4b08cc716f6f89415e2dc85e3c4eb626fcb9b0697f1596d5a27482b5a40d3227

Analysis

max time kernel
30s
max time network
32s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
29-03-2023 23:36

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General

Target

Loader.exe
Size

3.3MB
MD5

aa27322c80872d70bcd3eabde5f88141
SHA1

daef906c51350e74bc7eeace80e35b1bb2e2f443
SHA256

4b08cc716f6f89415e2dc85e3c4eb626fcb9b0697f1596d5a27482b5a40d3227
SHA512

12ad87b7ab61c92246ddae74eaa62223be948b57abcea1024b21a63bc0e1e6db66c3d911bbe30c857426602436a2a92479323513f25df9b683cda127a84e594e
SSDEEP

49152:F/4780JJXqoYgkt9fT5mhaKG/iKz8Sn/Jypm+IUK7AYoL2ENttSIyUA8z/haouab:cfit/R6Kz8S0IjgvPxyfQ54Yfsxbhc

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:

Loader.exe

description ioc process

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

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

Loader.exe

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

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/2172-133-0x00007FF713D60000-0x00007FF714685000-memory.dmp	themida
behavioral2/memory/2172-134-0x00007FF713D60000-0x00007FF714685000-memory.dmp	themida
behavioral2/memory/2172-135-0x00007FF713D60000-0x00007FF714685000-memory.dmp	themida
behavioral2/memory/2172-136-0x00007FF713D60000-0x00007FF714685000-memory.dmp	themida
behavioral2/memory/2172-139-0x00007FF713D60000-0x00007FF714685000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

Loader.exe

description ioc process

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

Processes:

Loader.exe

pid process

2172 Loader.exe

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

Suspicious behavior: EnumeratesProcesses 38 IoCs

Processes:

Loader.exe

pid	process
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe
2172	Loader.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Loader.execmd.exe

description	pid	process	target process
PID 2172 wrote to memory of 3248	2172	Loader.exe	cmd.exe
PID 2172 wrote to memory of 3248	2172	Loader.exe	cmd.exe
PID 3248 wrote to memory of 2196	3248	cmd.exe	curl.exe
PID 3248 wrote to memory of 2196	3248	cmd.exe	curl.exe
PID 2172 wrote to memory of 232	2172	Loader.exe	cmd.exe
PID 2172 wrote to memory of 232	2172	Loader.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- 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:2172

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c curl --silent > OUTPUT.TXT https://auxy.gay/loader/loader.txt
2⤵
- Suspicious use of WriteProcessMemory
PID:3248

C:\Windows\system32\curl.exe
curl --silent https://auxy.gay/loader/loader.txt
3⤵
PID:2196

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c del OUTPUT.TXT >NUL
2⤵
PID:232

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\OUTPUT.TXT
Filesize
4B

MD5
84b17206d983a7430710b2a1f8ae52b8

SHA1
e350bf129ed3e8455fb310efe23a787adfdf9fb4

SHA256
b6403da9b22abe355ad17208a336e658322c5d1d7ff646ca7b9229237ba4aef4

SHA512
35101d67d63a9a28f90605bf10b9c8a524eb84bf20ddb8c7e51ef8640d151966f8d22fd18e55119fbcf9da2c3c59fe469a7d12a937440a39e7b997e48d7b4092

Download Submit
memory/2172-133-0x00007FF713D60000-0x00007FF714685000-memory.dmp

Filesize
9.1MB

Download
memory/2172-134-0x00007FF713D60000-0x00007FF714685000-memory.dmp

Filesize
9.1MB

Download
memory/2172-135-0x00007FF713D60000-0x00007FF714685000-memory.dmp

Filesize
9.1MB

Download
memory/2172-136-0x00007FF713D60000-0x00007FF714685000-memory.dmp

Filesize
9.1MB

Download
memory/2172-139-0x00007FF713D60000-0x00007FF714685000-memory.dmp

Filesize
9.1MB

Download