Malware Analysis Report

2025-03-14 22:57

Sample ID 240406-3ty2zafc73
Target 9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d
SHA256 9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d
Tags
upx persistence
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

9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d

Threat Level: Known bad

The file 9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d was found to be: Known bad.

Malicious Activity Summary

upx persistence

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

Modifies AppInit DLL entries

Loads dropped DLL

UPX packed file

Executes dropped EXE

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 23:49

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: behavioral1

Detonation Overview

Submitted

2024-04-06 23:49

Reported

2024-04-06 23:51

Platform

win7-20240220-en

Max time kernel

117s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d.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\wrvdfyg.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\PROGRA~3\Mozilla\wrvdfyg.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\wrvdfyg.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\wrvdfyg.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\wrvdfyg.exe C:\Users\Admin\AppData\Local\Temp\9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d.exe N/A
File created C:\PROGRA~3\Mozilla\klztrnd.dll C:\PROGRA~3\Mozilla\wrvdfyg.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\wrvdfyg.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2300 wrote to memory of 1316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\wrvdfyg.exe
PID 2300 wrote to memory of 1316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\wrvdfyg.exe
PID 2300 wrote to memory of 1316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\wrvdfyg.exe
PID 2300 wrote to memory of 1316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\wrvdfyg.exe
PID 2300 wrote to memory of 1316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\wrvdfyg.exe
PID 2300 wrote to memory of 1316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\wrvdfyg.exe
PID 2300 wrote to memory of 1316 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\wrvdfyg.exe

Processes

C:\Users\Admin\AppData\Local\Temp\9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d.exe

"C:\Users\Admin\AppData\Local\Temp\9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {9D4CC234-13FF-40B8-8F85-39C358FDE676} S-1-5-18:NT AUTHORITY\System:Service:

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

C:\PROGRA~3\Mozilla\wrvdfyg.exe -hzyjzia

Network

N/A

Files

memory/1724-1-0x0000000000370000-0x00000000003D7000-memory.dmp

memory/1724-3-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1724-2-0x0000000000370000-0x00000000003CB000-memory.dmp

memory/1724-0-0x0000000000400000-0x0000000000467000-memory.dmp

memory/1724-5-0x0000000000400000-0x000000000045B000-memory.dmp

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

MD5 b6b4e58ef5a9fe94eebb73ea2771243d
SHA1 9d73dc314251be4209a026a6c27d32b29e9ec152
SHA256 f818ee94d309403ee114387d3425eca41098f59c40d890f80dbf65147bda09d6
SHA512 26368dc4d8adfda03f615298182e20eab29358dbd77b6eaa8cb834d05cddf61fa705cce6f78d7b83ea75d4d775824ce5346186d16e7e5c265e6da177bea1a498

memory/1316-8-0x0000000000400000-0x0000000000467000-memory.dmp

memory/1316-12-0x0000000000470000-0x00000000004CB000-memory.dmp

memory/1316-13-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1316-15-0x0000000000400000-0x000000000045B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 23:49

Reported

2024-04-06 23:51

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d.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\fwjctpb.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\fwjctpb.exe C:\Users\Admin\AppData\Local\Temp\9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d.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\9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d.exe

"C:\Users\Admin\AppData\Local\Temp\9e606e6d13b8922d4a6010dc47697d94e2bd1954a0eb8d8790cfad0c63ca0e5d.exe"

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

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

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 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 145.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp

Files

memory/876-0-0x0000000000400000-0x0000000000467000-memory.dmp

memory/876-1-0x0000000000A60000-0x0000000000ABB000-memory.dmp

memory/876-2-0x0000000000400000-0x000000000045B000-memory.dmp

C:\ProgramData\Mozilla\fwjctpb.exe

MD5 d3ececc09aa2bbefaddc4b5bef664be8
SHA1 9de060f525762403740b8de89d7085864f1b621c
SHA256 7fb56fc06fce58ac1d47b97e7741e723ceb82f9c7d3d9223dccabe15f9179fed
SHA512 00ea2c5b16a2b74e0f0c1cf9279b3b8e1249ff54320d4100e3b15f4f21c7cf22b93aa1b3f57c81affe4825179c200e5c7cd6ba4d930ebf6306f54fb0995b04af

memory/4776-7-0x0000000000CE0000-0x0000000000D3B000-memory.dmp

memory/876-8-0x0000000000400000-0x000000000045B000-memory.dmp

memory/876-10-0x0000000000A60000-0x0000000000ABB000-memory.dmp

memory/4776-9-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4776-13-0x0000000000400000-0x000000000045B000-memory.dmp