Malware Analysis Report

2025-01-02 11:15

Sample ID 240311-2dcncsgb8s
Target c1c301d9b0ba8ba056707f2d2c82bd9d
SHA256 23d94c5414f81f6736b4ddc3cdc26097fb66d839d00079aa1c87c40a7e726cf9
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

23d94c5414f81f6736b4ddc3cdc26097fb66d839d00079aa1c87c40a7e726cf9

Threat Level: Known bad

The file c1c301d9b0ba8ba056707f2d2c82bd9d was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Deletes itself

Executes dropped EXE

Unsigned PE

Suspicious use of WriteProcessMemory

Checks SCSI registry key(s)

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of UnmapMainImage

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-11 22:27

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-11 22:27

Reported

2024-03-11 22:30

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.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\ibugres N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ibugres N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ibugres N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ibugres N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\ibugres 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\c1c301d9b0ba8ba056707f2d2c82bd9d.exe

"C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.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=4172 --field-trial-handle=2304,i,7548677271533893574,11048237606705436109,262144 --variations-seed-version /prefetch:8

C:\Users\Admin\AppData\Roaming\ibugres

C:\Users\Admin\AppData\Roaming\ibugres

Network

Country Destination Domain Proto
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 aucmoney.com udp
US 8.8.8.8:53 thegymmum.com udp
US 8.8.8.8:53 atvcampingtrips.com udp
US 8.8.8.8:53 kuapakualaman.com udp
US 8.8.8.8:53 renatazarazua.com udp
US 8.8.8.8:53 nasufmutlu.com udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 195.177.78.104.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 178.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 137.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 211.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 50.134.221.88.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

Files

memory/4020-1-0x00000000024A0000-0x00000000025A0000-memory.dmp

memory/4020-2-0x00000000001C0000-0x00000000001C9000-memory.dmp

memory/4020-3-0x0000000000400000-0x00000000023B1000-memory.dmp

memory/3316-4-0x0000000002D40000-0x0000000002D56000-memory.dmp

memory/4020-5-0x0000000000400000-0x00000000023B1000-memory.dmp

C:\Users\Admin\AppData\Roaming\ibugres

MD5 c1c301d9b0ba8ba056707f2d2c82bd9d
SHA1 d70353b58f0576138abdf8dcac5064358a379305
SHA256 23d94c5414f81f6736b4ddc3cdc26097fb66d839d00079aa1c87c40a7e726cf9
SHA512 1894b720c731c3f4dc90e42d98690bad2acaf6669fe7334064187bc4c21c662894447e635d76a9d06542e13529d56c1b0902585b47537ff04ece1669bb73b8f0

memory/2816-14-0x0000000002760000-0x0000000002860000-memory.dmp

memory/2816-15-0x0000000000400000-0x00000000023B1000-memory.dmp

memory/3316-16-0x0000000003190000-0x00000000031A6000-memory.dmp

memory/2816-19-0x0000000000400000-0x00000000023B1000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-11 22:27

Reported

2024-03-11 22:30

Platform

win7-20240221-en

Max time kernel

150s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.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\ujcjsua 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\c1c301d9b0ba8ba056707f2d2c82bd9d.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ujcjsua N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ujcjsua N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ujcjsua N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\ujcjsua N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1324 wrote to memory of 2032 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ujcjsua
PID 1324 wrote to memory of 2032 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ujcjsua
PID 1324 wrote to memory of 2032 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ujcjsua
PID 1324 wrote to memory of 2032 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ujcjsua

Processes

C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe

"C:\Users\Admin\AppData\Local\Temp\c1c301d9b0ba8ba056707f2d2c82bd9d.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {1BF37815-7940-4A8A-938E-02EDEBA869C6} S-1-5-21-330940541-141609230-1670313778-1000:KXIPPCKF\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\ujcjsua

C:\Users\Admin\AppData\Roaming\ujcjsua

Network

Country Destination Domain Proto
US 8.8.8.8:53 aucmoney.com udp
US 8.8.8.8:53 thegymmum.com udp
US 8.8.8.8:53 atvcampingtrips.com udp
US 8.8.8.8:53 kuapakualaman.com udp
US 8.8.8.8:53 renatazarazua.com udp
US 8.8.8.8:53 nasufmutlu.com udp

Files

memory/1736-1-0x0000000002580000-0x0000000002680000-memory.dmp

memory/1736-2-0x0000000000020000-0x0000000000029000-memory.dmp

memory/1736-3-0x0000000000400000-0x00000000023B1000-memory.dmp

memory/1176-4-0x0000000002200000-0x0000000002216000-memory.dmp

memory/1736-5-0x0000000000400000-0x00000000023B1000-memory.dmp

C:\Users\Admin\AppData\Roaming\ujcjsua

MD5 c1c301d9b0ba8ba056707f2d2c82bd9d
SHA1 d70353b58f0576138abdf8dcac5064358a379305
SHA256 23d94c5414f81f6736b4ddc3cdc26097fb66d839d00079aa1c87c40a7e726cf9
SHA512 1894b720c731c3f4dc90e42d98690bad2acaf6669fe7334064187bc4c21c662894447e635d76a9d06542e13529d56c1b0902585b47537ff04ece1669bb73b8f0

memory/2032-14-0x0000000002580000-0x0000000002680000-memory.dmp

memory/2032-15-0x0000000000400000-0x00000000023B1000-memory.dmp

memory/1176-16-0x0000000002AB0000-0x0000000002AC6000-memory.dmp

memory/2032-17-0x0000000000400000-0x00000000023B1000-memory.dmp