Malware Analysis Report

2024-09-23 03:01

Sample ID 240703-wh6t4s1cjn
Target 03072024164603072024OC13065.rar
SHA256 d4edd94a065d71ae37cb48c64a09e3dab0996096f8a98a378185b26816655e42
Tags
stormkitty xworm rat stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d4edd94a065d71ae37cb48c64a09e3dab0996096f8a98a378185b26816655e42

Threat Level: Known bad

The file 03072024164603072024OC13065.rar was found to be: Known bad.

Malicious Activity Summary

stormkitty xworm rat stealer trojan

Detect Xworm Payload

StormKitty

StormKitty payload

Xworm

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-07-03 17:56

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-03 17:56

Reported

2024-07-03 17:58

Platform

win10v2004-20240611-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\OC 13065.exe"

Signatures

Detect Xworm Payload

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

StormKitty

stealer stormkitty

StormKitty payload

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

Xworm

trojan rat xworm

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4776 set thread context of 2632 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4776 wrote to memory of 4328 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 4776 wrote to memory of 4328 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 4776 wrote to memory of 4328 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
PID 4776 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4776 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4776 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4776 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4776 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4776 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4776 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
PID 4776 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe

Processes

C:\Users\Admin\AppData\Local\Temp\OC 13065.exe

"C:\Users\Admin\AppData\Local\Temp\OC 13065.exe"

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

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

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2632 -ip 2632

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2632 -s 1656

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 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
NL 185.29.11.111:7000 tcp
US 8.8.8.8:53 111.11.29.185.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
NL 185.29.11.111:7000 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/4776-1-0x00007FFCCD2C3000-0x00007FFCCD2C5000-memory.dmp

memory/4776-0-0x0000023E64F00000-0x0000023E64F0E000-memory.dmp

memory/4776-2-0x0000023E7F5D0000-0x0000023E7F5DE000-memory.dmp

memory/4776-3-0x0000023E652E0000-0x0000023E65342000-memory.dmp

memory/4776-4-0x00007FFCCD2C0000-0x00007FFCCDD81000-memory.dmp

memory/2632-5-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2632-6-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

memory/2632-7-0x0000000005880000-0x000000000591C000-memory.dmp

memory/4776-8-0x00007FFCCD2C0000-0x00007FFCCDD81000-memory.dmp

memory/2632-9-0x0000000074D10000-0x00000000754C0000-memory.dmp

memory/2632-10-0x0000000005FA0000-0x0000000006006000-memory.dmp

memory/2632-11-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

memory/2632-12-0x0000000006960000-0x00000000069F2000-memory.dmp

memory/2632-13-0x0000000006FB0000-0x0000000007554000-memory.dmp

memory/2632-14-0x0000000074D10000-0x00000000754C0000-memory.dmp

memory/2632-15-0x0000000006B00000-0x0000000006C20000-memory.dmp

memory/2632-16-0x0000000007560000-0x00000000078B4000-memory.dmp

memory/2632-17-0x0000000006D80000-0x0000000006DCC000-memory.dmp

memory/2632-56-0x0000000074D10000-0x00000000754C0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-03 17:56

Reported

2024-07-03 17:58

Platform

win7-20240220-en

Max time kernel

122s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\OC 13065.exe"

Signatures

Detect Xworm 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

StormKitty

stealer stormkitty

StormKitty payload

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

Xworm

trojan rat xworm

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2036 set thread context of 2476 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2036 wrote to memory of 2476 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2036 wrote to memory of 2476 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2036 wrote to memory of 2476 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2036 wrote to memory of 2476 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2036 wrote to memory of 2476 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2036 wrote to memory of 2476 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2036 wrote to memory of 2476 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2036 wrote to memory of 2476 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2036 wrote to memory of 2476 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
PID 2036 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\system32\WerFault.exe
PID 2036 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\system32\WerFault.exe
PID 2036 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\OC 13065.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\OC 13065.exe

"C:\Users\Admin\AppData\Local\Temp\OC 13065.exe"

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

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2036 -s 616

Network

Country Destination Domain Proto
NL 185.29.11.111:7000 tcp
NL 185.29.11.111:7000 tcp

Files

memory/2036-0-0x000007FEF5BB3000-0x000007FEF5BB4000-memory.dmp

memory/2036-1-0x0000000000820000-0x000000000082E000-memory.dmp

memory/2036-2-0x000000001B010000-0x000000001B01E000-memory.dmp

memory/2036-3-0x0000000000770000-0x00000000007D2000-memory.dmp

memory/2036-4-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

memory/2476-9-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2476-8-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2476-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2476-5-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2476-11-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2476-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2476-13-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2476-15-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2476-16-0x00000000747CE000-0x00000000747CF000-memory.dmp

memory/2476-17-0x00000000747C0000-0x0000000074EAE000-memory.dmp

memory/2036-18-0x000007FEF5BB3000-0x000007FEF5BB4000-memory.dmp

memory/2036-19-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

memory/2476-20-0x00000000747CE000-0x00000000747CF000-memory.dmp

memory/2476-21-0x00000000747C0000-0x0000000074EAE000-memory.dmp

memory/2476-22-0x0000000006340000-0x0000000006460000-memory.dmp