Malware Analysis Report

2025-03-14 22:29

Sample ID 240407-xxgdfacc98
Target 1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953
SHA256 1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953
Tags
persistence upx
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

1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953

Threat Level: Known bad

The file 1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953 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

2024-04-07 19:13

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 19:13

Reported

2024-04-07 19:16

Platform

win7-20240319-en

Max time kernel

119s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.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\cwtsudd.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\cwtsudd.exe C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.exe N/A
File created C:\PROGRA~3\Mozilla\njrippn.dll C:\PROGRA~3\Mozilla\cwtsudd.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.exe N/A
N/A N/A C:\PROGRA~3\Mozilla\cwtsudd.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1984 wrote to memory of 1696 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\cwtsudd.exe
PID 1984 wrote to memory of 1696 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\cwtsudd.exe
PID 1984 wrote to memory of 1696 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\cwtsudd.exe
PID 1984 wrote to memory of 1696 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\cwtsudd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.exe

"C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {6F227F7D-68D6-4057-91B2-5953B1271FEC} S-1-5-18:NT AUTHORITY\System:Service:

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

C:\PROGRA~3\Mozilla\cwtsudd.exe -ldxtpdk

Network

N/A

Files

memory/2252-0-0x0000000000400000-0x000000000045F000-memory.dmp

memory/2252-1-0x00000000002E0000-0x000000000033B000-memory.dmp

memory/2252-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2252-4-0x0000000000400000-0x000000000045B000-memory.dmp

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

MD5 e5a73f768bd118cb2bb5e907f103628b
SHA1 c5d3dcc9a04e81f99c63d3237c5688a60c44b220
SHA256 0cb9970dbd99863f56d5bff0d1bfa4f457cc639a0628af0b2eebbc4db93f2cb4
SHA512 2ba5bb80bc64883fa54298dcfcf966285cb60d4e3e12ec3be89d7316c1a2cb2e0831261b2885ad5a44f64870b38e39dffe422a98f18765587764ae661f02c1da

memory/1696-8-0x0000000000400000-0x000000000045B000-memory.dmp

memory/1696-7-0x0000000000590000-0x00000000005EB000-memory.dmp

memory/1696-11-0x0000000000590000-0x00000000005EB000-memory.dmp

memory/1696-10-0x0000000000400000-0x000000000045B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 19:13

Reported

2024-04-07 19:16

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.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\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.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\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.exe

"C:\Users\Admin\AppData\Local\Temp\1f5860a98e6ea075b488b9297380df739f0023554b66c674f1c00bf8f9d09953.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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 121.118.77.104.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 253.15.104.51.in-addr.arpa udp

Files

memory/3808-0-0x0000000000400000-0x000000000045F000-memory.dmp

memory/3808-1-0x0000000000A40000-0x0000000000A9B000-memory.dmp

memory/3808-2-0x0000000000400000-0x000000000045B000-memory.dmp

memory/3808-4-0x0000000000400000-0x000000000045B000-memory.dmp

C:\ProgramData\Mozilla\fwjctpb.exe

MD5 a6c3e6d094c4ed90be5fad358c687e37
SHA1 9e44aa2a369a9921cc9baba2dc6b7dff33b1ca27
SHA256 3482b9609b0ef37d65bf09132d10aec13d17af47567ebde3313c90cf432f4c57
SHA512 3a544522ac71786676524d973a7b0eb364bea07ad100438f583e72ef4ba531d3531790a55155372224d817ad70892ed13da55d9ac2ff9bc95a60b30ca7e56d2d

memory/4848-8-0x0000000000DB0000-0x0000000000E0B000-memory.dmp

memory/4848-9-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4848-11-0x0000000000400000-0x000000000045B000-memory.dmp

memory/4848-13-0x0000000000DB0000-0x0000000000E0B000-memory.dmp