b08d00a9eba33a30059541904152d59655c7354316966fdd58090aae59958dd3

Resubmissions

24-03-2023 19:59

230324-yqwp8aha65 9

24-03-2023 19:53

230324-yl46ssbb7w 9

Analysis

max time kernel
88s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
24-03-2023 19:59

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General

Target

Growpai.dll
Size

4.8MB
MD5

7f3c2aed44eb710ed0f624f3d4bb665e
SHA1

8389c33e975681201900eab75b4d8d34fca52000
SHA256

b08d00a9eba33a30059541904152d59655c7354316966fdd58090aae59958dd3
SHA512

82fa8eefb4d9086bab8995d4586f73022f4e90170b1f758909f2c6d564c82f35e12fcda6aa1b514c0ea2d21ef356376a1229aae71217a591194eb3b015c7c115
SSDEEP

98304:4FSydiu3WTYUHPFH7DKIE0hTBs4hQl2aRa5pi8SS0B71pi:40RxTBHPJDKPqBs4CR2ES0Bi

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:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.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:

rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Themida packer 8 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/2184-133-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp	themida
behavioral2/memory/2184-134-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp	themida
behavioral2/memory/2184-135-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp	themida
behavioral2/memory/2184-136-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp	themida
behavioral2/memory/2184-137-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp	themida
behavioral2/memory/2184-138-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp	themida
behavioral2/memory/2184-139-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp	themida
behavioral2/memory/2184-140-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

2184 rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

pid	process
2184	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Growpai.dll,#1
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:2184

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/2184-133-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp

Filesize
12.4MB

Download
memory/2184-134-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp

Filesize
12.4MB

Download
memory/2184-135-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp

Filesize
12.4MB

Download
memory/2184-136-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp

Filesize
12.4MB

Download
memory/2184-137-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp

Filesize
12.4MB

Download
memory/2184-138-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp

Filesize
12.4MB

Download
memory/2184-139-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp

Filesize
12.4MB

Download
memory/2184-140-0x00007FFBF7F60000-0x00007FFBF8BD2000-memory.dmp

Filesize
12.4MB

Download