d5a200c34505465d309415de2c0b78b3f7e15e0d07583412eca72e7685ab28c9

Analysis

max time kernel
594s
max time network
603s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 08:18

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General

Target

Techsmith Camtasia Hook/winmm.dll
Size

3.3MB
MD5

65fbcfeeeb2349543b40852a071a57af
SHA1

55e725af29707b5fc2e6223eb7221a48119e22c6
SHA256

47e1ca2cc1f871a61341f4db4cb825713f1526aca645f8437153c537e6b4772c
SHA512

298b9b354611a835f6a818fccc5f5b5e68b423a013e45d804e595d02e9284f45136437372c8581602bc2c42c57cd71e79a308d9614cac0601e086368910aaa2f
SSDEEP

49152:wyeiKWFQRV+/Lvmf1pH4oaOdHoNIY97d84+Uyxm2nAcxm1Sk+VCG/1+P8X81Q0:wRYCGOdIdT84+zmGNEI1CjPe81Q

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 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/3216-0-0x00007FFED7EB0000-0x00007FFED8670000-memory.dmp	themida
behavioral2/memory/3216-2-0x00007FFED7EB0000-0x00007FFED8670000-memory.dmp	themida
behavioral2/memory/3216-3-0x00007FFED7EB0000-0x00007FFED8670000-memory.dmp	themida
behavioral2/memory/3216-4-0x00007FFED7EB0000-0x00007FFED8670000-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

3216 rundll32.exe

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

pid	process
3216	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Techsmith Camtasia Hook\winmm.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:3216

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3692 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:3568

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1400 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:4008

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/3216-0-0x00007FFED7EB0000-0x00007FFED8670000-memory.dmp

Filesize
7.8MB

Download
memory/3216-1-0x00007FFEF6110000-0x00007FFEF6112000-memory.dmp

Filesize
8KB

Download
memory/3216-2-0x00007FFED7EB0000-0x00007FFED8670000-memory.dmp

Filesize
7.8MB

Download
memory/3216-3-0x00007FFED7EB0000-0x00007FFED8670000-memory.dmp

Filesize
7.8MB

Download
memory/3216-4-0x00007FFED7EB0000-0x00007FFED8670000-memory.dmp

Filesize
7.8MB

Download
memory/3216-6-0x00007FFEF6070000-0x00007FFEF6265000-memory.dmp

Filesize
2.0MB

Download