Malware Analysis Report

2024-10-18 21:02

Sample ID 231222-djr38sbge8
Target 5846789565ba970c2805bbf5fb1a5b5b
SHA256 e16da7ccdfd691ea919b69ab74f26cb56958faba2aa142fbe6be49d080c23aeb
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

e16da7ccdfd691ea919b69ab74f26cb56958faba2aa142fbe6be49d080c23aeb

Threat Level: Known bad

The file 5846789565ba970c2805bbf5fb1a5b5b 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 03:02

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-22 03:02

Reported

2023-12-23 06:34

Platform

win7-20231215-en

Max time kernel

122s

Max time network

125s

Command Line

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\5846789565ba970c2805bbf5fb1a5b5b.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\5846789565ba970c2805bbf5fb1a5b5b.ps1

Network

N/A

Files

memory/1748-4-0x000000001B190000-0x000000001B472000-memory.dmp

memory/1748-5-0x0000000001ED0000-0x0000000001ED8000-memory.dmp

memory/1748-6-0x000007FEF5C50000-0x000007FEF65ED000-memory.dmp

memory/1748-7-0x0000000002830000-0x00000000028B0000-memory.dmp

memory/1748-8-0x000007FEF5C50000-0x000007FEF65ED000-memory.dmp

memory/1748-9-0x0000000002830000-0x00000000028B0000-memory.dmp

memory/1748-10-0x0000000002830000-0x00000000028B0000-memory.dmp

memory/1748-11-0x000007FEF5C50000-0x000007FEF65ED000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-22 03:02

Reported

2023-12-23 06:34

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\5846789565ba970c2805bbf5fb1a5b5b.ps1

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2744 set thread context of 5076 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 2744 wrote to memory of 5076 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2744 wrote to memory of 5076 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2744 wrote to memory of 5076 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2744 wrote to memory of 5076 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2744 wrote to memory of 5076 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2744 wrote to memory of 5076 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2744 wrote to memory of 5076 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2744 wrote to memory of 5076 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2744 wrote to memory of 5076 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\5846789565ba970c2805bbf5fb1a5b5b.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 432 -p 5076 -ip 5076

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 1068

Network

Country Destination Domain Proto
US 8.8.8.8:53 23.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.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 8.8.8.8:53 173.178.17.96.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 138.91.171.81:80 tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 23.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.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 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 211.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
US 8.8.8.8:53 udp
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 96.16.110.114:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.180:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.180:80 tcp
GB 96.17.178.180:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa 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
N/A 52.111.243.31:443 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 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 27.73.42.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_j4veriip.4w3.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2744-12-0x000001FDCAC10000-0x000001FDCAC20000-memory.dmp

memory/2744-11-0x000001FDCAC10000-0x000001FDCAC20000-memory.dmp

memory/2744-10-0x00007FFE65500000-0x00007FFE65FC1000-memory.dmp

memory/2744-2-0x000001FDB2690000-0x000001FDB26B2000-memory.dmp

memory/2744-13-0x000001FDB26F0000-0x000001FDB2716000-memory.dmp

memory/2744-23-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-53-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/5076-55-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2744-58-0x000001FDCAC10000-0x000001FDCAC20000-memory.dmp

memory/5076-62-0x0000000000400000-0x0000000000438000-memory.dmp

memory/5076-61-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2744-60-0x00007FFE65500000-0x00007FFE65FC1000-memory.dmp

memory/5076-59-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2744-54-0x000001FDB2560000-0x000001FDB2561000-memory.dmp

memory/2744-51-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-49-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-47-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-45-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-43-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-41-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-39-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-37-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-35-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-33-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-31-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-29-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-27-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-25-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-21-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-19-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-17-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-15-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/2744-14-0x000001FDB26F0000-0x000001FDB2710000-memory.dmp

memory/5076-65-0x0000000000400000-0x0000000000438000-memory.dmp