Malware Analysis Report

2024-10-16 07:00

Sample ID 240609-2x8j5sgf93
Target client.exe
SHA256 ba5cb0b913f453b3db0e8dbbb33d7393bc5ac51bd213c3e5834118f512f68f60
Tags
themida evasion 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

ba5cb0b913f453b3db0e8dbbb33d7393bc5ac51bd213c3e5834118f512f68f60

Threat Level: Likely malicious

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

Malicious Activity Summary

themida evasion trojan

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

Themida packer

Checks BIOS information in registry

Checks whether UAC is enabled

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of NtCreateThreadExHideFromDebugger

Unsigned PE

Suspicious use of SetWindowsHookEx

cURL User-Agent

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-09 22:58

Signatures

Themida packer

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-09 22:58

Reported

2024-06-09 23:09

Platform

win7-20240215-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\client.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\client.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\client.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\client.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

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\client.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Processes

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

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

Network

N/A

Files

memory/2896-0-0x000000013F6A0000-0x00000001400EE000-memory.dmp

memory/2896-1-0x0000000077B60000-0x0000000077B62000-memory.dmp

memory/2896-2-0x000000013F6A0000-0x00000001400EE000-memory.dmp

memory/2896-3-0x000000013F6A0000-0x00000001400EE000-memory.dmp

memory/2896-5-0x000000013F6A0000-0x00000001400EE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 22:58

Reported

2024-06-09 23:09

Platform

win10v2004-20240226-en

Max time kernel

152s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\client.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\client.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\client.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\client.exe N/A

Themida packer

themida
Description Indicator Process Target
N/A N/A N/A N/A
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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\client.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

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

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious behavior: EnumeratesProcesses

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

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of SetWindowsHookEx

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

cURL User-Agent

Description Indicator Process Target
HTTP User-Agent header curl/8.4.0 N/A N/A

Processes

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

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4140 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
DE 141.95.84.21:3522 141.95.84.21 tcp
US 8.8.8.8:53 21.84.95.141.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 76.234.34.23.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 13.107.253.64:443 tcp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 214.80.50.20.in-addr.arpa udp

Files

memory/2332-0-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-1-0x00007FFEF6110000-0x00007FFEF6112000-memory.dmp

memory/2332-2-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-3-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-4-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-5-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-6-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-7-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-8-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-9-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-10-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-11-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-12-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-13-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-14-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-15-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-16-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-17-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp

memory/2332-18-0x00007FF72B3E0000-0x00007FF72BE2E000-memory.dmp