Malware Analysis Report

2024-11-16 15:42

Sample ID 240606-jbt6hscc45
Target b7ffabf8b6f922b5189f66a02ec733e07d46a3d32f700fa04c3f78672c4714df
SHA256 b7ffabf8b6f922b5189f66a02ec733e07d46a3d32f700fa04c3f78672c4714df
Tags
blackmoon upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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
10/10

SHA256

b7ffabf8b6f922b5189f66a02ec733e07d46a3d32f700fa04c3f78672c4714df

Threat Level: Known bad

The file b7ffabf8b6f922b5189f66a02ec733e07d46a3d32f700fa04c3f78672c4714df was found to be: Known bad.

Malicious Activity Summary

blackmoon upx

Blackmoon family

Detect Blackmoon payload

UPX packed file

Drops file in System32 directory

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-06 07:30

Signatures

Blackmoon family

blackmoon

Detect Blackmoon payload

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

2024-06-06 07:30

Reported

2024-06-06 07:33

Platform

win7-20240221-en

Max time kernel

120s

Max time network

125s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7ffabf8b6f922b5189f66a02ec733e07d46a3d32f700fa04c3f78672c4714df.dll,#1

Signatures

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Dult.dll C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1340 wrote to memory of 2668 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1340 wrote to memory of 2668 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1340 wrote to memory of 2668 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1340 wrote to memory of 2668 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1340 wrote to memory of 2668 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1340 wrote to memory of 2668 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1340 wrote to memory of 2668 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7ffabf8b6f922b5189f66a02ec733e07d46a3d32f700fa04c3f78672c4714df.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7ffabf8b6f922b5189f66a02ec733e07d46a3d32f700fa04c3f78672c4714df.dll,#1

Network

N/A

Files

memory/2668-0-0x00000000001C0000-0x00000000001D9000-memory.dmp

memory/2668-1-0x00000000001C0000-0x00000000001D9000-memory.dmp

memory/2668-3-0x00000000001C0000-0x00000000001D9000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-06 07:30

Reported

2024-06-06 07:33

Platform

win10v2004-20240426-en

Max time kernel

93s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7ffabf8b6f922b5189f66a02ec733e07d46a3d32f700fa04c3f78672c4714df.dll,#1

Signatures

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Dult.dll C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3496 wrote to memory of 1896 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3496 wrote to memory of 1896 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3496 wrote to memory of 1896 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7ffabf8b6f922b5189f66a02ec733e07d46a3d32f700fa04c3f78672c4714df.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7ffabf8b6f922b5189f66a02ec733e07d46a3d32f700fa04c3f78672c4714df.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/1896-0-0x0000000002000000-0x0000000002019000-memory.dmp

memory/1896-2-0x0000000002000000-0x0000000002019000-memory.dmp

memory/1896-3-0x0000000002000000-0x0000000002019000-memory.dmp