Malware Analysis Report

2024-09-22 21:51

Sample ID 240118-jbd5asfafp
Target 64d23d2c0284efd48e19cc4f73d5066c
SHA256 295af57bf8cf7f6064c050254187ad87ea601143eac3a773e07fc2cbcb59be48
Tags
oski infostealer spyware stealer
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

295af57bf8cf7f6064c050254187ad87ea601143eac3a773e07fc2cbcb59be48

Threat Level: Known bad

The file 64d23d2c0284efd48e19cc4f73d5066c was found to be: Known bad.

Malicious Activity Summary

oski infostealer spyware stealer

Oski

Checks computer location settings

Reads user/profile data of web browsers

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-01-18 07:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-18 07:29

Reported

2024-01-18 07:31

Platform

win7-20231215-en

Max time kernel

120s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2540 set thread context of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2540 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\schtasks.exe
PID 2540 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\schtasks.exe
PID 2540 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\schtasks.exe
PID 2540 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\schtasks.exe
PID 2540 wrote to memory of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2540 wrote to memory of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2540 wrote to memory of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2540 wrote to memory of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2540 wrote to memory of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2540 wrote to memory of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2540 wrote to memory of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2540 wrote to memory of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2540 wrote to memory of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2540 wrote to memory of 1872 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 1872 wrote to memory of 764 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\WerFault.exe
PID 1872 wrote to memory of 764 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\WerFault.exe
PID 1872 wrote to memory of 764 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\WerFault.exe
PID 1872 wrote to memory of 764 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe

"C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JgQxbKQq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp80C.tmp"

C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe

"C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1872 -s 768

Network

Country Destination Domain Proto
US 8.8.8.8:53 hikark.xyz udp

Files

memory/2540-0-0x0000000000340000-0x00000000003E2000-memory.dmp

memory/2540-1-0x0000000074BE0000-0x00000000752CE000-memory.dmp

memory/2540-2-0x0000000004800000-0x0000000004840000-memory.dmp

memory/2540-3-0x00000000004C0000-0x00000000004DC000-memory.dmp

memory/2540-4-0x0000000074BE0000-0x00000000752CE000-memory.dmp

memory/2540-5-0x0000000004800000-0x0000000004840000-memory.dmp

memory/2540-6-0x0000000004E50000-0x0000000004EBC000-memory.dmp

memory/2540-7-0x0000000000A60000-0x0000000000A9C000-memory.dmp

memory/1872-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1872-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1872-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1872-18-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1872-20-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1872-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1872-23-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1872-25-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2540-26-0x0000000074BE0000-0x00000000752CE000-memory.dmp

memory/1872-27-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1872-29-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-18 07:29

Reported

2024-01-18 07:32

Platform

win10v2004-20231215-en

Max time kernel

142s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"

Signatures

Oski

infostealer oski

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe N/A

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2528 set thread context of 4768 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2528 wrote to memory of 1900 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\schtasks.exe
PID 2528 wrote to memory of 1900 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\schtasks.exe
PID 2528 wrote to memory of 1900 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Windows\SysWOW64\schtasks.exe
PID 2528 wrote to memory of 4584 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4584 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4584 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4964 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4964 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4964 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4768 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4768 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4768 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4768 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4768 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4768 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4768 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4768 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
PID 2528 wrote to memory of 4768 N/A C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe

Processes

C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe

"C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JgQxbKQq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp25F2.tmp"

C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe

"C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"

C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe

"C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"

C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe

"C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4768 -ip 4768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 1276

Network

Country Destination Domain Proto
US 20.231.121.79:80 tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 82.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 hikark.xyz udp
US 8.8.8.8:53 3.173.189.20.in-addr.arpa udp

Files

memory/2528-0-0x0000000000680000-0x0000000000722000-memory.dmp

memory/2528-1-0x0000000074E70000-0x0000000075620000-memory.dmp

memory/2528-2-0x00000000051F0000-0x0000000005200000-memory.dmp

memory/2528-3-0x00000000052A0000-0x0000000005332000-memory.dmp

memory/2528-4-0x00000000058F0000-0x0000000005E94000-memory.dmp

memory/2528-5-0x0000000005270000-0x000000000528C000-memory.dmp

memory/2528-6-0x00000000053E0000-0x000000000547C000-memory.dmp

memory/2528-7-0x0000000074E70000-0x0000000075620000-memory.dmp

memory/2528-8-0x00000000051F0000-0x0000000005200000-memory.dmp

memory/2528-9-0x00000000060D0000-0x000000000613C000-memory.dmp

memory/2528-10-0x0000000008600000-0x000000000863C000-memory.dmp

memory/4768-16-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4768-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4768-18-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4768-20-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2528-21-0x0000000074E70000-0x0000000075620000-memory.dmp

memory/4768-24-0x0000000000400000-0x0000000000438000-memory.dmp