Malware Analysis Report

2024-07-28 11:03

Sample ID 240529-bjgldsca9v
Target 84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66
SHA256 84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66
Tags
bootkit oss_ak 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

84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66

Threat Level: Likely malicious

The file 84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66 was found to be: Likely malicious.

Malicious Activity Summary

bootkit oss_ak 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

Modifies registry class

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

2024-05-29 01:10

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

2024-05-29 01:10

Reported

2024-05-29 01:12

Platform

win7-20240221-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe"

Signatures

detect oss ak

oss_ak
Description Indicator Process Target
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UPX packed file

upx
Description Indicator Process Target
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Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe

"C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.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/2264-29-0x00000000002F0000-0x00000000002F1000-memory.dmp

memory/2264-34-0x0000000000340000-0x0000000000341000-memory.dmp

memory/2264-32-0x0000000000340000-0x0000000000341000-memory.dmp

memory/2264-30-0x0000000000340000-0x0000000000341000-memory.dmp

memory/2264-27-0x00000000002F0000-0x00000000002F1000-memory.dmp

memory/2264-24-0x00000000002D0000-0x00000000002D1000-memory.dmp

memory/2264-22-0x00000000002D0000-0x00000000002D1000-memory.dmp

memory/2264-19-0x00000000002B0000-0x00000000002B1000-memory.dmp

memory/2264-17-0x00000000002B0000-0x00000000002B1000-memory.dmp

memory/2264-14-0x00000000002A0000-0x00000000002A1000-memory.dmp

memory/2264-12-0x00000000002A0000-0x00000000002A1000-memory.dmp

memory/2264-9-0x0000000000290000-0x0000000000291000-memory.dmp

memory/2264-35-0x0000000000400000-0x0000000000F5E000-memory.dmp

memory/2264-7-0x0000000000290000-0x0000000000291000-memory.dmp

memory/2264-5-0x0000000000290000-0x0000000000291000-memory.dmp

memory/2264-4-0x0000000000280000-0x0000000000281000-memory.dmp

memory/2264-2-0x0000000000280000-0x0000000000281000-memory.dmp

memory/2264-0-0x0000000000280000-0x0000000000281000-memory.dmp

memory/2264-36-0x000000000092A000-0x0000000000D5A000-memory.dmp

memory/2264-37-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-45-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-63-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-61-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-59-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-57-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-56-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-53-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-51-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-49-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-47-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-43-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-41-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-40-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-38-0x0000000010000000-0x000000001003E000-memory.dmp

memory/2264-80-0x0000000000400000-0x0000000000F5E000-memory.dmp

memory/2264-81-0x0000000000400000-0x0000000000F5E000-memory.dmp

memory/2264-82-0x0000000000400000-0x0000000000F5E000-memory.dmp

memory/2264-83-0x0000000000400000-0x0000000000F5E000-memory.dmp

memory/2264-84-0x0000000000400000-0x0000000000F5E000-memory.dmp

memory/2264-85-0x0000000000400000-0x0000000000F5E000-memory.dmp

memory/2264-86-0x0000000000400000-0x0000000000F5E000-memory.dmp

memory/2264-87-0x000000000092A000-0x0000000000D5A000-memory.dmp

memory/2264-88-0x0000000000400000-0x0000000000F5E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-29 01:10

Reported

2024-05-29 01:12

Platform

win10v2004-20240426-en

Max time kernel

93s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe"

Signatures

detect oss ak

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

UPX packed file

upx
Description Indicator Process Target
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Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\OpenWith.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe

"C:\Users\Admin\AppData\Local\Temp\84dd4b7747d83f5cd5357dbec4d328f0cfe5b9b47652ad099cbceee24df58a66.exe"

C:\Windows\system32\OpenWith.exe

C:\Windows\system32\OpenWith.exe -Embedding

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
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
HK 129.226.102.98:443 vv.video.qq.com tcp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 98.102.226.129.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 yz.xlinyi.cn udp
CN 106.53.151.139:4625 yz.xlinyi.cn tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp

Files

memory/4324-0-0x000000000092A000-0x0000000000D5A000-memory.dmp

memory/4324-8-0x0000000000400000-0x0000000000F5E000-memory.dmp

memory/4324-7-0x00000000030C0000-0x00000000030C1000-memory.dmp

memory/4324-6-0x00000000030B0000-0x00000000030B1000-memory.dmp

memory/4324-5-0x00000000030A0000-0x00000000030A1000-memory.dmp

memory/4324-4-0x0000000003090000-0x0000000003091000-memory.dmp

memory/4324-3-0x0000000003080000-0x0000000003081000-memory.dmp

memory/4324-2-0x00000000016F0000-0x00000000016F1000-memory.dmp

memory/4324-1-0x00000000016E0000-0x00000000016E1000-memory.dmp

memory/4324-9-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-43-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-49-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-51-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-47-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-45-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-39-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-37-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-35-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-33-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-31-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-29-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-27-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-25-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-23-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-22-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-19-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-17-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-16-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-13-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-10-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-11-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-41-0x0000000010000000-0x000000001003E000-memory.dmp

memory/4324-52-0x000000000092A000-0x0000000000D5A000-memory.dmp