Malware Analysis Report

2024-10-18 21:03

Sample ID 231222-qgdjaaehgr
Target 9c226145547ce4265b7cdaf7c5e0cb39
SHA256 072611cbd21330320b51fb7e49a58d2810f81c4f4a923f5af91b97b91052dbde
Tags
oski infostealer
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

072611cbd21330320b51fb7e49a58d2810f81c4f4a923f5af91b97b91052dbde

Threat Level: Known bad

The file 9c226145547ce4265b7cdaf7c5e0cb39 was found to be: Known bad.

Malicious Activity Summary

oski infostealer

Oski

Suspicious use of SetThreadContext

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-22 13:13

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-22 13:13

Reported

2023-12-22 14:16

Platform

win7-20231215-en

Max time kernel

121s

Max time network

125s

Command Line

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\9c226145547ce4265b7cdaf7c5e0cb39.ps1

Signatures

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\9c226145547ce4265b7cdaf7c5e0cb39.ps1

Network

N/A

Files

memory/2012-4-0x000000001B450000-0x000000001B732000-memory.dmp

memory/2012-5-0x0000000002320000-0x0000000002328000-memory.dmp

memory/2012-6-0x000007FEF5660000-0x000007FEF5FFD000-memory.dmp

memory/2012-9-0x0000000002AC0000-0x0000000002B40000-memory.dmp

memory/2012-8-0x0000000002AC0000-0x0000000002B40000-memory.dmp

memory/2012-7-0x0000000002AC0000-0x0000000002B40000-memory.dmp

memory/2012-11-0x0000000002AC0000-0x0000000002B40000-memory.dmp

memory/2012-10-0x000007FEF5660000-0x000007FEF5FFD000-memory.dmp

memory/2012-12-0x0000000002AC0000-0x0000000002B40000-memory.dmp

memory/2012-13-0x000007FEF5660000-0x000007FEF5FFD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-22 13:13

Reported

2023-12-22 14:16

Platform

win10v2004-20231215-en

Max time kernel

149s

Max time network

152s

Command Line

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\9c226145547ce4265b7cdaf7c5e0cb39.ps1

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2292 set thread context of 3120 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2292 wrote to memory of 3120 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2292 wrote to memory of 3120 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2292 wrote to memory of 3120 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2292 wrote to memory of 3120 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2292 wrote to memory of 3120 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2292 wrote to memory of 3120 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2292 wrote to memory of 3120 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2292 wrote to memory of 3120 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2292 wrote to memory of 3120 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

Processes

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

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\9c226145547ce4265b7cdaf7c5e0cb39.ps1

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe

#cmd

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3120 -ip 3120

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3120 -s 1216

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
VN 103.114.107.28:80 tcp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
US 8.8.8.8:53 16.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
VN 103.114.107.28:80 tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
VN 103.114.107.28:80 tcp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
VN 103.114.107.28:80 tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
VN 103.114.107.28:80 tcp
US 8.8.8.8:53 14.227.111.52.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 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
VN 103.114.107.28:80 tcp
VN 103.114.107.28:80 tcp

Files

memory/2292-9-0x000001FC55E40000-0x000001FC55E62000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oy3turo3.2ha.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2292-10-0x00007FFA76D40000-0x00007FFA77801000-memory.dmp

memory/2292-12-0x000001FC55F00000-0x000001FC55F10000-memory.dmp

memory/2292-11-0x000001FC55F00000-0x000001FC55F10000-memory.dmp

memory/2292-13-0x000001FC55E70000-0x000001FC55E96000-memory.dmp

memory/2292-15-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-45-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-43-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-47-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-53-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/3120-55-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3120-62-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2292-61-0x00007FFA76D40000-0x00007FFA77801000-memory.dmp

memory/3120-60-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3120-57-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2292-56-0x000001FC55F00000-0x000001FC55F10000-memory.dmp

memory/2292-54-0x000001FC3D9E0000-0x000001FC3D9E1000-memory.dmp

memory/2292-51-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-49-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-41-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-39-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-37-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-35-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-33-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-31-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-29-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-27-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-25-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-23-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-21-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-19-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-17-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/2292-14-0x000001FC55E70000-0x000001FC55E90000-memory.dmp

memory/3120-63-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3120-66-0x0000000000400000-0x0000000000438000-memory.dmp