Malware Analysis Report

2025-08-05 14:15

Sample ID 240305-nza5rseh74
Target b4a178f81cea722e3cf6fe060ede84d0
SHA256 bd5dc63a79db22b93c9a553eaebb4b800f849b200792e3681bb795d8cbbd3c79
Tags
cobaltstrike 1501634718 backdoor trojan
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

bd5dc63a79db22b93c9a553eaebb4b800f849b200792e3681bb795d8cbbd3c79

Threat Level: Known bad

The file b4a178f81cea722e3cf6fe060ede84d0 was found to be: Known bad.

Malicious Activity Summary

cobaltstrike 1501634718 backdoor trojan

Cobaltstrike

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-05 11:49

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-05 11:49

Reported

2024-03-05 11:52

Platform

win7-20240221-en

Max time kernel

124s

Max time network

127s

Command Line

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\b4a178f81cea722e3cf6fe060ede84d0.ps1

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\b4a178f81cea722e3cf6fe060ede84d0.ps1

Network

Country Destination Domain Proto
US 8.8.8.8:53 golfcdn.com udp

Files

memory/2012-5-0x000007FEF59D0000-0x000007FEF636D000-memory.dmp

memory/2012-4-0x000000001B490000-0x000000001B772000-memory.dmp

memory/2012-6-0x0000000002B40000-0x0000000002BC0000-memory.dmp

memory/2012-7-0x0000000002310000-0x0000000002318000-memory.dmp

memory/2012-8-0x000007FEF59D0000-0x000007FEF636D000-memory.dmp

memory/2012-10-0x0000000002B40000-0x0000000002BC0000-memory.dmp

memory/2012-9-0x0000000002B40000-0x0000000002BC0000-memory.dmp

memory/2012-11-0x0000000002B40000-0x0000000002BC0000-memory.dmp

memory/2012-13-0x0000000002AC0000-0x0000000002B01000-memory.dmp

memory/2012-12-0x000000001CA60000-0x000000001CED2000-memory.dmp

memory/2012-14-0x000000001CA60000-0x000000001CED2000-memory.dmp

memory/2012-15-0x000007FEF59D0000-0x000007FEF636D000-memory.dmp

memory/2012-16-0x0000000002B40000-0x0000000002BC0000-memory.dmp

memory/2012-17-0x0000000002B40000-0x0000000002BC0000-memory.dmp

memory/2012-18-0x0000000002B40000-0x0000000002BC0000-memory.dmp

memory/2012-19-0x0000000002B40000-0x0000000002BC0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-05 11:49

Reported

2024-03-05 11:52

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

155s

Command Line

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\b4a178f81cea722e3cf6fe060ede84d0.ps1

Signatures

Cobaltstrike

trojan backdoor cobaltstrike

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\b4a178f81cea722e3cf6fe060ede84d0.ps1

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4936 --field-trial-handle=2276,i,1205556100727695622,5044463180471657307,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 golfcdn.com udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 188.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 50.134.221.88.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 golfcdn.com udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 179.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 golfcdn.com udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 34.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 204.178.17.96.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 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 golfcdn.com udp
GB 96.17.178.204:80 tcp

Files

memory/2248-5-0x00000237284D0000-0x00000237284F2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bhgkduax.3nu.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2248-10-0x00007FF9F5170000-0x00007FF9F5C31000-memory.dmp

memory/2248-11-0x00000237409F0000-0x0000023740A00000-memory.dmp

memory/2248-12-0x00000237409F0000-0x0000023740A00000-memory.dmp

memory/2248-13-0x00000237417B0000-0x0000023741C22000-memory.dmp

memory/2248-14-0x0000023741760000-0x00000237417A1000-memory.dmp

memory/2248-15-0x00000237417B0000-0x0000023741C22000-memory.dmp

memory/2248-16-0x00007FF9F5170000-0x00007FF9F5C31000-memory.dmp

memory/2248-17-0x00000237409F0000-0x0000023740A00000-memory.dmp

memory/2248-18-0x0000023741760000-0x00000237417A1000-memory.dmp