Malware Analysis Report

2024-10-18 21:32

Sample ID 240520-naqtxsgg96
Target Payroll.7z
SHA256 250d4c0d3c0d4b8da56453ffdcea05f009baf29d13befc9aff858f8deb18a038
Tags
metasploit backdoor persistence trojan
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

250d4c0d3c0d4b8da56453ffdcea05f009baf29d13befc9aff858f8deb18a038

Threat Level: Known bad

The file Payroll.7z was found to be: Known bad.

Malicious Activity Summary

metasploit backdoor persistence trojan

Metasploit family

MetaSploit

Grants admin privileges

Adds Run key to start application

Unsigned PE

Enumerates processes with tasklist

Suspicious behavior: EnumeratesProcesses

Gathers system information

Runs net.exe

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-20 11:11

Signatures

Metasploit family

metasploit

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-20 11:11

Reported

2024-05-20 11:15

Platform

win7-20231129-en

Max time kernel

140s

Max time network

118s

Command Line

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

Signatures

MetaSploit

trojan backdoor metasploit

Grants admin privileges

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\dolphin.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dolphin.exe" C:\Users\Admin\AppData\Local\Temp\dolphin.exe N/A

Enumerates processes with tasklist

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

Gathers system information

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

Runs net.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\tasklist.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\reg.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2316 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2196 wrote to memory of 2216 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\net.exe
PID 2196 wrote to memory of 2216 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\net.exe
PID 2196 wrote to memory of 2216 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\net.exe
PID 2196 wrote to memory of 2216 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\net.exe
PID 2216 wrote to memory of 3040 N/A C:\Windows\SysWOW64\net.exe C:\Windows\SysWOW64\net1.exe
PID 2216 wrote to memory of 3040 N/A C:\Windows\SysWOW64\net.exe C:\Windows\SysWOW64\net1.exe
PID 2216 wrote to memory of 3040 N/A C:\Windows\SysWOW64\net.exe C:\Windows\SysWOW64\net1.exe
PID 2216 wrote to memory of 3040 N/A C:\Windows\SysWOW64\net.exe C:\Windows\SysWOW64\net1.exe
PID 2316 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2064 wrote to memory of 3048 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\systeminfo.exe
PID 2064 wrote to memory of 3048 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\systeminfo.exe
PID 2064 wrote to memory of 3048 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\systeminfo.exe
PID 2064 wrote to memory of 3048 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\systeminfo.exe
PID 2316 wrote to memory of 2464 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2464 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2464 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2464 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2464 wrote to memory of 3052 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\whoami.exe
PID 2464 wrote to memory of 3052 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\whoami.exe
PID 2464 wrote to memory of 3052 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\whoami.exe
PID 2464 wrote to memory of 3052 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\whoami.exe
PID 2316 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2316 wrote to memory of 2760 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2760 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\tasklist.exe
PID 2760 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\tasklist.exe
PID 2760 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\tasklist.exe
PID 2760 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\tasklist.exe
PID 2316 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\notepad.exe
PID 2316 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\notepad.exe
PID 2316 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\notepad.exe
PID 2316 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\notepad.exe
PID 2316 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\notepad.exe
PID 2820 wrote to memory of 2596 N/A C:\Windows\SysWOW64\notepad.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2820 wrote to memory of 2596 N/A C:\Windows\SysWOW64\notepad.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2820 wrote to memory of 2596 N/A C:\Windows\SysWOW64\notepad.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2820 wrote to memory of 2596 N/A C:\Windows\SysWOW64\notepad.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2596 wrote to memory of 2532 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\reg.exe
PID 2596 wrote to memory of 2532 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\reg.exe
PID 2596 wrote to memory of 2532 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\reg.exe
PID 2596 wrote to memory of 2532 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\reg.exe

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c net localgroup administrators

C:\Windows\SysWOW64\net.exe

net localgroup administrators

C:\Windows\SysWOW64\net1.exe

C:\Windows\system32\net1 localgroup administrators

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c systeminfo

C:\Windows\SysWOW64\systeminfo.exe

systeminfo

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c whoami

C:\Windows\SysWOW64\whoami.exe

whoami

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c tasklist

C:\Windows\SysWOW64\tasklist.exe

tasklist

C:\Windows\SysWOW64\notepad.exe

"C:\Windows\System32\notepad.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

powershell -w 1 "reg.exe save HKLM\SAM bin"

C:\Windows\SysWOW64\reg.exe

"C:\Windows\system32\reg.exe" save HKLM\SAM bin

Network

Country Destination Domain Proto
CA 99.247.33.186:80 tcp

Files

memory/2820-0-0x00000000001C0000-0x00000000001C1000-memory.dmp

memory/2820-2-0x00000000001C0000-0x00000000001C1000-memory.dmp

memory/2316-6-0x0000000000400000-0x0000000000412000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-20 11:11

Reported

2024-05-20 11:15

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

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

Signatures

MetaSploit

trojan backdoor metasploit

Grants admin privileges

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\dolphin.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dolphin.exe" C:\Users\Admin\AppData\Local\Temp\dolphin.exe N/A

Enumerates processes with tasklist

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

Gathers system information

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

Runs net.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\whoami.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\tasklist.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\reg.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\OpenWith.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2004 wrote to memory of 3888 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2004 wrote to memory of 3888 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2004 wrote to memory of 3888 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 3888 wrote to memory of 4056 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\net.exe
PID 3888 wrote to memory of 4056 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\net.exe
PID 3888 wrote to memory of 4056 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\net.exe
PID 4056 wrote to memory of 4904 N/A C:\Windows\SysWOW64\net.exe C:\Windows\SysWOW64\net1.exe
PID 4056 wrote to memory of 4904 N/A C:\Windows\SysWOW64\net.exe C:\Windows\SysWOW64\net1.exe
PID 4056 wrote to memory of 4904 N/A C:\Windows\SysWOW64\net.exe C:\Windows\SysWOW64\net1.exe
PID 2004 wrote to memory of 3504 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2004 wrote to memory of 3504 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2004 wrote to memory of 3504 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 3504 wrote to memory of 2880 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\systeminfo.exe
PID 3504 wrote to memory of 2880 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\systeminfo.exe
PID 3504 wrote to memory of 2880 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\systeminfo.exe
PID 2004 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2004 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2004 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 4000 wrote to memory of 4532 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\whoami.exe
PID 4000 wrote to memory of 4532 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\whoami.exe
PID 4000 wrote to memory of 4532 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\whoami.exe
PID 2004 wrote to memory of 5020 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2004 wrote to memory of 5020 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 2004 wrote to memory of 5020 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\cmd.exe
PID 5020 wrote to memory of 1264 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\tasklist.exe
PID 5020 wrote to memory of 1264 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\tasklist.exe
PID 5020 wrote to memory of 1264 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\tasklist.exe
PID 2004 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\notepad.exe
PID 2004 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\notepad.exe
PID 2004 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\notepad.exe
PID 2004 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\dolphin.exe C:\Windows\SysWOW64\notepad.exe
PID 3068 wrote to memory of 3396 N/A C:\Windows\SysWOW64\notepad.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 3068 wrote to memory of 3396 N/A C:\Windows\SysWOW64\notepad.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 3068 wrote to memory of 3396 N/A C:\Windows\SysWOW64\notepad.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 3396 wrote to memory of 4836 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\reg.exe
PID 3396 wrote to memory of 4836 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\reg.exe
PID 3396 wrote to memory of 4836 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\reg.exe

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c net localgroup administrators

C:\Windows\SysWOW64\net.exe

net localgroup administrators

C:\Windows\system32\OpenWith.exe

C:\Windows\system32\OpenWith.exe -Embedding

C:\Windows\SysWOW64\net1.exe

C:\Windows\system32\net1 localgroup administrators

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c systeminfo

C:\Windows\SysWOW64\systeminfo.exe

systeminfo

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c whoami

C:\Windows\SysWOW64\whoami.exe

whoami

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c tasklist

C:\Windows\SysWOW64\tasklist.exe

tasklist

C:\Windows\SysWOW64\notepad.exe

"C:\Windows\System32\notepad.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

powershell -w 1 "reg.exe save HKLM\SAM bin"

C:\Windows\SysWOW64\reg.exe

"C:\Windows\system32\reg.exe" save HKLM\SAM bin

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
CA 99.247.33.186:80 tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 9.173.189.20.in-addr.arpa udp

Files

memory/3068-0-0x0000000002330000-0x0000000002331000-memory.dmp

memory/3396-4-0x0000000004B10000-0x0000000004B46000-memory.dmp

memory/3396-5-0x0000000005180000-0x00000000057A8000-memory.dmp

memory/3396-6-0x00000000050F0000-0x0000000005112000-memory.dmp

memory/3396-7-0x00000000058E0000-0x0000000005946000-memory.dmp

memory/3396-8-0x0000000005950000-0x00000000059B6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vpqlahvd.1au.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3396-18-0x0000000005BD0000-0x0000000005F24000-memory.dmp

memory/3396-19-0x0000000005F80000-0x0000000005F9E000-memory.dmp

memory/3396-20-0x0000000006030000-0x000000000607C000-memory.dmp

memory/2004-23-0x0000000000400000-0x0000000000412000-memory.dmp