a4d45ab48b642240a49f4196562a6db8635230128ba5d75acb984bd2dabf1aaa

General

Target

proto.dll
Size

3.6MB
MD5

dbd3c96fa937a3aee185ab5b029c5163
SHA1

4ddae888225456f9c697c48ac7f832ab49086098
SHA256

8d33cb46f56945d8b9096acfcdeedc5bd072c86a427e6efaa271c0464c8de3df
SHA512

85afc923be49eab582b57acf1405cac12227a2bf783c20d8a26d776c4ceccde77c7f6d3cabf70b22aaccd687f8b8de8e20fe364ff4d0ed8df3086eb9e068abf9
SSDEEP

98304:qdQ2SpOxTMX2CCcUAsvkRY04DesEzKTaUT+8L:mQNspMGCCOs5HDgzKTaT8L

Score

9^/10

discovery 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 10 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2088-0-0x0000000074320000-0x0000000074BC2000-memory.dmp	themida
behavioral1/memory/2088-3-0x00000000730B0000-0x0000000073952000-memory.dmp	themida
behavioral1/memory/2088-2-0x00000000730B0000-0x0000000073952000-memory.dmp	themida
behavioral1/memory/2088-6-0x00000000730B0000-0x0000000073952000-memory.dmp	themida
behavioral1/memory/2088-7-0x00000000730B0000-0x0000000073952000-memory.dmp	themida
behavioral1/memory/2088-5-0x00000000730B0000-0x0000000073952000-memory.dmp	themida
behavioral1/memory/2088-10-0x00000000730B0000-0x0000000073952000-memory.dmp	themida
behavioral1/memory/2088-11-0x00000000730B0000-0x0000000073952000-memory.dmp	themida
behavioral1/memory/2088-9-0x00000000730B0000-0x0000000073952000-memory.dmp	themida
behavioral1/memory/2088-8-0x00000000730B0000-0x0000000073952000-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
2088	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 2088	2640	rundll32.exe	30
PID 2640 wrote to memory of 2088	2640	rundll32.exe	30
PID 2640 wrote to memory of 2088	2640	rundll32.exe	30
PID 2640 wrote to memory of 2088	2640	rundll32.exe	30
PID 2640 wrote to memory of 2088	2640	rundll32.exe	30
PID 2640 wrote to memory of 2088	2640	rundll32.exe	30
PID 2640 wrote to memory of 2088	2640	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\proto.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\proto.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
  - System Location Discovery: System Language Discovery
  PID:2088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2088-0-0x0000000074320000-0x0000000074BC2000-memory.dmp

Filesize
8.6MB

Download
memory/2088-1-0x0000000074320000-0x0000000074BC2000-memory.dmp

Filesize
8.6MB

Download
memory/2088-4-0x0000000077560000-0x0000000077562000-memory.dmp

Filesize
8KB

Download
memory/2088-3-0x00000000730B0000-0x0000000073952000-memory.dmp

Filesize
8.6MB

Download
memory/2088-2-0x00000000730B0000-0x0000000073952000-memory.dmp

Filesize
8.6MB

Download
memory/2088-6-0x00000000730B0000-0x0000000073952000-memory.dmp

Filesize
8.6MB

Download
memory/2088-7-0x00000000730B0000-0x0000000073952000-memory.dmp

Filesize
8.6MB

Download
memory/2088-5-0x00000000730B0000-0x0000000073952000-memory.dmp

Filesize
8.6MB

Download
memory/2088-10-0x00000000730B0000-0x0000000073952000-memory.dmp

Filesize
8.6MB

Download
memory/2088-11-0x00000000730B0000-0x0000000073952000-memory.dmp

Filesize
8.6MB

Download
memory/2088-9-0x00000000730B0000-0x0000000073952000-memory.dmp

Filesize
8.6MB

Download
memory/2088-8-0x00000000730B0000-0x0000000073952000-memory.dmp

Filesize
8.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads