Malware Analysis Report

2025-03-14 22:45

Sample ID 240406-1ss38acg68
Target 694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4
SHA256 694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4
Tags
persistence upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4

Threat Level: Known bad

The file 694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4 was found to be: Known bad.

Malicious Activity Summary

persistence upx

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

Modifies AppInit DLL entries

Executes dropped EXE

UPX packed file

Drops file in Program Files directory

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-06 21:55

Signatures

UPX dump on OEP (original entry point)

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

UPX packed file

upx
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
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 21:55

Reported

2024-04-06 21:57

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4.exe"

Signatures

UPX dump on OEP (original entry point)

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

Modifies AppInit DLL entries

persistence

Executes dropped EXE

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

UPX packed file

upx
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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\ktyqhhb.exe C:\Users\Admin\AppData\Local\Temp\694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4.exe N/A
File created C:\PROGRA~3\Mozilla\ixnvdrc.dll C:\PROGRA~3\Mozilla\ktyqhhb.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4.exe

"C:\Users\Admin\AppData\Local\Temp\694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4.exe"

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

C:\PROGRA~3\Mozilla\ktyqhhb.exe -arwhcpc

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 43.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 12.173.189.20.in-addr.arpa udp

Files

memory/4036-0-0x0000000000400000-0x000000000045F000-memory.dmp

memory/4036-1-0x00000000020B0000-0x000000000210B000-memory.dmp

memory/4036-2-0x0000000000400000-0x000000000045B000-memory.dmp

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

MD5 57d488e9c79253e16073c3e0022d75a7
SHA1 22300ebf7ba4dc000d3b64b2c9d7b9f2e08e038a
SHA256 925b43a4be05323bd97e12f11c03e2aa1c85f8c3a1babf58eb5a979e404e4cab
SHA512 d7029211611f52759591b3542a2b3dabf143ad8bf5dc1ef15fef3763286e72c03a85346c456ceb86bdd2cf998fe8490c83d842e463075f6ad89aa2b2af664316

memory/4512-6-0x0000000000400000-0x000000000045F000-memory.dmp

memory/4512-7-0x00000000008A0000-0x00000000008FB000-memory.dmp

memory/4512-8-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4036-10-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4036-11-0x00000000020B0000-0x000000000210B000-memory.dmp

memory/4512-14-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4512-15-0x00000000008A0000-0x00000000008FB000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 21:55

Reported

2024-04-06 21:57

Platform

win7-20240221-en

Max time kernel

121s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4.exe"

Signatures

UPX dump on OEP (original entry point)

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

Modifies AppInit DLL entries

persistence

Executes dropped EXE

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

UPX packed file

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\gjsfhjk.exe C:\Users\Admin\AppData\Local\Temp\694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4.exe N/A
File created C:\PROGRA~3\Mozilla\eurgebe.dll C:\PROGRA~3\Mozilla\gjsfhjk.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\gjsfhjk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2420 wrote to memory of 2028 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe
PID 2420 wrote to memory of 2028 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe
PID 2420 wrote to memory of 2028 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe
PID 2420 wrote to memory of 2028 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\gjsfhjk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4.exe

"C:\Users\Admin\AppData\Local\Temp\694dcfbc05750401f5e9d6284619b4f89f64a5cfa489a301e556cd814f8072b4.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {A25644CA-8161-49DB-958D-9A5745E23C72} S-1-5-18:NT AUTHORITY\System:Service:

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

C:\PROGRA~3\Mozilla\gjsfhjk.exe -tuxiydl

Network

N/A

Files

memory/2208-1-0x0000000000260000-0x00000000002BB000-memory.dmp

memory/2208-0-0x0000000000400000-0x000000000045F000-memory.dmp

memory/2208-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2208-4-0x0000000000400000-0x000000000045B000-memory.dmp

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

MD5 173c0d699e875d30e9b3c732a91abcc6
SHA1 0b94c879e23fc9f5ad46a9cf31cdbb3cd82247fd
SHA256 52132f1b94641f30a163ddf68cdbaddb2ecec8e31ce3bf4d2154eba985812e68
SHA512 b7cd11bc90121b0a55f337d9108eb73ee88ec09c8cb1ff473a5be6aeb045223aacbfc14d97ac53de0e9cafa4f2cce2964f8c00030cda64e74f536da542694b5c

memory/2028-7-0x0000000000400000-0x000000000045F000-memory.dmp

memory/2028-8-0x00000000002E0000-0x000000000033B000-memory.dmp

memory/2028-9-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2028-11-0x0000000000400000-0x000000000045B000-memory.dmp