de9c4e8b4b0c756eee4e39221c1e4e0e11c2e67effb828e27de3c4b4470ccff2

Resubmissions

09-09-2024 19:14

240909-xxn4aavdrr 8

09-09-2024 19:13

240909-xxbg7avdqn 1

Analysis

max time kernel
120s
max time network
124s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
09-09-2024 19:14

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General

Target

MBSetup.exe
Size

2.5MB
MD5

d21bf3852bb27fb6f5459d2cf2bcd51c
SHA1

e59309bbe58c9584517e4bb50ff499dffb29d7b0
SHA256

de9c4e8b4b0c756eee4e39221c1e4e0e11c2e67effb828e27de3c4b4470ccff2
SHA512

17bc7740f131a1d4e84fd7e4ab5e1ce510660f5046340ef6d09ef99c56c88da2b6be3ae5c5ddb7213841c506eaec147c65abba1a7a2a8eb4fb8f6329bbaa03d1
SSDEEP

49152:FMofPlPU+QG/rOVcVz6StQyfvE0Z3R0nxiIq2dsTDwfw1Y:FMslc+QGjuTKtQRq261Y

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\mbamtestfile.dat	MBSetup.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	MBSetup.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	MBSetup.exe

Downloads MZ/PE file
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files\Malwarebytes\Anti-Malware\MBAMInstallerService.exe	MBSetup.exe
File created	C:\Program Files\Malwarebytes\c9c10da16edf11efb292c287de7aecdd	MBAMInstallerService.exe
File created	C:\Program Files\Malwarebytes\Anti-Malware\c9c10da26edf11efb7d1c287de7aecdd	MBAMInstallerService.exe
File created	C:\Program Files (x86)\mbamtestfile.dat	MBSetup.exe
File created	C:\Program Files\Malwarebytes\Anti-Malware\bb65edd0-b195-49f2-a40c-e857e45742b3	MBSetup.exe

Executes dropped EXE 1 IoCs

pid	Process
1108	MBAMInstallerService.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MBSetup.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000_Classes\Local Settings\MuiCache	MiniSearchHost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2068	MBSetup.exe
2068	MBSetup.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2068	MBSetup.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3796	MiniSearchHost.exe

C:\Users\Admin\AppData\Local\Temp\MBSetup.exe
"C:\Users\Admin\AppData\Local\Temp\MBSetup.exe"
1⤵
- Drops file in Drivers directory
- Checks BIOS information in registry
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
PID:2068

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:3796

C:\Program Files\Malwarebytes\Anti-Malware\MBAMInstallerService.exe
"C:\Program Files\Malwarebytes\Anti-Malware\MBAMInstallerService.exe"
1⤵
- Drops file in Program Files directory
- Executes dropped EXE
PID:1108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\Malwarebytes\Anti-Malware\MBAMInstallerService.exe

Filesize
8.6MB

MD5
f35a6782aea69cda718cc378504db826

SHA1
5fc4028de1c51089d9f487caa02a78d4d42266fd

SHA256
20f89ddb4dd26f98ce006ae2034a87e1c2347788697e0fdb68b87c95af0b680c

SHA512
5a5dcf1ecb32addf5fa9ffbce583fbdb4714e5b87553abd57723cb1b199c54bbaf038db1a7ee1cb095b1aad878f8d17919b55cb093c4a869d7356aaf28fb3a4f

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