Malware Analysis Report

2025-03-14 22:28

Sample ID 240407-2x7mvahc26
Target 863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6
SHA256 863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6
Tags
persistence
score
8/10

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
8/10

SHA256

863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6

Threat Level: Likely malicious

The file 863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6 was found to be: Likely malicious.

Malicious Activity Summary

persistence

Modifies AppInit DLL entries

Executes dropped EXE

Drops file in Program Files directory

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 22:58

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 22:58

Reported

2024-04-07 23:01

Platform

win7-20240221-en

Max time kernel

118s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\PROGRA~3\Mozilla\tbckyxk.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\tbckyxk.exe C:\Users\Admin\AppData\Local\Temp\863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6.exe N/A
File created C:\PROGRA~3\Mozilla\newtrln.dll C:\PROGRA~3\Mozilla\tbckyxk.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\tbckyxk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2280 wrote to memory of 2316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\tbckyxk.exe
PID 2280 wrote to memory of 2316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\tbckyxk.exe
PID 2280 wrote to memory of 2316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\tbckyxk.exe
PID 2280 wrote to memory of 2316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\tbckyxk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6.exe

"C:\Users\Admin\AppData\Local\Temp\863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {0028E4F9-BCC1-462D-AE0A-D47822BA3EB8} S-1-5-18:NT AUTHORITY\System:Service:

C:\PROGRA~3\Mozilla\tbckyxk.exe

C:\PROGRA~3\Mozilla\tbckyxk.exe -gqpcbye

Network

N/A

Files

memory/1100-0-0x0000000000400000-0x000000000045E000-memory.dmp

memory/1100-1-0x0000000000460000-0x00000000004BB000-memory.dmp

memory/1100-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1100-4-0x0000000000400000-0x000000000045B000-memory.dmp

C:\PROGRA~3\Mozilla\tbckyxk.exe

MD5 0d56e869af4ff1b3d8b712663c1f7638
SHA1 08ff4909356bc6d647d1b13c81478e3fb535060b
SHA256 1bbbf0a4e5b5899683c5d7b1792e64deecef2d5e16e0f2e381f9a0aee8462e59
SHA512 07146ddff621845cde6b77951d8ba9f53e3ee7b7f8c826517aacca92e43034133c8c20c8c2580b92a9cac69609f54e05e146481e2eecefc466c5cc17cff1c126

memory/2316-7-0x0000000000400000-0x000000000045E000-memory.dmp

memory/2316-8-0x0000000000460000-0x00000000004BB000-memory.dmp

memory/2316-9-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2316-11-0x0000000000400000-0x000000000045B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 22:58

Reported

2024-04-07 23:01

Platform

win10v2004-20240226-en

Max time kernel

146s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\PROGRA~3\Mozilla\fwjctpb.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\fwjctpb.exe C:\Users\Admin\AppData\Local\Temp\863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6.exe N/A
File created C:\PROGRA~3\Mozilla\jqvifpn.dll C:\PROGRA~3\Mozilla\fwjctpb.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6.exe

"C:\Users\Admin\AppData\Local\Temp\863e68ee97793245525d813e5a7ec9d234c90bd8741152a4f491ec6debf71ef6.exe"

C:\PROGRA~3\Mozilla\fwjctpb.exe

C:\PROGRA~3\Mozilla\fwjctpb.exe -qdcpmcc

Network

Country Destination Domain Proto
GB 96.16.110.114:80 tcp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 130.118.77.104.in-addr.arpa udp
US 8.8.8.8:53 36.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 168.117.168.52.in-addr.arpa udp

Files

memory/4092-0-0x0000000000400000-0x000000000045E000-memory.dmp

memory/4092-1-0x0000000002200000-0x000000000225B000-memory.dmp

memory/4092-2-0x0000000000400000-0x000000000045B000-memory.dmp

C:\ProgramData\Mozilla\fwjctpb.exe

MD5 395a32f4cb15fbd9dd8bb9efe08b7bee
SHA1 d3463e43125fbc3c65381ba877a26c3c88c430dc
SHA256 3bfca4f5a3d0a219bf55ae37a4fc9668eb3894244f9080ff73912d9dde727f0d
SHA512 525ddd9df4db173008bc781563cecc509e6f4482754cdc9d481b86241f8519a6063410becb45c7dfda1691f2e1bbf00bbfc86bbcbf3180d981c89e409c335c7f

memory/4092-5-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4092-7-0x0000000002200000-0x000000000225B000-memory.dmp

memory/216-9-0x0000000000D60000-0x0000000000DBB000-memory.dmp

memory/216-10-0x0000000000400000-0x000000000045B000-memory.dmp

memory/216-12-0x0000000000400000-0x000000000045B000-memory.dmp