6d0a5048b64ef4877f1ea3480f95b899344dd020c05130055260048b91201dc0

Analysis

max time kernel
137s
max time network
155s
platform
windows7_x64
resource
win7-20220414-en
submitted
26-06-2022 06:08

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General

Target

usa1.exe
Size

3.2MB
MD5

ab8e9ac36f014b3e59d38f5a41dd5abe
SHA1

b040fed81d9d11384d8f972e51fb946128ddc398
SHA256

6d0a5048b64ef4877f1ea3480f95b899344dd020c05130055260048b91201dc0
SHA512

7004299e4eda607bac1ca3b89a38ff9e23065e0601269f03b699788bd39f858ac24aef0bd84690aafb24b76a52ee945635e56c06742f4f08b7f109c001c6f269

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:

usa1.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ usa1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	usa1.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:

usa1.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	usa1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	usa1.exe

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1488-56-0x0000000000400000-0x0000000000738000-memory.dmp	themida
behavioral1/memory/1488-58-0x0000000000400000-0x0000000000738000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

usa1.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA usa1.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

usa1.exe

pid process

1488 usa1.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

usa1.exe

pid process

1488 usa1.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	usa1.exe

pid	process
1488	usa1.exe

pid	process
1488	usa1.exe

C:\Users\Admin\AppData\Local\Temp\usa1.exe
"C:\Users\Admin\AppData\Local\Temp\usa1.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
PID:1488

Network

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/1488-54-0x0000000076C81000-0x0000000076C83000-memory.dmp

Filesize
8KB

Download
memory/1488-56-0x0000000000400000-0x0000000000738000-memory.dmp

Filesize
3.2MB

Download
memory/1488-57-0x0000000077DB0000-0x0000000077F30000-memory.dmp

Filesize
1.5MB

Download
memory/1488-58-0x0000000000400000-0x0000000000738000-memory.dmp

Filesize
3.2MB

Download