Malware Analysis Report

2024-10-19 08:10

Sample ID 240622-l2ejvsxclr
Target crypted rat.exe
SHA256 286fd81b6bae4e132cbad308423e3b2b064ea4e8b4ea970c5c1fe31a156c5b1e
Tags
njrat debil trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

286fd81b6bae4e132cbad308423e3b2b064ea4e8b4ea970c5c1fe31a156c5b1e

Threat Level: Known bad

The file crypted rat.exe was found to be: Known bad.

Malicious Activity Summary

njrat debil trojan

njRAT/Bladabindi

Executes dropped EXE

Suspicious use of SetThreadContext

Drops file in Windows directory

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-22 10:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-22 10:01

Reported

2024-06-22 10:03

Platform

win10v2004-20240611-en

Max time kernel

125s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\crypted rat.exe"

Signatures

njRAT/Bladabindi

trojan njrat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\server.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 628 set thread context of 3708 N/A C:\Users\Admin\AppData\Local\Temp\crypted rat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\server.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\crypted rat.exe

"C:\Users\Admin\AppData\Local\Temp\crypted rat.exe"

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 --field-trial-handle=1284,i,1236064252342462940,13180713657498721890,262144 --variations-seed-version --mojo-platform-channel-handle=4076 /prefetch:8

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"

C:\Windows\server.exe

"C:\Windows\server.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/628-0-0x000000007480E000-0x000000007480F000-memory.dmp

memory/628-1-0x0000000000DD0000-0x0000000000DF2000-memory.dmp

memory/628-2-0x0000000005E90000-0x0000000006434000-memory.dmp

memory/628-3-0x0000000005800000-0x0000000005892000-memory.dmp

memory/628-4-0x00000000057F0000-0x00000000057FA000-memory.dmp

memory/628-5-0x0000000074800000-0x0000000074FB0000-memory.dmp

memory/628-6-0x0000000005B20000-0x0000000005B96000-memory.dmp

memory/628-7-0x000000007480E000-0x000000007480F000-memory.dmp

memory/628-8-0x0000000074800000-0x0000000074FB0000-memory.dmp

memory/628-9-0x00000000058A0000-0x00000000058C0000-memory.dmp

memory/628-10-0x0000000005AA0000-0x0000000005ABE000-memory.dmp

memory/3708-11-0x0000000000400000-0x000000000041C000-memory.dmp

memory/3708-14-0x0000000074800000-0x0000000074FB0000-memory.dmp

memory/3708-13-0x00000000053D0000-0x000000000546C000-memory.dmp

memory/628-15-0x0000000074800000-0x0000000074FB0000-memory.dmp

memory/3708-16-0x0000000074800000-0x0000000074FB0000-memory.dmp

C:\Windows\server.exe

MD5 9d352bc46709f0cb5ec974633a0c3c94
SHA1 1969771b2f022f9a86d77ac4d4d239becdf08d07
SHA256 2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390
SHA512 13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

memory/3708-29-0x0000000074800000-0x0000000074FB0000-memory.dmp

memory/2576-32-0x00000000747D0000-0x000000007487B000-memory.dmp

memory/2576-31-0x0000000000640000-0x000000000064E000-memory.dmp

memory/2576-33-0x0000000004E20000-0x0000000004E5C000-memory.dmp

memory/2576-34-0x0000000002960000-0x0000000002981000-memory.dmp

memory/2576-36-0x00000000747D0000-0x000000007487B000-memory.dmp