Malware Analysis Report

2024-08-06 07:57

Sample ID 231115-tc5czsdc21
Target 21df8fb4218ba741896eebf573a78e5b8e7f575b86d75de685c8e7a0d979ecab
SHA256 21df8fb4218ba741896eebf573a78e5b8e7f575b86d75de685c8e7a0d979ecab
Tags
cobaltstrike 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

21df8fb4218ba741896eebf573a78e5b8e7f575b86d75de685c8e7a0d979ecab

Threat Level: Known bad

The file 21df8fb4218ba741896eebf573a78e5b8e7f575b86d75de685c8e7a0d979ecab was found to be: Known bad.

Malicious Activity Summary

cobaltstrike 1359593325 backdoor trojan

Cobaltstrike

Unsigned PE

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2023-11-15 15:55

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-15 15:55

Reported

2023-11-15 15:58

Platform

win7-20231023-en

Max time kernel

141s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\21df8fb4218ba741896eebf573a78e5b8e7f575b86d75de685c8e7a0d979ecab.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Processes

C:\Users\Admin\AppData\Local\Temp\21df8fb4218ba741896eebf573a78e5b8e7f575b86d75de685c8e7a0d979ecab.exe

"C:\Users\Admin\AppData\Local\Temp\21df8fb4218ba741896eebf573a78e5b8e7f575b86d75de685c8e7a0d979ecab.exe"

Network

Country Destination Domain Proto
NL 192.236.146.5:80 tcp
NL 192.236.146.5:80 tcp
NL 192.236.146.5:80 tcp

Files

memory/2860-1-0x0000000000400000-0x0000000000458000-memory.dmp

memory/2860-0-0x0000000000230000-0x0000000000237000-memory.dmp

memory/2860-2-0x0000000000400000-0x0000000000458000-memory.dmp

memory/2860-3-0x0000000000460000-0x0000000000493000-memory.dmp

memory/2860-4-0x00000000004A0000-0x00000000004DD000-memory.dmp

memory/2860-5-0x0000000000400000-0x0000000000458000-memory.dmp

memory/2860-6-0x00000000747E0000-0x000000007482E000-memory.dmp

memory/2860-9-0x0000000000230000-0x0000000000237000-memory.dmp

memory/2860-12-0x00000000004A0000-0x00000000004DD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-15 15:55

Reported

2023-11-15 15:58

Platform

win10v2004-20231020-en

Max time kernel

141s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\21df8fb4218ba741896eebf573a78e5b8e7f575b86d75de685c8e7a0d979ecab.exe"

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeManageVolumePrivilege N/A C:\Windows\System32\svchost.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\21df8fb4218ba741896eebf573a78e5b8e7f575b86d75de685c8e7a0d979ecab.exe

"C:\Users\Admin\AppData\Local\Temp\21df8fb4218ba741896eebf573a78e5b8e7f575b86d75de685c8e7a0d979ecab.exe"

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k UnistackSvcGroup

Network

Country Destination Domain Proto
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 133.113.22.20.in-addr.arpa udp
US 8.8.8.8:53 198.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 135.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 25.14.97.104.in-addr.arpa udp
US 8.8.8.8:53 192.78.101.95.in-addr.arpa udp
NL 192.236.146.5:80 tcp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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 8.8.8.8:53 254.43.238.8.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
NL 192.236.146.5:80 tcp

Files

memory/1448-0-0x00000000005F0000-0x00000000005F7000-memory.dmp

memory/1448-1-0x0000000000400000-0x0000000000458000-memory.dmp

memory/1448-2-0x0000000000400000-0x0000000000458000-memory.dmp

memory/1448-3-0x00000000025F0000-0x0000000002623000-memory.dmp

memory/1448-4-0x00000000006D0000-0x000000000070D000-memory.dmp

memory/1448-5-0x0000000000400000-0x0000000000458000-memory.dmp

memory/1448-6-0x0000000075460000-0x00000000754CA000-memory.dmp

memory/1448-9-0x00000000005F0000-0x00000000005F7000-memory.dmp

memory/1448-10-0x00000000006D0000-0x000000000070D000-memory.dmp

memory/2024-17-0x000001FEB0D60000-0x000001FEB0D70000-memory.dmp

memory/2024-33-0x000001FEB0E60000-0x000001FEB0E70000-memory.dmp

memory/2024-49-0x000001FEB91D0000-0x000001FEB91D1000-memory.dmp

memory/2024-51-0x000001FEB9200000-0x000001FEB9201000-memory.dmp

memory/2024-52-0x000001FEB9200000-0x000001FEB9201000-memory.dmp

memory/2024-53-0x000001FEB9310000-0x000001FEB9311000-memory.dmp