Malware Analysis Report

2025-01-02 11:07

Sample ID 240314-cq4vyaad89
Target 6252a112e0b7ec864abc4005b38d1077.bin
SHA256 1bb992ed6e0b7861afa33bca11cdb13b50dbcedcfd1c9fbb3551fbe805d795db
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: 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

1bb992ed6e0b7861afa33bca11cdb13b50dbcedcfd1c9fbb3551fbe805d795db

Threat Level: Known bad

The file 6252a112e0b7ec864abc4005b38d1077.bin was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Deletes itself

Executes dropped EXE

Unsigned PE

Suspicious use of UnmapMainImage

Uses Task Scheduler COM API

Checks SCSI registry key(s)

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-14 02:17

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-14 02:17

Reported

2024-03-14 02:20

Platform

win7-20240221-en

Max time kernel

150s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.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\sabgvth 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\6252a112e0b7ec864abc4005b38d1077.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sabgvth N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sabgvth N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sabgvth N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\sabgvth N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2660 wrote to memory of 2764 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\sabgvth
PID 2660 wrote to memory of 2764 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\sabgvth
PID 2660 wrote to memory of 2764 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\sabgvth
PID 2660 wrote to memory of 2764 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\sabgvth

Processes

C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe

"C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {7C2471DD-CF0A-401E-BB8B-B7AB3C7A4E35} S-1-5-21-1298544033-3225604241-2703760938-1000:IZKCKOTP\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\sabgvth

C:\Users\Admin\AppData\Roaming\sabgvth

Network

Country Destination Domain Proto
US 8.8.8.8:53 nidoe.org udp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp

Files

memory/1460-1-0x0000000000560000-0x0000000000660000-memory.dmp

memory/1460-2-0x0000000000220000-0x000000000022B000-memory.dmp

memory/1460-3-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1460-5-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1212-4-0x0000000003170000-0x0000000003186000-memory.dmp

C:\Users\Admin\AppData\Roaming\sabgvth

MD5 6252a112e0b7ec864abc4005b38d1077
SHA1 24374bebe039057efc1cd4d3a325580757530d2a
SHA256 1bb992ed6e0b7861afa33bca11cdb13b50dbcedcfd1c9fbb3551fbe805d795db
SHA512 e66c5f0a905abdebfed899b4ee9461bba10a54b940ca3218d31b89edc5bb6b990ab86873ec5dbf47d1e594cfb9a817ec733a6561e60e2a2c6491ac57b19ea4a9

C:\Users\Admin\AppData\Roaming\sabgvth

MD5 197f4e10c89b2a97633051eb7018257b
SHA1 a712f3d9ec428b152d566e941b492d332bb37e71
SHA256 e76b0ea1fe7563f195284a0388d03b313085b83a599512531a236597cf736e27
SHA512 eed6294a775239fe3d5f5b1f7edffd76d2dd3e96d3d935c8d758573ab455d3f198d767acb9a81eba739bce51f12df961e1c7c1c3803a96d3b0a53115119bf98d

memory/2764-14-0x00000000005E0000-0x00000000006E0000-memory.dmp

memory/2764-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2764-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1212-16-0x0000000002E30000-0x0000000002E46000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-14 02:17

Reported

2024-03-14 02:20

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.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\sacrewu 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\6252a112e0b7ec864abc4005b38d1077.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sacrewu N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sacrewu N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sacrewu N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\sacrewu 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\6252a112e0b7ec864abc4005b38d1077.exe

"C:\Users\Admin\AppData\Local\Temp\6252a112e0b7ec864abc4005b38d1077.exe"

C:\Users\Admin\AppData\Roaming\sacrewu

C:\Users\Admin\AppData\Roaming\sacrewu

Network

Country Destination Domain Proto
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 nidoe.org udp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
US 8.8.8.8:53 243.161.140.123.in-addr.arpa udp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 178.178.17.96.in-addr.arpa udp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
US 8.8.8.8:53 196.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 211.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.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 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
KR 123.140.161.243:80 nidoe.org tcp
KR 123.140.161.243:80 nidoe.org tcp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 8.173.189.20.in-addr.arpa udp

Files

memory/1824-2-0x00000000004C0000-0x00000000004CB000-memory.dmp

memory/1824-3-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1824-1-0x0000000000510000-0x0000000000610000-memory.dmp

memory/1824-5-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3464-4-0x0000000002690000-0x00000000026A6000-memory.dmp

C:\Users\Admin\AppData\Roaming\sacrewu

MD5 6252a112e0b7ec864abc4005b38d1077
SHA1 24374bebe039057efc1cd4d3a325580757530d2a
SHA256 1bb992ed6e0b7861afa33bca11cdb13b50dbcedcfd1c9fbb3551fbe805d795db
SHA512 e66c5f0a905abdebfed899b4ee9461bba10a54b940ca3218d31b89edc5bb6b990ab86873ec5dbf47d1e594cfb9a817ec733a6561e60e2a2c6491ac57b19ea4a9

memory/3500-14-0x00000000006D0000-0x00000000007D0000-memory.dmp

memory/3500-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3464-16-0x0000000002800000-0x0000000002816000-memory.dmp

memory/3500-19-0x0000000000400000-0x0000000000438000-memory.dmp