Malware Analysis Report

2024-09-22 21:54

Sample ID 240728-y15qwascqq
Target 218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118
SHA256 e636e864524817c9421705c33e3606c5d8b46ece43aaafe10cbb8e66bfd84558
Tags
oski discovery 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

e636e864524817c9421705c33e3606c5d8b46ece43aaafe10cbb8e66bfd84558

Threat Level: Known bad

The file 218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

oski discovery infostealer

Oski

Suspicious use of SetThreadContext

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-07-28 20:16

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-28 20:16

Reported

2024-07-30 04:03

Platform

win7-20240705-en

Max time kernel

134s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe"

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1592 set thread context of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1592 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1592 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1592 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1592 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1592 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1592 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1592 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1592 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1592 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1592 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1452 wrote to memory of 1940 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe C:\Windows\SysWOW64\WerFault.exe
PID 1452 wrote to memory of 1940 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe C:\Windows\SysWOW64\WerFault.exe
PID 1452 wrote to memory of 1940 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe C:\Windows\SysWOW64\WerFault.exe
PID 1452 wrote to memory of 1940 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe"

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1452 -s 112

Network

N/A

Files

memory/1592-0-0x0000000073B9E000-0x0000000073B9F000-memory.dmp

memory/1592-1-0x00000000008C0000-0x000000000091E000-memory.dmp

memory/1592-2-0x0000000000470000-0x0000000000476000-memory.dmp

memory/1592-3-0x0000000073B90000-0x000000007427E000-memory.dmp

memory/1592-4-0x0000000073B9E000-0x0000000073B9F000-memory.dmp

memory/1592-5-0x0000000073B90000-0x000000007427E000-memory.dmp

memory/1592-6-0x00000000004E0000-0x0000000000514000-memory.dmp

memory/1592-7-0x0000000000490000-0x00000000004A4000-memory.dmp

memory/1452-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1592-18-0x0000000073B90000-0x000000007427E000-memory.dmp

memory/1452-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1452-14-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/1452-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1452-11-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1452-10-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1452-9-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1452-8-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-28 20:16

Reported

2024-07-30 04:03

Platform

win10v2004-20240709-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe"

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1500 set thread context of 4568 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1500 wrote to memory of 4404 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4404 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4404 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 1500 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe

Processes

C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\218629c4a1eab5657a91cf9ea1076ce2_JaffaCakes118.exe"

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

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
RU 45.8.228.100:80 tcp
US 8.8.8.8:53 18.173.189.20.in-addr.arpa udp
RU 45.8.228.100:80 tcp
RU 45.8.228.100:80 tcp

Files

memory/1500-0-0x000000007494E000-0x000000007494F000-memory.dmp

memory/1500-1-0x0000000000DA0000-0x0000000000DFE000-memory.dmp

memory/1500-2-0x0000000007B70000-0x0000000007B76000-memory.dmp

memory/1500-3-0x0000000074940000-0x00000000750F0000-memory.dmp

memory/1500-4-0x000000007494E000-0x000000007494F000-memory.dmp

memory/1500-5-0x0000000074940000-0x00000000750F0000-memory.dmp

memory/1500-6-0x00000000012D0000-0x0000000001304000-memory.dmp

memory/1500-7-0x00000000015B0000-0x00000000015C4000-memory.dmp

memory/4568-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4568-10-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4568-11-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4568-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1500-13-0x0000000074940000-0x00000000750F0000-memory.dmp