4181b12efba3c61f48ed054af4152e80805a1ed13d50f60ec039f1d628e3b9d9

Analysis

max time kernel
42s
max time network
45s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
21-07-2022 18:49

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General

Target

aspack.dll
Size

8.0MB
MD5

0e79c52d1fe3697ce106755c01450993
SHA1

026c496e59a0ab7cd614ec0520b085ddf2a44c97
SHA256

50cf129c7b370e290d28ae4481e2fdb3f71c073ff9a4093abd80ed92ef4db8bf
SHA512

5a6ee92b0532e5c74b2ea5cd942bfb83d4c530b6493541325937fca746f02b49f96ff28fecddebda6d97ee1afde265729e618bbf8e715c2cc4295dde09de61b4

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 6 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/2024-57-0x0000000001F60000-0x0000000004A4B000-memory.dmp	themida
behavioral1/memory/2024-58-0x0000000001F60000-0x0000000004A4B000-memory.dmp	themida
behavioral1/memory/2024-59-0x0000000001F60000-0x0000000004A4B000-memory.dmp	themida
behavioral1/memory/2024-60-0x0000000001F60000-0x0000000004A4B000-memory.dmp	themida
behavioral1/memory/2024-61-0x0000000001F60000-0x0000000004A4B000-memory.dmp	themida
behavioral1/memory/2024-62-0x0000000001F60000-0x0000000004A4B000-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

2024 rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1552 2024 WerFault.exe rundll32.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

rundll32.exe

pid process

2024 rundll32.exe

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

pid	process
2024	rundll32.exe

pid	pid_target	process	target process
1552	2024	WerFault.exe	rundll32.exe

pid	process
2024	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1552	2024	rundll32.exe	WerFault.exe
PID 2024 wrote to memory of 1552	2024	rundll32.exe	WerFault.exe
PID 2024 wrote to memory of 1552	2024	rundll32.exe	WerFault.exe
PID 2024 wrote to memory of 1552	2024	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aspack.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1988

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aspack.dll,#1
2⤵
- 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:2024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2024 -s 308
3⤵
- Program crash
PID:1552

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

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Downloads

memory/1552-63-0x0000000000000000-mapping.dmp

Download
memory/2024-54-0x0000000000000000-mapping.dmp

Download
memory/2024-55-0x0000000075731000-0x0000000075733000-memory.dmp

Filesize
8KB

Download
memory/2024-56-0x00000000772D0000-0x0000000077450000-memory.dmp

Filesize
1.5MB

Download
memory/2024-57-0x0000000001F60000-0x0000000004A4B000-memory.dmp

Filesize
42.9MB

Download
memory/2024-58-0x0000000001F60000-0x0000000004A4B000-memory.dmp

Filesize
42.9MB

Download
memory/2024-59-0x0000000001F60000-0x0000000004A4B000-memory.dmp

Filesize
42.9MB

Download
memory/2024-60-0x0000000001F60000-0x0000000004A4B000-memory.dmp

Filesize
42.9MB

Download
memory/2024-61-0x0000000001F60000-0x0000000004A4B000-memory.dmp

Filesize
42.9MB

Download
memory/2024-62-0x0000000001F60000-0x0000000004A4B000-memory.dmp

Filesize
42.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads