Malware Analysis Report

2025-03-14 23:34

Sample ID 240407-w82cbabb4y
Target 0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd
SHA256 0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd
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

0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd

Threat Level: Known bad

The file 0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd 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

UPX packed file

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 18:36

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

2024-04-07 18:36

Reported

2024-04-07 18:38

Platform

win7-20240215-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd.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\racmzae.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\racmzae.exe C:\Users\Admin\AppData\Local\Temp\0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd.exe N/A
File created C:\PROGRA~3\Mozilla\ttbtowf.dll C:\PROGRA~3\Mozilla\racmzae.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\racmzae.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2968 wrote to memory of 2548 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\racmzae.exe
PID 2968 wrote to memory of 2548 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\racmzae.exe
PID 2968 wrote to memory of 2548 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\racmzae.exe
PID 2968 wrote to memory of 2548 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\racmzae.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd.exe

"C:\Users\Admin\AppData\Local\Temp\0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {F1600066-3CA8-44E8-8BD2-C4826F3D9BD4} S-1-5-18:NT AUTHORITY\System:Service:

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

C:\PROGRA~3\Mozilla\racmzae.exe -cddhnyc

Network

N/A

Files

memory/2316-0-0x0000000000400000-0x0000000000460000-memory.dmp

memory/2316-1-0x00000000005F0000-0x000000000064B000-memory.dmp

memory/2316-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2316-4-0x0000000000400000-0x000000000045B000-memory.dmp

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

MD5 ddc20f973b240f911d7d145545fe5fe0
SHA1 753a1b535869e9c14f7c774bed451e03614cec3c
SHA256 6488800ed3268ddf1ad4d959c71faa76bee4c4397dc4f36c54bf0fbcee08235b
SHA512 08b1279f253381cb88dc8eaa1d50c0bcaf5bdf1f89d8b9239d9fc4514c7846c9e9e5cd44b1b181f3198d4485de0546e4faa02112df69371be1f800a2f367a444

memory/2548-7-0x0000000000400000-0x0000000000460000-memory.dmp

memory/2548-8-0x0000000000460000-0x00000000004BB000-memory.dmp

memory/2548-9-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2548-11-0x0000000000400000-0x000000000045B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 18:36

Reported

2024-04-07 18:38

Platform

win10v2004-20231215-en

Max time kernel

92s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd.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\frviiqj.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\frviiqj.exe C:\Users\Admin\AppData\Local\Temp\0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd.exe N/A
File created C:\PROGRA~3\Mozilla\sjqrgse.dll C:\PROGRA~3\Mozilla\frviiqj.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd.exe

"C:\Users\Admin\AppData\Local\Temp\0e315b51d15124a375a19a4631be8f01f2c1b314c427925d089b54c876a9bfdd.exe"

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

C:\PROGRA~3\Mozilla\frviiqj.exe -myayasb

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 17.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp

Files

memory/2808-0-0x0000000000400000-0x0000000000460000-memory.dmp

memory/2808-1-0x00000000020A0000-0x00000000020FB000-memory.dmp

memory/2808-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2808-8-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2260-6-0x0000000000400000-0x0000000000460000-memory.dmp

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

MD5 7f0ba54cda07efea43868267bd4aa83c
SHA1 70f44e063766e87fd0608399bdc9a1427abc23cc
SHA256 a52fd99c98e17fbecb59e145c34acafa25eaf2fc3390b6943002e6ebd80fb4f4
SHA512 7b265972dccf281e3a24c7509f2080c0399034922958fa891139eb5a5a4da5fa68f032ac84cc6c4bfdf0e991233d218c7d4f5dd6f87381d72dd9305a230527a9

memory/2260-11-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2260-10-0x0000000000D90000-0x0000000000DEB000-memory.dmp

memory/2808-9-0x00000000020A0000-0x00000000020FB000-memory.dmp

memory/2260-14-0x0000000000400000-0x000000000045B000-memory.dmp