Malware Analysis Report

2024-10-18 21:03

Sample ID 231222-fpq48sada5
Target 6da1d6a255fe2098408c3c889a4e157e
SHA256 b049e62984463f3760413281748176a3aba8966e912702088ce33a52db0a4fd7
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

b049e62984463f3760413281748176a3aba8966e912702088ce33a52db0a4fd7

Threat Level: Known bad

The file 6da1d6a255fe2098408c3c889a4e157e was found to be: Known bad.

Malicious Activity Summary

oski infostealer

Oski

Suspicious use of SetThreadContext

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-22 05:03

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-22 05:03

Reported

2023-12-23 10:12

Platform

win7-20231215-en

Max time kernel

120s

Max time network

120s

Command Line

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\6da1d6a255fe2098408c3c889a4e157e.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\6da1d6a255fe2098408c3c889a4e157e.ps1

Network

N/A

Files

memory/2652-4-0x000000001B650000-0x000000001B932000-memory.dmp

memory/2652-5-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

memory/2652-6-0x000007FEF5B90000-0x000007FEF652D000-memory.dmp

memory/2652-7-0x0000000001F00000-0x0000000001F80000-memory.dmp

memory/2652-8-0x000007FEF5B90000-0x000007FEF652D000-memory.dmp

memory/2652-11-0x0000000001F00000-0x0000000001F80000-memory.dmp

memory/2652-10-0x0000000001F00000-0x0000000001F80000-memory.dmp

memory/2652-9-0x0000000001F00000-0x0000000001F80000-memory.dmp

memory/2652-12-0x0000000001F00000-0x0000000001F80000-memory.dmp

memory/2652-13-0x000007FEF5B90000-0x000007FEF652D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-22 05:03

Reported

2023-12-23 10:12

Platform

win10v2004-20231215-en

Max time kernel

149s

Max time network

150s

Command Line

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\6da1d6a255fe2098408c3c889a4e157e.ps1

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2900 set thread context of 5100 N/A N/A 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 2900 wrote to memory of 5100 N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2900 wrote to memory of 5100 N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2900 wrote to memory of 5100 N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2900 wrote to memory of 5100 N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2900 wrote to memory of 5100 N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2900 wrote to memory of 5100 N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2900 wrote to memory of 5100 N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2900 wrote to memory of 5100 N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2900 wrote to memory of 5100 N/A N/A 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\6da1d6a255fe2098408c3c889a4e157e.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 404 -p 5100 -ip 5100

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5100 -s 1064

Network

Country Destination Domain Proto
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 4.181.190.20.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 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.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 2.136.104.51.in-addr.arpa udp
IE 20.223.36.55:443 tcp
IE 20.223.36.55:443 tcp
IE 20.223.36.55:443 tcp
US 8.8.8.8:53 udp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
N/A 93.184.221.240:80 tcp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 88.221.134.18:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 88.221.134.18:80 tcp
GB 88.221.134.18:80 tcp
GB 88.221.134.18:80 tcp
GB 88.221.134.18:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
N/A 88.221.134.32:80 tcp
GB 88.221.134.18:80 tcp
N/A 88.221.134.32:80 tcp
US 8.8.8.8:53 udp
GB 88.221.134.18:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 88.221.134.18:80 tcp
GB 88.221.134.18:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 88.221.135.217:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
N/A 20.199.58.43:443 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp

Files

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ntkef0c4.c0f.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2900-12-0x000001B7AA180000-0x000001B7AA190000-memory.dmp

memory/2900-11-0x000001B7AA180000-0x000001B7AA190000-memory.dmp

memory/2900-10-0x00007FFBE3900000-0x00007FFBE43C1000-memory.dmp

memory/2900-9-0x000001B7C4790000-0x000001B7C47B2000-memory.dmp

memory/2900-13-0x000001B7AA1B0000-0x000001B7AA1D6000-memory.dmp

memory/2900-33-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-53-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/5100-55-0x0000000000400000-0x0000000000438000-memory.dmp

memory/5100-62-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2900-61-0x00007FFBE3900000-0x00007FFBE43C1000-memory.dmp

memory/5100-60-0x0000000000400000-0x0000000000438000-memory.dmp

memory/5100-57-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2900-56-0x000001B7AA180000-0x000001B7AA190000-memory.dmp

memory/2900-54-0x000001B7C49C0000-0x000001B7C49C1000-memory.dmp

memory/2900-51-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-49-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-47-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-45-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-43-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-41-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-39-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-37-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-35-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-31-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-29-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-27-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-25-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-23-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-21-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/5100-65-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2900-19-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-17-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-15-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp

memory/2900-14-0x000001B7AA1B0000-0x000001B7AA1D0000-memory.dmp