Malware Analysis Report

2024-08-06 10:58

Sample ID 240519-ktq29abb92
Target d44560fcedcb1d69fefddc0ce0b3b8109e1598e2b415e292b76e8fd7700724e6.exe
SHA256 d44560fcedcb1d69fefddc0ce0b3b8109e1598e2b415e292b76e8fd7700724e6
Tags
cobaltstrike 100000 backdoor trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d44560fcedcb1d69fefddc0ce0b3b8109e1598e2b415e292b76e8fd7700724e6

Threat Level: Known bad

The file d44560fcedcb1d69fefddc0ce0b3b8109e1598e2b415e292b76e8fd7700724e6.exe was found to be: Known bad.

Malicious Activity Summary

cobaltstrike 100000 backdoor trojan

Cobaltstrike

Blocklisted process makes network request

Unsigned PE

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-19 08:54

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-19 08:53

Reported

2024-05-19 08:56

Platform

win10v2004-20240426-en

Max time kernel

148s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\d44560fcedcb1d69fefddc0ce0b3b8109e1598e2b415e292b76e8fd7700724e6.dll,#1

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\d44560fcedcb1d69fefddc0ce0b3b8109e1598e2b415e292b76e8fd7700724e6.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
NL 23.62.61.129:443 www.bing.com tcp
CN 120.26.36.197:443 tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
CN 120.26.36.197:443 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
CN 120.26.36.197:443 tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
CN 120.26.36.197:443 tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
CN 120.26.36.197:443 tcp
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
CN 120.26.36.197:443 tcp
US 8.8.8.8:53 25.173.189.20.in-addr.arpa udp

Files

memory/964-1-0x0000019816780000-0x00000198167CF000-memory.dmp

memory/964-0-0x00000198167E0000-0x00000198177E0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-19 08:53

Reported

2024-05-19 08:56

Platform

win7-20240215-en

Max time kernel

140s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\d44560fcedcb1d69fefddc0ce0b3b8109e1598e2b415e292b76e8fd7700724e6.dll,#1

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\d44560fcedcb1d69fefddc0ce0b3b8109e1598e2b415e292b76e8fd7700724e6.dll,#1

Network

Country Destination Domain Proto
CN 120.26.36.197:443 tcp
CN 120.26.36.197:443 tcp
CN 120.26.36.197:443 tcp
CN 120.26.36.197:443 tcp
CN 120.26.36.197:443 tcp
CN 120.26.36.197:443 tcp
CN 120.26.36.197:443 tcp

Files

memory/2028-1-0x0000000022750000-0x000000002279F000-memory.dmp

memory/2028-0-0x0000000002030000-0x0000000003030000-memory.dmp