1b475e95186ce2a8843516be389b66a6c53c6b77bdac33ffcf5d00af133e7570

Analysis

max time kernel
140s
max time network
121s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 07:38

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General

Target

crack.dll
Size

5.0MB
MD5

7ae4309d363db9abfe45f8469f5338a9
SHA1

05318a3103fbd1515719394d9cbb32c55e015dfc
SHA256

8fae0e62e9a8989a74e631d754dd71acf6b93142abfa7281d2fcd1b26eabcd54
SHA512

830dbe93d878d51c13a4d0fec31062813b64d92be05bbea54a33e71deafa3f55238fdd97ae5198ff387480f0a88482cdff2c33e238a033c7def1087134aae795
SSDEEP

98304:+oSYCYbuF/KS6d3+3tv3qTfffzXS0j6fdmjLdGGf:7MBdf+ff7TjZ

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 1600 wrote to memory of 2656	1600	rundll32.exe	WerFault.exe
PID 1600 wrote to memory of 2656	1600	rundll32.exe	WerFault.exe
PID 1600 wrote to memory of 2656	1600	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\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:1600

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1600 -s 116
2⤵
PID:2656

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/1600-1-0x0000000072DD0000-0x00000000737BC000-memory.dmp

Filesize
9.9MB

Download
memory/1600-0-0x0000000072DD0000-0x00000000737BC000-memory.dmp

Filesize
9.9MB

Download
memory/1600-3-0x0000000072DD0000-0x00000000737BC000-memory.dmp

Filesize
9.9MB

Download
memory/1600-2-0x0000000072DD0000-0x00000000737BC000-memory.dmp

Filesize
9.9MB

Download
memory/1600-4-0x0000000072DD0000-0x00000000737BC000-memory.dmp

Filesize
9.9MB

Download
memory/1600-5-0x0000000072DD0000-0x00000000737BC000-memory.dmp

Filesize
9.9MB

Download
memory/1600-6-0x0000000072DD0000-0x00000000737BC000-memory.dmp

Filesize
9.9MB

Download
memory/1600-7-0x0000000072DD0000-0x00000000737BC000-memory.dmp

Filesize
9.9MB

Download