Malware Analysis Report

2024-07-28 11:03

Sample ID 240626-3c1t8szdpb
Target fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f
SHA256 fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f
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

fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f

Threat Level: Likely malicious

The file fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f 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)

Unsigned PE

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

2024-06-26 23:22

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

2024-06-26 23:22

Reported

2024-06-26 23:25

Platform

win7-20240508-en

Max time kernel

121s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe"

Signatures

detect oss ak

oss_ak
Description Indicator Process Target
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UPX packed file

upx
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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\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe

"C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe"

Network

Country Destination Domain Proto
CN 122.51.207.195:9010 tcp
CN 122.51.207.195:9010 tcp

Files

memory/1376-0-0x00000000006F1000-0x00000000006F2000-memory.dmp

memory/1376-3-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-11-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-21-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-40-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-45-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/1376-44-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-42-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-38-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-36-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-34-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-32-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-30-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-29-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/1376-27-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-25-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-23-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-19-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-17-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-15-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-13-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-9-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-7-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-5-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-2-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-47-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/1376-1-0x0000000000380000-0x00000000003BE000-memory.dmp

memory/1376-49-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/1376-50-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/1376-48-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/1376-51-0x0000000000400000-0x0000000000AC7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-26 23:22

Reported

2024-06-26 23:25

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

52s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.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\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe

"C:\Users\Admin\AppData\Local\Temp\fc8f9ee2ab1ca6caf1c09e07794cc19fba2285f47ec11823d659f335686b476f.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
CN 122.51.207.195:9010 tcp
CN 122.51.207.195:9010 tcp

Files

memory/2516-0-0x00000000006F1000-0x00000000006F2000-memory.dmp

memory/2516-31-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-35-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-43-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-46-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/2516-47-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/2516-45-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/2516-48-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/2516-41-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-39-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-37-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-33-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-29-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-27-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-23-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-17-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-9-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-7-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-3-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-2-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-1-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-25-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-21-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-19-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-15-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-13-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-11-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-5-0x0000000002920000-0x000000000295E000-memory.dmp

memory/2516-49-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/2516-50-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/2516-51-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/2516-52-0x0000000000400000-0x0000000000AC7000-memory.dmp

memory/2516-53-0x0000000000400000-0x0000000000AC7000-memory.dmp