Malware Analysis Report

2024-12-08 00:46

Sample ID 231226-r8t6sahdcj
Target 76fbd4b7dcf37623dc580a513ca592a9
SHA256 69ee237eb2002c30d7899225a26cd7e823cd8f90b630aa818aae00b88cf7e031
Tags
smokeloader pub3 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

69ee237eb2002c30d7899225a26cd7e823cd8f90b630aa818aae00b88cf7e031

Threat Level: Known bad

The file 76fbd4b7dcf37623dc580a513ca592a9 was found to be: Known bad.

Malicious Activity Summary

smokeloader pub3 backdoor trojan

SmokeLoader

Deletes itself

Loads dropped DLL

Unsigned PE

Checks SCSI registry key(s)

Suspicious behavior: EnumeratesProcesses

Uses Task Scheduler COM API

Suspicious use of UnmapMainImage

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-26 14:52

Signatures

Unsigned PE

Description Indicator Process Target
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Analysis: behavioral1

Detonation Overview

Submitted

2023-12-26 14:52

Reported

2023-12-28 02:18

Platform

win7-20231215-en

Max time kernel

151s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

Description Indicator Process Target
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Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe

"C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 ppcspb.com udp
US 8.8.8.8:53 mebbing.com udp
US 8.8.8.8:53 twcamel.com udp
US 8.8.8.8:53 howdycash.com udp
CA 23.227.38.32:80 howdycash.com tcp
US 8.8.8.8:53 lahuertasonora.com udp
US 38.238.189.178:80 lahuertasonora.com tcp
US 8.8.8.8:53 kpotiques.com udp
US 104.253.227.240:80 kpotiques.com tcp

Files

memory/848-1-0x0000000000AA0000-0x0000000000BA0000-memory.dmp

memory/848-2-0x0000000000230000-0x0000000000239000-memory.dmp

memory/848-3-0x0000000000400000-0x00000000008F5000-memory.dmp

\Users\Admin\AppData\Local\Temp\CC4F.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

memory/1360-7-0x00000000025A0000-0x00000000025B6000-memory.dmp

memory/848-8-0x0000000000400000-0x00000000008F5000-memory.dmp

memory/848-10-0x0000000000230000-0x0000000000239000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-26 14:52

Reported

2023-12-28 02:17

Platform

win10v2004-20231215-en

Max time kernel

152s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe N/A

Suspicious use of UnmapMainImage

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe

"C:\Users\Admin\AppData\Local\Temp\76fbd4b7dcf37623dc580a513ca592a9.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 189.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 13.107.21.200:443 g.bing.com tcp
US 8.8.8.8:53 200.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 ppcspb.com udp
US 8.8.8.8:53 mebbing.com udp
US 8.8.8.8:53 twcamel.com udp
US 8.8.8.8:53 howdycash.com udp
CA 23.227.38.32:80 howdycash.com tcp
US 8.8.8.8:53 lahuertasonora.com udp
US 38.238.189.178:80 lahuertasonora.com tcp
US 8.8.8.8:53 32.38.227.23.in-addr.arpa udp
US 8.8.8.8:53 178.189.238.38.in-addr.arpa udp
US 8.8.8.8:53 204.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.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 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 kpotiques.com udp
US 104.253.227.240:80 kpotiques.com tcp
US 8.8.8.8:53 240.227.253.104.in-addr.arpa udp
US 8.8.8.8:53 200.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 185.13.222.173.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 63.141.182.52.in-addr.arpa udp
US 8.8.8.8:53 206.178.17.96.in-addr.arpa udp
GB 96.17.178.195:80 tcp
GB 96.17.178.195:80 tcp
US 8.8.8.8:53 udp

Files

memory/4572-1-0x0000000000970000-0x0000000000A70000-memory.dmp

memory/4572-2-0x0000000000A80000-0x0000000000A89000-memory.dmp

memory/4572-3-0x0000000000400000-0x00000000008F5000-memory.dmp

memory/4572-4-0x0000000000400000-0x00000000008F5000-memory.dmp

memory/4572-5-0x0000000000970000-0x0000000000A70000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\CC4F.tmp

MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

memory/4572-10-0x0000000000400000-0x00000000008F5000-memory.dmp

memory/3400-11-0x00000000022C0000-0x00000000022D6000-memory.dmp

memory/4572-13-0x0000000000A80000-0x0000000000A89000-memory.dmp

memory/4572-12-0x0000000000400000-0x00000000008F5000-memory.dmp