d709ae1b37c9d383982989ae7e3f6c8c2612eb1a9a661707a419e5440891fcc6

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-en-20211208
submitted
29-12-2021 13:59

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General

Target

exLoader.exe
Size

3.0MB
MD5

1c0a1da7b182eb810f8f682129def781
SHA1

a781d30ed510e218609d4f45fec4a24b7e31f625
SHA256

7347dab747d69502c28a5ab0c462b75dc2b6dfe9b78042f2464004375c5902e5
SHA512

35be08dda96f0e52243c0ecde4a51aa5656e97c578f825a66eaa04e345f00c90d24d9ccf3da902c8138841aef8f6afffcc6dd75dfe1c13a099f5976d3154cf2d

Score

9^/10

evasion themida trojan

Malware Config

Signatures

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

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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:

exLoader.exe

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

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1584-56-0x0000000000DD0000-0x00000000015F1000-memory.dmp	themida
behavioral1/memory/1584-57-0x0000000000DD0000-0x00000000015F1000-memory.dmp	themida
behavioral1/memory/1584-58-0x0000000000DD0000-0x00000000015F1000-memory.dmp	themida
behavioral1/memory/1584-59-0x0000000000DD0000-0x00000000015F1000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

exLoader.exe

description ioc process

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

Processes:

exLoader.exe

pid process

1584 exLoader.exe

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

pid	process
1584	exLoader.exe

C:\Users\Admin\AppData\Local\Temp\exLoader.exe
"C:\Users\Admin\AppData\Local\Temp\exLoader.exe"
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:1584

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1584-55-0x0000000075191000-0x0000000075193000-memory.dmp

Filesize
8KB

Download
memory/1584-56-0x0000000000DD0000-0x00000000015F1000-memory.dmp

Filesize
8.1MB

Download
memory/1584-57-0x0000000000DD0000-0x00000000015F1000-memory.dmp

Filesize
8.1MB

Download
memory/1584-58-0x0000000000DD0000-0x00000000015F1000-memory.dmp

Filesize
8.1MB

Download
memory/1584-59-0x0000000000DD0000-0x00000000015F1000-memory.dmp

Filesize
8.1MB

Download