Malware Analysis Report

2025-01-02 04:53

Sample ID 240422-vebzwsdf32
Target fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934
SHA256 fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934
Tags
smokeloader 1106 backdoor trojan
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

fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934

Threat Level: Known bad

The file fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934 was found to be: Known bad.

Malicious Activity Summary

smokeloader 1106 backdoor trojan

SmokeLoader

Loads dropped DLL

Suspicious use of SetThreadContext

Unsigned PE

Checks SCSI registry key(s)

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-22 16:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-22 16:53

Reported

2024-04-22 16:56

Platform

win7-20231129-en

Max time kernel

140s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2024 wrote to memory of 2656 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 2024 wrote to memory of 2656 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 2024 wrote to memory of 2656 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 2024 wrote to memory of 2656 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 2024 wrote to memory of 2656 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 2024 wrote to memory of 2656 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 2024 wrote to memory of 2656 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe

Processes

C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe

"C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"

C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe

"C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe"

Network

N/A

Files

memory/2656-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2024-1-0x0000000000500000-0x0000000000600000-memory.dmp

memory/2656-4-0x0000000000400000-0x000000000040C000-memory.dmp

memory/2656-5-0x0000000000400000-0x000000000040C000-memory.dmp

memory/2656-7-0x0000000000400000-0x000000000040C000-memory.dmp

\Users\Admin\AppData\Local\Temp\4DD3.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

memory/1204-10-0x0000000002D70000-0x0000000002D71000-memory.dmp

memory/1204-11-0x0000000002D50000-0x0000000002D67000-memory.dmp

memory/2656-12-0x0000000000400000-0x000000000040C000-memory.dmp

memory/1204-14-0x0000000002D70000-0x0000000002D71000-memory.dmp

memory/1204-15-0x0000000002D50000-0x0000000002D67000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-22 16:53

Reported

2024-04-22 16:56

Platform

win10v2004-20240412-en

Max time kernel

139s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4340 wrote to memory of 3412 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 4340 wrote to memory of 3412 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 4340 wrote to memory of 3412 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 4340 wrote to memory of 3412 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 4340 wrote to memory of 3412 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
PID 4340 wrote to memory of 3412 N/A C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe

Processes

C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe

"C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"

C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe

"C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 130.2.16.2.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 206.221.208.4.in-addr.arpa udp
CZ 23.212.110.203:443 www.bing.com tcp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 203.110.212.23.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 196.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.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 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

memory/4340-1-0x0000000000520000-0x0000000000620000-memory.dmp

memory/3412-3-0x0000000000400000-0x000000000040C000-memory.dmp

memory/3412-4-0x0000000000400000-0x000000000040C000-memory.dmp

memory/3412-2-0x0000000000400000-0x000000000040C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\4DD3.tmp

MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

memory/3412-8-0x0000000000400000-0x000000000040C000-memory.dmp