2⤵
- Suspicious use of WriteProcessMemory
PID:1848

C:\Windows\system32\certutil.exe
certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\REFLEX_V3.exe" MD5
3⤵
PID:372

C:\Windows\system32\find.exe
find /i /v "md5"
3⤵
PID:660

C:\Windows\system32\find.exe
find /i /v "certutil"
3⤵
PID:4836

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c cls
2⤵
PID:204

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/4372-0-0x0000000140000000-0x0000000140E67000-memory.dmp

Filesize
14.4MB

Download
memory/4372-1-0x0000000140000000-0x0000000140E67000-memory.dmp

Filesize
14.4MB

Download
memory/4372-2-0x0000000140000000-0x0000000140E67000-memory.dmp

Filesize
14.4MB

Download
memory/4372-3-0x0000000140000000-0x0000000140E67000-memory.dmp

Filesize
14.4MB

Download
memory/4372-4-0x00007FFDAA668000-0x00007FFDAA66A000-memory.dmp

Filesize
8KB

Download
memory/4372-5-0x00007FFDAA5C0000-0x00007FFDAA79B000-memory.dmp

Filesize
1.9MB

Download
memory/4372-6-0x00007FFDAA5C0000-0x00007FFDAA79B000-memory.dmp

Filesize
1.9MB

Download
memory/4372-7-0x0000000140000000-0x0000000140E67000-memory.dmp

Filesize
14.4MB

Download
memory/4372-9-0x00007FFDAA5C0000-0x00007FFDAA79B000-memory.dmp

Filesize
1.9MB

Download
memory/4372-8-0x00007FFDAA5C0000-0x00007FFDAA79B000-memory.dmp

Filesize
1.9MB

Download
memory/4372-10-0x00007FFDAA5C0000-0x00007FFDAA79B000-memory.dmp

Filesize
1.9MB

Download
memory/4372-14-0x00007FFDAA5C0000-0x00007FFDAA79B000-memory.dmp

Filesize
1.9MB

Download
memory/4372-13-0x0000000140000000-0x0000000140E67000-memory.dmp

Filesize
14.4MB

Download
memory/4372-16-0x00007FFDAA5C0000-0x00007FFDAA79B000-memory.dmp

Filesize
1.9MB

Download
memory/4372-15-0x0000000140000000-0x0000000140E67000-memory.dmp

Filesize
14.4MB

Download