Malware Analysis Report

2025-01-03 04:55

Sample ID 220421-xywjrafdg6
Target FLP_5012_306_171.exe
SHA256 7376932014797e4b7f5a1c4776d865e1ba03cba69d9811f11a449c188157c918
Tags
oski infostealer spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

7376932014797e4b7f5a1c4776d865e1ba03cba69d9811f11a449c188157c918

Threat Level: Known bad

The file FLP_5012_306_171.exe was found to be: Known bad.

Malicious Activity Summary

oski infostealer spyware stealer

Oski

Reads user/profile data of web browsers

Suspicious use of SetThreadContext

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-04-21 19:16

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-21 19:16

Reported

2022-04-21 19:19

Platform

win10v2004-20220414-en

Max time kernel

143s

Max time network

182s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2528 set thread context of 4740 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2528 wrote to memory of 4748 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4748 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4748 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 2528 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

Processes

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

"C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe"

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4740 -ip 4740

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4740 -s 1340

Network

Country Destination Domain Proto
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 8.238.111.254:80 tcp
GB 51.105.71.136:443 tcp
US 8.238.111.254:80 tcp
US 8.238.111.254:80 tcp
US 8.238.111.254:80 tcp
US 93.184.220.29:80 tcp
US 204.79.197.203:80 tcp
US 8.8.8.8:53 14.110.152.52.in-addr.arpa udp
US 8.8.8.8:53 5azc.xyz udp

Files

memory/2528-130-0x0000000000510000-0x0000000000572000-memory.dmp

memory/2528-131-0x0000000004F30000-0x0000000004FA6000-memory.dmp

memory/2528-132-0x0000000004EE0000-0x0000000004EFE000-memory.dmp

memory/4748-133-0x0000000000000000-mapping.dmp

memory/4740-134-0x0000000000000000-mapping.dmp

memory/4740-135-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4740-136-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4740-137-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4740-138-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-21 19:16

Reported

2022-04-21 19:18

Platform

win7-20220414-en

Max time kernel

93s

Max time network

98s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1668 set thread context of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1668 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1668 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1668 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1668 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1668 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1668 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1668 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1668 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1668 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1668 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1712 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Windows\SysWOW64\WerFault.exe
PID 1712 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Windows\SysWOW64\WerFault.exe
PID 1712 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Windows\SysWOW64\WerFault.exe
PID 1712 wrote to memory of 588 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

"C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe"

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 792

Network

Country Destination Domain Proto
US 8.8.8.8:53 5azc.xyz udp

Files

memory/1668-54-0x0000000000920000-0x0000000000982000-memory.dmp

memory/1668-55-0x0000000000460000-0x000000000046A000-memory.dmp

memory/1668-56-0x00000000004E0000-0x0000000000506000-memory.dmp

memory/1668-57-0x00000000762C1000-0x00000000762C3000-memory.dmp

memory/1712-58-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1712-59-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1712-61-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1712-63-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1712-65-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1712-67-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1712-68-0x000000000040717B-mapping.dmp

memory/1712-70-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1712-72-0x0000000000400000-0x0000000000438000-memory.dmp

memory/588-73-0x0000000000000000-mapping.dmp