Malware Analysis Report

2025-01-02 11:13

Sample ID 240313-ba7ffshh85
Target b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75
SHA256 b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75
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

b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75

Threat Level: Known bad

The file b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75 was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Deletes itself

Executes dropped EXE

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of UnmapMainImage

Uses Task Scheduler COM API

Checks SCSI registry key(s)

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-13 00:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-13 00:57

Reported

2024-03-13 01:00

Platform

win7-20240221-en

Max time kernel

150s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.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\ajavadw N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ajavadw N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ajavadw N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\ajavadw N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1568 wrote to memory of 1368 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ajavadw
PID 1568 wrote to memory of 1368 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ajavadw
PID 1568 wrote to memory of 1368 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ajavadw
PID 1568 wrote to memory of 1368 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\ajavadw

Processes

C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe

"C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {94A2EA72-CD79-4578-91AF-B4855038FC23} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\ajavadw

C:\Users\Admin\AppData\Roaming\ajavadw

Network

Country Destination Domain Proto
US 8.8.8.8:53 nidoe.org udp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp

Files

memory/2240-1-0x0000000000270000-0x0000000000370000-memory.dmp

memory/2240-3-0x0000000000400000-0x0000000000474000-memory.dmp

memory/2240-2-0x00000000001C0000-0x00000000001CB000-memory.dmp

memory/2240-5-0x0000000000400000-0x0000000000474000-memory.dmp

memory/1148-4-0x0000000002570000-0x0000000002586000-memory.dmp

C:\Users\Admin\AppData\Roaming\ajavadw

MD5 f1152e63f771fd564639e78b6a5ce34d
SHA1 cea271578e5f812e64e4f677c0c8ce86e17db938
SHA256 b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75
SHA512 056c929a0721c91c7c2c9f87fae82e61fea61af185584c0c0e370b150caf4c849b1698b39184f26379dc0fecba557e67217b89373df3cb785431f32d6460162a

memory/1368-14-0x00000000002D0000-0x00000000003D0000-memory.dmp

memory/1368-15-0x0000000000400000-0x0000000000474000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-13 00:57

Reported

2024-03-13 01:00

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.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\aigtwtt 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\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\aigtwtt N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\aigtwtt N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\aigtwtt N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.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\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe

"C:\Users\Admin\AppData\Local\Temp\b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75.exe"

C:\Users\Admin\AppData\Roaming\aigtwtt

C:\Users\Admin\AppData\Roaming\aigtwtt

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 nidoe.org udp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
US 8.8.8.8:53 82.22.211.187.in-addr.arpa udp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
MX 187.211.22.82:80 nidoe.org tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
MX 187.211.22.82:80 nidoe.org tcp
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 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
MX 187.211.22.82:80 nidoe.org tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 24.73.42.20.in-addr.arpa udp

Files

memory/1060-1-0x0000000000720000-0x0000000000820000-memory.dmp

memory/1060-2-0x00000000005D0000-0x00000000005DB000-memory.dmp

memory/1060-3-0x0000000000400000-0x0000000000474000-memory.dmp

memory/3472-4-0x0000000000980000-0x0000000000996000-memory.dmp

memory/1060-5-0x0000000000400000-0x0000000000474000-memory.dmp

C:\Users\Admin\AppData\Roaming\aigtwtt

MD5 f1152e63f771fd564639e78b6a5ce34d
SHA1 cea271578e5f812e64e4f677c0c8ce86e17db938
SHA256 b2d15b3985cd90d2e5273288589f97ac0ed7d46a43d2d85854e9807270280f75
SHA512 056c929a0721c91c7c2c9f87fae82e61fea61af185584c0c0e370b150caf4c849b1698b39184f26379dc0fecba557e67217b89373df3cb785431f32d6460162a

memory/4668-14-0x0000000000790000-0x0000000000890000-memory.dmp

memory/4668-15-0x0000000000400000-0x0000000000474000-memory.dmp