Malware Analysis Report

2024-09-22 21:46

Sample ID 240215-3ljx3scc43
Target 9ede6811a55c8082d02b552392595f06
SHA256 2ca6487650676dfac02da8af32d2eea7c0a2162ff5c9881c54f698beac6921c4
Tags
oski infostealer
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

2ca6487650676dfac02da8af32d2eea7c0a2162ff5c9881c54f698beac6921c4

Threat Level: Known bad

The file 9ede6811a55c8082d02b552392595f06 was found to be: Known bad.

Malicious Activity Summary

oski infostealer

Oski

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-02-15 23:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-15 23:36

Reported

2024-02-15 23:38

Platform

win7-20231215-en

Max time kernel

121s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe"

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2916 set thread context of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2636 wrote to memory of 2500 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\WerFault.exe
PID 2636 wrote to memory of 2500 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\WerFault.exe
PID 2636 wrote to memory of 2500 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\WerFault.exe
PID 2636 wrote to memory of 2500 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe

"C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2636 -s 732

Network

Country Destination Domain Proto
US 8.8.8.8:53 bctpump.us udp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp

Files

memory/2916-0-0x0000000000D50000-0x0000000000E14000-memory.dmp

memory/2916-1-0x00000000746C0000-0x0000000074DAE000-memory.dmp

memory/2916-2-0x0000000004EE0000-0x0000000004F20000-memory.dmp

memory/2916-3-0x00000000002C0000-0x00000000002DC000-memory.dmp

memory/2916-4-0x00000000746C0000-0x0000000074DAE000-memory.dmp

memory/2916-5-0x0000000004EE0000-0x0000000004F20000-memory.dmp

memory/2916-6-0x0000000005310000-0x0000000005378000-memory.dmp

memory/2916-7-0x0000000000520000-0x0000000000558000-memory.dmp

memory/2636-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2636-10-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2636-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2636-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2636-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2636-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2636-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2916-19-0x00000000746C0000-0x0000000074DAE000-memory.dmp

memory/2636-20-0x0000000000400000-0x0000000000438000-memory.dmp

C:\ProgramData\msvcp140.dll

MD5 a7eca2913e9112121e5585480b1f7c82
SHA1 8202e28c75f97352c0545b1a05d2a902a1c5664b
SHA256 60bd258837c33a9abb899bc6d6393da70afe5bf2dfd9b560f47092a9c43ba43a
SHA512 f6ceabaa4f567fa98f6758e7605fdf473f4ae0f26b0be1c5d0ef8e456421c4a8b487ed7b6042469d81daf7142eee8cd382a8a169972ea7accf9eb079e62f9f46

memory/2636-30-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-15 23:36

Reported

2024-02-15 23:38

Platform

win10v2004-20231215-en

Max time kernel

140s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe"

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4564 set thread context of 4508 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4564 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4564 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4564 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4564 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4564 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4564 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4564 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4564 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 4564 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Processes

C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe

"C:\Users\Admin\AppData\Local\Temp\9ede6811a55c8082d02b552392595f06.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4508 -ip 4508

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4508 -s 1288

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 bctpump.us udp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp
US 8.8.8.8:53 43.185.14.72.in-addr.arpa udp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp
US 72.14.185.43:80 bctpump.us tcp
US 8.8.8.8:53 88.16.208.104.in-addr.arpa udp

Files

memory/4564-0-0x0000000074EA0000-0x0000000075650000-memory.dmp

memory/4564-1-0x0000000000150000-0x0000000000214000-memory.dmp

memory/4564-2-0x0000000005190000-0x0000000005734000-memory.dmp

memory/4564-3-0x0000000004C80000-0x0000000004D12000-memory.dmp

memory/4564-4-0x0000000004F10000-0x0000000004F20000-memory.dmp

memory/4564-5-0x0000000004C20000-0x0000000004C2A000-memory.dmp

memory/4564-6-0x0000000004D90000-0x0000000004DAC000-memory.dmp

memory/4564-7-0x0000000006350000-0x00000000063EC000-memory.dmp

memory/4564-8-0x0000000074EA0000-0x0000000075650000-memory.dmp

memory/4564-9-0x0000000004F10000-0x0000000004F20000-memory.dmp

memory/4564-10-0x0000000006780000-0x00000000067E8000-memory.dmp

memory/4564-11-0x0000000008D60000-0x0000000008D98000-memory.dmp

memory/4508-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4508-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4508-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4508-16-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4564-17-0x0000000074EA0000-0x0000000075650000-memory.dmp

C:\ProgramData\msvcp140.dll

MD5 a7eca2913e9112121e5585480b1f7c82
SHA1 8202e28c75f97352c0545b1a05d2a902a1c5664b
SHA256 60bd258837c33a9abb899bc6d6393da70afe5bf2dfd9b560f47092a9c43ba43a
SHA512 f6ceabaa4f567fa98f6758e7605fdf473f4ae0f26b0be1c5d0ef8e456421c4a8b487ed7b6042469d81daf7142eee8cd382a8a169972ea7accf9eb079e62f9f46

memory/4508-28-0x0000000000400000-0x0000000000438000-memory.dmp