Malware Analysis Report

2025-01-02 15:33

Sample ID 241128-lhf9casrh1
Target 2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk
SHA256 fb3e279923678a38d19ed8711f842e88f4845822b77e05f0d4cf52b05093b161
Tags
pandastealer discovery stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

fb3e279923678a38d19ed8711f842e88f4845822b77e05f0d4cf52b05093b161

Threat Level: Known bad

The file 2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk was found to be: Known bad.

Malicious Activity Summary

pandastealer discovery stealer

Panda Stealer payload

PandaStealer

Pandastealer family

Suspicious use of SetThreadContext

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-28 09:31

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-28 09:31

Reported

2024-11-28 09:34

Platform

win7-20241010-en

Max time kernel

40s

Max time network

18s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe"

Signatures

Panda Stealer payload

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

PandaStealer

stealer pandastealer

Pandastealer family

pandastealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 576 set thread context of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\dxdiag.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\dxdiag.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 576 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 2848 wrote to memory of 2892 N/A C:\Windows\SysWOW64\dxdiag.exe C:\Windows\SysWOW64\WerFault.exe
PID 2848 wrote to memory of 2892 N/A C:\Windows\SysWOW64\dxdiag.exe C:\Windows\SysWOW64\WerFault.exe
PID 2848 wrote to memory of 2892 N/A C:\Windows\SysWOW64\dxdiag.exe C:\Windows\SysWOW64\WerFault.exe
PID 2848 wrote to memory of 2892 N/A C:\Windows\SysWOW64\dxdiag.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe"

C:\Windows\SysWOW64\dxdiag.exe

"C:\Windows\SysWOW64\dxdiag.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2848 -s 116

Network

N/A

Files

memory/2848-0-0x0000000000400000-0x000000000048D000-memory.dmp

memory/2848-4-0x0000000000400000-0x000000000048D000-memory.dmp

memory/2848-8-0x0000000000400000-0x000000000048D000-memory.dmp

memory/2848-13-0x0000000000400000-0x000000000048D000-memory.dmp

memory/2848-11-0x0000000000400000-0x000000000048D000-memory.dmp

memory/2848-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2848-6-0x0000000000400000-0x000000000048D000-memory.dmp

memory/2848-1-0x0000000000400000-0x000000000048D000-memory.dmp

memory/2848-2-0x0000000000400000-0x000000000048D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-28 09:31

Reported

2024-11-28 09:34

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe"

Signatures

Panda Stealer payload

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

PandaStealer

stealer pandastealer

Pandastealer family

pandastealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3752 set thread context of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3752 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 3752 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 3752 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 3752 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 3752 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 3752 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 3752 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 3752 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 3752 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe
PID 3752 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe C:\Windows\SysWOW64\dxdiag.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-28_49af26cbbe3fd0f7b13764652501dca2_cobalt-strike_ryuk.exe"

C:\Windows\SysWOW64\dxdiag.exe

"C:\Windows\SysWOW64\dxdiag.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/4980-0-0x0000000000400000-0x000000000048D000-memory.dmp

memory/4980-1-0x0000000000400000-0x000000000048D000-memory.dmp

memory/4980-2-0x0000000000400000-0x000000000048D000-memory.dmp

memory/4980-3-0x0000000000400000-0x000000000048D000-memory.dmp

memory/4980-4-0x0000000000400000-0x000000000048D000-memory.dmp