Malware Analysis Report

2025-01-03 04:57

Sample ID 220418-mydc3afed3
Target e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42
SHA256 e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42
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

e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42

Threat Level: Known bad

The file e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42 was found to be: Known bad.

Malicious Activity Summary

oski infostealer

Oski

Suspicious use of SetThreadContext

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-04-18 10:52

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-18 10:52

Reported

2022-04-18 16:46

Platform

win7-20220414-en

Max time kernel

148s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe"

Signatures

Oski

infostealer oski

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1460 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 1460 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 1460 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 1460 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 1460 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 1460 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 1460 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 1460 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 1460 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 1460 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe

Processes

C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe

"C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe"

C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe

"C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe"

Network

Country Destination Domain Proto
NL 185.206.214.130:80 tcp
NL 185.206.214.130:80 tcp
NL 185.206.214.130:80 tcp
NL 185.206.214.130:80 tcp

Files

memory/1460-54-0x0000000000B30000-0x0000000000BC8000-memory.dmp

memory/1460-55-0x00000000001D0000-0x00000000001F8000-memory.dmp

memory/1460-56-0x0000000000200000-0x0000000000212000-memory.dmp

memory/1212-57-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1212-58-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1212-60-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1212-62-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1212-64-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1212-66-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1212-67-0x000000000040717B-mapping.dmp

memory/1212-69-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1212-70-0x00000000769D1000-0x00000000769D3000-memory.dmp

memory/1212-71-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-18 10:52

Reported

2022-04-18 16:47

Platform

win10v2004-20220414-en

Max time kernel

181s

Max time network

187s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe"

Signatures

Oski

infostealer oski

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4224 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 4224 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 4224 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 4224 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 4224 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 4224 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 4224 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 4224 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe
PID 4224 wrote to memory of 4408 N/A C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe

Processes

C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe

"C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe"

C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe

"C:\Users\Admin\AppData\Local\Temp\e0654cd7e7028ee40cd105e89f67608b68c9c4d0b92471d88996bb2508db5e42.exe"

Network

Country Destination Domain Proto
US 8.247.211.126:80 tcp
US 8.247.211.126:80 tcp
US 52.242.97.97:443 tcp
US 93.184.220.29:80 tcp
GB 51.104.15.253:443 tcp
US 8.247.211.126:80 tcp
US 8.247.211.126:80 tcp
US 8.247.211.126:80 tcp
US 8.8.8.8:53 15.89.54.20.in-addr.arpa udp
US 93.184.220.29:80 tcp
US 8.8.8.8:53 2.8.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.4.0.c.0.0.3.0.1.3.0.6.2.ip6.arpa udp
NL 185.206.214.130:80 tcp
NL 8.248.3.254:80 tcp
BE 67.27.154.126:80 tcp
NL 185.206.214.130:80 tcp
NL 185.206.214.130:80 tcp
NL 185.206.214.130:80 tcp

Files

memory/4224-130-0x0000000000940000-0x00000000009D8000-memory.dmp

memory/4408-131-0x0000000000000000-mapping.dmp

memory/4408-132-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4408-133-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4408-134-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4408-135-0x0000000000400000-0x0000000000438000-memory.dmp