Malware Analysis Report

2025-01-03 04:58

Sample ID 220420-emdwfsehcj
Target 118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396
SHA256 118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396
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: 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

118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396

Threat Level: Known bad

The file 118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396 was found to be: Known bad.

Malicious Activity Summary

oski infostealer spyware stealer

Oski

Executes dropped EXE

Reads user/profile data of web browsers

Loads dropped DLL

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

2022-04-20 04:03

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-20 04:03

Reported

2022-04-20 04:06

Platform

win7-20220414-en

Max time kernel

43s

Max time network

48s

Command Line

"C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe"

Signatures

Oski

infostealer oski

Executes dropped EXE

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

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1396 set thread context of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1396 wrote to memory of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 1396 wrote to memory of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 1396 wrote to memory of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 1396 wrote to memory of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 1396 wrote to memory of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 1396 wrote to memory of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 1396 wrote to memory of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 1396 wrote to memory of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 1396 wrote to memory of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 1396 wrote to memory of 996 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 996 wrote to memory of 1960 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Windows\SysWOW64\WerFault.exe
PID 996 wrote to memory of 1960 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Windows\SysWOW64\WerFault.exe
PID 996 wrote to memory of 1960 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Windows\SysWOW64\WerFault.exe
PID 996 wrote to memory of 1960 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe

"C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe"

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 996 -s 740

Network

Country Destination Domain Proto
US 8.8.8.8:53 bebeksarayi.net udp

Files

memory/1396-54-0x00000000008D0000-0x000000000093E000-memory.dmp

memory/1396-55-0x00000000003E0000-0x000000000041A000-memory.dmp

\Users\Admin\AppData\Local\Temp\svhost.exe

MD5 9af17c8393f0970ee5136bd3ffa27001
SHA1 4b285b72c1a11285a25f31f2597e090da6bbc049
SHA256 71d6a7a3fe5f8dc878cd5bdeca0e09177efb85c01e9a8a10a95262cabefaa019
SHA512 b90f7de7d5ce72dccb264c7ba609e173c529b9d99ed9a63f88632bc58b1a994bbb727365f519c73b979f8918bd6de3c39a9f0347eb3a4bccdce4b2772a6516a3

memory/996-57-0x0000000000400000-0x0000000000438000-memory.dmp

memory/996-58-0x0000000000400000-0x0000000000438000-memory.dmp

memory/996-60-0x0000000000400000-0x0000000000438000-memory.dmp

memory/996-62-0x0000000000400000-0x0000000000438000-memory.dmp

memory/996-64-0x0000000000400000-0x0000000000438000-memory.dmp

memory/996-66-0x0000000000400000-0x0000000000438000-memory.dmp

memory/996-67-0x000000000040717B-mapping.dmp

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

MD5 9af17c8393f0970ee5136bd3ffa27001
SHA1 4b285b72c1a11285a25f31f2597e090da6bbc049
SHA256 71d6a7a3fe5f8dc878cd5bdeca0e09177efb85c01e9a8a10a95262cabefaa019
SHA512 b90f7de7d5ce72dccb264c7ba609e173c529b9d99ed9a63f88632bc58b1a994bbb727365f519c73b979f8918bd6de3c39a9f0347eb3a4bccdce4b2772a6516a3

memory/996-70-0x0000000000400000-0x0000000000438000-memory.dmp

memory/996-71-0x0000000075C71000-0x0000000075C73000-memory.dmp

memory/996-72-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1960-73-0x0000000000000000-mapping.dmp

\Users\Admin\AppData\Local\Temp\svhost.exe

MD5 9af17c8393f0970ee5136bd3ffa27001
SHA1 4b285b72c1a11285a25f31f2597e090da6bbc049
SHA256 71d6a7a3fe5f8dc878cd5bdeca0e09177efb85c01e9a8a10a95262cabefaa019
SHA512 b90f7de7d5ce72dccb264c7ba609e173c529b9d99ed9a63f88632bc58b1a994bbb727365f519c73b979f8918bd6de3c39a9f0347eb3a4bccdce4b2772a6516a3

\Users\Admin\AppData\Local\Temp\svhost.exe

MD5 9af17c8393f0970ee5136bd3ffa27001
SHA1 4b285b72c1a11285a25f31f2597e090da6bbc049
SHA256 71d6a7a3fe5f8dc878cd5bdeca0e09177efb85c01e9a8a10a95262cabefaa019
SHA512 b90f7de7d5ce72dccb264c7ba609e173c529b9d99ed9a63f88632bc58b1a994bbb727365f519c73b979f8918bd6de3c39a9f0347eb3a4bccdce4b2772a6516a3

\Users\Admin\AppData\Local\Temp\svhost.exe

MD5 9af17c8393f0970ee5136bd3ffa27001
SHA1 4b285b72c1a11285a25f31f2597e090da6bbc049
SHA256 71d6a7a3fe5f8dc878cd5bdeca0e09177efb85c01e9a8a10a95262cabefaa019
SHA512 b90f7de7d5ce72dccb264c7ba609e173c529b9d99ed9a63f88632bc58b1a994bbb727365f519c73b979f8918bd6de3c39a9f0347eb3a4bccdce4b2772a6516a3

\Users\Admin\AppData\Local\Temp\svhost.exe

MD5 9af17c8393f0970ee5136bd3ffa27001
SHA1 4b285b72c1a11285a25f31f2597e090da6bbc049
SHA256 71d6a7a3fe5f8dc878cd5bdeca0e09177efb85c01e9a8a10a95262cabefaa019
SHA512 b90f7de7d5ce72dccb264c7ba609e173c529b9d99ed9a63f88632bc58b1a994bbb727365f519c73b979f8918bd6de3c39a9f0347eb3a4bccdce4b2772a6516a3

\Users\Admin\AppData\Local\Temp\svhost.exe

MD5 9af17c8393f0970ee5136bd3ffa27001
SHA1 4b285b72c1a11285a25f31f2597e090da6bbc049
SHA256 71d6a7a3fe5f8dc878cd5bdeca0e09177efb85c01e9a8a10a95262cabefaa019
SHA512 b90f7de7d5ce72dccb264c7ba609e173c529b9d99ed9a63f88632bc58b1a994bbb727365f519c73b979f8918bd6de3c39a9f0347eb3a4bccdce4b2772a6516a3

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-20 04:03

Reported

2022-04-20 04:06

Platform

win10v2004-20220414-en

Max time kernel

82s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe"

Signatures

Oski

infostealer oski

Executes dropped EXE

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

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 896 set thread context of 4648 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 896 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 896 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 896 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 896 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 896 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 896 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 896 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 896 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 896 wrote to memory of 4648 N/A C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe

"C:\Users\Admin\AppData\Local\Temp\118bdd96d9f269ac09761558be99164676a9618447442731dca4006f295f2396.exe"

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4648 -ip 4648

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4648 -s 1268

Network

Country Destination Domain Proto
US 8.8.8.8:53 bebeksarayi.net udp
US 93.184.220.29:80 tcp
US 40.125.122.151:443 tcp
IE 13.69.239.73:443 tcp
US 8.8.8.8:53 15.89.54.20.in-addr.arpa udp
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

Files

memory/896-130-0x00000000008A0000-0x000000000090E000-memory.dmp

memory/896-131-0x0000000005270000-0x000000000530C000-memory.dmp

memory/4648-132-0x0000000000000000-mapping.dmp

memory/4648-133-0x0000000000400000-0x0000000000438000-memory.dmp

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

MD5 8fdf47e0ff70c40ed3a17014aeea4232
SHA1 e6256a0159688f0560b015da4d967f41cbf8c9bd
SHA256 ed9884bac608c06b7057037cc91d90e4ae5f74dd2dbce2af476699c6d4492d82
SHA512 bd69d092ed4f9c5e1f24eaf5ec79fb316469d53849dc798fae0fcba5e90869b77ee924c23cc6f692198ff25827ab60ad47bb46cadd6e0aadde7731cbafb013be

memory/4648-135-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4648-136-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4648-137-0x0000000000400000-0x0000000000438000-memory.dmp