Malware Analysis Report

2025-01-03 04:56

Sample ID 220404-mydntsdfg9
Target fatura comercial - Indaco EX20858 - OC00015.e.exe
SHA256 14a2149ffb9dc7a2bfa96e92ee4d7052222d5550431ffebc471b31859b397024
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

14a2149ffb9dc7a2bfa96e92ee4d7052222d5550431ffebc471b31859b397024

Threat Level: Known bad

The file fatura comercial - Indaco EX20858 - OC00015.e.exe 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

2022-04-04 10:52

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-04 10:52

Reported

2022-04-04 10:54

Platform

win7-20220331-en

Max time kernel

45s

Max time network

45s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe"

Signatures

Oski

infostealer oski

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1164 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 1164 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 1164 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 1164 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 1164 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 1164 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 1164 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 1164 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 1164 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 1164 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 1532 wrote to memory of 1248 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Windows\SysWOW64\WerFault.exe
PID 1532 wrote to memory of 1248 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Windows\SysWOW64\WerFault.exe
PID 1532 wrote to memory of 1248 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Windows\SysWOW64\WerFault.exe
PID 1532 wrote to memory of 1248 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe

"C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe"

C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe

"C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1532 -s 112

Network

N/A

Files

memory/1164-54-0x0000000000D20000-0x0000000000DF8000-memory.dmp

memory/1164-55-0x0000000000610000-0x000000000061C000-memory.dmp

memory/1164-56-0x00000000058B0000-0x000000000596A000-memory.dmp

memory/1164-57-0x0000000004FA0000-0x000000000501A000-memory.dmp

memory/1532-58-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1532-59-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1532-61-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1532-65-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1532-63-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1532-67-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1532-68-0x000000000040717B-mapping.dmp

memory/1532-70-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1248-71-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-04 10:52

Reported

2022-04-04 10:54

Platform

win10v2004-20220331-en

Max time kernel

91s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe"

Signatures

Oski

infostealer oski

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3404 wrote to memory of 4148 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 4148 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 4148 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe
PID 3404 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe

Processes

C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe

"C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe"

C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe

"C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe"

C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe

"C:\Users\Admin\AppData\Local\Temp\fatura comercial - Indaco EX20858 - OC00015.e.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2908 -ip 2908

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2908 -s 192

Network

Country Destination Domain Proto
US 20.42.73.24:443 tcp
SE 178.79.212.129:80 tcp
SE 178.79.212.129:80 tcp
SE 178.79.212.129:80 tcp
NL 67.26.109.254:80 tcp
NL 67.26.109.254:80 tcp
GB 92.123.143.233:80 tcp

Files

memory/3404-124-0x0000000000EB0000-0x0000000000F88000-memory.dmp

memory/3404-125-0x0000000005E20000-0x00000000063C4000-memory.dmp

memory/3404-126-0x0000000005920000-0x00000000059B2000-memory.dmp

memory/3404-127-0x0000000005910000-0x000000000591A000-memory.dmp

memory/3404-128-0x00000000080F0000-0x000000000818C000-memory.dmp

memory/3404-129-0x0000000008420000-0x0000000008486000-memory.dmp

memory/4148-130-0x0000000000000000-mapping.dmp

memory/2908-131-0x0000000000000000-mapping.dmp

memory/2908-132-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2908-133-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2908-134-0x0000000000400000-0x0000000000438000-memory.dmp