Malware Analysis Report

2025-03-14 22:51

Sample ID 240406-1jrh2abg41
Target 62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b
SHA256 62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b
Tags
persistence
score
8/10

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
8/10

SHA256

62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b

Threat Level: Likely malicious

The file 62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b 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

2024-04-06 21:41

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 21:41

Reported

2024-04-06 21:43

Platform

win7-20231129-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b.exe"

Signatures

Modifies AppInit DLL entries

persistence

Executes dropped EXE

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~3\Mozilla\anhxrcb.exe C:\Users\Admin\AppData\Local\Temp\62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b.exe N/A
File created C:\PROGRA~3\Mozilla\fqurfhn.dll C:\PROGRA~3\Mozilla\anhxrcb.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2964 wrote to memory of 1720 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\anhxrcb.exe
PID 2964 wrote to memory of 1720 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\anhxrcb.exe
PID 2964 wrote to memory of 1720 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\anhxrcb.exe
PID 2964 wrote to memory of 1720 N/A C:\Windows\system32\taskeng.exe C:\PROGRA~3\Mozilla\anhxrcb.exe

Processes

C:\Users\Admin\AppData\Local\Temp\62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b.exe

"C:\Users\Admin\AppData\Local\Temp\62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {4281E4C9-7EF1-4B0E-87D3-2C0B862C6500} S-1-5-18:NT AUTHORITY\System:Service:

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

C:\PROGRA~3\Mozilla\anhxrcb.exe -wxojhrj

Network

N/A

Files

memory/2896-1-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2896-2-0x0000000000260000-0x0000000000261000-memory.dmp

memory/2896-3-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2896-7-0x0000000000400000-0x0000000000462000-memory.dmp

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

MD5 a76dd50f4e4ed24a41f9fa7f10cb3aec
SHA1 319de7727ef46577e8593a9dc8c85a910e2c90f6
SHA256 4cadd9b8617130285f0f83377192df703ffff77399305b4dc984529d870224c1
SHA512 19aa791a0335b50e23d606c2d0047f97e4980cd771175168b649bc26bc3a3e57e80196fcc04f53d1207d51a0b098e173475e0c9217bb6a30cc6a531b8ee1858e

memory/1720-14-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1720-16-0x0000000000400000-0x0000000000462000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 21:41

Reported

2024-04-06 21:43

Platform

win10v2004-20240319-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b.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\jhifwqk.exe C:\Users\Admin\AppData\Local\Temp\62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b.exe N/A
File created C:\PROGRA~3\Mozilla\biclnte.dll C:\PROGRA~3\Mozilla\jhifwqk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b.exe

"C:\Users\Admin\AppData\Local\Temp\62c32bec7f7820a7911def9d75bca77e9e090eef688df3c74ef34cbc3d06ae5b.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=1780 --field-trial-handle=2000,i,9877262470271371196,11878025205711850266,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
IE 94.245.104.56:443 tcp
GB 51.11.108.188:443 tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 99.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.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 13.179.89.13.in-addr.arpa udp

Files

memory/416-0-0x0000000000400000-0x0000000000462000-memory.dmp

memory/416-1-0x0000000000400000-0x0000000000462000-memory.dmp

memory/416-2-0x0000000000590000-0x0000000000591000-memory.dmp

memory/416-3-0x0000000000400000-0x0000000000462000-memory.dmp

C:\ProgramData\Mozilla\jhifwqk.exe

MD5 41d32fd89c90ad6dfcc9c520d484abcf
SHA1 5d1ff6fea85ef4895541c064d1366cb0a8ce6cf0
SHA256 895bb814dd7caa7431516181cb32c4a540f391a3bc127f96148f324786dc9f39
SHA512 21b96ac250f8c2886abae8986edce2578059170c23c23c98fce1b611054aad6a295a56978faa93f75ef9ae57b8c174818419ae1264f15a47c9dabdf118e7d7b8

memory/416-8-0x0000000000400000-0x0000000000462000-memory.dmp

memory/4168-10-0x0000000000400000-0x0000000000462000-memory.dmp

memory/4168-11-0x0000000000400000-0x0000000000462000-memory.dmp

memory/4168-15-0x0000000000400000-0x0000000000462000-memory.dmp