2a9b1c1f730c4146ff4356e3c5b6329ff5ea6f022d51146b61df8d276afd90df

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-06-2024 08:43

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General

Target

MicrosoftToolkit.exe
Size

317.1MB
MD5

d3086e8a000add3d507a72d464e82e4b
SHA1

16de80b98ac8cbb17863662fa1d02b6cd3151628
SHA256

2a9b1c1f730c4146ff4356e3c5b6329ff5ea6f022d51146b61df8d276afd90df
SHA512

6ed6edd5bc1604bdaecbb2b2181bdc5820d53d90477f47980aa14bbc1c081c0e178b524bb972e13df6fa134403d7ff3ac6fd6772857c32f69f7dd0efef0a839e
SSDEEP

196608:WXnfk307gaHtQJhl4b9m/yNhnrH1PY0Zh4e:WXn830cI+lr/yNhnrVPzh

Score

7^/10

upx

Malware Config

Signatures

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:

Setup.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Setup.exe
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate Setup.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

MicrosoftToolkit.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation MicrosoftToolkit.exe
Executes dropped EXE 1 IoCs

Processes:

Setup.exe

pid process

2628 Setup.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Setup.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Setup.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	MicrosoftToolkit.exe

pid	process
2628	Setup.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Setup.exe	upx
behavioral3/memory/2628-16-0x0000000000400000-0x0000000000623000-memory.dmp	upx
behavioral3/memory/2628-80-0x0000000000400000-0x0000000000623000-memory.dmp	upx

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

MicrosoftToolkit.exe

pid process

1628 MicrosoftToolkit.exe
1628 MicrosoftToolkit.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

Setup.exe

description ioc process

Key created \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS Setup.exe
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BaseBoardProduct Setup.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

MicrosoftToolkit.exeSetup.exe

pid process

1628 MicrosoftToolkit.exe
1628 MicrosoftToolkit.exe
2628 Setup.exe
2628 Setup.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Setup.exe

description pid process

Token: 33 2628 Setup.exe
Token: SeIncBasePriorityPrivilege 2628 Setup.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

Setup.exe

pid process

2628 Setup.exe

pid	process
1628	MicrosoftToolkit.exe
1628	MicrosoftToolkit.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	Setup.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BaseBoardProduct	Setup.exe

pid	process
1628	MicrosoftToolkit.exe
1628	MicrosoftToolkit.exe
2628	Setup.exe
2628	Setup.exe

description	pid	process
Token: 33	2628	Setup.exe
Token: SeIncBasePriorityPrivilege	2628	Setup.exe

pid	process
2628	Setup.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

MicrosoftToolkit.exe

description	pid	process	target process
PID 1628 wrote to memory of 2628	1628	MicrosoftToolkit.exe	Setup.exe
PID 1628 wrote to memory of 2628	1628	MicrosoftToolkit.exe	Setup.exe
PID 1628 wrote to memory of 2628	1628	MicrosoftToolkit.exe	Setup.exe

C:\Users\Admin\AppData\Local\Temp\MicrosoftToolkit.exe
"C:\Users\Admin\AppData\Local\Temp\MicrosoftToolkit.exe"
1⤵
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1628

C:\Users\Admin\AppData\Local\Temp\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\Setup.exe"
2⤵
- Checks BIOS information in registry
- Executes dropped EXE
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2628

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Setup.exe
Filesize
3.8MB

MD5
323c0fd51071400b51eedb1be90a8188

SHA1
0efc35935957c25193bbe9a83ab6caa25a487ada

SHA256
2f2aba1e074f5f4baa08b524875461889f8f04d4ffc43972ac212e286022ab94

SHA512
4c501c7135962e2f02b68d6069f2191ddb76f990528dacd209955a44972122718b9598400ba829abab2d4345b4e1a4b93453c8e7ba42080bd492a34cf8443e7e

Download Submit
memory/1628-0-0x0000000014D00000-0x0000000014D01000-memory.dmp

Filesize
4KB

Download
memory/1628-1-0x0000000014D10000-0x0000000014D11000-memory.dmp

Filesize
4KB

Download
memory/1628-2-0x00000000000A0000-0x00000000010A0000-memory.dmp

Filesize
16.0MB

Download
memory/2628-70-0x0000000002E60000-0x0000000002E80000-memory.dmp

Filesize
128KB

Download
memory/2628-62-0x0000000002E50000-0x0000000002E60000-memory.dmp

Filesize
64KB

Download
memory/2628-16-0x0000000000400000-0x0000000000623000-memory.dmp

Filesize
2.1MB

Download
memory/2628-54-0x00000000024F0000-0x0000000002500000-memory.dmp

Filesize
64KB

Download
memory/2628-46-0x00000000024D0000-0x00000000024E1000-memory.dmp

Filesize
68KB

Download
memory/2628-38-0x0000000010000000-0x0000000010021000-memory.dmp

Filesize
132KB

Download
memory/2628-31-0x00000000024B0000-0x00000000024C2000-memory.dmp

Filesize
72KB

Download
memory/2628-25-0x0000000002230000-0x0000000002240000-memory.dmp

Filesize
64KB

Download
memory/2628-17-0x0000000002490000-0x00000000024A3000-memory.dmp

Filesize
76KB

Download
memory/2628-80-0x0000000000400000-0x0000000000623000-memory.dmp

Filesize
2.1MB

Download