5a0461545da96488d576540bc526e5c1a861d09f2c73f528e3191212d2f9f1b1

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
27-05-2024 12:57

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General

Target

sillyboost_cracked_v1/crack.dll
Size

4.9MB
MD5

d8131fd472e3f921dca592b6c0872c26
SHA1

3be46fc189d169673e3f8779128b42f17be131d3
SHA256

e923fb5d56d8f8f7bb2f0b11be779ca5d87164c536d9f8c0c24a89b52a372c06
SHA512

9fa8978e2f6549b56cc077e8d857cbc5e106cb9da0cef976326110ce0f6dee11ca0fe72751e63d862e42cad80508a0747377e08b72cc4faaa9f614381ebdf6a9
SSDEEP

98304:bd1z1vEYCYWcv4DoirkjuQM/OMc7/2QIqLAIOiqrr8HfdmjLdGGf:bdx1vMlDEXMc7MqcIOjH8O

Score

9^/10

evasion 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

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

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

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1996 wrote to memory of 1924	1996	rundll32.exe	WerFault.exe
PID 1996 wrote to memory of 1924	1996	rundll32.exe	WerFault.exe
PID 1996 wrote to memory of 1924	1996	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\sillyboost_cracked_v1\crack.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 WriteProcessMemory
PID:1996

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1996 -s 104
2⤵
PID:1924

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2976

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/1996-1-0x0000000072F50000-0x0000000073923000-memory.dmp

Filesize
9.8MB

Download
memory/1996-0-0x0000000072F50000-0x0000000073923000-memory.dmp

Filesize
9.8MB

Download
memory/1996-3-0x0000000072F50000-0x0000000073923000-memory.dmp

Filesize
9.8MB

Download
memory/1996-2-0x0000000072F50000-0x0000000073923000-memory.dmp

Filesize
9.8MB

Download
memory/1996-4-0x0000000072F50000-0x0000000073923000-memory.dmp

Filesize
9.8MB

Download
memory/1996-5-0x0000000072F50000-0x0000000073923000-memory.dmp

Filesize
9.8MB

Download
memory/1996-6-0x0000000072F50000-0x0000000073923000-memory.dmp

Filesize
9.8MB

Download
memory/1996-7-0x0000000072F50000-0x0000000073923000-memory.dmp

Filesize
9.8MB

Download