cc85ea1f8a41f30717c21c6210140636581829ecac1065b44fb41cda19433342

Analysis

max time kernel
15s
max time network
19s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 11:53

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

LoaderKernel.dll
Size

19.8MB
MD5

c2041e2d61ef8fe7627c5e929e04264a
SHA1

950a1cc826d8a5ed05e03425e2cd5a2c646caace
SHA256

cc85ea1f8a41f30717c21c6210140636581829ecac1065b44fb41cda19433342
SHA512

5e22900f51d681dcb97710157dbd09154dbd6b73b46319ae137919761c494bc3d5c327cdc8a183df151ddfa7cc2d914f198f26d4ca7581dbd7f011ca94b5deab
SSDEEP

393216:DRY7e1+rHO/ts/VXVUx3xrmu8ClMPKXef7PQ:FjCFVXyhCYmyi0

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.exe

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	2172	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

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

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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2172	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2244	2172	rundll32.exe	28
PID 2172 wrote to memory of 2244	2172	rundll32.exe	28
PID 2172 wrote to memory of 2244	2172	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\LoaderKernel.dll,#1
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Blocklisted process makes network request
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2172 -s 332
  2⤵
  PID:2244

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

Loading Replay Monitor...

Downloads

memory/2172-0-0x00000000770D0000-0x0000000077279000-memory.dmp

Filesize
1.7MB

Download
memory/2172-1-0x000007FEEBCD0000-0x000007FEEF02C000-memory.dmp

Filesize
51.4MB

Download
memory/2172-2-0x000007FEEBCD0000-0x000007FEEF02C000-memory.dmp

Filesize
51.4MB

Download
memory/2172-3-0x000007FEEBCD0000-0x000007FEEF02C000-memory.dmp

Filesize
51.4MB

Download
memory/2172-4-0x000007FEEBCD0000-0x000007FEEF02C000-memory.dmp

Filesize
51.4MB

Download
memory/2172-5-0x000007FEEBCD0000-0x000007FEEF02C000-memory.dmp

Filesize
51.4MB

Download
memory/2172-6-0x000007FEEBCD0000-0x000007FEEF02C000-memory.dmp

Filesize
51.4MB

Download
memory/2172-7-0x000007FEEBCD0000-0x000007FEEF02C000-memory.dmp

Filesize
51.4MB

Download
memory/2172-8-0x000007FEEBCD0000-0x000007FEEF02C000-memory.dmp

Filesize
51.4MB

Download
memory/2172-9-0x000007FEEBCD0000-0x000007FEEF02C000-memory.dmp

Filesize
51.4MB

Download
memory/2172-10-0x000007FEEBCD0000-0x000007FEEF02C000-memory.dmp

Filesize
51.4MB

Download
memory/2172-11-0x00000000770D0000-0x0000000077279000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads