Malware Analysis Report

2024-07-28 11:07

Sample ID 240526-p4e5yseb8v
Target ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633
SHA256 ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633
Tags
oss_ak bootkit persistence upx
score
9/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
9/10

SHA256

ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633

Threat Level: Likely malicious

The file ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633 was found to be: Likely malicious.

Malicious Activity Summary

oss_ak bootkit persistence upx

detect oss ak

UPX packed file

Writes to the Master Boot Record (MBR)

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Pre-OS Boot
T1542
Bootkit
T1542.003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Pre-OS Boot
T1542
Bootkit
T1542.003
Credential Access
TA0006
Discovery
TA0007
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-05-26 12:52

Signatures

detect oss ak

oss_ak
Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-26 12:52

Reported

2024-05-26 13:10

Platform

win7-20240221-en

Max time kernel

122s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe"

Signatures

detect oss ak

oss_ak
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe

"C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.xlinyi.cn udp
US 8.8.8.8:53 vv.video.qq.com udp
HK 129.226.102.98:443 vv.video.qq.com tcp
US 8.8.8.8:53 yz.xlinyi.cn udp
CN 106.53.151.139:4625 yz.xlinyi.cn tcp

Files

memory/1132-34-0x0000000002900000-0x0000000002901000-memory.dmp

memory/1132-32-0x0000000002900000-0x0000000002901000-memory.dmp

memory/1132-30-0x0000000002900000-0x0000000002901000-memory.dmp

memory/1132-29-0x00000000028F0000-0x00000000028F1000-memory.dmp

memory/1132-27-0x00000000028F0000-0x00000000028F1000-memory.dmp

memory/1132-35-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/1132-36-0x0000000000944000-0x0000000000D77000-memory.dmp

memory/1132-24-0x00000000028E0000-0x00000000028E1000-memory.dmp

memory/1132-22-0x00000000028E0000-0x00000000028E1000-memory.dmp

memory/1132-19-0x00000000028D0000-0x00000000028D1000-memory.dmp

memory/1132-17-0x00000000028D0000-0x00000000028D1000-memory.dmp

memory/1132-14-0x0000000001090000-0x0000000001091000-memory.dmp

memory/1132-12-0x0000000001090000-0x0000000001091000-memory.dmp

memory/1132-9-0x0000000001080000-0x0000000001081000-memory.dmp

memory/1132-7-0x0000000001080000-0x0000000001081000-memory.dmp

memory/1132-5-0x0000000001080000-0x0000000001081000-memory.dmp

memory/1132-4-0x00000000003E0000-0x00000000003E1000-memory.dmp

memory/1132-2-0x00000000003E0000-0x00000000003E1000-memory.dmp

memory/1132-0-0x00000000003E0000-0x00000000003E1000-memory.dmp

memory/1132-37-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-39-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-63-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-43-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-55-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-53-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-51-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-49-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-61-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-80-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/1132-59-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-81-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/1132-58-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-47-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-45-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-41-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-38-0x0000000010000000-0x000000001003E000-memory.dmp

memory/1132-82-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/1132-83-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/1132-84-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/1132-85-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/1132-86-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/1132-87-0x0000000000944000-0x0000000000D77000-memory.dmp

memory/1132-88-0x0000000000400000-0x0000000000F69000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-26 12:52

Reported

2024-05-26 13:09

Platform

win10v2004-20240508-en

Max time kernel

141s

Max time network

114s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe"

Signatures

detect oss ak

oss_ak
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe

"C:\Users\Admin\AppData\Local\Temp\ff1dbe82c659e3da8a962f2e9c97d541ee72f1277b62a30de50042cc956a7633.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.xlinyi.cn udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 vv.video.qq.com udp
HK 129.226.102.98:443 vv.video.qq.com tcp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 98.102.226.129.in-addr.arpa udp
US 8.8.8.8:53 yz.xlinyi.cn udp
CN 106.53.151.139:4625 yz.xlinyi.cn tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/2384-1-0x0000000001240000-0x0000000001241000-memory.dmp

memory/2384-6-0x00000000012B0000-0x00000000012B1000-memory.dmp

memory/2384-8-0x0000000000944000-0x0000000000D77000-memory.dmp

memory/2384-5-0x00000000012A0000-0x00000000012A1000-memory.dmp

memory/2384-4-0x0000000001290000-0x0000000001291000-memory.dmp

memory/2384-3-0x0000000001280000-0x0000000001281000-memory.dmp

memory/2384-2-0x0000000001270000-0x0000000001271000-memory.dmp

memory/2384-0-0x0000000001110000-0x0000000001111000-memory.dmp

memory/2384-7-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-9-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-45-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-51-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-49-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-52-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-47-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-43-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-41-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-39-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-35-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-34-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-29-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-27-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-25-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-23-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-21-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-19-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-18-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-15-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-13-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-37-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-31-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-11-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-10-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2384-53-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-54-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-55-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-56-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-57-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-58-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-59-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-60-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-61-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-62-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-63-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-64-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-65-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-66-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-67-0x0000000000400000-0x0000000000F69000-memory.dmp

memory/2384-68-0x0000000000944000-0x0000000000D77000-memory.dmp

memory/2384-69-0x0000000000400000-0x0000000000F69000-memory.dmp