ac9018feca227a5f513a5954e9274374f07ec87551e594242c9edf2f9e7f025b

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
12-11-2023 16:46

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General

Target

ac9018feca227a5f513a5954e9274374f07ec87551e594242c9edf2f9e7f025b.dll
Size

3.0MB
MD5

ee741e1b1ead93370428691e3e1ec18d
SHA1

d81159d926b2f5592912208f4de14e2fbfefaa77
SHA256

ac9018feca227a5f513a5954e9274374f07ec87551e594242c9edf2f9e7f025b
SHA512

9be5db9caf9408537c2dd64d15ba9e6b02df11a0359309962c3f86407b516c18252ceb51b3d31f613013987f4f348cba7dbe4f687c598ca0e202fd645b7afd5e
SSDEEP

49152:CUrAJ1BqAOnNWsEq3011NdhwCoRXmehA9oMBCfLaJ3Ym9Aamk3vvcLLb:CSmOnNCTE9B/DaJIJVk3vkLn

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

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

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 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2384-0-0x0000000010000000-0x0000000010782000-memory.dmp	themida
behavioral1/memory/2384-1-0x0000000010000000-0x0000000010782000-memory.dmp	themida
behavioral1/memory/2384-2-0x0000000010000000-0x0000000010782000-memory.dmp	themida
behavioral1/memory/2384-3-0x0000000010000000-0x0000000010782000-memory.dmp	themida
behavioral1/memory/2384-8-0x0000000010000000-0x0000000010782000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2384	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2384	rundll32.exe
2384	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2560 wrote to memory of 2384	2560	rundll32.exe	28
PID 2560 wrote to memory of 2384	2560	rundll32.exe	28
PID 2560 wrote to memory of 2384	2560	rundll32.exe	28
PID 2560 wrote to memory of 2384	2560	rundll32.exe	28
PID 2560 wrote to memory of 2384	2560	rundll32.exe	28
PID 2560 wrote to memory of 2384	2560	rundll32.exe	28
PID 2560 wrote to memory of 2384	2560	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac9018feca227a5f513a5954e9274374f07ec87551e594242c9edf2f9e7f025b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2560
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac9018feca227a5f513a5954e9274374f07ec87551e594242c9edf2f9e7f025b.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
  PID:2384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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/2384-0-0x0000000010000000-0x0000000010782000-memory.dmp

Filesize
7.5MB

Download
memory/2384-1-0x0000000010000000-0x0000000010782000-memory.dmp

Filesize
7.5MB

Download
memory/2384-2-0x0000000010000000-0x0000000010782000-memory.dmp

Filesize
7.5MB

Download
memory/2384-3-0x0000000010000000-0x0000000010782000-memory.dmp

Filesize
7.5MB

Download
memory/2384-4-0x0000000077190000-0x0000000077192000-memory.dmp

Filesize
8KB

Download
memory/2384-8-0x0000000010000000-0x0000000010782000-memory.dmp

Filesize
7.5MB

Download