4ddaa14f57744b2cac875ffb15a09e49246b9a45ab3c1122dca7aa47f820a1f2

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
30-06-2024 07:11

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General

Target

$PLUGINSDIR/GWInstSt.exe
Size

2.2MB
MD5

9a62cce787dfcc54209313a7f9fb6671
SHA1

35308ca6dfe2862f88f9ba60b4ddb42cfa188f0e
SHA256

9df71be3506e9bdd85b3e688a7672fbad674c6ae4a2e1f6cd40326c07e1b839a
SHA512

681c4144ce964780c19dae317fc861e4bbccb4130738d00fb1424b9f3c115c05c98b506952a017c03ce1cdecfc4bcf257b0ffacc5765e0dea4e817d46e1cd397
SSDEEP

49152:zU2GpDy79bnUKbpxU30TzlefgDvL+M7bG8uPvkkqqFcMfGJMEf:4bDsXbpnTzlLaMHG8AqqFrS

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:

GWInstSt.exe

description ioc process

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

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

GWInstSt.exe

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

Themida packer 2 IoCs
Detects Themida, an advanced Windows software protection system.
themida

Processes:

resource yara_rule

behavioral3/memory/1992-0-0x00000000002C0000-0x00000000008B6000-memory.dmp themida
behavioral3/memory/1992-3-0x00000000002C0000-0x00000000008B6000-memory.dmp themida
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

GWInstSt.exe

description ioc process

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

Processes:

GWInstSt.exe

pid process

1992 GWInstSt.exe

resource	yara_rule
behavioral3/memory/1992-0-0x00000000002C0000-0x00000000008B6000-memory.dmp	themida
behavioral3/memory/1992-3-0x00000000002C0000-0x00000000008B6000-memory.dmp	themida

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

pid	process
1992	GWInstSt.exe

C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\GWInstSt.exe
"C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\GWInstSt.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:1992

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/1992-0-0x00000000002C0000-0x00000000008B6000-memory.dmp

Filesize
6.0MB

Download
memory/1992-1-0x0000000077800000-0x0000000077802000-memory.dmp

Filesize
8KB

Download
memory/1992-3-0x00000000002C0000-0x00000000008B6000-memory.dmp

Filesize
6.0MB

Download