Malware Analysis Report

2025-01-22 12:25

Sample ID 240515-xzrl7afh89
Target c52557ba95a457c0e4de753c8fec1771faf094f0717934e3ef1b20cfdf200a42
SHA256 c52557ba95a457c0e4de753c8fec1771faf094f0717934e3ef1b20cfdf200a42
Tags
aspackv2 blackmoon banker trojan 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

c52557ba95a457c0e4de753c8fec1771faf094f0717934e3ef1b20cfdf200a42

Threat Level: Known bad

The file c52557ba95a457c0e4de753c8fec1771faf094f0717934e3ef1b20cfdf200a42 was found to be: Known bad.

Malicious Activity Summary

aspackv2 blackmoon banker trojan upx

Blackmoon, KrBanker

Detect Blackmoon payload

UPX packed file

ASPack v2.12-2.42

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-15 19:17

Signatures

ASPack v2.12-2.42

aspackv2
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

2024-05-15 19:17

Reported

2024-05-15 19:20

Platform

win7-20240508-en

Max time kernel

120s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c52557ba95a457c0e4de753c8fec1771faf094f0717934e3ef1b20cfdf200a42.dll,#1

Signatures

Blackmoon, KrBanker

trojan banker blackmoon

Detect Blackmoon payload

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

UPX packed file

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1920 wrote to memory of 2788 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1920 wrote to memory of 2788 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1920 wrote to memory of 2788 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1920 wrote to memory of 2788 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1920 wrote to memory of 2788 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1920 wrote to memory of 2788 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1920 wrote to memory of 2788 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\c52557ba95a457c0e4de753c8fec1771faf094f0717934e3ef1b20cfdf200a42.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c52557ba95a457c0e4de753c8fec1771faf094f0717934e3ef1b20cfdf200a42.dll,#1

Network

N/A

Files

memory/2788-1-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2788-3-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2788-4-0x000000001002D000-0x000000001002E000-memory.dmp

memory/2788-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2788-2-0x00000000001C0000-0x00000000001CB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-15 19:17

Reported

2024-05-15 19:20

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

154s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c52557ba95a457c0e4de753c8fec1771faf094f0717934e3ef1b20cfdf200a42.dll,#1

Signatures

Blackmoon, KrBanker

trojan banker blackmoon

Detect Blackmoon payload

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

UPX packed file

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2020 wrote to memory of 2924 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2020 wrote to memory of 2924 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2020 wrote to memory of 2924 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\c52557ba95a457c0e4de753c8fec1771faf094f0717934e3ef1b20cfdf200a42.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c52557ba95a457c0e4de753c8fec1771faf094f0717934e3ef1b20cfdf200a42.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 204.79.197.237:443 g.bing.com tcp
BE 2.17.196.152:443 www.bing.com tcp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
BE 2.17.196.152:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 152.196.17.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 32.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 175.117.168.52.in-addr.arpa udp

Files

memory/2924-2-0x00000000012B0000-0x00000000012BB000-memory.dmp

memory/2924-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2924-1-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2924-4-0x00000000012B0000-0x00000000012BB000-memory.dmp

memory/2924-3-0x0000000010000000-0x0000000010030000-memory.dmp