Malware Analysis Report

2024-08-06 07:55

Sample ID 231120-jzdhnsef29
Target 48af8b20014311734d641a8069a5f4323e059241a30038cc677e51a81f2e8970
SHA256 48af8b20014311734d641a8069a5f4323e059241a30038cc677e51a81f2e8970
Tags
cobaltstrike 0 1359593325 backdoor trojan
score
10/10

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
10/10

SHA256

48af8b20014311734d641a8069a5f4323e059241a30038cc677e51a81f2e8970

Threat Level: Known bad

The file 48af8b20014311734d641a8069a5f4323e059241a30038cc677e51a81f2e8970 was found to be: Known bad.

Malicious Activity Summary

cobaltstrike 0 1359593325 backdoor trojan

Cobaltstrike

Blocklisted process makes network request

Unsigned PE

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2023-11-20 08:06

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-20 08:06

Reported

2023-11-20 08:08

Platform

win7-20231023-en

Max time kernel

150s

Max time network

153s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\48af8b20014311734d641a8069a5f4323e059241a30038cc677e51a81f2e8970.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
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\48af8b20014311734d641a8069a5f4323e059241a30038cc677e51a81f2e8970.dll,#1

Network

Country Destination Domain Proto
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp

Files

memory/2188-0-0x0000000074C60000-0x0000000074FCD000-memory.dmp

memory/2188-5-0x0000000074C60000-0x0000000074FCD000-memory.dmp

memory/2188-6-0x0000000001CA0000-0x0000000001CA1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab4A0D.tmp

MD5 f3441b8572aae8801c04f3060b550443
SHA1 4ef0a35436125d6821831ef36c28ffaf196cda15
SHA256 6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
SHA512 5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

memory/2188-23-0x0000000074C60000-0x0000000074FCD000-memory.dmp

memory/2188-25-0x0000000028EB0000-0x00000000292B0000-memory.dmp

memory/2188-24-0x000007FEF7030000-0x000007FEF70DC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Tar767C.tmp

MD5 9441737383d21192400eca82fda910ec
SHA1 725e0d606a4fc9ba44aa8ffde65bed15e65367e4
SHA256 bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5
SHA512 7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

memory/2188-45-0x000007FEF7030000-0x000007FEF70DC000-memory.dmp

memory/2188-65-0x000007FEF7030000-0x000007FEF70DC000-memory.dmp

memory/2188-66-0x0000000028EB0000-0x00000000292B0000-memory.dmp

memory/2188-143-0x0000000074C60000-0x0000000074FCD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-20 08:06

Reported

2023-11-20 08:08

Platform

win10v2004-20231023-en

Max time kernel

147s

Max time network

156s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\48af8b20014311734d641a8069a5f4323e059241a30038cc677e51a81f2e8970.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
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
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\48af8b20014311734d641a8069a5f4323e059241a30038cc677e51a81f2e8970.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 122.175.53.84.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.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 8.8.8.8:53 240.221.184.93.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 204.79.197.200:443 tse1.mm.bing.net tcp
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 107.151.245.165:8444 outlook.live.com tcp
US 8.8.8.8:53 165.245.151.107.in-addr.arpa udp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp
US 8.8.8.8:53 8.179.89.13.in-addr.arpa udp
US 107.151.245.165:8444 outlook.live.com tcp
US 107.151.245.165:8444 outlook.live.com tcp

Files

memory/2196-0-0x000000005C400000-0x000000005C76D000-memory.dmp

memory/2196-6-0x0000015DD1740000-0x0000015DD1741000-memory.dmp

memory/2196-5-0x000000005C400000-0x000000005C76D000-memory.dmp

memory/2196-7-0x00007FF83F1B0000-0x00007FF83F23D000-memory.dmp

memory/2196-8-0x0000015DF7690000-0x0000015DF7A90000-memory.dmp

memory/2196-10-0x00007FF83F1B0000-0x00007FF83F23D000-memory.dmp

memory/2196-12-0x00007FF83F1B0000-0x00007FF83F23D000-memory.dmp

memory/2196-13-0x0000015DF7690000-0x0000015DF7A90000-memory.dmp

memory/2196-15-0x00007FF83F1B0000-0x00007FF83F23D000-memory.dmp

memory/2196-17-0x00007FF83F1B0000-0x00007FF83F23D000-memory.dmp

memory/2196-19-0x00007FF83F1B0000-0x00007FF83F23D000-memory.dmp

memory/2196-20-0x000000005C400000-0x000000005C76D000-memory.dmp

memory/2196-21-0x00007FF83F1B0000-0x00007FF83F23D000-memory.dmp

memory/2196-23-0x00007FF83F1B0000-0x00007FF83F23D000-memory.dmp

memory/2196-25-0x00007FF83F1B0000-0x00007FF83F23D000-memory.dmp