Malware Analysis Report

2025-03-14 23:31

Sample ID 240407-w38t7sbd23
Target 0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed
SHA256 0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed
Tags
persistence
score
8/10

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
8/10

SHA256

0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed

Threat Level: Likely malicious

The file 0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed 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

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 18:27

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 18:27

Reported

2024-04-07 18:30

Platform

win10v2004-20240319-en

Max time kernel

147s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\biclnte.dll C:\PROGRA~3\Mozilla\jhifwqk.exe N/A
File created C:\PROGRA~3\Mozilla\jhifwqk.exe C:\Users\Admin\AppData\Local\Temp\0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed.exe

"C:\Users\Admin\AppData\Local\Temp\0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed.exe"

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

C:\PROGRA~3\Mozilla\jhifwqk.exe -zmqutfb

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1312 --field-trial-handle=2260,i,4762972005863767630,9297428255150568035,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
NL 142.251.39.110:443 tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
NL 142.250.179.138:443 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
DE 142.250.184.202:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 241.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 202.184.250.142.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 225.162.46.104.in-addr.arpa udp

Files

memory/4960-0-0x0000000000400000-0x000000000042B000-memory.dmp

memory/4960-1-0x0000000002050000-0x00000000020AB000-memory.dmp

C:\ProgramData\Mozilla\jhifwqk.exe

MD5 92d1b0936413845e8dd7ed29a389b471
SHA1 323f98717bb17463d39a5e7ade49ef7570189773
SHA256 691d2be7838e171b1248a583412fe52528ab8672db2c4384de5dbb149c171a36
SHA512 26aaf2e28266d9f88c6c855cbd2eb3def964266f002237f5b94cc68916e83211095841266e6bea1e2ce80b3dbbeedcc5a30d6217eddcbb142f2850687d8e6799

memory/4796-9-0x0000000000400000-0x000000000042B000-memory.dmp

memory/4960-10-0x0000000000400000-0x000000000042B000-memory.dmp

memory/4796-11-0x0000000000D30000-0x0000000000D8B000-memory.dmp

memory/4796-17-0x0000000000400000-0x000000000042B000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 18:27

Reported

2024-04-07 18:30

Platform

win7-20240215-en

Max time kernel

121s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\PROGRA~3\Mozilla\racmzae.exe 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\0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed.exe N/A
File created C:\PROGRA~3\Mozilla\ttbtowf.dll C:\PROGRA~3\Mozilla\racmzae.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 380 wrote to memory of 2508 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\racmzae.exe
PID 380 wrote to memory of 2508 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\racmzae.exe
PID 380 wrote to memory of 2508 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\racmzae.exe
PID 380 wrote to memory of 2508 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\racmzae.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed.exe

"C:\Users\Admin\AppData\Local\Temp\0b46944df4c2103b5a1313fb66a5a839cf096ea88215af5f0a3254a5fdb1e4ed.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {665C9F1F-2ACE-4382-B252-18485482391B} 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/2484-0-0x0000000000400000-0x000000000042B000-memory.dmp

memory/2484-1-0x0000000000250000-0x00000000002AB000-memory.dmp

memory/2484-7-0x0000000000400000-0x000000000042B000-memory.dmp

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

MD5 3c1751e88400eacff46f29bc068208df
SHA1 2b2e8060ab370dbf1c642ed70a6b1ccf7c95b142
SHA256 91d150045c51360f6f624f1aa175dfe36c2d31f7efc2c11219845a037ccb8f11
SHA512 61f744cfea2575ec29bbcff46a38ad39a5174d1965a2b30d43b3f5fe35c795558a87dce6ff3723a4ed1ee82f6095e6de641e23dc5c07afe75d2faa25d0254ef6

memory/2508-10-0x0000000000400000-0x000000000042B000-memory.dmp

memory/2508-11-0x00000000002D0000-0x000000000032B000-memory.dmp

memory/2508-17-0x0000000000400000-0x000000000042B000-memory.dmp