Malware Analysis Report

2024-10-16 07:02

Sample ID 240610-j8wqlsfa57
Target fsfpv5.exe
SHA256 184f79b0b16d11216e8ee8e899f8d83800e717f0676d56ef66e0a4b11aeca998
Tags
themida evasion execution trojan
score
9/10

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
9/10

SHA256

184f79b0b16d11216e8ee8e899f8d83800e717f0676d56ef66e0a4b11aeca998

Threat Level: Likely malicious

The file fsfpv5.exe was found to be: Likely malicious.

Malicious Activity Summary

themida evasion execution trojan

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Command and Scripting Interpreter: PowerShell

Deletes itself

Themida packer

Checks BIOS information in registry

Checks whether UAC is enabled

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

NTFS ADS

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 08:22

Signatures

Themida packer

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-10 08:20

Reported

2024-06-10 08:25

Platform

win7-20240419-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe"

Signatures

Themida packer

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

Processes

C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe

"C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe"

Network

N/A

Files

memory/2236-1-0x0000000140000000-0x0000000142B32000-memory.dmp

memory/2236-2-0x0000000140000000-0x0000000142B32000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 08:20

Reported

2024-06-10 08:25

Platform

win10v2004-20240508-en

Max time kernel

93s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe"

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe N/A

Themida packer

themida
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
N/A N/A N/A N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe N/A

NTFS ADS

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe:database C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe N/A
File opened for modification C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe:database-journal C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe

"C:\Users\Admin\AppData\Local\Temp\fsfpv5.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell" -WindowStyle Hidden -command [System.Security.Principal.WindowsIdentity]::GetCurrent().Name

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell" -WindowStyle Hidden -command "Get-WmiObject -Query \"select model,serialnumber from win32_diskdrive where mediatype='fixed hard disk media'\" | Select-Object -Property Model, SerialNumber | ConvertTo-Json"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell" -WindowStyle Hidden -command [System.Security.Principal.WindowsIdentity]::GetCurrent().Name

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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 104.17.242.61:443 tcp
US 66.175.219.81:443 tcp
US 104.18.26.183:443 tcp
US 104.21.21.67:443 tcp
US 104.24.0.59:443 tcp
US 188.114.96.10:443 tcp
US 8.8.8.8:53 147.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 61.242.17.104.in-addr.arpa udp
US 8.8.8.8:53 183.26.18.104.in-addr.arpa udp
US 8.8.8.8:53 67.21.21.104.in-addr.arpa udp
US 8.8.8.8:53 59.0.24.104.in-addr.arpa udp
US 8.8.8.8:53 10.96.114.188.in-addr.arpa udp
US 8.8.8.8:53 81.219.175.66.in-addr.arpa udp
US 104.17.242.61:443 tcp
US 104.17.242.61:443 tcp
US 104.17.242.61:443 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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 99.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 100.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/4540-0-0x0000000140000000-0x0000000142B32000-memory.dmp

memory/4540-1-0x00007FF935B50000-0x00007FF935B52000-memory.dmp

memory/4540-2-0x0000000140000000-0x0000000142B32000-memory.dmp

memory/4540-3-0x0000000140000000-0x0000000142B32000-memory.dmp

memory/4540-4-0x0000000140000000-0x0000000142B32000-memory.dmp

memory/4540-5-0x0000000140000000-0x0000000142B32000-memory.dmp

memory/4224-11-0x00007FF935AB0000-0x00007FF935CA5000-memory.dmp

memory/4224-10-0x00007FF935AB0000-0x00007FF935CA5000-memory.dmp

memory/4224-12-0x00007FF935AB0000-0x00007FF935CA5000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wbveiilg.osc.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4224-20-0x0000017C21B90000-0x0000017C21BB2000-memory.dmp

memory/4224-28-0x00007FF935AB0000-0x00007FF935CA5000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 d8b9a260789a22d72263ef3bb119108c
SHA1 376a9bd48726f422679f2cd65003442c0b6f6dd5
SHA256 d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc
SHA512 550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

memory/1300-41-0x0000028472B90000-0x0000028472D52000-memory.dmp

memory/1300-42-0x0000028473290000-0x00000284737B8000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 0a619e03d7b05cd57ea82a52c49c3c90
SHA1 042a6d18510700ac2ff7d258f90230a09c7a3c27
SHA256 dac940fbc111620c78954018de09b57db729dd059768d52a0d6d3b0f020691f8
SHA512 af33c361774dc2ca2591ac5a07919bbcd9e144c61d2790a26be3f5189b3f9874fed64f02152aa27182572a88764431457584d61e97d190b1ccfc2ca4813fcfa7

memory/4540-60-0x0000000140000000-0x0000000142B32000-memory.dmp