Malware Analysis Report

2025-01-02 11:07

Sample ID 240314-mwhj1aaa7x
Target c86fd1ebf5f3a426a15c9f95fcd84faa
SHA256 bb77a6db1dcb68fe192c07ff0c0950c304771ff652ff7378a18631b8430b1468
Tags
smokeloader pub1 backdoor trojan
score
10/10

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
10/10

SHA256

bb77a6db1dcb68fe192c07ff0c0950c304771ff652ff7378a18631b8430b1468

Threat Level: Known bad

The file c86fd1ebf5f3a426a15c9f95fcd84faa was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Executes dropped EXE

Deletes itself

Loads dropped DLL

Program crash

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious behavior: MapViewOfSection

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Checks SCSI registry key(s)

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-14 10:48

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-14 10:48

Reported

2024-03-14 10:51

Platform

win10v2004-20240226-en

Max time kernel

153s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

Description Indicator Process Target
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Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\gcaratc N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\gcaratc 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\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\gcaratc N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\gcaratc N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\gcaratc N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\gcaratc 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\c86fd1ebf5f3a426a15c9f95fcd84faa.exe

"C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.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 --no-appcompat-clear --mojo-platform-channel-handle=3496 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8

C:\Users\Admin\AppData\Roaming\gcaratc

C:\Users\Admin\AppData\Roaming\gcaratc

Network

Country Destination Domain Proto
US 8.8.8.8:53 16.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 conceitosseg.com udp
US 8.8.8.8:53 integrasidata.com udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
SG 172.104.187.4:80 integrasidata.com tcp
US 8.8.8.8:53 ozentekstil.com udp
TR 94.73.151.78:80 ozentekstil.com tcp
TR 94.73.151.78:80 ozentekstil.com tcp
TR 94.73.151.78:443 ozentekstil.com tcp
US 8.8.8.8:53 4.187.104.172.in-addr.arpa udp
US 8.8.8.8:53 78.151.73.94.in-addr.arpa udp
US 8.8.8.8:53 finbelportal.com udp
US 8.8.8.8:53 telanganadigital.com udp
US 192.64.119.13:80 telanganadigital.com tcp
US 8.8.8.8:53 www.telanganadigital.com udp
DE 91.195.240.19:80 www.telanganadigital.com tcp
US 8.8.8.8:53 13.119.64.192.in-addr.arpa udp
US 8.8.8.8:53 19.240.195.91.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.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 6.173.189.20.in-addr.arpa udp

Files

memory/2616-1-0x0000000002DC0000-0x0000000002EC0000-memory.dmp

memory/2616-2-0x0000000002DA0000-0x0000000002DA9000-memory.dmp

memory/2616-3-0x0000000000400000-0x0000000002C75000-memory.dmp

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

MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

memory/2616-8-0x0000000000400000-0x0000000002C75000-memory.dmp

memory/3164-9-0x00000000028E0000-0x00000000028F5000-memory.dmp

memory/2616-12-0x0000000000400000-0x0000000002C75000-memory.dmp

memory/2616-13-0x0000000002DA0000-0x0000000002DA9000-memory.dmp

C:\Users\Admin\AppData\Roaming\gcaratc

MD5 c86fd1ebf5f3a426a15c9f95fcd84faa
SHA1 aca444cf867e54adbca544d1f4ff27546ccaa004
SHA256 bb77a6db1dcb68fe192c07ff0c0950c304771ff652ff7378a18631b8430b1468
SHA512 ca4a90601f3b64e85f844f4384a706e96b1f30607fd8bd83126de439249dfe20659563e1332af6c134748853421dc5338ce33d89c753ec83058ae1e23b32e426

memory/1368-22-0x0000000002E80000-0x0000000002F80000-memory.dmp

memory/1368-24-0x0000000000400000-0x0000000002C75000-memory.dmp

memory/3164-27-0x0000000000820000-0x0000000000835000-memory.dmp

memory/1368-30-0x0000000000400000-0x0000000002C75000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-14 10:48

Reported

2024-03-14 10:51

Platform

win7-20240221-en

Max time kernel

151s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\bbfgwgt N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Roaming\bbfgwgt

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A N/A N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A N/A N/A
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Suspicious use of SendNotifyMessage

Description Indicator Process Target
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Processes

C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe

"C:\Users\Admin\AppData\Local\Temp\c86fd1ebf5f3a426a15c9f95fcd84faa.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {4E4CE5DB-DBB3-41AC-AE18-7C82E06A2195} S-1-5-21-2461186416-2307104501-1787948496-1000:MGILJUBR\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\bbfgwgt

C:\Users\Admin\AppData\Roaming\bbfgwgt

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1944 -s 124

Network

Country Destination Domain Proto
US 8.8.8.8:53 conceitosseg.com udp
US 8.8.8.8:53 integrasidata.com udp
SG 172.104.187.4:80 integrasidata.com tcp
US 8.8.8.8:53 ozentekstil.com udp
TR 94.73.151.78:80 ozentekstil.com tcp
TR 94.73.151.78:80 ozentekstil.com tcp
TR 94.73.151.78:443 ozentekstil.com tcp
TR 94.73.151.78:443 ozentekstil.com tcp
US 8.8.8.8:53 finbelportal.com udp
US 8.8.8.8:53 telanganadigital.com udp
US 192.64.119.13:80 telanganadigital.com tcp
US 8.8.8.8:53 www.telanganadigital.com udp
DE 91.195.240.19:80 www.telanganadigital.com tcp

Files

memory/1680-1-0x0000000002DB0000-0x0000000002EB0000-memory.dmp

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

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

memory/1680-5-0x0000000000400000-0x0000000002C75000-memory.dmp

memory/1680-6-0x0000000000220000-0x0000000000229000-memory.dmp

memory/1376-7-0x0000000002750000-0x0000000002765000-memory.dmp

memory/1680-8-0x0000000000400000-0x0000000002C75000-memory.dmp

C:\Users\Admin\AppData\Roaming\bbfgwgt

MD5 c86fd1ebf5f3a426a15c9f95fcd84faa
SHA1 aca444cf867e54adbca544d1f4ff27546ccaa004
SHA256 bb77a6db1dcb68fe192c07ff0c0950c304771ff652ff7378a18631b8430b1468
SHA512 ca4a90601f3b64e85f844f4384a706e96b1f30607fd8bd83126de439249dfe20659563e1332af6c134748853421dc5338ce33d89c753ec83058ae1e23b32e426

memory/1944-18-0x0000000002DE0000-0x0000000002EE0000-memory.dmp

memory/1944-20-0x0000000000400000-0x0000000002C75000-memory.dmp

memory/1944-27-0x0000000002DE0000-0x0000000002EE0000-memory.dmp